because on alpha:

#   define errno (*__errno_location ())

*shakes head

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22383 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Analysis/BasicAliasAnalysis.cpp b/lib/Analysis/BasicAliasAnalysis.cpp
index 1110a017de9862236c4b1b2f3d1dfd318d4cbb1c..3c0f0f626f0a7064d9b7de83f867d8dd1cc58dc3 100644 (file)
--- a/lib/Analysis/BasicAliasAnalysis.cpp
+++ b/lib/Analysis/BasicAliasAnalysis.cpp
@@ -743,6 +743,7 @@ static const char *DoesntAccessMemoryTable[] = {
   // glibc functions:
   "__fpclassify", "__fpclassifyf", "__fpclassifyl",
   "__signbit", "__signbitf", "__signbitl",
+  "__errno_location",
 };
 
 static const unsigned DAMTableSize =