Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/ext-elim-1.c @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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/* PR rtl-optimization/51924 */ /* Testcase by Zdenek Sojka <zsojka@seznam.cz> */ /* { dg-do run } */ /* { dg-options "-O -free -fno-rename-registers -ftree-vectorize -funroll-loops" } */ typedef __UINT64_TYPE__ uint64_t; uint64_t __attribute__ ((noinline, noclone)) bn_sub_words (uint64_t * r, const uint64_t * a, const uint64_t * b, int n) { uint64_t t1, t2; unsigned c = 0; while (n) { t1 = a[0]; t2 = b[0]; r[0] = (t1 - t2 - c); if (t1 != t2) c = (t1 < t2); a++; b++; r++; n--; } return (c); } int main (void) { uint64_t r[2]; uint64_t a[2] = { -1, -1 }; uint64_t b[2] = { 0, 0 }; if (bn_sub_words (r, a, b, 2) != 0) __builtin_abort (); return 0; }