From 6b3ddbeb7da2893cae2e2fe22131d0ac8c7ebfbe Mon Sep 17 00:00:00 2001 From: Craig Topper Date: Wed, 17 Apr 2019 06:09:11 +0000 Subject: [PATCH] [X86] In CopyToFromAsymmetricReg, use VR128 instead of FR32 instructions for GR32<->XMM register copies. We have two versions of some instructions, VR128 versions and FR32 versions that are marked as CodeGenOnly. This change switches to using the VR128 versions for these copies. It's after register allocation so the class size no longer matters. This matches how GR64 works. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@358555 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/X86/X86InstrInfo.cpp | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp index 57212205648..7b68cc2dc3a 100644 --- a/lib/Target/X86/X86InstrInfo.cpp +++ b/lib/Target/X86/X86InstrInfo.cpp @@ -2723,22 +2723,22 @@ static unsigned CopyToFromAsymmetricReg(unsigned DestReg, unsigned SrcReg, return X86::MMX_MOVD64to64rr; } - // SrcReg(FR32) -> DestReg(GR32) - // SrcReg(GR32) -> DestReg(FR32) + // SrcReg(VR128) -> DestReg(GR32) + // SrcReg(GR32) -> DestReg(VR128) if (X86::GR32RegClass.contains(DestReg) && - X86::FR32XRegClass.contains(SrcReg)) - // Copy from a FR32 register to a GR32 register. - return HasAVX512 ? X86::VMOVSS2DIZrr : - HasAVX ? X86::VMOVSS2DIrr : - X86::MOVSS2DIrr; + X86::VR128XRegClass.contains(SrcReg)) + // Copy from a VR128 register to a GR32 register. + return HasAVX512 ? X86::VMOVPDI2DIZrr : + HasAVX ? X86::VMOVPDI2DIrr : + X86::MOVPDI2DIrr; - if (X86::FR32XRegClass.contains(DestReg) && + if (X86::VR128XRegClass.contains(DestReg) && X86::GR32RegClass.contains(SrcReg)) - // Copy from a GR32 register to a FR32 register. - return HasAVX512 ? X86::VMOVDI2SSZrr : - HasAVX ? X86::VMOVDI2SSrr : - X86::MOVDI2SSrr; + // Copy from a VR128 register to a VR128 register. + return HasAVX512 ? X86::VMOVDI2PDIZrr : + HasAVX ? X86::VMOVDI2PDIrr : + X86::MOVDI2PDIrr; return 0; } -- 2.50.1