Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/builtin-bswap-6a.c @ 138:fc828634a951
merge
author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Thu, 08 Nov 2018 14:17:14 +0900 |
parents | 04ced10e8804 |
children |
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/* { dg-do compile { target arm*-*-* alpha*-*-* i?86-*-* powerpc*-*-* rs6000-*-* x86_64-*-* s390*-*-* } } */ /* { dg-require-effective-target stdint_types } */ /* { dg-options "-O2 -fdump-rtl-combine" } */ /* { dg-additional-options "-march=z900" { target s390*-*-* } } */ /* The test is similiar to builtin-bswap-6.c but returns 1/2 instead of 0/1 to prevent GCC from calculating the return value with arithmetic instead of a comparison. This requires the optimization level to be bumped up to -O2 at least for x86_64. */ #include <stdint.h> #define BS(X) __builtin_bswap32(X) int foo1 (uint32_t a) { if (BS (a) == 0xA0000) return 1; return 2; } int foo2 (uint32_t a) { if (BS (a) != 0xA0000) return 1; return 2; } int foo3 (uint32_t a, uint32_t b) { if (BS (a) == BS (b)) return 1; return 2; } int foo4 (uint32_t a, uint32_t b) { if (BS (a) != BS (b)) return 1; return 2; } /* { dg-final { scan-rtl-dump-not "bswapsi" "combine" } } */