diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp index 6c0074e62f2..a9bbf3d1a6e 100644 --- a/lib/Target/X86/X86RegisterInfo.cpp +++ b/lib/Target/X86/X86RegisterInfo.cpp @@ -662,6 +662,17 @@ void X86RegisterInfo::emitFrameMoves(MachineFunction &MF, TargetFrameInfo::StackGrowsUp ? TD->getPointerSize() : -TD->getPointerSize()); + if (hasFP(MF)) { + // Save FP + MachineLocation FPDst(MachineLocation::VirtualFP, 2*stackGrowth); + MachineLocation FPSrc(FramePtr); + Moves.push_back(MachineMove(ReadyLabelId, FPDst, FPSrc)); + } + + MachineLocation FPDst(hasFP(MF) ? FramePtr : StackPtr); + MachineLocation FPSrc(MachineLocation::VirtualFP); + Moves.push_back(MachineMove(ReadyLabelId, FPDst, FPSrc)); + if (StackSize) { // Show update of SP. if (hasFP(MF)) { @@ -676,7 +687,7 @@ void X86RegisterInfo::emitFrameMoves(MachineFunction &MF, Moves.push_back(MachineMove(FrameLabelId, SPDst, SPSrc)); } } else { - //FIXME: Verify & implement for FP + // FIXME: Verify & implement for FP MachineLocation SPDst(StackPtr); MachineLocation SPSrc(StackPtr, stackGrowth); Moves.push_back(MachineMove(FrameLabelId, SPDst, SPSrc)); @@ -704,17 +715,6 @@ void X86RegisterInfo::emitFrameMoves(MachineFunction &MF, MachineLocation CSSrc(Reg); Moves.push_back(MachineMove(FrameLabelId, CSDst, CSSrc)); } - - if (hasFP(MF)) { - // Save FP - MachineLocation FPDst(MachineLocation::VirtualFP, 2*stackGrowth); - MachineLocation FPSrc(FramePtr); - Moves.push_back(MachineMove(ReadyLabelId, FPDst, FPSrc)); - } - - MachineLocation FPDst(hasFP(MF) ? FramePtr : StackPtr); - MachineLocation FPSrc(MachineLocation::VirtualFP); - Moves.push_back(MachineMove(ReadyLabelId, FPDst, FPSrc)); } @@ -822,13 +822,6 @@ void X86RegisterInfo::emitPrologue(MachineFunction &MF) const { NumBytes = StackSize - X86FI->getCalleeSavedFrameSize(); } - unsigned ReadyLabelId = 0; - if (needsFrameMoves) { - // Mark effective beginning of when frame pointer is ready. - ReadyLabelId = MMI->NextLabelID(); - BuildMI(MBB, MBBI, DL, TII.get(X86::DBG_LABEL)).addImm(ReadyLabelId); - } - // Skip the callee-saved push instructions. while (MBBI != MBB.end() && (MBBI->getOpcode() == X86::PUSH32r || @@ -891,8 +884,13 @@ void X86RegisterInfo::emitPrologue(MachineFunction &MF) const { emitSPUpdate(MBB, MBBI, StackPtr, -(int64_t)NumBytes, Is64Bit, TII); } - if (needsFrameMoves) + if (needsFrameMoves) { + unsigned ReadyLabelId = 0; + // Mark effective beginning of when frame pointer is ready. + ReadyLabelId = MMI->NextLabelID(); + BuildMI(MBB, MBBI, DL, TII.get(X86::DBG_LABEL)).addImm(ReadyLabelId); emitFrameMoves(MF, FrameLabelId, ReadyLabelId); + } } void X86RegisterInfo::emitEpilogue(MachineFunction &MF,