diff options
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp index ffe2083322..c9de586e78 100644 --- a/lib/Target/X86/X86InstrInfo.cpp +++ b/lib/Target/X86/X86InstrInfo.cpp @@ -37,6 +37,10 @@ namespace { cl::desc("Print instructions that the allocator wants to" " fuse, but the X86 backend currently can't"), cl::Hidden); + cl::opt<bool> + ReMatPICStubLoad("remat-pic-stub-load", + cl::desc("Re-materialize load from stub in PIC mode"), + cl::init(false), cl::Hidden); } X86InstrInfo::X86InstrInfo(X86TargetMachine &tm) @@ -782,6 +786,8 @@ bool X86InstrInfo::isReallyTriviallyReMaterializable(MachineInstr *MI) const { if (BaseReg == 0) return true; // Allow re-materialization of PIC load. + if (!ReMatPICStubLoad && MI->getOperand(4).isGlobal()) + return false; MachineRegisterInfo &MRI = MI->getParent()->getParent()->getRegInfo(); bool isPICBase = false; for (MachineRegisterInfo::def_iterator I = MRI.def_begin(BaseReg), |