strict-fadd-combines.ll
1.44 KB
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; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s
define float @fneg_strict_fadd_to_strict_fsub(float %x, float %y) {
; CHECK: subss %{{.*}}, %{{.*}}
; CHECK-NEXT: retq
%neg = fneg float %y
%add = call float @llvm.experimental.constrained.fadd.f32(float %x, float %neg, metadata!"round.dynamic", metadata!"fpexcept.strict")
ret float %add
}
define float @fneg_strict_fadd_to_strict_fsub_2(float %x, float %y) {
; CHECK: subss %{{.*}}, %{{.*}}
; CHECK-NEXT: retq
%neg = fneg float %y
%add = call float @llvm.experimental.constrained.fadd.f32(float %neg, float %x, metadata!"round.dynamic", metadata!"fpexcept.strict")
ret float %add
}
define double @fneg_strict_fadd_to_strict_fsub_d(double %x, double %y) {
; CHECK: subsd %{{.*}}, %{{.*}}
; CHECK-NEXT: retq
%neg = fneg double %y
%add = call double @llvm.experimental.constrained.fadd.f64(double %x, double %neg, metadata!"round.dynamic", metadata!"fpexcept.strict")
ret double %add
}
define double @fneg_strict_fadd_to_strict_fsub_2d(double %x, double %y) {
; CHECK: subsd %{{.*}}, %{{.*}}
; CHECK-NEXT: retq
%neg = fneg double %y
%add = call double @llvm.experimental.constrained.fadd.f64(double %neg, double %x, metadata!"round.dynamic", metadata!"fpexcept.strict")
ret double %add
}
declare float @llvm.experimental.constrained.fadd.f32(float, float, metadata, metadata)
declare double @llvm.experimental.constrained.fadd.f64(double, double, metadata, metadata)