Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/tree-ssa/vrp02.c @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | |
children | 84e7813d76e9 |
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/* { dg-do compile } */ /* { dg-options "-O2 -fdump-tree-vrp1 -fdelete-null-pointer-checks" } */ struct A { int a; int b; }; int foo (struct A *p, struct A *q) { int x = p->a; if (p == q) return q->a; /* We should fold this to 'if (1)' but the assertion for 'p == q' was overwriting the assertion 'p != 0' from the first dereference of 'p'. */ if (p) return x + p->b; } /* Target disabling -fdelete-null-pointer-checks should not fold check */ /* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 1 "vrp1" { target { ! keeps_null_pointer_checks } } } } */ /* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 0 "vrp1" { target { keeps_null_pointer_checks } } } } */