[llvm] r242892 - [GMR] Only look in the associated allocs map for an underlying value if

Chandler Carruth chandlerc at gmail.com
Wed Jul 22 04:43:25 PDT 2015

Author: chandlerc
Date: Wed Jul 22 06:43:24 2015
New Revision: 242892

URL: http://llvm.org/viewvc/llvm-project?rev=242892&view=rev
[GMR] Only look in the associated allocs map for an underlying value if
it wasn't one of the indirect globals (which clearly cannot be an
allocation function call). Also only do a single lookup into this map
instead of two. NFC.


Modified: llvm/trunk/lib/Analysis/IPA/GlobalsModRef.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/IPA/GlobalsModRef.cpp?rev=242892&r1=242891&r2=242892&view=diff
--- llvm/trunk/lib/Analysis/IPA/GlobalsModRef.cpp (original)
+++ llvm/trunk/lib/Analysis/IPA/GlobalsModRef.cpp Wed Jul 22 06:43:24 2015
@@ -599,10 +599,10 @@ AliasResult GlobalsModRef::alias(const M
   // These pointers may also be from an allocation for the indirect global.  If
   // so, also handle them.
-  if (AllocsForIndirectGlobals.count(UV1))
-    GV1 = AllocsForIndirectGlobals[UV1];
-  if (AllocsForIndirectGlobals.count(UV2))
-    GV2 = AllocsForIndirectGlobals[UV2];
+  if (!GV1)
+    GV1 = AllocsForIndirectGlobals.lookup(UV1);
+  if (!GV2)
+    GV2 = AllocsForIndirectGlobals.lookup(UV2);
   // Now that we know whether the two pointers are related to indirect globals,
   // use this to disambiguate the pointers. If the pointers are based on

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