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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
80 lines
2.1 KiB
LLVM
80 lines
2.1 KiB
LLVM
; Test that combined sin/cos library call is emitted when appropriate
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s --check-prefix=CHECK-OPT
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; RUN: llc < %s -mtriple=s390x-linux-gnu -enable-unsafe-fp-math | FileCheck %s --check-prefix=CHECK-OPT
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define float @f1(float %x) {
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; CHECK-OPT-LABEL: f1:
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; CHECK-OPT: brasl %r14, sincosf@PLT
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; CHECK-OPT: le %f0, 164(%r15)
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; CHECK-OPT: aeb %f0, 160(%r15)
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%tmp1 = call float @sinf(float %x) readnone
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%tmp2 = call float @cosf(float %x) readnone
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%add = fadd float %tmp1, %tmp2
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ret float %add
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}
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define float @f1_errno(float %x) {
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; CHECK-OPT-LABEL: f1_errno:
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; CHECK-OPT: brasl %r14, sinf@PLT
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; CHECK-OPT: ler %f9, %f0
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; CHECK-OPT: brasl %r14, cosf@PLT
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; CHECK-OPT: aebr %f0, %f9
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%tmp1 = call float @sinf(float %x)
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%tmp2 = call float @cosf(float %x)
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%add = fadd float %tmp1, %tmp2
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ret float %add
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}
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define double @f2(double %x) {
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; CHECK-OPT-LABEL: f2:
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; CHECK-OPT: brasl %r14, sincos@PLT
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; CHECK-OPT: ld %f0, 168(%r15)
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; CHECK-OPT: adb %f0, 160(%r15)
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%tmp1 = call double @sin(double %x) readnone
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%tmp2 = call double @cos(double %x) readnone
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%add = fadd double %tmp1, %tmp2
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ret double %add
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}
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define double @f2_errno(double %x) {
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; CHECK-OPT-LABEL: f2_errno:
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; CHECK-OPT: brasl %r14, sin@PLT
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; CHECK-OPT: ldr %f9, %f0
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; CHECK-OPT: brasl %r14, cos@PLT
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; CHECK-OPT: adbr %f0, %f9
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%tmp1 = call double @sin(double %x)
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%tmp2 = call double @cos(double %x)
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%add = fadd double %tmp1, %tmp2
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ret double %add
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}
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define fp128 @f3(fp128 %x) {
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; CHECK-OPT-LABEL: f3:
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; CHECK-OPT: brasl %r14, sincosl@PLT
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; CHECK-OPT: axbr
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%tmp1 = call fp128 @sinl(fp128 %x) readnone
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%tmp2 = call fp128 @cosl(fp128 %x) readnone
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%add = fadd fp128 %tmp1, %tmp2
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ret fp128 %add
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}
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define fp128 @f3_errno(fp128 %x) {
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; CHECK-OPT-LABEL: f3_errno:
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; CHECK-OPT: brasl %r14, sinl@PLT
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; CHECK-OPT: brasl %r14, cosl@PLT
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; CHECK-OPT: axbr
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%tmp1 = call fp128 @sinl(fp128 %x)
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%tmp2 = call fp128 @cosl(fp128 %x)
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%add = fadd fp128 %tmp1, %tmp2
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ret fp128 %add
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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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