From ab082692769e2ebee3c34cccf66443d8060fd9cc Mon Sep 17 00:00:00 2001
From: dcodeIO <dcode@dcode.io>
Date: Wed, 25 Apr 2018 22:39:51 +0200
Subject: [PATCH] Clarify the use of RGBA vs ABGR in the game-of-life example

---
 examples/game-of-life/assembly/index.ts    |  18 +-
 examples/game-of-life/build/optimized.wasm | Bin 920 -> 904 bytes
 examples/game-of-life/build/optimized.wat  | 491 +++++++--------
 examples/game-of-life/build/untouched.wat  | 661 ++++++++-------------
 examples/game-of-life/index.html           |   7 +-
 5 files changed, 492 insertions(+), 685 deletions(-)

diff --git a/examples/game-of-life/assembly/index.ts b/examples/game-of-life/assembly/index.ts
index 3b1dee1e..66d96e76 100644
--- a/examples/game-of-life/assembly/index.ts
+++ b/examples/game-of-life/assembly/index.ts
@@ -1,8 +1,10 @@
 // see: https://en.wikipedia.org/wiki/Conway%27s_Game_of_Life
 
-// Configuration imported from JS.
-declare const RGB_ALIVE: u32;
-declare const RGB_DEAD: u32;
+// Configuration imported from JS. On the WASM side, colors are handled in ABGR order (alpha, blue,
+// green, red) because WASM is little endian. Doing so makes it possible to just copy the entire
+// ABGR memory in little endian byte order to the RGBA image buffer in big endian byte order.
+declare const BGR_ALIVE: u32;
+declare const BGR_DEAD: u32;
 declare const BIT_ROT: u32;
 
 var w: i32, h: i32, s: i32;
@@ -35,7 +37,7 @@ export function init(width: i32, height: i32): void {
   // Start by filling output with random live cells.
   for (let y = 0; y < h; ++y) {
     for (let x = 0; x < w; ++x) {
-      set(x, y, Math.random() > 0.1 ? RGB_DEAD & 0x00ffffff : RGB_ALIVE | 0xff000000);
+      set(x, y, Math.random() > 0.1 ? BGR_DEAD & 0x00ffffff : BGR_ALIVE | 0xff000000);
     }
   }
 }
@@ -67,10 +69,10 @@ export function step(): void {
         // A live cell with 2 or 3 live neighbors rots on to the next generation.
         if ((aliveNeighbors & 0b1110) == 0b0010) rot(x, y, self);
         // A live cell with fewer than 2 or more than 3 live neighbors dies.
-        else set(x, y, RGB_DEAD | 0xff000000);
+        else set(x, y, BGR_DEAD | 0xff000000);
       } else {
         // A dead cell with exactly 3 live neighbors becomes a live cell.
-        if (aliveNeighbors == 3) set(x, y, RGB_ALIVE | 0xff000000);
+        if (aliveNeighbors == 3) set(x, y, BGR_ALIVE | 0xff000000);
         // A dead cell with fewer or more than 3 live neighbors just rots.
         else rot(x, y, self);
       }
@@ -81,9 +83,9 @@ export function step(): void {
 /** Fills the row and column indicated by `x` and `y` with random live cells. */
 export function fill(x: u32, y: u32, p: f64): void {
   for (let ix = 0; ix < w; ++ix) {
-    if (Math.random() < p) set(ix, y, RGB_ALIVE | 0xff000000);
+    if (Math.random() < p) set(ix, y, BGR_ALIVE | 0xff000000);
   }
   for (let iy = 0; iy < h; ++iy) {
-    if (Math.random() < p) set(x, iy, RGB_ALIVE | 0xff000000);
+    if (Math.random() < p) set(x, iy, BGR_ALIVE | 0xff000000);
   }
 }
diff --git a/examples/game-of-life/build/optimized.wasm b/examples/game-of-life/build/optimized.wasm
index 98888cfe522bf2f56206e158590494b89649687b..db5cf7713f73f31e471ab04e4a4290fb58c5d94f 100644
GIT binary patch
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cNYiNi>3#ofcar8&65WTx{jdE0?I%I{2ll$I0RR91

delta 452
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diff --git a/examples/game-of-life/build/optimized.wat b/examples/game-of-life/build/optimized.wat
index 1a5108ca..21970622 100644
--- a/examples/game-of-life/build/optimized.wat
+++ b/examples/game-of-life/build/optimized.wat
@@ -3,8 +3,8 @@
  (type $F (func (result f64)))
  (type $v (func))
  (type $iiFv (func (param i32 i32 f64)))
- (import "env" "RGB_ALIVE" (global $assembly/index/RGB_ALIVE i32))
- (import "env" "RGB_DEAD" (global $assembly/index/RGB_DEAD i32))
+ (import "env" "BGR_ALIVE" (global $assembly/index/BGR_ALIVE i32))
+ (import "env" "BGR_DEAD" (global $assembly/index/BGR_DEAD i32))
  (import "env" "BIT_ROT" (global $assembly/index/BIT_ROT i32))
  (import "JSMath" "random" (func $~lib/math/JSMath.random (result f64)))
  (import "env" "memory" (memory $0 1))
@@ -17,104 +17,104 @@
  (export "memory" (memory $0))
  (func $assembly/index/init (; 1 ;) (type $iiv) (param $0 i32) (param $1 i32)
   (local $2 i32)
-  ;;@ assembly/index.ts:31:2
+  ;;@ assembly/index.ts:33:2
   (set_global $assembly/index/w
-   ;;@ assembly/index.ts:31:6
+   ;;@ assembly/index.ts:33:6
    (get_local $0)
   )
-  ;;@ assembly/index.ts:32:2
+  ;;@ assembly/index.ts:34:2
   (set_global $assembly/index/h
-   ;;@ assembly/index.ts:32:6
+   ;;@ assembly/index.ts:34:6
    (get_local $1)
   )
-  ;;@ assembly/index.ts:33:2
+  ;;@ assembly/index.ts:35:2
   (set_global $assembly/index/s
-   ;;@ assembly/index.ts:33:6
+   ;;@ assembly/index.ts:35:6
    (i32.mul
     (get_local $0)
-    ;;@ assembly/index.ts:33:14
+    ;;@ assembly/index.ts:35:14
     (get_local $1)
    )
   )
-  ;;@ assembly/index.ts:36:7
+  ;;@ assembly/index.ts:38:7
   (set_local $0
-   ;;@ assembly/index.ts:36:15
+   ;;@ assembly/index.ts:38:15
    (i32.const 0)
   )
   (loop $continue|0
    (if
-    ;;@ assembly/index.ts:36:18
+    ;;@ assembly/index.ts:38:18
     (i32.lt_s
      (get_local $0)
-     ;;@ assembly/index.ts:36:22
+     ;;@ assembly/index.ts:38:22
      (get_global $assembly/index/h)
     )
     (block
-     ;;@ assembly/index.ts:37:9
+     ;;@ assembly/index.ts:39:9
      (set_local $1
-      ;;@ assembly/index.ts:37:17
+      ;;@ assembly/index.ts:39:17
       (i32.const 0)
      )
      (loop $continue|1
       (if
-       ;;@ assembly/index.ts:37:20
+       ;;@ assembly/index.ts:39:20
        (i32.lt_s
         (get_local $1)
-        ;;@ assembly/index.ts:37:24
+        ;;@ assembly/index.ts:39:24
         (get_global $assembly/index/w)
        )
        (block
         (set_local $2
-         ;;@ assembly/index.ts:38:16
+         ;;@ assembly/index.ts:40:16
          (if (result i32)
           (f64.gt
-           ;;@ assembly/index.ts:38:21
+           ;;@ assembly/index.ts:40:21
            (call $~lib/math/JSMath.random)
-           ;;@ assembly/index.ts:38:32
+           ;;@ assembly/index.ts:40:32
            (f64.const 0.1)
           )
-          ;;@ assembly/index.ts:38:38
+          ;;@ assembly/index.ts:40:38
           (i32.and
-           (get_global $assembly/index/RGB_DEAD)
-           ;;@ assembly/index.ts:38:49
+           (get_global $assembly/index/BGR_DEAD)
+           ;;@ assembly/index.ts:40:49
            (i32.const 16777215)
           )
-          ;;@ assembly/index.ts:38:62
+          ;;@ assembly/index.ts:40:62
           (i32.or
-           (get_global $assembly/index/RGB_ALIVE)
-           ;;@ assembly/index.ts:38:74
+           (get_global $assembly/index/BGR_ALIVE)
+           ;;@ assembly/index.ts:40:74
            (i32.const -16777216)
           )
          )
         )
-        ;;@ assembly/index.ts:19:2
+        ;;@ assembly/index.ts:21:2
         (i32.store
-         ;;@ assembly/index.ts:19:13
+         ;;@ assembly/index.ts:21:13
          (i32.shl
           (i32.add
-           ;;@ assembly/index.ts:19:14
+           ;;@ assembly/index.ts:21:14
            (i32.add
             (get_global $assembly/index/s)
-            ;;@ assembly/index.ts:19:18
+            ;;@ assembly/index.ts:21:18
             (i32.mul
              (get_local $0)
-             ;;@ assembly/index.ts:19:22
+             ;;@ assembly/index.ts:21:22
              (get_global $assembly/index/w)
             )
            )
-           ;;@ assembly/index.ts:19:26
+           ;;@ assembly/index.ts:21:26
            (get_local $1)
           )
-          ;;@ assembly/index.ts:19:32
+          ;;@ assembly/index.ts:21:32
           (i32.const 2)
          )
-         ;;@ assembly/index.ts:19:35
+         ;;@ assembly/index.ts:21:35
          (get_local $2)
         )
-        ;;@ assembly/index.ts:37:27
+        ;;@ assembly/index.ts:39:27
         (set_local $1
          (i32.add
-          ;;@ assembly/index.ts:37:29
+          ;;@ assembly/index.ts:39:29
           (get_local $1)
           (i32.const 1)
          )
@@ -123,10 +123,10 @@
        )
       )
      )
-     ;;@ assembly/index.ts:36:25
+     ;;@ assembly/index.ts:38:25
      (set_local $0
       (i32.add
-       ;;@ assembly/index.ts:36:27
+       ;;@ assembly/index.ts:38:27
        (get_local $0)
        (i32.const 1)
       )
@@ -146,82 +146,82 @@
   (local $6 i32)
   (local $7 i32)
   (local $8 i32)
-  (set_local $5
-   ;;@ assembly/index.ts:45:12
+  (set_local $7
+   ;;@ assembly/index.ts:47:12
    (i32.sub
     (get_global $assembly/index/h)
-    ;;@ assembly/index.ts:45:16
+    ;;@ assembly/index.ts:47:16
     (i32.const 1)
    )
   )
-  (set_local $6
-   ;;@ assembly/index.ts:46:12
+  (set_local $8
+   ;;@ assembly/index.ts:48:12
    (i32.sub
     (get_global $assembly/index/w)
-    ;;@ assembly/index.ts:46:16
+    ;;@ assembly/index.ts:48:16
     (i32.const 1)
    )
   )
   (loop $continue|0
    (if
-    ;;@ assembly/index.ts:50:18
+    ;;@ assembly/index.ts:52:18
     (i32.lt_s
-     (get_local $2)
-     ;;@ assembly/index.ts:50:22
+     (get_local $0)
+     ;;@ assembly/index.ts:52:22
      (get_global $assembly/index/h)
     )
     (block
-     (set_local $7
-      ;;@ assembly/index.ts:51:14
+     (set_local $4
+      ;;@ assembly/index.ts:53:14
       (if (result i32)
-       (get_local $2)
-       ;;@ assembly/index.ts:51:29
+       (get_local $0)
+       ;;@ assembly/index.ts:53:29
        (i32.sub
-        (get_local $2)
-        ;;@ assembly/index.ts:51:33
+        (get_local $0)
+        ;;@ assembly/index.ts:53:33
         (i32.const 1)
        )
-       ;;@ assembly/index.ts:51:23
-       (get_local $5)
+       ;;@ assembly/index.ts:53:23
+       (get_local $7)
       )
      )
-     (set_local $8
-      ;;@ assembly/index.ts:52:14
+     (set_local $5
+      ;;@ assembly/index.ts:54:14
       (if (result i32)
        (i32.eq
-        (get_local $2)
-        ;;@ assembly/index.ts:52:19
-        (get_local $5)
+        (get_local $0)
+        ;;@ assembly/index.ts:54:19
+        (get_local $7)
        )
-       ;;@ assembly/index.ts:52:25
+       ;;@ assembly/index.ts:54:25
        (i32.const 0)
-       ;;@ assembly/index.ts:52:29
+       ;;@ assembly/index.ts:54:29
        (i32.add
-        (get_local $2)
-        ;;@ assembly/index.ts:52:33
+        (get_local $0)
+        ;;@ assembly/index.ts:54:33
         (i32.const 1)
        )
       )
      )
-     ;;@ assembly/index.ts:53:9
+     ;;@ assembly/index.ts:55:9
      (set_local $1
-      ;;@ assembly/index.ts:53:17
+      ;;@ assembly/index.ts:55:17
       (i32.const 0)
      )
      (loop $continue|1
       (if
-       ;;@ assembly/index.ts:53:20
+       ;;@ assembly/index.ts:55:20
        (i32.lt_s
         (get_local $1)
-        ;;@ assembly/index.ts:53:24
+        ;;@ assembly/index.ts:55:24
         (get_global $assembly/index/w)
        )
        (block
-        ;;@ assembly/index.ts:59:6
-        (set_local $0
-         ;;@ assembly/index.ts:59:27
+        ;;@ assembly/index.ts:61:6
+        (set_local $2
+         ;;@ assembly/index.ts:61:27
          (i32.add
-          ;;@ assembly/index.ts:60:8
+          ;;@ assembly/index.ts:62:8
           (i32.add
            (i32.add
             (i32.add
@@ -233,77 +233,71 @@
                   (i32.shl
                    (i32.add
                     (i32.mul
-                     (tee_local $0
-                      ;;@ assembly/index.ts:60:18
-                      (get_local $7)
-                     )
+                     (get_local $4)
                      (get_global $assembly/index/w)
                     )
                     (tee_local $3
-                     ;;@ assembly/index.ts:54:16
+                     ;;@ assembly/index.ts:56:16
                      (if (result i32)
                       (get_local $1)
-                      ;;@ assembly/index.ts:54:31
+                      ;;@ assembly/index.ts:56:31
                       (i32.sub
                        (get_local $1)
-                       ;;@ assembly/index.ts:54:35
+                       ;;@ assembly/index.ts:56:35
                        (i32.const 1)
                       )
-                      ;;@ assembly/index.ts:54:25
-                      (get_local $6)
+                      ;;@ assembly/index.ts:56:25
+                      (get_local $8)
                      )
                     )
                    )
                    (i32.const 2)
                   )
                  )
-                 ;;@ assembly/index.ts:60:25
+                 ;;@ assembly/index.ts:62:25
                  (i32.const 1)
                 )
-                ;;@ assembly/index.ts:60:30
+                ;;@ assembly/index.ts:62:30
                 (i32.and
                  (i32.load
                   (i32.shl
                    (i32.add
                     (i32.mul
-                     ;;@ assembly/index.ts:60:40
-                     (get_local $0)
+                     (get_local $4)
                      (get_global $assembly/index/w)
                     )
-                    ;;@ assembly/index.ts:60:35
                     (get_local $1)
                    )
                    (i32.const 2)
                   )
                  )
-                 ;;@ assembly/index.ts:60:47
+                 ;;@ assembly/index.ts:62:47
                  (i32.const 1)
                 )
                )
-               ;;@ assembly/index.ts:60:52
+               ;;@ assembly/index.ts:62:52
                (i32.and
                 (i32.load
                  (i32.shl
                   (i32.add
                    (i32.mul
-                    ;;@ assembly/index.ts:60:62
-                    (get_local $0)
+                    (get_local $4)
                     (get_global $assembly/index/w)
                    )
-                   (tee_local $4
-                    ;;@ assembly/index.ts:55:16
+                   (tee_local $2
+                    ;;@ assembly/index.ts:57:16
                     (if (result i32)
                      (i32.eq
                       (get_local $1)
-                      ;;@ assembly/index.ts:55:21
-                      (get_local $6)
+                      ;;@ assembly/index.ts:57:21
+                      (get_local $8)
                      )
-                     ;;@ assembly/index.ts:55:27
+                     ;;@ assembly/index.ts:57:27
                      (i32.const 0)
-                     ;;@ assembly/index.ts:55:31
+                     ;;@ assembly/index.ts:57:31
                      (i32.add
                       (get_local $1)
-                      ;;@ assembly/index.ts:55:35
+                      ;;@ assembly/index.ts:57:35
                       (i32.const 1)
                      )
                     )
@@ -312,155 +306,140 @@
                   (i32.const 2)
                  )
                 )
-                ;;@ assembly/index.ts:60:69
+                ;;@ assembly/index.ts:62:69
                 (i32.const 1)
                )
               )
-              ;;@ assembly/index.ts:61:8
+              ;;@ assembly/index.ts:63:8
               (i32.and
                (i32.load
                 (i32.shl
                  (i32.add
                   (i32.mul
-                   (tee_local $0
-                    ;;@ assembly/index.ts:61:18
-                    (get_local $2)
-                   )
+                   (get_local $0)
                    (get_global $assembly/index/w)
                   )
-                  ;;@ assembly/index.ts:61:13
                   (get_local $3)
                  )
                  (i32.const 2)
                 )
                )
-               ;;@ assembly/index.ts:61:25
+               ;;@ assembly/index.ts:63:25
                (i32.const 1)
               )
              )
-             ;;@ assembly/index.ts:61:52
+             ;;@ assembly/index.ts:63:52
              (i32.and
               (i32.load
                (i32.shl
                 (i32.add
                  (i32.mul
-                  ;;@ assembly/index.ts:61:62
                   (get_local $0)
                   (get_global $assembly/index/w)
                  )
-                 ;;@ assembly/index.ts:61:57
-                 (get_local $4)
+                 (get_local $2)
                 )
                 (i32.const 2)
                )
               )
-              ;;@ assembly/index.ts:61:69
+              ;;@ assembly/index.ts:63:69
               (i32.const 1)
              )
             )
-            ;;@ assembly/index.ts:62:8
+            ;;@ assembly/index.ts:64:8
             (i32.and
              (i32.load
               (i32.shl
                (i32.add
                 (i32.mul
-                 (tee_local $0
-                  ;;@ assembly/index.ts:62:18
-                  (get_local $8)
-                 )
+                 (get_local $5)
                  (get_global $assembly/index/w)
                 )
-                ;;@ assembly/index.ts:62:13
                 (get_local $3)
                )
                (i32.const 2)
               )
              )
-             ;;@ assembly/index.ts:62:25
+             ;;@ assembly/index.ts:64:25
              (i32.const 1)
             )
            )
-           ;;@ assembly/index.ts:62:30
+           ;;@ assembly/index.ts:64:30
            (i32.and
             (i32.load
              (i32.shl
               (i32.add
                (i32.mul
-                ;;@ assembly/index.ts:62:40
-                (get_local $0)
+                (get_local $5)
                 (get_global $assembly/index/w)
                )
-               ;;@ assembly/index.ts:62:35
                (get_local $1)
               )
               (i32.const 2)
              )
             )
-            ;;@ assembly/index.ts:62:47
+            ;;@ assembly/index.ts:64:47
             (i32.const 1)
            )
           )
-          ;;@ assembly/index.ts:62:52
+          ;;@ assembly/index.ts:64:52
           (i32.and
            (i32.load
             (i32.shl
              (i32.add
               (i32.mul
-               ;;@ assembly/index.ts:62:62
-               (get_local $0)
+               (get_local $5)
                (get_global $assembly/index/w)
               )
-              ;;@ assembly/index.ts:62:57
-              (get_local $4)
+              (get_local $2)
              )
              (i32.const 2)
             )
            )
-           ;;@ assembly/index.ts:62:69
+           ;;@ assembly/index.ts:64:69
            (i32.const 1)
           )
          )
         )
-        ;;@ assembly/index.ts:66:6
+        ;;@ assembly/index.ts:68:6
         (if
-         ;;@ assembly/index.ts:66:10
+         ;;@ assembly/index.ts:68:10
          (i32.and
-          ;;@ assembly/index.ts:65:6
+          ;;@ assembly/index.ts:67:6
           (tee_local $3
-           ;;@ assembly/index.ts:13:9
+           ;;@ assembly/index.ts:15:9
            (i32.load
-            ;;@ assembly/index.ts:13:19
+            ;;@ assembly/index.ts:15:19
             (i32.shl
              (i32.add
-              ;;@ assembly/index.ts:13:20
+              ;;@ assembly/index.ts:15:20
               (i32.mul
-               ;;@ assembly/index.ts:65:24
-               (get_local $2)
-               ;;@ assembly/index.ts:13:24
+               (get_local $0)
+               ;;@ assembly/index.ts:15:24
                (get_global $assembly/index/w)
               )
-              ;;@ assembly/index.ts:65:21
+              ;;@ assembly/index.ts:15:28
               (get_local $1)
              )
-             ;;@ assembly/index.ts:13:34
+             ;;@ assembly/index.ts:15:34
              (i32.const 2)
             )
            )
           )
-          ;;@ assembly/index.ts:66:17
+          ;;@ assembly/index.ts:68:17
           (i32.const 1)
          )
-         ;;@ assembly/index.ts:68:8
+         ;;@ assembly/index.ts:70:8
          (if
-          ;;@ assembly/index.ts:68:12
+          ;;@ assembly/index.ts:70:12
           (i32.eq
            (i32.and
-            ;;@ assembly/index.ts:68:13
-            (get_local $0)
-            ;;@ assembly/index.ts:68:30
+            ;;@ assembly/index.ts:70:13
+            (get_local $2)
+            ;;@ assembly/index.ts:70:30
             (i32.const 14)
            )
-           ;;@ assembly/index.ts:68:41
+           ;;@ assembly/index.ts:70:41
            (i32.const 2)
           )
           (i32.store
@@ -469,45 +448,36 @@
              (i32.add
               (get_global $assembly/index/s)
               (i32.mul
-               ;;@ assembly/index.ts:68:56
-               (get_local $2)
+               (get_local $0)
                (get_global $assembly/index/w)
               )
              )
-             ;;@ assembly/index.ts:68:53
              (get_local $1)
             )
             (i32.const 2)
            )
            (i32.or
             (i32.shl
-             (tee_local $3
-              (select
-               (tee_local $3
-                (i32.sub
-                 (i32.shr_u
-                  (tee_local $0
-                   ;;@ assembly/index.ts:68:59
-                   (get_local $3)
-                  )
-                  (i32.const 24)
-                 )
-                 (get_global $assembly/index/BIT_ROT)
+             (select
+              (tee_local $2
+               (i32.sub
+                (i32.shr_u
+                 (get_local $3)
+                 (i32.const 24)
                 )
+                (get_global $assembly/index/BIT_ROT)
                )
-               (tee_local $4
-                (i32.const 0)
-               )
-               (i32.gt_s
-                (get_local $3)
-                (i32.const 0)
-               )
+              )
+              (i32.const 0)
+              (i32.gt_s
+               (get_local $2)
+               (i32.const 0)
               )
              )
              (i32.const 24)
             )
             (i32.and
-             (get_local $0)
+             (get_local $3)
              (i32.const 16777215)
             )
            )
@@ -518,30 +488,28 @@
              (i32.add
               (get_global $assembly/index/s)
               (i32.mul
-               ;;@ assembly/index.ts:70:20
-               (get_local $2)
+               (get_local $0)
                (get_global $assembly/index/w)
               )
              )
-             ;;@ assembly/index.ts:70:17
              (get_local $1)
             )
             (i32.const 2)
            )
-           ;;@ assembly/index.ts:70:23
+           ;;@ assembly/index.ts:72:23
            (i32.or
-            (get_global $assembly/index/RGB_DEAD)
-            ;;@ assembly/index.ts:70:34
+            (get_global $assembly/index/BGR_DEAD)
+            ;;@ assembly/index.ts:72:34
             (i32.const -16777216)
            )
           )
          )
-         ;;@ assembly/index.ts:73:8
+         ;;@ assembly/index.ts:75:8
          (if
-          ;;@ assembly/index.ts:73:12
+          ;;@ assembly/index.ts:75:12
           (i32.eq
-           (get_local $0)
-           ;;@ assembly/index.ts:73:30
+           (get_local $2)
+           ;;@ assembly/index.ts:75:30
            (i32.const 3)
           )
           (i32.store
@@ -550,93 +518,85 @@
              (i32.add
               (get_global $assembly/index/s)
               (i32.mul
-               ;;@ assembly/index.ts:73:40
-               (get_local $2)
+               (get_local $0)
                (get_global $assembly/index/w)
               )
              )
-             ;;@ assembly/index.ts:73:37
              (get_local $1)
             )
             (i32.const 2)
            )
-           ;;@ assembly/index.ts:73:43
+           ;;@ assembly/index.ts:75:43
            (i32.or
-            (get_global $assembly/index/RGB_ALIVE)
-            ;;@ assembly/index.ts:73:55
+            (get_global $assembly/index/BGR_ALIVE)
+            ;;@ assembly/index.ts:75:55
             (i32.const -16777216)
            )
           )
-          ;;@ assembly/index.ts:19:2
+          ;;@ assembly/index.ts:21:2
           (i32.store
-           ;;@ assembly/index.ts:19:13
+           ;;@ assembly/index.ts:21:13
            (i32.shl
             (i32.add
-             ;;@ assembly/index.ts:19:14
+             ;;@ assembly/index.ts:21:14
              (i32.add
               (get_global $assembly/index/s)
-              ;;@ assembly/index.ts:19:18
+              ;;@ assembly/index.ts:21:18
               (i32.mul
-               ;;@ assembly/index.ts:75:20
-               (get_local $2)
-               ;;@ assembly/index.ts:19:22
+               (get_local $0)
+               ;;@ assembly/index.ts:21:22
                (get_global $assembly/index/w)
               )
              )
-             ;;@ assembly/index.ts:75:17
+             ;;@ assembly/index.ts:21:26
              (get_local $1)
             )
-            ;;@ assembly/index.ts:19:32
+            ;;@ assembly/index.ts:21:32
             (i32.const 2)
            )
-           ;;@ assembly/index.ts:26:12
+           ;;@ assembly/index.ts:28:12
            (i32.or
             (i32.shl
-             ;;@ assembly/index.ts:25:2
-             (tee_local $0
-              ;;@ assembly/index.ts:25:10
-              (select
-               (tee_local $0
-                ;;@ assembly/index.ts:25:19
-                (i32.sub
-                 (i32.shr_u
-                  ;;@ assembly/index.ts:75:23
-                  (get_local $3)
-                  ;;@ assembly/index.ts:25:26
-                  (i32.const 24)
-                 )
-                 ;;@ assembly/index.ts:25:32
-                 (get_global $assembly/index/BIT_ROT)
+             ;;@ assembly/index.ts:27:10
+             (select
+              (tee_local $2
+               ;;@ assembly/index.ts:27:19
+               (i32.sub
+                (i32.shr_u
+                 ;;@ assembly/index.ts:27:20
+                 (get_local $3)
+                 ;;@ assembly/index.ts:27:26
+                 (i32.const 24)
                 )
-               )
-               (tee_local $4
-                ;;@ assembly/index.ts:25:41
-                (i32.const 0)
-               )
-               (i32.gt_s
-                (get_local $0)
-                (i32.const 0)
+                ;;@ assembly/index.ts:27:32
+                (get_global $assembly/index/BIT_ROT)
                )
               )
+              ;;@ assembly/index.ts:27:41
+              (i32.const 0)
+              (i32.gt_s
+               (get_local $2)
+               (i32.const 0)
+              )
              )
-             ;;@ assembly/index.ts:26:18
+             ;;@ assembly/index.ts:28:18
              (i32.const 24)
             )
-            ;;@ assembly/index.ts:26:24
+            ;;@ assembly/index.ts:28:24
             (i32.and
-             ;;@ assembly/index.ts:26:25
+             ;;@ assembly/index.ts:28:25
              (get_local $3)
-             ;;@ assembly/index.ts:26:29
+             ;;@ assembly/index.ts:28:29
              (i32.const 16777215)
             )
            )
           )
          )
         )
-        ;;@ assembly/index.ts:53:27
+        ;;@ assembly/index.ts:55:27
         (set_local $1
          (i32.add
-          ;;@ assembly/index.ts:53:29
+          ;;@ assembly/index.ts:55:29
           (get_local $1)
           (i32.const 1)
          )
@@ -645,11 +605,11 @@
        )
       )
      )
-     ;;@ assembly/index.ts:50:25
-     (set_local $2
+     ;;@ assembly/index.ts:52:25
+     (set_local $0
       (i32.add
-       ;;@ assembly/index.ts:50:27
-       (get_local $2)
+       ;;@ assembly/index.ts:52:27
+       (get_local $0)
        (i32.const 1)
       )
      )
@@ -662,20 +622,20 @@
   (local $3 i32)
   (loop $continue|0
    (if
-    ;;@ assembly/index.ts:83:19
+    ;;@ assembly/index.ts:85:19
     (i32.lt_s
      (get_local $3)
-     ;;@ assembly/index.ts:83:24
+     ;;@ assembly/index.ts:85:24
      (get_global $assembly/index/w)
     )
     (block
-     ;;@ assembly/index.ts:84:4
+     ;;@ assembly/index.ts:86:4
      (if
-      ;;@ assembly/index.ts:84:8
+      ;;@ assembly/index.ts:86:8
       (f64.lt
-       ;;@ assembly/index.ts:84:13
+       ;;@ assembly/index.ts:86:13
        (call $~lib/math/JSMath.random)
-       ;;@ assembly/index.ts:84:24
+       ;;@ assembly/index.ts:86:24
        (get_local $2)
       )
       (i32.store
@@ -684,28 +644,26 @@
          (i32.add
           (get_global $assembly/index/s)
           (i32.mul
-           ;;@ assembly/index.ts:84:35
            (get_local $1)
            (get_global $assembly/index/w)
           )
          )
-         ;;@ assembly/index.ts:84:31
          (get_local $3)
         )
         (i32.const 2)
        )
-       ;;@ assembly/index.ts:84:38
+       ;;@ assembly/index.ts:86:38
        (i32.or
-        (get_global $assembly/index/RGB_ALIVE)
-        ;;@ assembly/index.ts:84:50
+        (get_global $assembly/index/BGR_ALIVE)
+        ;;@ assembly/index.ts:86:50
         (i32.const -16777216)
        )
       )
      )
-     ;;@ assembly/index.ts:83:27
+     ;;@ assembly/index.ts:85:27
      (set_local $3
       (i32.add
-       ;;@ assembly/index.ts:83:29
+       ;;@ assembly/index.ts:85:29
        (get_local $3)
        (i32.const 1)
       )
@@ -714,64 +672,63 @@
     )
    )
   )
-  ;;@ assembly/index.ts:86:7
-  (set_local $3
-   ;;@ assembly/index.ts:86:16
+  ;;@ assembly/index.ts:88:7
+  (set_local $1
+   ;;@ assembly/index.ts:88:16
    (i32.const 0)
   )
   (loop $continue|1
    (if
-    ;;@ assembly/index.ts:86:19
+    ;;@ assembly/index.ts:88:19
     (i32.lt_s
-     (get_local $3)
-     ;;@ assembly/index.ts:86:24
+     (get_local $1)
+     ;;@ assembly/index.ts:88:24
      (get_global $assembly/index/h)
     )
     (block
-     ;;@ assembly/index.ts:87:4
+     ;;@ assembly/index.ts:89:4
      (if
-      ;;@ assembly/index.ts:87:8
+      ;;@ assembly/index.ts:89:8
       (f64.lt
-       ;;@ assembly/index.ts:87:13
+       ;;@ assembly/index.ts:89:13
        (call $~lib/math/JSMath.random)
-       ;;@ assembly/index.ts:87:24
+       ;;@ assembly/index.ts:89:24
        (get_local $2)
       )
-      ;;@ assembly/index.ts:19:2
+      ;;@ assembly/index.ts:21:2
       (i32.store
-       ;;@ assembly/index.ts:19:13
+       ;;@ assembly/index.ts:21:13
        (i32.shl
         (i32.add
-         ;;@ assembly/index.ts:19:14
+         ;;@ assembly/index.ts:21:14
          (i32.add
           (get_global $assembly/index/s)
-          ;;@ assembly/index.ts:19:18
+          ;;@ assembly/index.ts:21:18
           (i32.mul
-           ;;@ assembly/index.ts:87:34
-           (get_local $3)
-           ;;@ assembly/index.ts:19:22
+           (get_local $1)
+           ;;@ assembly/index.ts:21:22
            (get_global $assembly/index/w)
           )
          )
-         ;;@ assembly/index.ts:87:31
+         ;;@ assembly/index.ts:21:26
          (get_local $0)
         )
-        ;;@ assembly/index.ts:19:32
+        ;;@ assembly/index.ts:21:32
         (i32.const 2)
        )
-       ;;@ assembly/index.ts:87:38
+       ;;@ assembly/index.ts:89:38
        (i32.or
-        (get_global $assembly/index/RGB_ALIVE)
-        ;;@ assembly/index.ts:87:50
+        (get_global $assembly/index/BGR_ALIVE)
+        ;;@ assembly/index.ts:89:50
         (i32.const -16777216)
        )
       )
      )
-     ;;@ assembly/index.ts:86:27
-     (set_local $3
+     ;;@ assembly/index.ts:88:27
+     (set_local $1
       (i32.add
-       ;;@ assembly/index.ts:86:29
-       (get_local $3)
+       ;;@ assembly/index.ts:88:29
+       (get_local $1)
        (i32.const 1)
       )
      )
diff --git a/examples/game-of-life/build/untouched.wat b/examples/game-of-life/build/untouched.wat
index 329e7774..1f0128f2 100644
--- a/examples/game-of-life/build/untouched.wat
+++ b/examples/game-of-life/build/untouched.wat
@@ -4,8 +4,8 @@
  (type $i (func (result i32)))
  (type $v (func))
  (type $iiFv (func (param i32 i32 f64)))
- (import "env" "RGB_ALIVE" (global $assembly/index/RGB_ALIVE i32))
- (import "env" "RGB_DEAD" (global $assembly/index/RGB_DEAD i32))
+ (import "env" "BGR_ALIVE" (global $assembly/index/BGR_ALIVE i32))
+ (import "env" "BGR_DEAD" (global $assembly/index/BGR_DEAD i32))
  (import "env" "BIT_ROT" (global $assembly/index/BIT_ROT i32))
  (import "JSMath" "random" (func $~lib/math/JSMath.random (result f64)))
  (import "env" "memory" (memory $0 1))
@@ -21,122 +21,112 @@
   (local $2 i32)
   (local $3 i32)
   (local $4 i32)
-  (local $5 i32)
-  (local $6 i32)
-  ;;@ assembly/index.ts:31:2
+  ;;@ assembly/index.ts:33:2
   (set_global $assembly/index/w
-   ;;@ assembly/index.ts:31:6
+   ;;@ assembly/index.ts:33:6
    (get_local $0)
   )
-  ;;@ assembly/index.ts:32:2
+  ;;@ assembly/index.ts:34:2
   (set_global $assembly/index/h
-   ;;@ assembly/index.ts:32:6
+   ;;@ assembly/index.ts:34:6
    (get_local $1)
   )
-  ;;@ assembly/index.ts:33:2
+  ;;@ assembly/index.ts:35:2
   (set_global $assembly/index/s
-   ;;@ assembly/index.ts:33:6
+   ;;@ assembly/index.ts:35:6
    (i32.mul
     (get_local $0)
-    ;;@ assembly/index.ts:33:14
+    ;;@ assembly/index.ts:35:14
     (get_local $1)
    )
   )
-  ;;@ assembly/index.ts:36:2
+  ;;@ assembly/index.ts:38:2
   (block $break|0
-   ;;@ assembly/index.ts:36:7
+   ;;@ assembly/index.ts:38:7
    (set_local $2
-    ;;@ assembly/index.ts:36:15
+    ;;@ assembly/index.ts:38:15
     (i32.const 0)
    )
    (loop $continue|0
     (if
-     ;;@ assembly/index.ts:36:18
+     ;;@ assembly/index.ts:38:18
      (i32.lt_s
       (get_local $2)
-      ;;@ assembly/index.ts:36:22
+      ;;@ assembly/index.ts:38:22
       (get_global $assembly/index/h)
      )
      (block
       (block
        (block $break|1
-        ;;@ assembly/index.ts:37:9
+        ;;@ assembly/index.ts:39:9
         (set_local $3
-         ;;@ assembly/index.ts:37:17
+         ;;@ assembly/index.ts:39:17
          (i32.const 0)
         )
         (loop $continue|1
          (if
-          ;;@ assembly/index.ts:37:20
+          ;;@ assembly/index.ts:39:20
           (i32.lt_s
            (get_local $3)
-           ;;@ assembly/index.ts:37:24
+           ;;@ assembly/index.ts:39:24
            (get_global $assembly/index/w)
           )
           (block
            (block
             (block $assembly/index/set|inlined.0
              (set_local $4
-              ;;@ assembly/index.ts:38:10
-              (get_local $3)
-             )
-             (set_local $5
-              ;;@ assembly/index.ts:38:13
-              (get_local $2)
-             )
-             (set_local $6
-              ;;@ assembly/index.ts:38:16
+              ;;@ assembly/index.ts:40:16
               (if (result i32)
                (f64.gt
-                ;;@ assembly/index.ts:38:21
+                ;;@ assembly/index.ts:40:21
                 (call $~lib/math/JSMath.random)
-                ;;@ assembly/index.ts:38:32
+                ;;@ assembly/index.ts:40:32
                 (f64.const 0.1)
                )
-               ;;@ assembly/index.ts:38:38
+               ;;@ assembly/index.ts:40:38
                (i32.and
-                (get_global $assembly/index/RGB_DEAD)
-                ;;@ assembly/index.ts:38:49
+                (get_global $assembly/index/BGR_DEAD)
+                ;;@ assembly/index.ts:40:49
                 (i32.const 16777215)
                )
-               ;;@ assembly/index.ts:38:62
+               ;;@ assembly/index.ts:40:62
                (i32.or
-                (get_global $assembly/index/RGB_ALIVE)
-                ;;@ assembly/index.ts:38:74
+                (get_global $assembly/index/BGR_ALIVE)
+                ;;@ assembly/index.ts:40:74
                 (i32.const -16777216)
                )
               )
              )
-             ;;@ assembly/index.ts:19:2
+             ;;@ assembly/index.ts:21:2
              (i32.store
-              ;;@ assembly/index.ts:19:13
+              ;;@ assembly/index.ts:21:13
               (i32.shl
                (i32.add
-                ;;@ assembly/index.ts:19:14
+                ;;@ assembly/index.ts:21:14
                 (i32.add
                  (get_global $assembly/index/s)
-                 ;;@ assembly/index.ts:19:18
+                 ;;@ assembly/index.ts:21:18
                  (i32.mul
-                  (get_local $5)
-                  ;;@ assembly/index.ts:19:22
+                  (get_local $2)
+                  ;;@ assembly/index.ts:21:22
                   (get_global $assembly/index/w)
                  )
                 )
-                ;;@ assembly/index.ts:19:26
-                (get_local $4)
+                ;;@ assembly/index.ts:21:26
+                (get_local $3)
                )
-               ;;@ assembly/index.ts:19:32
+               ;;@ assembly/index.ts:21:32
                (i32.const 2)
               )
-              ;;@ assembly/index.ts:19:35
-              (get_local $6)
+              ;;@ assembly/index.ts:21:35
+              (get_local $4)
              )
             )
            )
-           ;;@ assembly/index.ts:37:27
+           ;;@ assembly/index.ts:39:27
            (set_local $3
             (i32.add
-             ;;@ assembly/index.ts:37:29
+             ;;@ assembly/index.ts:39:29
              (get_local $3)
              (i32.const 1)
             )
@@ -147,10 +137,10 @@
         )
        )
       )
-      ;;@ assembly/index.ts:36:25
+      ;;@ assembly/index.ts:38:25
       (set_local $2
        (i32.add
-        ;;@ assembly/index.ts:36:27
+        ;;@ assembly/index.ts:38:27
         (get_local $2)
         (i32.const 1)
        )
@@ -178,141 +168,140 @@
   (local $13 i32)
   (local $14 i32)
   (local $15 i32)
-  (local $16 i32)
-  ;;@ assembly/index.ts:45:2
+  ;;@ assembly/index.ts:47:2
   (block
    (set_local $0
-    ;;@ assembly/index.ts:45:12
+    ;;@ assembly/index.ts:47:12
     (i32.sub
      (get_global $assembly/index/h)
-     ;;@ assembly/index.ts:45:16
+     ;;@ assembly/index.ts:47:16
      (i32.const 1)
     )
    )
    (set_local $1
-    ;;@ assembly/index.ts:46:12
+    ;;@ assembly/index.ts:48:12
     (i32.sub
      (get_global $assembly/index/w)
-     ;;@ assembly/index.ts:46:16
+     ;;@ assembly/index.ts:48:16
      (i32.const 1)
     )
    )
   )
-  ;;@ assembly/index.ts:50:2
+  ;;@ assembly/index.ts:52:2
   (block $break|0
-   ;;@ assembly/index.ts:50:7
+   ;;@ assembly/index.ts:52:7
    (set_local $2
-    ;;@ assembly/index.ts:50:15
+    ;;@ assembly/index.ts:52:15
     (i32.const 0)
    )
    (loop $continue|0
     (if
-     ;;@ assembly/index.ts:50:18
+     ;;@ assembly/index.ts:52:18
      (i32.lt_s
       (get_local $2)
-      ;;@ assembly/index.ts:50:22
+      ;;@ assembly/index.ts:52:22
       (get_global $assembly/index/h)
      )
      (block
       (block
        (block
         (set_local $3
-         ;;@ assembly/index.ts:51:14
+         ;;@ assembly/index.ts:53:14
          (if (result i32)
           (i32.eq
            (get_local $2)
-           ;;@ assembly/index.ts:51:19
+           ;;@ assembly/index.ts:53:19
            (i32.const 0)
           )
-          ;;@ assembly/index.ts:51:23
+          ;;@ assembly/index.ts:53:23
           (get_local $0)
-          ;;@ assembly/index.ts:51:29
+          ;;@ assembly/index.ts:53:29
           (i32.sub
            (get_local $2)
-           ;;@ assembly/index.ts:51:33
+           ;;@ assembly/index.ts:53:33
            (i32.const 1)
           )
          )
         )
         (set_local $4
-         ;;@ assembly/index.ts:52:14
+         ;;@ assembly/index.ts:54:14
          (if (result i32)
           (i32.eq
            (get_local $2)
-           ;;@ assembly/index.ts:52:19
+           ;;@ assembly/index.ts:54:19
            (get_local $0)
           )
-          ;;@ assembly/index.ts:52:25
+          ;;@ assembly/index.ts:54:25
           (i32.const 0)
-          ;;@ assembly/index.ts:52:29
+          ;;@ assembly/index.ts:54:29
           (i32.add
            (get_local $2)
-           ;;@ assembly/index.ts:52:33
+           ;;@ assembly/index.ts:54:33
            (i32.const 1)
           )
          )
         )
        )
-       ;;@ assembly/index.ts:53:4
+       ;;@ assembly/index.ts:55:4
        (block $break|1
-        ;;@ assembly/index.ts:53:9
+        ;;@ assembly/index.ts:55:9
         (set_local $5
-         ;;@ assembly/index.ts:53:17
+         ;;@ assembly/index.ts:55:17
          (i32.const 0)
         )
         (loop $continue|1
          (if
-          ;;@ assembly/index.ts:53:20
+          ;;@ assembly/index.ts:55:20
           (i32.lt_s
            (get_local $5)
-           ;;@ assembly/index.ts:53:24
+           ;;@ assembly/index.ts:55:24
            (get_global $assembly/index/w)
           )
           (block
            (block
             (block
              (set_local $6
-              ;;@ assembly/index.ts:54:16
+              ;;@ assembly/index.ts:56:16
               (if (result i32)
                (i32.eq
                 (get_local $5)
-                ;;@ assembly/index.ts:54:21
+                ;;@ assembly/index.ts:56:21
                 (i32.const 0)
                )
-               ;;@ assembly/index.ts:54:25
+               ;;@ assembly/index.ts:56:25
                (get_local $1)
-               ;;@ assembly/index.ts:54:31
+               ;;@ assembly/index.ts:56:31
                (i32.sub
                 (get_local $5)
-                ;;@ assembly/index.ts:54:35
+                ;;@ assembly/index.ts:56:35
                 (i32.const 1)
                )
               )
              )
              (set_local $7
-              ;;@ assembly/index.ts:55:16
+              ;;@ assembly/index.ts:57:16
               (if (result i32)
                (i32.eq
                 (get_local $5)
-                ;;@ assembly/index.ts:55:21
+                ;;@ assembly/index.ts:57:21
                 (get_local $1)
                )
-               ;;@ assembly/index.ts:55:27
+               ;;@ assembly/index.ts:57:27
                (i32.const 0)
-               ;;@ assembly/index.ts:55:31
+               ;;@ assembly/index.ts:57:31
                (i32.add
                 (get_local $5)
-                ;;@ assembly/index.ts:55:35
+                ;;@ assembly/index.ts:57:35
                 (i32.const 1)
                )
               )
              )
             )
-            ;;@ assembly/index.ts:59:6
+            ;;@ assembly/index.ts:61:6
             (set_local $8
-             ;;@ assembly/index.ts:59:27
+             ;;@ assembly/index.ts:61:27
              (i32.add
-              ;;@ assembly/index.ts:60:8
+              ;;@ assembly/index.ts:62:8
               (i32.add
                (i32.add
                 (i32.add
@@ -320,357 +309,267 @@
                   (i32.add
                    (i32.add
                     (i32.and
-                     ;;@ assembly/index.ts:60:9
+                     ;;@ assembly/index.ts:62:9
                      (block $assembly/index/get|inlined.0 (result i32)
-                      (set_local $8
-                       ;;@ assembly/index.ts:60:13
-                       (get_local $6)
-                      )
-                      (set_local $9
-                       ;;@ assembly/index.ts:60:18
-                       (get_local $3)
-                      )
                       (br $assembly/index/get|inlined.0
                        (i32.load
                         (i32.shl
                          (i32.add
                           (i32.mul
-                           (get_local $9)
+                           (get_local $3)
                            (get_global $assembly/index/w)
                           )
-                          (get_local $8)
+                          (get_local $6)
                          )
                          (i32.const 2)
                         )
                        )
                       )
                      )
-                     ;;@ assembly/index.ts:60:25
+                     ;;@ assembly/index.ts:62:25
                      (i32.const 1)
                     )
-                    ;;@ assembly/index.ts:60:30
+                    ;;@ assembly/index.ts:62:30
                     (i32.and
-                     ;;@ assembly/index.ts:60:31
+                     ;;@ assembly/index.ts:62:31
                      (block $assembly/index/get|inlined.1 (result i32)
-                      (set_local $9
-                       ;;@ assembly/index.ts:60:35
-                       (get_local $5)
-                      )
-                      (set_local $8
-                       ;;@ assembly/index.ts:60:40
-                       (get_local $3)
-                      )
                       (br $assembly/index/get|inlined.1
                        (i32.load
                         (i32.shl
                          (i32.add
                           (i32.mul
-                           (get_local $8)
+                           (get_local $3)
                            (get_global $assembly/index/w)
                           )
-                          (get_local $9)
+                          (get_local $5)
                          )
                          (i32.const 2)
                         )
                        )
                       )
                      )
-                     ;;@ assembly/index.ts:60:47
+                     ;;@ assembly/index.ts:62:47
                      (i32.const 1)
                     )
                    )
-                   ;;@ assembly/index.ts:60:52
+                   ;;@ assembly/index.ts:62:52
                    (i32.and
-                    ;;@ assembly/index.ts:60:53
+                    ;;@ assembly/index.ts:62:53
                     (block $assembly/index/get|inlined.2 (result i32)
-                     (set_local $8
-                      ;;@ assembly/index.ts:60:57
-                      (get_local $7)
-                     )
-                     (set_local $9
-                      ;;@ assembly/index.ts:60:62
-                      (get_local $3)
-                     )
                      (br $assembly/index/get|inlined.2
                       (i32.load
                        (i32.shl
                         (i32.add
                          (i32.mul
-                          (get_local $9)
+                          (get_local $3)
                           (get_global $assembly/index/w)
                          )
-                         (get_local $8)
+                         (get_local $7)
                         )
                         (i32.const 2)
                        )
                       )
                      )
                     )
-                    ;;@ assembly/index.ts:60:69
+                    ;;@ assembly/index.ts:62:69
                     (i32.const 1)
                    )
                   )
-                  ;;@ assembly/index.ts:61:8
+                  ;;@ assembly/index.ts:63:8
                   (i32.and
-                   ;;@ assembly/index.ts:61:9
+                   ;;@ assembly/index.ts:63:9
                    (block $assembly/index/get|inlined.3 (result i32)
-                    (set_local $9
-                     ;;@ assembly/index.ts:61:13
-                     (get_local $6)
-                    )
-                    (set_local $8
-                     ;;@ assembly/index.ts:61:18
-                     (get_local $2)
-                    )
                     (br $assembly/index/get|inlined.3
                      (i32.load
                       (i32.shl
                        (i32.add
                         (i32.mul
-                         (get_local $8)
+                         (get_local $2)
                          (get_global $assembly/index/w)
                         )
-                        (get_local $9)
+                        (get_local $6)
                        )
                        (i32.const 2)
                       )
                      )
                     )
                    )
-                   ;;@ assembly/index.ts:61:25
+                   ;;@ assembly/index.ts:63:25
                    (i32.const 1)
                   )
                  )
-                 ;;@ assembly/index.ts:61:52
+                 ;;@ assembly/index.ts:63:52
                  (i32.and
-                  ;;@ assembly/index.ts:61:53
+                  ;;@ assembly/index.ts:63:53
                   (block $assembly/index/get|inlined.4 (result i32)
-                   (set_local $8
-                    ;;@ assembly/index.ts:61:57
-                    (get_local $7)
-                   )
-                   (set_local $9
-                    ;;@ assembly/index.ts:61:62
-                    (get_local $2)
-                   )
                    (br $assembly/index/get|inlined.4
                     (i32.load
                      (i32.shl
                       (i32.add
                        (i32.mul
-                        (get_local $9)
+                        (get_local $2)
                         (get_global $assembly/index/w)
                        )
-                       (get_local $8)
+                       (get_local $7)
                       )
                       (i32.const 2)
                      )
                     )
                    )
                   )
-                  ;;@ assembly/index.ts:61:69
+                  ;;@ assembly/index.ts:63:69
                   (i32.const 1)
                  )
                 )
-                ;;@ assembly/index.ts:62:8
+                ;;@ assembly/index.ts:64:8
                 (i32.and
-                 ;;@ assembly/index.ts:62:9
+                 ;;@ assembly/index.ts:64:9
                  (block $assembly/index/get|inlined.5 (result i32)
-                  (set_local $9
-                   ;;@ assembly/index.ts:62:13
-                   (get_local $6)
-                  )
-                  (set_local $8
-                   ;;@ assembly/index.ts:62:18
-                   (get_local $4)
-                  )
                   (br $assembly/index/get|inlined.5
                    (i32.load
                     (i32.shl
                      (i32.add
                       (i32.mul
-                       (get_local $8)
+                       (get_local $4)
                        (get_global $assembly/index/w)
                       )
-                      (get_local $9)
+                      (get_local $6)
                      )
                      (i32.const 2)
                     )
                    )
                   )
                  )
-                 ;;@ assembly/index.ts:62:25
+                 ;;@ assembly/index.ts:64:25
                  (i32.const 1)
                 )
                )
-               ;;@ assembly/index.ts:62:30
+               ;;@ assembly/index.ts:64:30
                (i32.and
-                ;;@ assembly/index.ts:62:31
+                ;;@ assembly/index.ts:64:31
                 (block $assembly/index/get|inlined.6 (result i32)
-                 (set_local $8
-                  ;;@ assembly/index.ts:62:35
-                  (get_local $5)
-                 )
-                 (set_local $9
-                  ;;@ assembly/index.ts:62:40
-                  (get_local $4)
-                 )
                  (br $assembly/index/get|inlined.6
                   (i32.load
                    (i32.shl
                     (i32.add
                      (i32.mul
-                      (get_local $9)
+                      (get_local $4)
                       (get_global $assembly/index/w)
                      )
-                     (get_local $8)
+                     (get_local $5)
                     )
                     (i32.const 2)
                    )
                   )
                  )
                 )
-                ;;@ assembly/index.ts:62:47
+                ;;@ assembly/index.ts:64:47
                 (i32.const 1)
                )
               )
-              ;;@ assembly/index.ts:62:52
+              ;;@ assembly/index.ts:64:52
               (i32.and
-               ;;@ assembly/index.ts:62:53
+               ;;@ assembly/index.ts:64:53
                (block $assembly/index/get|inlined.7 (result i32)
-                (set_local $9
-                 ;;@ assembly/index.ts:62:57
-                 (get_local $7)
-                )
-                (set_local $8
-                 ;;@ assembly/index.ts:62:62
-                 (get_local $4)
-                )
                 (br $assembly/index/get|inlined.7
                  (i32.load
                   (i32.shl
                    (i32.add
                     (i32.mul
-                     (get_local $8)
+                     (get_local $4)
                      (get_global $assembly/index/w)
                     )
-                    (get_local $9)
+                    (get_local $7)
                    )
                    (i32.const 2)
                   )
                  )
                 )
                )
-               ;;@ assembly/index.ts:62:69
+               ;;@ assembly/index.ts:64:69
                (i32.const 1)
               )
              )
             )
-            ;;@ assembly/index.ts:65:6
-            (set_local $10
-             ;;@ assembly/index.ts:65:17
+            ;;@ assembly/index.ts:67:6
+            (set_local $9
+             ;;@ assembly/index.ts:67:17
              (block $assembly/index/get|inlined.8 (result i32)
-              (set_local $9
-               ;;@ assembly/index.ts:65:21
-               (get_local $5)
-              )
-              (set_local $10
-               ;;@ assembly/index.ts:65:24
-               (get_local $2)
-              )
-              ;;@ assembly/index.ts:13:35
+              ;;@ assembly/index.ts:15:35
               (br $assembly/index/get|inlined.8
-               ;;@ assembly/index.ts:13:9
+               ;;@ assembly/index.ts:15:9
                (i32.load
-                ;;@ assembly/index.ts:13:19
+                ;;@ assembly/index.ts:15:19
                 (i32.shl
                  (i32.add
-                  ;;@ assembly/index.ts:13:20
+                  ;;@ assembly/index.ts:15:20
                   (i32.mul
-                   (get_local $10)
-                   ;;@ assembly/index.ts:13:24
+                   (get_local $2)
+                   ;;@ assembly/index.ts:15:24
                    (get_global $assembly/index/w)
                   )
-                  ;;@ assembly/index.ts:13:28
-                  (get_local $9)
+                  ;;@ assembly/index.ts:15:28
+                  (get_local $5)
                  )
-                 ;;@ assembly/index.ts:13:34
+                 ;;@ assembly/index.ts:15:34
                  (i32.const 2)
                 )
                )
               )
              )
             )
-            ;;@ assembly/index.ts:66:6
+            ;;@ assembly/index.ts:68:6
             (if
-             ;;@ assembly/index.ts:66:10
+             ;;@ assembly/index.ts:68:10
              (i32.and
-              (get_local $10)
-              ;;@ assembly/index.ts:66:17
+              (get_local $9)
+              ;;@ assembly/index.ts:68:17
               (i32.const 1)
              )
-             ;;@ assembly/index.ts:68:8
+             ;;@ assembly/index.ts:70:8
              (if
-              ;;@ assembly/index.ts:68:12
+              ;;@ assembly/index.ts:70:12
               (i32.eq
                (i32.and
-                ;;@ assembly/index.ts:68:13
+                ;;@ assembly/index.ts:70:13
                 (get_local $8)
-                ;;@ assembly/index.ts:68:30
+                ;;@ assembly/index.ts:70:30
                 (i32.const 14)
                )
-               ;;@ assembly/index.ts:68:41
+               ;;@ assembly/index.ts:70:41
                (i32.const 2)
               )
-              ;;@ assembly/index.ts:68:49
+              ;;@ assembly/index.ts:70:49
               (block $assembly/index/rot|inlined.0
-               (set_local $9
-                ;;@ assembly/index.ts:68:53
-                (get_local $5)
-               )
-               (set_local $11
-                ;;@ assembly/index.ts:68:56
-                (get_local $2)
-               )
-               (set_local $12
-                ;;@ assembly/index.ts:68:59
-                (get_local $10)
-               )
-               (set_local $13
+               (set_local $10
                 (select
-                 (tee_local $13
+                 (tee_local $10
                   (i32.sub
                    (i32.shr_u
-                    (get_local $12)
+                    (get_local $9)
                     (i32.const 24)
                    )
                    (get_global $assembly/index/BIT_ROT)
                   )
                  )
-                 (tee_local $14
+                 (tee_local $11
                   (i32.const 0)
                  )
                  (i32.gt_s
-                  (get_local $13)
-                  (get_local $14)
+                  (get_local $10)
+                  (get_local $11)
                  )
                 )
                )
                (block $assembly/index/set|inlined.1
-                (set_local $14
-                 (get_local $9)
-                )
-                (set_local $15
-                 (get_local $11)
-                )
-                (set_local $16
+                (set_local $11
                  (i32.or
                   (i32.shl
-                   (get_local $13)
+                   (get_local $10)
                    (i32.const 24)
                   )
                   (i32.and
-                   (get_local $12)
+                   (get_local $9)
                    (i32.const 16777215)
                   )
                  )
@@ -681,33 +580,25 @@
                    (i32.add
                     (get_global $assembly/index/s)
                     (i32.mul
-                     (get_local $15)
+                     (get_local $2)
                      (get_global $assembly/index/w)
                     )
                    )
-                   (get_local $14)
+                   (get_local $5)
                   )
                   (i32.const 2)
                  )
-                 (get_local $16)
+                 (get_local $11)
                 )
                )
               )
-              ;;@ assembly/index.ts:70:13
+              ;;@ assembly/index.ts:72:13
               (block $assembly/index/set|inlined.2
-               (set_local $13
-                ;;@ assembly/index.ts:70:17
-                (get_local $5)
-               )
                (set_local $12
-                ;;@ assembly/index.ts:70:20
-                (get_local $2)
-               )
-               (set_local $11
-                ;;@ assembly/index.ts:70:23
+                ;;@ assembly/index.ts:72:23
                 (i32.or
-                 (get_global $assembly/index/RGB_DEAD)
-                 ;;@ assembly/index.ts:70:34
+                 (get_global $assembly/index/BGR_DEAD)
+                 ;;@ assembly/index.ts:72:34
                  (i32.const -16777216)
                 )
                )
@@ -717,41 +608,33 @@
                   (i32.add
                    (get_global $assembly/index/s)
                    (i32.mul
-                    (get_local $12)
+                    (get_local $2)
                     (get_global $assembly/index/w)
                    )
                   )
-                  (get_local $13)
+                  (get_local $5)
                  )
                  (i32.const 2)
                 )
-                (get_local $11)
+                (get_local $12)
                )
               )
              )
-             ;;@ assembly/index.ts:73:8
+             ;;@ assembly/index.ts:75:8
              (if
-              ;;@ assembly/index.ts:73:12
+              ;;@ assembly/index.ts:75:12
               (i32.eq
                (get_local $8)
-               ;;@ assembly/index.ts:73:30
+               ;;@ assembly/index.ts:75:30
                (i32.const 3)
               )
-              ;;@ assembly/index.ts:73:33
+              ;;@ assembly/index.ts:75:33
               (block $assembly/index/set|inlined.3
-               (set_local $11
-                ;;@ assembly/index.ts:73:37
-                (get_local $5)
-               )
-               (set_local $12
-                ;;@ assembly/index.ts:73:40
-                (get_local $2)
-               )
                (set_local $13
-                ;;@ assembly/index.ts:73:43
+                ;;@ assembly/index.ts:75:43
                 (i32.or
-                 (get_global $assembly/index/RGB_ALIVE)
-                 ;;@ assembly/index.ts:73:55
+                 (get_global $assembly/index/BGR_ALIVE)
+                 ;;@ assembly/index.ts:75:55
                  (i32.const -16777216)
                 )
                )
@@ -761,119 +644,99 @@
                   (i32.add
                    (get_global $assembly/index/s)
                    (i32.mul
-                    (get_local $12)
+                    (get_local $2)
                     (get_global $assembly/index/w)
                    )
                   )
-                  (get_local $11)
+                  (get_local $5)
                  )
                  (i32.const 2)
                 )
                 (get_local $13)
                )
               )
-              ;;@ assembly/index.ts:75:13
+              ;;@ assembly/index.ts:77:13
               (block $assembly/index/rot|inlined.1
-               (set_local $13
-                ;;@ assembly/index.ts:75:17
-                (get_local $5)
-               )
-               (set_local $12
-                ;;@ assembly/index.ts:75:20
-                (get_local $2)
-               )
-               (set_local $11
-                ;;@ assembly/index.ts:75:23
-                (get_local $10)
-               )
-               ;;@ assembly/index.ts:25:2
-               (set_local $9
-                ;;@ assembly/index.ts:25:10
+               ;;@ assembly/index.ts:27:2
+               (set_local $14
+                ;;@ assembly/index.ts:27:10
                 (select
-                 (tee_local $9
-                  ;;@ assembly/index.ts:25:19
+                 (tee_local $14
+                  ;;@ assembly/index.ts:27:19
                   (i32.sub
                    (i32.shr_u
-                    ;;@ assembly/index.ts:25:20
-                    (get_local $11)
-                    ;;@ assembly/index.ts:25:26
+                    ;;@ assembly/index.ts:27:20
+                    (get_local $9)
+                    ;;@ assembly/index.ts:27:26
                     (i32.const 24)
                    )
-                   ;;@ assembly/index.ts:25:32
+                   ;;@ assembly/index.ts:27:32
                    (get_global $assembly/index/BIT_ROT)
                   )
                  )
-                 (tee_local $16
-                  ;;@ assembly/index.ts:25:41
+                 (tee_local $15
+                  ;;@ assembly/index.ts:27:41
                   (i32.const 0)
                  )
                  (i32.gt_s
-                  (get_local $9)
-                  (get_local $16)
+                  (get_local $14)
+                  (get_local $15)
                  )
                 )
                )
-               ;;@ assembly/index.ts:26:2
+               ;;@ assembly/index.ts:28:2
                (block $assembly/index/set|inlined.4
-                (set_local $16
-                 ;;@ assembly/index.ts:26:6
-                 (get_local $13)
-                )
                 (set_local $15
-                 ;;@ assembly/index.ts:26:9
-                 (get_local $12)
-                )
-                (set_local $14
-                 ;;@ assembly/index.ts:26:12
+                 ;;@ assembly/index.ts:28:12
                  (i32.or
                   (i32.shl
-                   ;;@ assembly/index.ts:26:13
-                   (get_local $9)
-                   ;;@ assembly/index.ts:26:18
+                   ;;@ assembly/index.ts:28:13
+                   (get_local $14)
+                   ;;@ assembly/index.ts:28:18
                    (i32.const 24)
                   )
-                  ;;@ assembly/index.ts:26:24
+                  ;;@ assembly/index.ts:28:24
                   (i32.and
-                   ;;@ assembly/index.ts:26:25
-                   (get_local $11)
-                   ;;@ assembly/index.ts:26:29
+                   ;;@ assembly/index.ts:28:25
+                   (get_local $9)
+                   ;;@ assembly/index.ts:28:29
                    (i32.const 16777215)
                   )
                  )
                 )
-                ;;@ assembly/index.ts:19:2
+                ;;@ assembly/index.ts:21:2
                 (i32.store
-                 ;;@ assembly/index.ts:19:13
+                 ;;@ assembly/index.ts:21:13
                  (i32.shl
                   (i32.add
-                   ;;@ assembly/index.ts:19:14
+                   ;;@ assembly/index.ts:21:14
                    (i32.add
                     (get_global $assembly/index/s)
-                    ;;@ assembly/index.ts:19:18
+                    ;;@ assembly/index.ts:21:18
                     (i32.mul
-                     (get_local $15)
-                     ;;@ assembly/index.ts:19:22
+                     (get_local $2)
+                     ;;@ assembly/index.ts:21:22
                      (get_global $assembly/index/w)
                     )
                    )
-                   ;;@ assembly/index.ts:19:26
-                   (get_local $16)
+                   ;;@ assembly/index.ts:21:26
+                   (get_local $5)
                   )
-                  ;;@ assembly/index.ts:19:32
+                  ;;@ assembly/index.ts:21:32
                   (i32.const 2)
                  )
-                 ;;@ assembly/index.ts:19:35
-                 (get_local $14)
+                 ;;@ assembly/index.ts:21:35
+                 (get_local $15)
                 )
                )
               )
              )
             )
            )
-           ;;@ assembly/index.ts:53:27
+           ;;@ assembly/index.ts:55:27
            (set_local $5
             (i32.add
-             ;;@ assembly/index.ts:53:29
+             ;;@ assembly/index.ts:55:29
              (get_local $5)
              (i32.const 1)
             )
@@ -884,10 +747,10 @@
         )
        )
       )
-      ;;@ assembly/index.ts:50:25
+      ;;@ assembly/index.ts:52:25
       (set_local $2
        (i32.add
-        ;;@ assembly/index.ts:50:27
+        ;;@ assembly/index.ts:52:27
         (get_local $2)
         (i32.const 1)
        )
@@ -903,47 +766,39 @@
   (local $4 i32)
   (local $5 i32)
   (local $6 i32)
-  ;;@ assembly/index.ts:83:2
+  ;;@ assembly/index.ts:85:2
   (block $break|0
-   ;;@ assembly/index.ts:83:7
+   ;;@ assembly/index.ts:85:7
    (set_local $3
-    ;;@ assembly/index.ts:83:16
+    ;;@ assembly/index.ts:85:16
     (i32.const 0)
    )
    (loop $continue|0
     (if
-     ;;@ assembly/index.ts:83:19
+     ;;@ assembly/index.ts:85:19
      (i32.lt_s
       (get_local $3)
-      ;;@ assembly/index.ts:83:24
+      ;;@ assembly/index.ts:85:24
       (get_global $assembly/index/w)
      )
      (block
       (block
-       ;;@ assembly/index.ts:84:4
+       ;;@ assembly/index.ts:86:4
        (if
-        ;;@ assembly/index.ts:84:8
+        ;;@ assembly/index.ts:86:8
         (f64.lt
-         ;;@ assembly/index.ts:84:13
+         ;;@ assembly/index.ts:86:13
          (call $~lib/math/JSMath.random)
-         ;;@ assembly/index.ts:84:24
+         ;;@ assembly/index.ts:86:24
          (get_local $2)
         )
-        ;;@ assembly/index.ts:84:27
+        ;;@ assembly/index.ts:86:27
         (block $assembly/index/set|inlined.5
          (set_local $4
-          ;;@ assembly/index.ts:84:31
-          (get_local $3)
-         )
-         (set_local $5
-          ;;@ assembly/index.ts:84:35
-          (get_local $1)
-         )
-         (set_local $6
-          ;;@ assembly/index.ts:84:38
+          ;;@ assembly/index.ts:86:38
           (i32.or
-           (get_global $assembly/index/RGB_ALIVE)
-           ;;@ assembly/index.ts:84:50
+           (get_global $assembly/index/BGR_ALIVE)
+           ;;@ assembly/index.ts:86:50
            (i32.const -16777216)
           )
          )
@@ -953,23 +808,23 @@
             (i32.add
              (get_global $assembly/index/s)
              (i32.mul
-              (get_local $5)
+              (get_local $1)
               (get_global $assembly/index/w)
              )
             )
-            (get_local $4)
+            (get_local $3)
            )
            (i32.const 2)
           )
-          (get_local $6)
+          (get_local $4)
          )
         )
        )
       )
-      ;;@ assembly/index.ts:83:27
+      ;;@ assembly/index.ts:85:27
       (set_local $3
        (i32.add
-        ;;@ assembly/index.ts:83:29
+        ;;@ assembly/index.ts:85:29
         (get_local $3)
         (i32.const 1)
        )
@@ -979,82 +834,74 @@
     )
    )
   )
-  ;;@ assembly/index.ts:86:2
+  ;;@ assembly/index.ts:88:2
   (block $break|1
-   ;;@ assembly/index.ts:86:7
-   (set_local $3
-    ;;@ assembly/index.ts:86:16
+   ;;@ assembly/index.ts:88:7
+   (set_local $5
+    ;;@ assembly/index.ts:88:16
     (i32.const 0)
    )
    (loop $continue|1
     (if
-     ;;@ assembly/index.ts:86:19
+     ;;@ assembly/index.ts:88:19
      (i32.lt_s
-      (get_local $3)
-      ;;@ assembly/index.ts:86:24
+      (get_local $5)
+      ;;@ assembly/index.ts:88:24
       (get_global $assembly/index/h)
      )
      (block
       (block
-       ;;@ assembly/index.ts:87:4
+       ;;@ assembly/index.ts:89:4
        (if
-        ;;@ assembly/index.ts:87:8
+        ;;@ assembly/index.ts:89:8
         (f64.lt
-         ;;@ assembly/index.ts:87:13
+         ;;@ assembly/index.ts:89:13
          (call $~lib/math/JSMath.random)
-         ;;@ assembly/index.ts:87:24
+         ;;@ assembly/index.ts:89:24
          (get_local $2)
         )
-        ;;@ assembly/index.ts:87:27
+        ;;@ assembly/index.ts:89:27
         (block $assembly/index/set|inlined.6
          (set_local $6
-          ;;@ assembly/index.ts:87:31
-          (get_local $0)
-         )
-         (set_local $5
-          ;;@ assembly/index.ts:87:34
-          (get_local $3)
-         )
-         (set_local $4
-          ;;@ assembly/index.ts:87:38
+          ;;@ assembly/index.ts:89:38
           (i32.or
-           (get_global $assembly/index/RGB_ALIVE)
-           ;;@ assembly/index.ts:87:50
+           (get_global $assembly/index/BGR_ALIVE)
+           ;;@ assembly/index.ts:89:50
            (i32.const -16777216)
           )
          )
-         ;;@ assembly/index.ts:19:2
+         ;;@ assembly/index.ts:21:2
          (i32.store
-          ;;@ assembly/index.ts:19:13
+          ;;@ assembly/index.ts:21:13
           (i32.shl
            (i32.add
-            ;;@ assembly/index.ts:19:14
+            ;;@ assembly/index.ts:21:14
             (i32.add
              (get_global $assembly/index/s)
-             ;;@ assembly/index.ts:19:18
+             ;;@ assembly/index.ts:21:18
              (i32.mul
               (get_local $5)
-              ;;@ assembly/index.ts:19:22
+              ;;@ assembly/index.ts:21:22
               (get_global $assembly/index/w)
              )
             )
-            ;;@ assembly/index.ts:19:26
-            (get_local $6)
+            ;;@ assembly/index.ts:21:26
+            (get_local $0)
            )
-           ;;@ assembly/index.ts:19:32
+           ;;@ assembly/index.ts:21:32
            (i32.const 2)
           )
-          ;;@ assembly/index.ts:19:35
-          (get_local $4)
+          ;;@ assembly/index.ts:21:35
+          (get_local $6)
          )
         )
        )
       )
-      ;;@ assembly/index.ts:86:27
-      (set_local $3
+      ;;@ assembly/index.ts:88:27
+      (set_local $5
        (i32.add
-        ;;@ assembly/index.ts:86:29
-        (get_local $3)
+        ;;@ assembly/index.ts:88:29
+        (get_local $5)
         (i32.const 1)
        )
       )
diff --git a/examples/game-of-life/index.html b/examples/game-of-life/index.html
index efc17f23..a5049b73 100644
--- a/examples/game-of-life/index.html
+++ b/examples/game-of-life/index.html
@@ -62,8 +62,8 @@ fetch("build/optimized.wasm")
 .then(response => response.arrayBuffer())
 .then(buffer => WebAssembly.instantiate(buffer, {
   env: {
-    RGB_ALIVE : rgb2le(RGB_ALIVE) | 1, // little endian, LSB must be set
-    RGB_DEAD  : rgb2le(RGB_DEAD) & ~1, // little endian, LSB must not be set
+    BGR_ALIVE : rgb2bgr(RGB_ALIVE) | 1, // little endian, LSB must be set
+    BGR_DEAD  : rgb2bgr(RGB_DEAD) & ~1, // little endian, LSB must not be set
     BIT_ROT,
     memory,
     abort: function() {}
@@ -125,7 +125,8 @@ fetch("build/optimized.wasm")
   console.log(err.stack);
 });
 
-function rgb2le(rgb) {
+// see comment in assembly/index.ts on why this is useful
+function rgb2bgr(rgb) {
   return ((rgb >>> 16) & 0xff) | (rgb & 0xff00) | (rgb & 0xff) << 16;
 }
 </script>