Replace r102368 with code that's less fragile. This creates DBG_VALUE instructions for function arguments early and insert them after instruction selection is done.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102554 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
index d9495fb..b07d70a 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
@@ -36,6 +36,7 @@
class BitCastInst;
class BranchInst;
class CallInst;
+class DbgValueInst;
class ExtractElementInst;
class ExtractValueInst;
class FCmpInst;
@@ -58,6 +59,7 @@
class MachineBasicBlock;
class MachineInstr;
class MachineRegisterInfo;
+class MDNode;
class PHINode;
class PtrToIntInst;
class ReturnInst;
@@ -495,6 +497,14 @@
const char *implVisitAluOverflow(const CallInst &I, ISD::NodeType Op);
void HandlePHINodesInSuccessorBlocks(const BasicBlock *LLVMBB);
+
+ /// EmitFuncArgumentDbgValue - If the DbgValueInst is a dbg_value of a
+ /// function argument, create the corresponding DBG_VALUE machine instruction
+ /// for it now. At the end of instruction selection, they will be inserted to
+ /// the entry BB.
+ void EmitFuncArgumentDbgValue(const DbgValueInst &DI,
+ const Value *V, MDNode *Variable,
+ uint64_t Offset, SDValue &N);
};
} // end namespace llvm