Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 61 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/optimize-bswapdi-1.c b/gcc-4.9/gcc/testsuite/gcc.dg/optimize-bswapdi-1.c
new file mode 100644
index 000000000..7d557f369
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/optimize-bswapdi-1.c
@@ -0,0 +1,61 @@
+/* { dg-do compile { target arm*-*-* alpha*-*-* ia64*-*-* x86_64-*-* s390x-*-* powerpc*-*-* rs6000-*-* } } */
+/* { dg-require-effective-target stdint_types } */
+/* { dg-require-effective-target lp64 } */
+/* { dg-options "-O2 -fdump-tree-bswap" } */
+
+#include <stdint.h>
+#define __const_swab64(x) ((uint64_t)(			                        \
+	(((uint64_t)(x) & (uint64_t)0x00000000000000ffULL) << 56) |             \
+	(((uint64_t)(x) & (uint64_t)0x000000000000ff00ULL) << 40) |		\
+	(((uint64_t)(x) & (uint64_t)0x0000000000ff0000ULL) << 24) |		\
+	(((uint64_t)(x) & (uint64_t)0x00000000ff000000ULL) <<  8) |		\
+	(((uint64_t)(x) & (uint64_t)0x000000ff00000000ULL) >>  8) |		\
+	(((uint64_t)(x) & (uint64_t)0x0000ff0000000000ULL) >> 24) |		\
+	(((uint64_t)(x) & (uint64_t)0x00ff000000000000ULL) >> 40) |		\
+	(((uint64_t)(x) & (uint64_t)0xff00000000000000ULL) >> 56)))
+
+
+/* This byte swap implementation is used by the Linux kernel and the
+   GNU C library.  */
+
+uint64_t
+swap64 (uint64_t in)
+{
+  return __const_swab64 (in);
+}
+
+/* This variant is currently used by libgcc.  The difference is that
+   the bswap source and destination have a signed integer type which
+   requires a slightly higher search depth in order to dive through
+   the cast as well.  */
+
+typedef int DItype __attribute__ ((mode (DI)));
+DItype
+swap64_b (DItype u)
+{
+  return ((((u) & 0xff00000000000000ull) >> 56)
+	  | (((u) & 0x00ff000000000000ull) >> 40)
+	  | (((u) & 0x0000ff0000000000ull) >> 24)
+	  | (((u) & 0x000000ff00000000ull) >>  8)
+	  | (((u) & 0x00000000ff000000ull) <<  8)
+	  | (((u) & 0x0000000000ff0000ull) << 24)
+	  | (((u) & 0x000000000000ff00ull) << 40)
+	  | (((u) & 0x00000000000000ffull) << 56));
+}
+
+/* The OpenSSL variant.  */
+
+uint64_t
+swap64_c (uint64_t x)
+{
+  uint32_t a = x >> 32;
+  uint32_t b = (uint32_t) x;
+  return ((uint64_t) ((((((b)) >> (8)) | (((b)) << (32 - (8)))) & 0xff00ff00L)
+		      | (((((b)) << (8)) | (((b)) >> (32 - (8)))) & 0x00ff00ffL)) << 32)
+          | (uint64_t) ((((((a)) >> (8)) | (((a)) << (32 - (8)))) & 0xff00ff00L)
+			| (((((a)) << (8)) | (((a)) >> (32 - (8)))) & 0x00ff00ffL));
+}
+
+
+/* { dg-final { scan-tree-dump-times "64 bit bswap implementation found at" 3 "bswap" } } */
+/* { dg-final { cleanup-tree-dump "bswap" } } */