Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-30.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 tree-optimization/80933 - redundant bzero/bcopy calls not eliminated { dg-do compile } { dg-options "-O2 -fdump-tree-dse1" } */ void sink (void*); void test_bcopy (const void *s) { char d[33]; /* Bcopy is transformed into memmove and those calls are expanded inline in EVRP, before DSE runs, so this test doesn't actually verify that DSE does its job. */ __builtin_bcopy (s, d, sizeof d); __builtin_bcopy (s, d, sizeof d); sink (d); } void test_bzero (void) { char d[33]; __builtin_bzero (d, sizeof d); __builtin_bzero (d, sizeof d); sink (d); } /* { dg-final { scan-tree-dump-times "builtin_memset" 1 "dse1" } } */ /* { dg-final { scan-tree-dump-not "builtin_(bcopy|bzero|memcpy|memmove)" "dse1" } } */