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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.dg/] [tree-ssa/] [predcom-5.c] - Rev 298
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/* { dg-do compile } */ /* { dg-do run } */ /* { dg-options "-O2 -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"} } */ /* { dg-final { cleanup-tree-dump "pcom" } } */