diff options
| author | Bill Wendling <isanbard@gmail.com> | 2012-05-01 22:50:45 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2012-05-01 22:50:45 +0000 |
| commit | 95dd4420419a6daae6304ed490a50537094ed488 (patch) | |
| tree | 6708c49e7890e72dd4af36deaec6f57372f51ba6 | |
| parent | 902337092fef14ce2519b4c93c37d72bf66ce768 (diff) | |
Strip the pointer casts off of allocas so that the selection DAG can find them.
PR10799
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155954 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 2 | ||||
| -rw-r--r-- | test/CodeGen/X86/GC/cg-O0.ll | 17 |
2 files changed, 18 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index 94cb95804f..f1e879be95 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -5050,7 +5050,7 @@ SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I, unsigned Intrinsic) { } case Intrinsic::gcroot: if (GFI) { - const Value *Alloca = I.getArgOperand(0); + const Value *Alloca = I.getArgOperand(0)->stripPointerCasts(); const Constant *TypeMap = cast<Constant>(I.getArgOperand(1)); FrameIndexSDNode *FI = cast<FrameIndexSDNode>(getValue(Alloca).getNode()); diff --git a/test/CodeGen/X86/GC/cg-O0.ll b/test/CodeGen/X86/GC/cg-O0.ll new file mode 100644 index 0000000000..b4929425e9 --- /dev/null +++ b/test/CodeGen/X86/GC/cg-O0.ll @@ -0,0 +1,17 @@ +; RUN: llc < %s -O0 + +define i32 @main() { +entry: + call void @f() + ret i32 0 +} + +define void @f() gc "ocaml" { +entry: + %ptr.stackref = alloca i8* + %gcroot = bitcast i8** %ptr.stackref to i8** + call void @llvm.gcroot(i8** %gcroot, i8* null) + ret void +} + +declare void @llvm.gcroot(i8**, i8*) nounwind |