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Avoid duplicating logic on frame register selecting when lowering frameaddr

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180912 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael Liao 2013-05-02 08:21:56 +00:00
parent 149b2a8b92
commit b9cca13063
1 changed files with 3 additions and 1 deletions
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4
lib/Target/X86/X86ISelLowering.cpp
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@ -11030,7 +11030,9 @@ SDValue X86TargetLowering::LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const {
EVT VT = Op.getValueType(); EVT VT = Op.getValueType();
DebugLoc dl = Op.getDebugLoc(); // FIXME probably not meaningful DebugLoc dl = Op.getDebugLoc(); // FIXME probably not meaningful
unsigned Depth = cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue(); unsigned Depth = cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue();
unsigned FrameReg = Subtarget->is64Bit() ? X86::RBP : X86::EBP; unsigned FrameReg = RegInfo->getFrameRegister(DAG.getMachineFunction());
assert(((FrameReg == X86::RBP && VT == MVT::i64) ||
(FrameReg == X86::EBP && VT == MVT::i32)) && "Invalid Frame Register!");
SDValue FrameAddr = DAG.getCopyFromReg(DAG.getEntryNode(), dl, FrameReg, VT); SDValue FrameAddr = DAG.getCopyFromReg(DAG.getEntryNode(), dl, FrameReg, VT);
while (Depth--) while (Depth--)
FrameAddr = DAG.getLoad(VT, dl, DAG.getEntryNode(), FrameAddr, FrameAddr = DAG.getLoad(VT, dl, DAG.getEntryNode(), FrameAddr,