Fix gcc-4.4/fedora 11 by adding a sentinel value to SimpleValueType.

gcc-4.4 was optimizing away comparisons against SimpleValueType when
it was compared to a value larger than the largest value in the enum.
This patch works around it by adding one extra item to the enum so
that these tests will now be valid.

llvm-svn: 79401

1 files changed, 6 insertions, 1 deletions

diff --git a/llvm/include/llvm/CodeGen/ValueTypes.h b/llvm/include/llvm/CodeGen/ValueTypes.h
index 4cdad67a736..978ea44f9d7 100644
--- a/llvm/include/llvm/CodeGen/ValueTypes.h
+++ b/llvm/include/llvm/CodeGen/ValueTypes.h
@@ -111,7 +111,12 @@ namespace llvm {
       iPTR           = 255,
 
       // LastSimpleValueType - The greatest valid SimpleValueType value.
-      LastSimpleValueType = 255
+      LastSimpleValueType = 255,
+
+      // FirstExtendedValueType - This sentinel is needed so that gcc 4.4 won't
+      // optimize away checks of a SimpleValueType compared to
+      // LastSimpleValueType+1.
+      FirstExtendedValueType = 256
     };
 
     SimpleValueType SimpleTy;