Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/tree-ssa/slsr-31.c @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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/* Verify straight-line strength reduction for add candidates in which the stride is unknown and increments appear that differ only in sign. Verify the increments are shared. */ /* { dg-do compile } */ /* { dg-options "-O3 -fdump-tree-optimized" } */ int f (int s, int c) { int a1, a2, a3, a4, x1, x2, x3, x4, x; a1 = 2 * s; x1 = c + a1; a2 = 4 * s; /* incr = +2 */ x2 = c + a2; a3 = 7 * s; x3 = c + a3; a4 = 5 * s; /* incr = -2 */ x4 = c + a4; x = x1 + x2 + x3 + x4; return x; } /* { dg-final { scan-tree-dump-times " \\* 2" 1 "optimized" } } */ /* { dg-final { scan-tree-dump-times " \\* -2" 0 "optimized" } } */