Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/combine-subregs.c @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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/* { dg-do run { target { stdint_types } } } */ /* { dg-options "-O2" } */ #include <stdint.h> #include <stdlib.h> void __attribute__ ((noinline)) foo (uint64_t state, uint32_t last) { if (state == last) abort (); } /* This function may do a bad comparision by trying to use SUBREGS during the compare on machines where comparing two registers always compares the entire register regardless of mode. */ int __attribute__ ((noinline)) compare (uint64_t state, uint32_t *last, uint8_t buf) { if (*last == ((state | buf) & 0xFFFFFFFF)) { foo (state, *last); return 0; } return 1; } int main(int argc, char **argv) { uint64_t state = 0xF00000100U; uint32_t last = 0x101U; int ret = compare(state, &last, 0x01); if (ret != 0) abort (); exit (0); }