From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; 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. --- gcc/testsuite/gcc.dg/optimize-bswapdi-1.c | 61 +++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/optimize-bswapdi-1.c (limited to 'gcc/testsuite/gcc.dg/optimize-bswapdi-1.c') diff --git a/gcc/testsuite/gcc.dg/optimize-bswapdi-1.c b/gcc/testsuite/gcc.dg/optimize-bswapdi-1.c new file mode 100644 index 000000000..7d557f369 --- /dev/null +++ b/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 +#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" } } */ -- cgit v1.2.3