diff options
| author | Chris Lattner <sabre@nondot.org> | 2008-03-21 06:38:26 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2008-03-21 06:38:26 +0000 |
| commit | 24e0a546b40d67dd3662273eb4aef30c230a15ef (patch) | |
| tree | a13ccd51a3a64ca1fc6a6703e714c91cfa9778f1 /lib/Target/X86/X86InstrInfo.cpp | |
| parent | ae60ddc22ad243ea9ae2f4353e143190063f2322 (diff) | |
| download | llvm-24e0a546b40d67dd3662273eb4aef30c230a15ef.tar.gz llvm-24e0a546b40d67dd3662273eb4aef30c230a15ef.tar.bz2 llvm-24e0a546b40d67dd3662273eb4aef30c230a15ef.tar.xz | |
Add support for calls that return two FP values in
ST(0)/ST(1).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48634 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86InstrInfo.cpp')
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.cpp | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp index 650ab415ee..dc267942e1 100644 --- a/lib/Target/X86/X86InstrInfo.cpp +++ b/lib/Target/X86/X86InstrInfo.cpp @@ -1487,16 +1487,18 @@ void X86InstrInfo::copyRegToReg(MachineBasicBlock &MBB, // Moving from ST(0) turns into FpGET_ST0_32 etc. if (SrcRC == &X86::RSTRegClass) { - // Copying from ST(0). FIXME: handle ST(1) also - assert(SrcReg == X86::ST0 && "Can only copy from TOS right now"); + // Copying from ST(0)/ST(1). + assert((SrcReg == X86::ST0 || SrcReg == X86::ST1) && + "Can only copy from ST(0)/ST(1) right now"); + bool isST0 = SrcReg == X86::ST0; unsigned Opc; if (DestRC == &X86::RFP32RegClass) - Opc = X86::FpGET_ST0_32; + Opc = isST0 ? X86::FpGET_ST0_32 : X86::FpGET_ST1_32; else if (DestRC == &X86::RFP64RegClass) - Opc = X86::FpGET_ST0_64; + Opc = isST0 ? X86::FpGET_ST0_64 : X86::FpGET_ST1_64; else { assert(DestRC == &X86::RFP80RegClass); - Opc = X86::FpGET_ST0_80; + Opc = isST0 ? X86::FpGET_ST0_80 : X86::FpGET_ST1_80; } BuildMI(MBB, MI, get(Opc), DestReg); return; |