diff options
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp index d588afe28a..a13498e3ae 100644 --- a/lib/Target/X86/X86InstrInfo.cpp +++ b/lib/Target/X86/X86InstrInfo.cpp @@ -55,6 +55,11 @@ MachineInstr *X86InstrInfo::convertToThreeAddress(MachineInstr *MI) const { unsigned Dest = MI->getOperand(0).getReg(); unsigned Src = MI->getOperand(1).getReg(); + // FIXME: None of these instructions are promotable to LEAs without + // additional information. In particular, LEA doesn't set the flags that + // add and inc do. :( + return 0; + // FIXME: 16-bit LEA's are really slow on Athlons, but not bad on P4's. When // we have subtarget support, enable the 16-bit LEA generation here. bool DisableLEA16 = true; |