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| author | Craig Topper <craig.topper@gmail.com> | 2016-09-20 06:49:17 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@gmail.com> | 2016-09-20 06:49:17 +0000 |
| commit | 67882bd94e8c6887ad80c744be4843de2ded71a4 (patch) | |
| tree | 6d22799faf205644d548d3a5b9e804a9050b09c4 /llvm/lib/Target/X86/X86RegisterInfo.cpp | |
| parent | 9820e341f9727f5ddde5a934f7128ae269e4a866 (diff) | |
| download | bcm5719-llvm-67882bd94e8c6887ad80c744be4843de2ded71a4.tar.gz bcm5719-llvm-67882bd94e8c6887ad80c744be4843de2ded71a4.zip | |
[AVX-512] Teach X86InstrInfo::copyPhysReg to use a 512-bit move if XMM16-XMM31 or YMM16-YMM31 are the source or dest of the copy and VLX is not supported.
This can happen with SUBREG_TO_REG of ZMM16-ZMM31. Fixes PR30430.
llvm-svn: 281959
Diffstat (limited to 'llvm/lib/Target/X86/X86RegisterInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86RegisterInfo.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86RegisterInfo.cpp b/llvm/lib/Target/X86/X86RegisterInfo.cpp index 1b2fece6052..6324bd4a954 100644 --- a/llvm/lib/Target/X86/X86RegisterInfo.cpp +++ b/llvm/lib/Target/X86/X86RegisterInfo.cpp @@ -691,3 +691,13 @@ X86RegisterInfo::getPtrSizedFrameRegister(const MachineFunction &MF) const { FrameReg = getX86SubSuperRegister(FrameReg, 32); return FrameReg; } + +unsigned llvm::get512BitSuperRegister(unsigned Reg) { + if (Reg >= X86::XMM0 && Reg <= X86::XMM31) + return X86::ZMM0 + (Reg - X86::XMM0); + if (Reg >= X86::YMM0 && Reg <= X86::YMM31) + return X86::ZMM0 + (Reg - X86::YMM0); + if (Reg >= X86::ZMM0 && Reg <= X86::ZMM31) + return Reg; + llvm_unreachable("Unexpected SIMD register"); +} |
