Mercurial > hg > CbC > CbC_gcc
diff gcc/testsuite/gcc.dg/tree-ssa/vrp119.c @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/testsuite/gcc.dg/tree-ssa/vrp119.c Thu Oct 25 07:37:49 2018 +0900 @@ -0,0 +1,20 @@ +/* PR tree-optimization/86231 */ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-vrp1" } */ +/* { dg-final { scan-tree-dump-not "link_error" "vrp1" } } */ + +int bar (int); +void link_error (void); + +int +foo (int x, int y, int z) +{ + if (x < 4 || x > 8) __builtin_unreachable (); + if (y >= 2 && y <= 6) __builtin_unreachable (); + /* x is [4, 8], y is ~[2, 6], resulting range of e should be ~[2, 3]. */ + int e = (z ? x : y); + bar (bar (bar (bar (bar (bar (bar (bar (bar (bar (bar (bar (e)))))))))))); + if (e == 2 || e == 3) + link_error (); + return e; +}