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| author | Evan Cheng <evan.cheng@apple.com> | 2008-09-26 19:48:35 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-09-26 19:48:35 +0000 |
| commit | d77cbe8947f115212f157d5d1e3d93ca6c4c8016 (patch) | |
| tree | 0c70d394fa053f3c46a156531d2017308c2f9d73 /llvm/lib/Target/X86/X86ISelLowering.cpp | |
| parent | 9e3f7dbedabd337cdb18446eb4897a0fb404211f (diff) | |
| download | bcm5719-llvm-d77cbe8947f115212f157d5d1e3d93ca6c4c8016.tar.gz bcm5719-llvm-d77cbe8947f115212f157d5d1e3d93ca6c4c8016.zip | |
Fix @llvm.frameaddress codegen. FP elimination optimization should be disabled when frame address is desired. Also add support for depth > 0.
llvm-svn: 56683
Diffstat (limited to 'llvm/lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 267be34f4a3..d8d5db92a03 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -5645,13 +5645,13 @@ SDValue X86TargetLowering::LowerRETURNADDR(SDValue Op, SelectionDAG &DAG) { } SDValue X86TargetLowering::LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) { - // Depths > 0 not supported yet! - if (cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue() > 0) - return SDValue(); - - SDValue RetAddrFI = getReturnAddressFrameIndex(DAG); - return DAG.getNode(ISD::SUB, getPointerTy(), RetAddrFI, - DAG.getIntPtrConstant(TD->getPointerSize())); + unsigned Depth = cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue(); + unsigned FrameReg = Subtarget->is64Bit() ? X86::RBP : X86::EBP; + SDValue FrameAddr = DAG.getRegister(FrameReg, getPointerTy()); + while (Depth--) + FrameAddr = DAG.getLoad(getPointerTy(), DAG.getEntryNode(), FrameAddr, + NULL, 0); + return FrameAddr; } SDValue X86TargetLowering::LowerFRAME_TO_ARGS_OFFSET(SDValue Op, |
