Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/tree-ssa/predcom-5.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 } */ /* { dg-options "-O2 -funroll-loops --param max-unroll-times=8 -fpredictive-commoning -fdump-tree-pcom-details" } */ /* Test for predictive commoning of expressions, with reassociation. */ void abort (void); unsigned a[1000], b[1000], c[1000], d[1000]; int main(void) { unsigned i; for (i = 0; i < 1000; i++) a[i] = b[i] = d[i] = i; for (i = 1; i < 998; i++) c[i] = d[i + 1] * a[i + 2] * b[i + 1] - b[i - 1] * a[i] * d[i - 1]; for (i = 1; i < 998; i++) if (c[i] != (i+1)*(i+2)*(i+1) - (i - 1) * i * (i - 1)) abort (); return 0; } /* { dg-final { scan-tree-dump-times "Combination" 2 "pcom"} } */ /* { dg-final { scan-tree-dump-times "Unrolling 3 times." 1 "pcom"} } */