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| author | Manman Ren <manman.ren@gmail.com> | 2016-01-12 01:08:46 +0000 |
|---|---|---|
| committer | Manman Ren <manman.ren@gmail.com> | 2016-01-12 01:08:46 +0000 |
| commit | ed967f37520fec398aa419514de552e1a917c9ec (patch) | |
| tree | aaaa4eed9cdd440a9ae997dcdf05b87a62906a3a /llvm/lib/Target/X86/X86FastISel.cpp | |
| parent | 921b04e9a4b9cc854bbefeb644f95fdef9d9dd0c (diff) | |
| download | bcm5719-llvm-ed967f37520fec398aa419514de552e1a917c9ec.tar.gz bcm5719-llvm-ed967f37520fec398aa419514de552e1a917c9ec.zip | |
CXX_FAST_TLS calling convention: performance improvement for x86-64.
This is the same change on x86-64 as r255821 on AArch64.
rdar://9001553
llvm-svn: 257428
Diffstat (limited to 'llvm/lib/Target/X86/X86FastISel.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86FastISel.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86FastISel.cpp b/llvm/lib/Target/X86/X86FastISel.cpp index 629d4d3565f..f48b47934e0 100644 --- a/llvm/lib/Target/X86/X86FastISel.cpp +++ b/llvm/lib/Target/X86/X86FastISel.cpp @@ -1002,6 +1002,9 @@ bool X86FastISel::X86SelectRet(const Instruction *I) { if (!FuncInfo.CanLowerReturn) return false; + if (TLI.supportSplitCSR(FuncInfo.MF)) + return false; + CallingConv::ID CC = F.getCallingConv(); if (CC != CallingConv::C && CC != CallingConv::Fast && |
