commit 0b48eade42022c929fcf0f2afcffdf849c5bd05a
author Devang Patel <dpatel@apple.com> Tue Aug 31 22:22:42 2010 +0000
committer Devang Patel <dpatel@apple.com> Tue Aug 31 22:22:42 2010 +0000
tree 7e97c59cd08cf2ecd2b98422b5e1bba5f432d319
parent 5023ef281c719914681e4f2b12d4d120923d8127

Reapply r112623. Included additional check for unused byval argument.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112659 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/AsmPrinter/DwarfDebug.cpp

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index eaa12d4..eeae8a3 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -1629,9 +1629,16 @@
     bool updated = false;
     // FIXME : Handle getNumOperands != 3
     if (DVInsn->getNumOperands() == 3) {
-      if (DVInsn->getOperand(0).isReg())
-        updated =
-          addRegisterAddress(VariableDie, DVLabel, DVInsn->getOperand(0));
+      if (DVInsn->getOperand(0).isReg()) {
+        const MachineOperand RegOp = DVInsn->getOperand(0);
+        const TargetRegisterInfo *TRI = Asm->TM.getRegisterInfo();
+        if (DVInsn->getOperand(1).isImm() &&
+            TRI->getFrameRegister(*Asm->MF) == RegOp.getReg()) {
+          addVariableAddress(DV, VariableDie, DVInsn->getOperand(1).getImm());
+          updated = true;
+        } else
+          updated = addRegisterAddress(VariableDie, DVLabel, RegOp);
+      }
       else if (DVInsn->getOperand(0).isImm())
         updated = addConstantValue(VariableDie, DVLabel, DVInsn->getOperand(0));
       else if (DVInsn->getOperand(0).isFPImm())