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| author | Devang Patel <dpatel@apple.com> | 2010-10-01 19:00:44 +0000 |
|---|---|---|
| committer | Devang Patel <dpatel@apple.com> | 2010-10-01 19:00:44 +0000 |
| commit | 27f46cd6397c456df6f6f22a46752e64c0954fca (patch) | |
| tree | b56bb47586a5318acea312743bb7837a798f0601 /lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | |
| parent | bffa1a5cf3de7d46c71fea93835c6e84f33674e3 (diff) | |
Fix code gen crash reported in PR 8235. We still lose debug info for the unused argument here. This is a known limitation recorded debuginfo-tests/trunk/dbg-declare2.ll function 'f6' test case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115323 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index fca9893db8..88a0f7b870 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -3955,6 +3955,9 @@ SelectionDAGBuilder::EmitFuncArgumentDbgValue(const Value *V, MDNode *Variable, const TargetRegisterInfo *TRI = DAG.getTarget().getRegisterInfo(); Reg = TRI->getFrameRegister(MF); Offset = FuncInfo.getByValArgumentFrameIndex(Arg); + // If byval argument ofset is not recorded then ignore this. + if (!Offset) + Reg = 0; } if (N.getNode() && N.getOpcode() == ISD::CopyFromReg) { |