obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 26 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/scev-cast.c b/gcc/testsuite/gcc.dg/tree-ssa/scev-cast.c
new file mode 100644
index 000000000..2cf245460
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/scev-cast.c
@@ -0,0 +1,26 @@
+/* A test for various conversions of chrecs.  */
+
+/* { dg-do compile { target i?86-*-* x86_64-*-* } } */
+/* { dg-options "-O2 -fdump-tree-optimized" } */
+
+void blas (char xxx);
+void blau (unsigned char xxx);
+
+void tst(void)
+{
+  unsigned i;
+
+  for (i = 0; i < 128; i++) /* This cast to char has to be preserved.  */
+    blas ((char) i);
+  for (i = 0; i < 127; i++) /* And this one does not.  */
+    blas ((char) i);
+  for (i = 0; i < 255; i++) /* This cast is not necessary.  */
+    blau ((unsigned char) i);
+  for (i = 0; i < 256; i++)
+    blau ((unsigned char) i); /* This one is necessary.  */
+}
+
+/* { dg-final { scan-tree-dump-times "= \\(unsigned char\\)" 1 "optimized" } } */
+/* { dg-final { scan-tree-dump-times "= \\(char\\)" 1 "optimized" } } */
+
+/* { dg-final { cleanup-tree-dump "optimized" } } */