adcad6adc9
We should always use fast math flags, remove these global flags incrementally. See also https://discourse.llvm.org/t/rfc-honor-pragmas-with-ffp-contract-fast/80797
80 lines
2.3 KiB
LLVM
80 lines
2.3 KiB
LLVM
; Check that 0.0 is not materialized for CSEL when comparing against it.
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; RUN: llc -mtriple=aarch64-linux-gnu -o - < %s | FileCheck %s
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define float @foeq(float %a, float %b) {
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%t = fcmp nsz oeq float %a, 0.0
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%v = select i1 %t, float 0.0, float %b
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ret float %v
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; CHECK-LABEL: foeq
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; CHECK: fcmp [[R:s[0-9]+]], #0.0
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; CHECK-NEXT: fcsel {{s[0-9]+}}, [[R]], {{s[0-9]+}}, eq
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}
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define float @fueq(float %a, float %b) {
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%t = fcmp nsz ueq float %a, 0.0
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%v = select i1 %t, float 0.0, float %b
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ret float %v
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; CHECK-LABEL: fueq
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; CHECK: fcmp [[R:s[0-9]+]], #0.0
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; CHECK-NEXT: fcsel {{s[0-9]+}}, [[R]], {{s[0-9]+}}, eq
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; CHECK-NEXT: fcsel {{s[0-9]+}}, [[R]], {{s[0-9]+}}, vs
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}
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define float @fone(float %a, float %b) {
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%t = fcmp nsz one float %a, 0.0
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%v = select i1 %t, float %b, float 0.0
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ret float %v
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; CHECK-LABEL: fone
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; CHECK: fcmp [[R:s[0-9]+]], #0.0
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; CHECK-NEXT: fcsel {{s[0-9]+}}, {{s[0-9]+}}, [[R]], mi
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; CHECK-NEXT: fcsel {{s[0-9]+}}, {{s[0-9]+}}, [[R]], gt
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}
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define float @fune(float %a, float %b) {
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%t = fcmp nsz une float %a, 0.0
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%v = select i1 %t, float %b, float 0.0
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ret float %v
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; CHECK-LABEL: fune
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; CHECK: fcmp [[R:s[0-9]+]], #0.0
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; CHECK-NEXT: fcsel {{s[0-9]+}}, {{s[0-9]+}}, [[R]], ne
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}
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define double @doeq(double %a, double %b) {
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%t = fcmp nsz oeq double %a, 0.0
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%v = select i1 %t, double 0.0, double %b
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ret double %v
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; CHECK-LABEL: doeq
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; CHECK: fcmp [[R:d[0-9]+]], #0.0
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; CHECK-NEXT: fcsel {{d[0-9]+}}, [[R]], {{d[0-9]+}}, eq
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}
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define double @dueq(double %a, double %b) {
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%t = fcmp nsz ueq double %a, 0.0
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%v = select i1 %t, double 0.0, double %b
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ret double %v
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; CHECK-LABEL: dueq
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; CHECK: fcmp [[R:d[0-9]+]], #0.0
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; CHECK-NEXT: fcsel {{d[0-9]+}}, [[R]], {{d[0-9]+}}, eq
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; CHECK-NEXT: fcsel {{d[0-9]+}}, [[R]], {{d[0-9]+}}, vs
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}
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define double @done(double %a, double %b) {
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%t = fcmp nsz one double %a, 0.0
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%v = select i1 %t, double %b, double 0.0
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ret double %v
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; CHECK-LABEL: done
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; CHECK: fcmp [[R:d[0-9]+]], #0.0
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; CHECK-NEXT: fcsel {{d[0-9]+}}, {{d[0-9]+}}, [[R]], mi
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; CHECK-NEXT: fcsel {{d[0-9]+}}, {{d[0-9]+}}, [[R]], gt
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}
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define double @dune(double %a, double %b) {
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%t = fcmp nsz une double %a, 0.0
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%v = select i1 %t, double %b, double 0.0
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ret double %v
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; CHECK-LABEL: dune
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; CHECK: fcmp [[R:d[0-9]+]], #0.0
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; CHECK-NEXT: fcsel {{d[0-9]+}}, {{d[0-9]+}}, [[R]], ne
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}
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