Fix @llvm.frameaddress codegen. FP elimination optimization should be disabled when frame address is desired. Also add support for depth > 0.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56683 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
index 7690250..bfda30e 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
@@ -3483,10 +3483,13 @@
setValue(&I, DAG.getNode(ISD::RETURNADDR, TLI.getPointerTy(),
getValue(I.getOperand(1))));
return 0;
- case Intrinsic::frameaddress:
+ case Intrinsic::frameaddress: {
+ MachineFrameInfo *MFI = CurMBB->getParent()->getFrameInfo();
+ MFI->setFrameAddressIsTaken(true);
setValue(&I, DAG.getNode(ISD::FRAMEADDR, TLI.getPointerTy(),
getValue(I.getOperand(1))));
return 0;
+ }
case Intrinsic::setjmp:
return "_setjmp"+!TLI.usesUnderscoreSetJmp();
break;