From: Jim Laskey <jlaskey@mac.com>
Date: Sat, 4 Nov 2006 10:48:07 +0000 (+0000)
Subject: Live local variables are being dropped because the begin or end labels marking
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=5cd496e72773985590a7dfc003279459951c81d7;p=oota-llvm.git

Live local variables are being dropped because the begin or end labels marking
their scope are being deleted.  Workaround is to widen scope to full function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31454 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/DwarfWriter.cpp b/lib/CodeGen/DwarfWriter.cpp
index 40518eb2093..1c33cd85f1e 100644
--- a/lib/CodeGen/DwarfWriter.cpp
+++ b/lib/CodeGen/DwarfWriter.cpp
@@ -1862,9 +1862,10 @@ private:
       unsigned StartID = Scope->getStartLabelID();
       unsigned EndID = Scope->getEndLabelID();
       
-      // Throw out scope if block is discarded.
-      if (StartID && !DebugInfo->isLabelValid(StartID)) continue;
-      if (EndID && !DebugInfo->isLabelValid(EndID)) continue;
+      // Widen scope if label is discarded.
+      // FIXME - really need to find a GOOD label if a block is dead.
+      if (StartID && !DebugInfo->isLabelValid(StartID)) StartID = 0;
+      if (EndID && !DebugInfo->isLabelValid(EndID)) EndID = 0;
       
       DIE *ScopeDie = new DIE(DW_TAG_lexical_block);