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Add Intel legalization for fmin and fmax.

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The native x86_fmin and x86_fmax instructions don't behave correctly for
NaN inputs and when comparing +0.0 to -0.0, so we need separate branches
for those cases.
This commit is contained in:
Jakob Stoklund Olesen
2017-09-27 11:02:57 -07:00
parent 384b04b411
commit b6b474a8c9
5 changed files with 136 additions and 5 deletions
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13
cranelift/filetests/wasm/f32-arith.cton
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@@ -85,8 +85,17 @@ ebb0(v0: f32, v1: f32):
return v2
}
; function %f32_min(f32, f32) -> f32
; function %f32_max(f32, f32) -> f32
function %f32_min(f32, f32) -> f32 {
ebb0(v0: f32, v1: f32):
v2 = fmin v0, v1
return v2
}
function %f32_max(f32, f32) -> f32 {
ebb0(v0: f32, v1: f32):
v2 = fmax v0, v1
return v2
}
function %f32_copysign(f32, f32) -> f32 {
ebb0(v0: f32, v1: f32):