commit c5bd3e01df02b0101f69749208c17d87e9a2e610
author Duncan P. N. Exon Smith <dexonsmith@apple.com> Fri Apr 03 16:23:04 2015 +0000
committer Duncan P. N. Exon Smith <dexonsmith@apple.com> Fri Apr 03 16:23:04 2015 +0000
tree 00a2323d6786d4312d1108e1ae8ec0de172589b8
parent efece52160095fb4837c51e304a23c22af860107

CodeGen: Fix MachineInstr::print() for DBG_VALUE

Grab the `MDLocalVariable` from the second-to-last argument; the last
argument is an `MDExpression`, and mixing them up will crash.

llvm-svn: 234019

llvm/lib/CodeGen/MachineInstr.cpp

diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp
index c2accbd..f1c0d8e 100644
--- a/llvm/lib/CodeGen/MachineInstr.cpp
+++ b/llvm/lib/CodeGen/MachineInstr.cpp
@@ -1711,9 +1711,9 @@
   }
 
   // Print debug location information.
-  if (isDebugValue() && getOperand(e - 1).isMetadata()) {
+  if (isDebugValue() && getOperand(e - 2).isMetadata()) {
     if (!HaveSemi) OS << ";";
-    DIVariable DV(getOperand(e - 1).getMetadata());
+    DIVariable DV(getOperand(e - 2).getMetadata());
     OS << " line no:" <<  DV.getLineNumber();
     if (auto *InlinedAt = DV.getInlinedAt()) {
       DebugLoc InlinedAtDL(InlinedAt);