Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/pr54087.c @ 158:494b0b89df80 default tip
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 04ced10e8804 |
children |
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/* PR54087. Verify __atomic_sub (val) uses __atomic_add (-val) if there is no atomic_aub. */ /* { dg-do compile { target { i?86-*-* x86_64-*-* } } } */ /* { dg-require-effective-target sync_int_long } */ /* { dg-final { scan-assembler-times "xadd" 2 } } */ int a; int f1(int p) { return __atomic_sub_fetch(&a, p, __ATOMIC_SEQ_CST) == 0; } int f2(int p) { return __atomic_fetch_sub(&a, p, __ATOMIC_SEQ_CST) - p == 0; }