Temporarily revert "Change the informal convention of DBG_VALUE so that we can express a"

because it breaks some buildbots.

This reverts commit 180816.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180819 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 6 deletions

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index b8959adcde..ee6308c466 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -1115,8 +1115,7 @@ static bool isDbgValueInDefinedReg(const MachineInstr *MI) {
   assert(MI->isDebugValue() && "Invalid DBG_VALUE machine instruction!");
   return MI->getNumOperands() == 3 &&
          MI->getOperand(0).isReg() && MI->getOperand(0).getReg() &&
-         (MI->getOperand(1).isImm() ||
-          (MI->getOperand(1).isReg() && MI->getOperand(1).getReg() == 0U));
+         MI->getOperand(1).isImm() && MI->getOperand(1).getImm() == 0;
 }
 
 // Get .debug_loc entry for the instruction range starting at MI.
@@ -1130,11 +1129,12 @@ static DotDebugLocEntry getDebugLocEntry(AsmPrinter *Asm,
     MachineLocation MLoc = Asm->getDebugValueLocation(MI);
     return DotDebugLocEntry(FLabel, SLabel, MLoc, Var);
   }
-  if (MI->getOperand(0).isReg()) {
+  if (MI->getOperand(0).isReg() && MI->getOperand(1).isImm()) {
     MachineLocation MLoc;
-    // If the second operand is an immediate, this is a
-    // register-indirect address.
-    if (!MI->getOperand(1).isImm())
+    // TODO: Currently an offset of 0 in a DBG_VALUE means
+    // we need to generate a direct register value.
+    // There is no way to specify an indirect value with offset 0.
+    if (MI->getOperand(1).getImm() == 0)
       MLoc.set(MI->getOperand(0).getReg());
     else
       MLoc.set(MI->getOperand(0).getReg(), MI->getOperand(1).getImm());