Author: lattner
Date: Mon Jan 14 17:12:30 2008
New Revision: 45983
URL: http://llvm.org/viewvc/llvm-project?rev=45983&view=rev
Log:
Fix PR1904, which involves merging the (GPL2) patch for PR28045
into llvm-gcc 4.0. llvm-gcc 4.2 already has this fix.
Modified:
llvm-gcc-4.0/trunk/gcc/fold-const.c
Modified: llvm-gcc-4.0/trunk/gcc/fold-const.c
URL:
http://llvm.org/viewvc/llvm-project/llvm-gcc-4.0/trunk/gcc/fold-const.c?rev=45983&r1=45982&r2=45983&view=diff
==============================================================================
--- llvm-gcc-4.0/trunk/gcc/fold-const.c (original)
+++ llvm-gcc-4.0/trunk/gcc/fold-const.c Mon Jan 14 17:12:30 2008
@@ -2377,6 +2377,11 @@
if (TYPE_UNSIGNED (TREE_TYPE (arg0)) != TYPE_UNSIGNED (TREE_TYPE (arg1)))
return 0;
+ /* If both types don't have the same precision, then it is not safe
+ to strip NOPs. */
+ if (TYPE_PRECISION (TREE_TYPE (arg0)) != TYPE_PRECISION (TREE_TYPE (arg1)))
+ return 0;
+
STRIP_NOPS (arg0);
STRIP_NOPS (arg1);
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