29 lines
970 B
LLVM
29 lines
970 B
LLVM
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; RUN: llc < %s -asm-verbose=false -wasm-keep-registers | FileCheck %s
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; DAGCombiner oddly folds casts into the rhs of copysign. Test that they get
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; unfolded.
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target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
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target triple = "wasm32-unknown-unknown"
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declare double @copysign(double, double) nounwind readnone
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declare float @copysignf(float, float) nounwind readnone
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; CHECK-LABEL: fold_promote:
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; CHECK: f64.promote_f32 $push0=, $pop{{[0-9]+}}{{$}}
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; CHECK: f64.copysign $push1=, $pop{{[0-9]+}}, $pop0{{$}}
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define double @fold_promote(double %a, float %b) {
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%c = fpext float %b to double
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%t = call double @copysign(double %a, double %c)
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ret double %t
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}
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; CHECK-LABEL: fold_demote:{{$}}
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; CHECK: f32.demote_f64 $push0=, $pop{{[0-9]+}}{{$}}
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; CHECK: f32.copysign $push1=, $pop{{[0-9]+}}, $pop0{{$}}
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define float @fold_demote(float %a, double %b) {
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%c = fptrunc double %b to float
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%t = call float @copysignf(float %a, float %c)
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ret float %t
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}
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