Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/tree-ssa/pr21294.c @ 158:494b0b89df80 default tip
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 04ced10e8804 |
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/* PR tree-optimization/21294 VRP did not notice that an address of the form &p->i is nonnull when p is known to be nonnull. In this testcase, noticing that allows us to eliminate the second "if" statement. */ /* { dg-do compile } */ /* { dg-options "-O2 -fno-tree-dominator-opts -fdisable-tree-evrp -fdump-tree-vrp1-details" } */ struct f { int i; }; int foo (struct f *p) { if (p != 0) if (&p->i != 0) return 123; return 0; } /* { dg-final { scan-tree-dump-times "Folding predicate" 1 "vrp1"} } */