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Improve per-bit divmod loop for mod & rem (#307)

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This commit is contained in:
Max Graey
2018-10-30 16:10:50 +02:00
committed by Daniel Wirtz
parent d864977a1a
commit d864bef1eb
7 changed files with 936 additions and 1079 deletions
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222
tests/compiler/std/mod.untouched.wat
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@ -33,7 +33,6 @@
(local $8 i32)
(local $9 i64)
(local $10 i64)
(local $11 i64)
(set_local $2
(i64.reinterpret/f64
(get_local $0)
@ -245,79 +244,68 @@
)
)
(block $break|0
(loop $repeat|0
(br_if $break|0
(i32.eqz
(i64.gt_s
(get_local $4)
(get_local $5)
)
(loop $continue|0
(if
(i64.gt_s
(get_local $4)
(get_local $5)
)
)
(block
(set_local $10
(i64.sub
(get_local $2)
(get_local $3)
)
)
(if
(i64.eqz
(i64.shr_u
(get_local $10)
(i64.const 63)
)
)
(block
(block
(if
(i64.eqz
(get_local $10)
(i64.ge_u
(get_local $2)
(get_local $3)
)
(return
(f64.mul
(f64.const 0)
(get_local $0)
(block
(if
(i64.eq
(get_local $2)
(get_local $3)
)
(return
(f64.mul
(f64.const 0)
(get_local $0)
)
)
)
(set_local $2
(i64.sub
(get_local $2)
(get_local $3)
)
)
)
)
(set_local $2
(get_local $10)
(i64.shl
(get_local $2)
(i64.const 1)
)
)
(set_local $4
(i64.sub
(get_local $4)
(i64.const 1)
)
)
)
)
(set_local $2
(i64.shl
(get_local $2)
(i64.const 1)
)
(br $continue|0)
)
)
(set_local $4
(i64.sub
(get_local $4)
(i64.const 1)
)
)
(br $repeat|0)
)
)
(set_local $10
(i64.sub
(get_local $2)
(get_local $3)
)
)
(if
(i64.eqz
(i64.shr_u
(get_local $10)
(i64.const 63)
)
(i64.ge_u
(get_local $2)
(get_local $3)
)
(block
(if
(i64.eqz
(get_local $10)
(i64.eq
(get_local $2)
(get_local $3)
)
(return
(f64.mul
@ -327,11 +315,14 @@
)
)
(set_local $2
(get_local $10)
(i64.sub
(get_local $2)
(get_local $3)
)
)
)
)
(set_local $11
(set_local $10
(i64.clz
(i64.shl
(get_local $2)
@ -342,13 +333,13 @@
(set_local $4
(i64.sub
(get_local $4)
(get_local $11)
(get_local $10)
)
)
(set_local $2
(i64.shl
(get_local $2)
(get_local $11)
(get_local $10)
)
)
(if
@ -484,7 +475,6 @@
(local $8 i32)
(local $9 i32)
(local $10 i32)
(local $11 i32)
(set_local $2
(i32.reinterpret/f32
(get_local $0)
@ -696,79 +686,68 @@
)
)
(block $break|0
(loop $repeat|0
(br_if $break|0
(i32.eqz
(i32.gt_s
(get_local $4)
(get_local $5)
)
(loop $continue|0
(if
(i32.gt_s
(get_local $4)
(get_local $5)
)
)
(block
(set_local $10
(i32.sub
(get_local $2)
(get_local $3)
)
)
(if
(i32.eqz
(i32.shr_u
(get_local $10)
(i32.const 31)
)
)
(block
(block
(if
(i32.eqz
(get_local $10)
(i32.ge_u
(get_local $2)
(get_local $3)
)
(return
(f32.mul
(f32.const 0)
(get_local $0)
(block
(if
(i32.eq
(get_local $2)
(get_local $3)
)
(return
(f32.mul
(f32.const 0)
(get_local $0)
)
)
)
(set_local $2
(i32.sub
(get_local $2)
(get_local $3)
)
)
)
)
(set_local $2
(get_local $10)
(i32.shl
(get_local $2)
(i32.const 1)
)
)
(set_local $4
(i32.sub
(get_local $4)
(i32.const 1)
)
)
)
)
(set_local $2
(i32.shl
(get_local $2)
(i32.const 1)
)
(br $continue|0)
)
)
(set_local $4
(i32.sub
(get_local $4)
(i32.const 1)
)
)
(br $repeat|0)
)
)
(set_local $10
(i32.sub
(get_local $2)
(get_local $3)
)
)
(if
(i32.eqz
(i32.shr_u
(get_local $10)
(i32.const 31)
)
(i32.ge_u
(get_local $2)
(get_local $3)
)
(block
(if
(i32.eqz
(get_local $10)
(i32.eq
(get_local $2)
(get_local $3)
)
(return
(f32.mul
@ -778,11 +757,14 @@
)
)
(set_local $2
(get_local $10)
(i32.sub
(get_local $2)
(get_local $3)
)
)
)
)
(set_local $11
(set_local $10
(i32.clz
(i32.shl
(get_local $2)
@ -793,13 +775,13 @@
(set_local $4
(i32.sub
(get_local $4)
(get_local $11)
(get_local $10)
)
)
(set_local $2
(i32.shl
(get_local $2)
(get_local $11)
(get_local $10)
)
)
(if