Need -O1 or better to have these builtins lowered to

llvm intrinsics in llvm-gcc-4.2.  This is because
get_pointer_alignment bails out: it relies on TER
to compute accurate alignment information.

llvm-svn: 40128

test/CFrontend/2004-02-13-Memset.c

@@ -1,4 +1,5 @@
-// RUN: %llvmgcc -xc %s -c -o - | llvm-dis | grep llvm.memset | wc -l | grep 3
+// RUN: %llvmgcc -xc %s -c -O1 -o - | llvm-dis | grep llvm.memset | \
+// RUN:   wc -l | grep 3
 
 void test(int* X, char *Y) {
   memset(X, 4, 1000);