commit 0f9d95254291418a548d1341db540b5d5c11e8f4
author Devang Patel <dpatel@apple.com> Tue Apr 27 20:54:45 2010 +0000
committer Devang Patel <dpatel@apple.com> Tue Apr 27 20:54:45 2010 +0000
tree 7d5732be249652b90ddccce11824d1d60a23de91
parent b3716e3e28fea28196188734c9868f3b14df0ad2

Ignore DBG_VALUE instructions that points to undef values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102463 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 f7b4c09..8cdb94c 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -2081,6 +2081,11 @@
       // FIXME : Lift this restriction.
       if (MInsn->getNumOperands() != 3)
         continue;
+
+      // Ignore Undef values.
+      if (!MInsn->getOperand(0).getReg())
+        continue;
+
       DIVariable DV(
         const_cast<MDNode *>(MInsn->getOperand(MInsn->getNumOperands() - 1)
                                .getMetadata()));