Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 28 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/scev-cast.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/scev-cast.c
new file mode 100644
index 000000000..ff645fac2
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/scev-cast.c
@@ -0,0 +1,28 @@
+/* A test for various conversions of chrecs.  */
+
+/* { dg-do compile { target i?86-*-* x86_64-*-* } } */
+/* { dg-options "-O2 -fdump-tree-optimized" } */
+
+void blas (signed char xxx);
+void blau (unsigned char xxx);
+
+void tst(void)
+{
+  unsigned i;
+
+  for (i = 0; i < 129; i++) /* This truncation to char has to be preserved.  */
+    blas ((signed char) i);
+  for (i = 0; i < 128; i++) /* This one is not necessary, VRP eliminates it.  */
+    blas ((signed char) i);
+  for (i = 0; i < 127; i++) /* This one is not necessary, IVOPTS eliminates it.  */
+    blas ((signed char) i);
+  for (i = 0; i < 256; i++) /* This one is not necessary, VRP eliminates it.  */
+    blau ((unsigned char) i);
+  for (i = 0; i < 257; i++) /* This one is necessary.  */
+    blau ((unsigned char) i);
+}
+
+/* { dg-final { scan-tree-dump-times "& 255" 1 "optimized" } } */
+/* { dg-final { scan-tree-dump-times "= \\(signed char\\)" 1 "optimized" } } */
+
+/* { dg-final { cleanup-tree-dump "optimized" } } */