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Statically eliminate unnecessary branches in generic contexts

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In order to use the new compile time type checks in generics, untaken branches must be skipped because these might be invalid.
This commit is contained in:
dcodeIO
2018-03-17 14:40:58 +01:00
parent 2ed9fac171
commit 83e96892f2
18 changed files with 818 additions and 1769 deletions
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6
tests/compiler/builtins.optimized.wat
View File

@ -640,6 +640,12 @@
(set_global $builtins/F
(f64.const 25)
)
(if
(i32.eqz
(get_global $builtins/i)
)
(unreachable)
)
(if
(f32.eq
(tee_local $0

2
tests/compiler/builtins.ts
View File

@ -213,7 +213,7 @@ I = select<i64>(100, 200, false);
f = select<f32>(1.25, 2.5, true);
F = select<f64>(12.5, 25.0, false);
if (0) unreachable();
if (!i) unreachable();
// AS specific

4
tests/compiler/builtins.untouched.wat
View File

@ -1221,7 +1221,9 @@
)
)
(if
(i32.const 0)
(i32.eqz
(get_global $builtins/i)
)
(unreachable)
)
(drop

6
tests/compiler/showcase.optimized.wat
View File

@ -4066,6 +4066,12 @@
(set_global $builtins/F
(f64.const 25)
)
(if
(i32.eqz
(get_global $builtins/i)
)
(unreachable)
)
(if
(f32.eq
(tee_local $1

4
tests/compiler/showcase.untouched.wat
View File

@ -5614,7 +5614,9 @@
)
)
(if
(i32.const 0)
(i32.eqz
(get_global $builtins/i)
)
(unreachable)
)
(drop

1
tests/compiler/std/carray.untouched.wat
View File

@ -1,6 +1,7 @@
(module
(type $iiiiv (func (param i32 i32 i32 i32)))
(type $iii (func (param i32 i32) (result i32)))
(type $i (func (result i32)))
(type $iiiv (func (param i32 i32 i32)))
(type $v (func))
(import "env" "abort" (func $abort (param i32 i32 i32 i32)))

268
tests/compiler/std/polyfills.optimized.wat
View File

@ -217,73 +217,7 @@
(get_local $0)
)
)
(func "$(lib)/polyfills/bswap16<u32>" (; 5 ;) (type $ii) (param $0 i32) (result i32)
(local $1 i32)
(if
(i32.eqz
(i32.and
(if (result i32)
(tee_local $1
(i32.and
(i32.const 0)
(i32.const 1)
)
)
(get_local $1)
(i32.const 1)
)
(i32.const 1)
)
)
(block
(call $abort
(i32.const 0)
(i32.const 4)
(i32.const 25)
(i32.const 2)
)
(unreachable)
)
)
(if
(i32.and
(if (result i32)
(tee_local $1
(i32.const 0)
)
(get_local $1)
(i32.const 1)
)
(i32.const 1)
)
(return
(i32.or
(i32.or
(i32.and
(i32.shl
(get_local $0)
(i32.const 8)
)
(i32.const 65280)
)
(i32.and
(i32.shr_u
(get_local $0)
(i32.const 8)
)
(i32.const 255)
)
)
(i32.and
(get_local $0)
(i32.const -65536)
)
)
)
)
(get_local $0)
)
(func "$(lib)/polyfills/bswap<u32>" (; 6 ;) (type $ii) (param $0 i32) (result i32)
(func "$(lib)/polyfills/bswap<u32>" (; 5 ;) (type $ii) (param $0 i32) (result i32)
(local $1 i32)
(if
(i32.eqz
@ -337,73 +271,7 @@
)
)
)
(func "$(lib)/polyfills/bswap16<i32>" (; 7 ;) (type $ii) (param $0 i32) (result i32)
(local $1 i32)
(if
(i32.eqz
(i32.and
(if (result i32)
(tee_local $1
(i32.and
(i32.const 0)
(i32.const 1)
)
)
(get_local $1)
(i32.const 1)
)
(i32.const 1)
)
)
(block
(call $abort
(i32.const 0)
(i32.const 4)
(i32.const 25)
(i32.const 2)
)
(unreachable)
)
)
(if
(i32.and
(if (result i32)
(tee_local $1
(i32.const 0)
)
(get_local $1)
(i32.const 1)
)
(i32.const 1)
)
(return
(i32.or
(i32.or
(i32.and
(i32.shl
(get_local $0)
(i32.const 8)
)
(i32.const 65280)
)
(i32.and
(i32.shr_s
(get_local $0)
(i32.const 8)
)
(i32.const 255)
)
)
(i32.and
(get_local $0)
(i32.const -65536)
)
)
)
)
(get_local $0)
)
(func "$(lib)/polyfills/bswap<u64>" (; 8 ;) (type $II) (param $0 i64) (result i64)
(func "$(lib)/polyfills/bswap<u64>" (; 6 ;) (type $II) (param $0 i64) (result i64)
(local $1 i32)
(if
(i32.eqz
@ -477,6 +345,138 @@
(i64.const 32)
)
)
(func "$(lib)/polyfills/bswap16<u32>" (; 7 ;) (type $ii) (param $0 i32) (result i32)
(local $1 i32)
(if
(i32.eqz
(i32.and
(if (result i32)
(tee_local $1
(i32.and
(i32.const 0)
(i32.const 1)
)
)
(get_local $1)
(i32.const 1)
)
(i32.const 1)
)
)
(block
(call $abort
(i32.const 0)
(i32.const 4)
(i32.const 25)
(i32.const 2)
)
(unreachable)
)
)
(if
(i32.and
(if (result i32)
(tee_local $1
(i32.const 0)
)
(get_local $1)
(i32.const 1)
)
(i32.const 1)
)
(return
(i32.or
(i32.or
(i32.and
(i32.shl
(get_local $0)
(i32.const 8)
)
(i32.const 65280)
)
(i32.and
(i32.shr_u
(get_local $0)
(i32.const 8)
)
(i32.const 255)
)
)
(i32.and
(get_local $0)
(i32.const -65536)
)
)
)
)
(get_local $0)
)
(func "$(lib)/polyfills/bswap16<i32>" (; 8 ;) (type $ii) (param $0 i32) (result i32)
(local $1 i32)
(if
(i32.eqz
(i32.and
(if (result i32)
(tee_local $1
(i32.and
(i32.const 0)
(i32.const 1)
)
)
(get_local $1)
(i32.const 1)
)
(i32.const 1)
)
)
(block
(call $abort
(i32.const 0)
(i32.const 4)
(i32.const 25)
(i32.const 2)
)
(unreachable)
)
)
(if
(i32.and
(if (result i32)
(tee_local $1
(i32.const 0)
)
(get_local $1)
(i32.const 1)
)
(i32.const 1)
)
(return
(i32.or
(i32.or
(i32.and
(i32.shl
(get_local $0)
(i32.const 8)
)
(i32.const 65280)
)
(i32.and
(i32.shr_s
(get_local $0)
(i32.const 8)
)
(i32.const 255)
)
)
(i32.and
(get_local $0)
(i32.const -65536)
)
)
)
)
(get_local $0)
)
(func $start (; 9 ;) (type $v)
(if
(i32.ne

2159
tests/compiler/std/polyfills.untouched.wat
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