Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/tree-ssa/reassoc-2.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 compile } */ /* { dg-options "-O2 -fdump-tree-optimized" } */ int f (int a0,int a1,int a2,int a3,int a4) { int b0, b1, b2, b3, b4,e; /* this can be optimized to four additions... */ b4 = a4 + a3 + a2 + a1 + a0; b3 = a3 + a2 + a1 + a0; b2 = a2 + a1 + a0; b1 = a1 + a0; /* This is actually 0 */ e = b4 - b3 + b2 - b1 - a4 - a2; return e; } /* We can't reassociate the expressions due to undefined signed overflow. */ /* { dg-final { scan-tree-dump-times "return 0" 1 "optimized" { xfail *-*-* } } } */