Directly point debug info to the stack slot of the arugment, instead of trying to keep track of vreg in which it the arugment is copied. The LiveDebugVariable can keep track of variable's ranges.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139330 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/FastISel.cpp b/lib/CodeGen/SelectionDAG/FastISel.cpp
index 226edc6..fbd0c62 100644
--- a/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -531,13 +531,10 @@
unsigned Reg = 0;
unsigned Offset = 0;
if (const Argument *Arg = dyn_cast<Argument>(Address)) {
- if (Arg->hasByValAttr()) {
- // Byval arguments' frame index is recorded during argument lowering.
- // Use this info directly.
- Offset = FuncInfo.getByValArgumentFrameIndex(Arg);
- if (Offset)
- Reg = TRI.getFrameRegister(*FuncInfo.MF);
- }
+ // Some arguments' frame index is recorded during argument lowering.
+ Offset = FuncInfo.getArgumentFrameIndex(Arg);
+ if (Offset)
+ Reg = TRI.getFrameRegister(*FuncInfo.MF);
}
if (!Reg)
Reg = getRegForValue(Address);