diff options
| -rw-r--r-- | lib/Target/X86/X86RegisterInfo.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp index 4bdfd8c101..4f4a33db74 100644 --- a/lib/Target/X86/X86RegisterInfo.cpp +++ b/lib/Target/X86/X86RegisterInfo.cpp @@ -745,6 +745,11 @@ void X86RegisterInfo::emitPrologue(MachineFunction &MF) const { BuildMI(MBB, MBBI, TII.get(Is64Bit ? X86::MOV64rr : X86::MOV32rr), FramePtr) .addReg(StackPtr); + // Mark the FramePtr as live-in in every block except the entry. + for (MachineFunction::iterator I = next(MF.begin()), E = MF.end(); + I != E; ++I) + I->addLiveIn(FramePtr); + // Realign stack if (needsStackRealignment(MF)) BuildMI(MBB, MBBI, |