diff options
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp index 22f8b53e32..784a790eb0 100644 --- a/lib/Target/X86/X86InstrInfo.cpp +++ b/lib/Target/X86/X86InstrInfo.cpp @@ -1698,8 +1698,8 @@ bool X86InstrInfo::copyRegToReg(MachineBasicBlock &MBB, else if (!DestRC->hasSubClass(SrcRC)) { // Neither of GR64_NOREX or GR64_NOSP is a superclass of the other, // but we want to copy then as GR64. - if (SrcRC->hasSuperClass(&X86::GR64RegClass) && - DestRC->hasSuperClass(&X86::GR64RegClass)) + if ((SrcRC == &X86::GR64RegClass || SrcRC->hasSuperClass(&X86::GR64RegClass)) && + (DestRC == &X86::GR64RegClass || DestRC->hasSuperClass(&X86::GR64RegClass))) CommonRC = &X86::GR64RegClass; else CommonRC = 0; |