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6ea2cff39a
Summary: This change enables the sin(x) cos(x) -> sincos(x) optimization on GNU target triples. This optimization was being inhibited when -ffast-math wasn't set because sincos in GLibC does not set errno, while sin and cos do. However, this optimization will only run if the attributes on the sin/cos calls include readnone, which is how clang represents the fact that it doesn't care about the errno values set by these functions (via the -fno-math-errno flag). Reviewers: hfinkel, bogner Subscribers: mcrosier, javed.absar, llvm-commits, paul.redmond Differential Revision: https://reviews.llvm.org/D32921 llvm-svn: 305204
66 lines
1.7 KiB
LLVM
66 lines
1.7 KiB
LLVM
; RUN: llc -mtriple=aarch64-linux-gnu -verify-machineinstrs -o - %s | FileCheck %s
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define float @test_sincos_f32(float %f) {
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; CHECK-LABEL: test_sincos_f32:
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%sin = call float @sinf(float %f) readnone
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%cos = call float @cosf(float %f) readnone
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; CHECK: bl sincosf
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%val = fadd float %sin, %cos
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ret float %val
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}
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define float @test_sincos_f32_errno(float %f) {
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; CHECK-LABEL: test_sincos_f32_errno:
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%sin = call float @sinf(float %f)
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%cos = call float @cosf(float %f)
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; CHECK: bl sinf
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; CHECK: bl cosf
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%val = fadd float %sin, %cos
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ret float %val
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}
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define double @test_sincos_f64(double %f) {
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; CHECK-LABEL: test_sincos_f64:
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%sin = call double @sin(double %f) readnone
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%cos = call double @cos(double %f) readnone
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%val = fadd double %sin, %cos
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; CHECK: bl sincos
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ret double %val
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}
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define double @test_sincos_f64_errno(double %f) {
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; CHECK-LABEL: test_sincos_f64_errno:
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%sin = call double @sin(double %f)
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%cos = call double @cos(double %f)
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%val = fadd double %sin, %cos
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; CHECK: bl sin
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; CHECK: bl cos
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ret double %val
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}
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define fp128 @test_sincos_f128(fp128 %f) {
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; CHECK-LABEL: test_sincos_f128:
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%sin = call fp128 @sinl(fp128 %f) readnone
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%cos = call fp128 @cosl(fp128 %f) readnone
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%val = fadd fp128 %sin, %cos
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; CHECK: bl sincosl
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ret fp128 %val
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}
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define fp128 @test_sincos_f128_errno(fp128 %f) {
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; CHECK-LABEL: test_sincos_f128_errno:
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%sin = call fp128 @sinl(fp128 %f)
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%cos = call fp128 @cosl(fp128 %f)
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%val = fadd fp128 %sin, %cos
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; CHECK: bl sinl
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; CHECK: bl cosl
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ret fp128 %val
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}
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declare float @sinf(float)
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declare double @sin(double)
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declare fp128 @sinl(fp128)
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declare float @cosf(float)
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declare double @cos(double)
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declare fp128 @cosl(fp128)
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