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[CodeGen][X86] Fuchsia supports sincos* libcalls and sin+cos->sincos optimization

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Patch by Roland McGrath

Differential Revision: https://reviews.llvm.org/D35748

llvm-svn: 308854
This commit is contained in:
Petr Hosek 2017-07-23 22:30:00 +00:00
parent dc692f129b
commit f1d4340234
3 changed files with 9 additions and 4 deletions
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2
lib/CodeGen/TargetLoweringBase.cpp
View File

@ -97,7 +97,7 @@ static void InitLibcallNames(const char **Names, const Triple &TT) {
Names[RTLIB::FPROUND_F32_F16] = "__gnu_f2h_ieee";
}
if (TT.isGNUEnvironment()) {
if (TT.isGNUEnvironment() || TT.isOSFuchsia()) {
Names[RTLIB::SINCOS_F32] = "sincosf";
Names[RTLIB::SINCOS_F64] = "sincos";
Names[RTLIB::SINCOS_F80] = "sincosl";

9
lib/Target/X86/X86Subtarget.cpp
View File

@ -189,9 +189,12 @@ const char *X86Subtarget::getBZeroEntry() const {
}
bool X86Subtarget::hasSinCos() const {
return getTargetTriple().isMacOSX() &&
!getTargetTriple().isMacOSXVersionLT(10, 9) &&
is64Bit();
if (getTargetTriple().isMacOSX()) {
return !getTargetTriple().isMacOSXVersionLT(10, 9) && is64Bit();
} else if (getTargetTriple().isOSFuchsia()) {
return true;
}
return false;
}
/// Return true if the subtarget allows calls to immediate address.

2
test/CodeGen/X86/sincos-opt.ll
View File

@ -3,6 +3,8 @@
; RUN: llc < %s -mtriple=x86_64-pc-linux-gnu -mcpu=core2 | FileCheck %s --check-prefix=GNU_SINCOS
; RUN: llc < %s -mtriple=x86_64-pc-linux-gnu -mcpu=core2 -enable-unsafe-fp-math | FileCheck %s --check-prefix=GNU_SINCOS_FASTMATH
; RUN: llc < %s -mtriple=x86_64-pc-linux-gnux32 -mcpu=core2 -enable-unsafe-fp-math | FileCheck %s --check-prefix=GNU_SINCOS_FASTMATH
; RUN: llc < %s -mtriple=x86_64-fuchsia -mcpu=core2 | FileCheck %s --check-prefix=GNU_SINCOS
; RUN: llc < %s -mtriple=x86_64-fuchsia -mcpu=core2 -enable-unsafe-fp-math | FileCheck %s --check-prefix=GNU_SINCOS_FASTMATH
; Combine sin / cos into a single call unless they may write errno (as
; captured by readnone attrbiute, controlled by clang -fmath-errno