Revert r124611 - "Keep track of incoming argument's location while emitting LiveIns."
In other words, do not keep track of argument's location. The debugger (gdb) is not prepared to see line table entries for arguments. For the debugger, "second" line table entry marks beginning of function body.
This requires some coordination with debugger to get this working.
- The debugger needs to be aware of prolog_end attribute attached with line table entries.
- The compiler needs to accurately mark prolog_end in line table entries (at -O0 and at -O1+)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126155 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index 1835ec0..3623174 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -2236,7 +2236,7 @@
RC = ARM::GPRRegisterClass;
// Transform the arguments stored in physical registers into virtual ones.
- unsigned Reg = MF.addLiveIn(VA.getLocReg(), RC, dl);
+ unsigned Reg = MF.addLiveIn(VA.getLocReg(), RC);
SDValue ArgValue = DAG.getCopyFromReg(Root, dl, Reg, MVT::i32);
SDValue ArgValue2;
@@ -2250,7 +2250,7 @@
MachinePointerInfo::getFixedStack(FI),
false, false, 0);
} else {
- Reg = MF.addLiveIn(NextVA.getLocReg(), RC, dl);
+ Reg = MF.addLiveIn(NextVA.getLocReg(), RC);
ArgValue2 = DAG.getCopyFromReg(Root, dl, Reg, MVT::i32);
}
@@ -2331,7 +2331,7 @@
llvm_unreachable("RegVT not supported by FORMAL_ARGUMENTS Lowering");
// Transform the arguments in physical registers into virtual ones.
- unsigned Reg = MF.addLiveIn(VA.getLocReg(), RC, dl);
+ unsigned Reg = MF.addLiveIn(VA.getLocReg(), RC);
ArgValue = DAG.getCopyFromReg(Chain, dl, Reg, RegVT);
}
@@ -2408,7 +2408,7 @@
else
RC = ARM::GPRRegisterClass;
- unsigned VReg = MF.addLiveIn(GPRArgRegs[NumGPRs], RC, dl);
+ unsigned VReg = MF.addLiveIn(GPRArgRegs[NumGPRs], RC);
SDValue Val = DAG.getCopyFromReg(Chain, dl, VReg, MVT::i32);
SDValue Store =
DAG.getStore(Val.getValue(1), dl, Val, FIN,
@@ -2897,7 +2897,7 @@
}
// Return LR, which contains the return address. Mark it an implicit live-in.
- unsigned Reg = MF.addLiveIn(ARM::LR, getRegClassFor(MVT::i32), dl);
+ unsigned Reg = MF.addLiveIn(ARM::LR, getRegClassFor(MVT::i32));
return DAG.getCopyFromReg(DAG.getEntryNode(), dl, Reg, VT);
}