/* { dg-do compile } */ /* { dg-options "-O2 -fdump-tree-vrp1-details -fdump-tree-dom2-details -std=gnu89 --param logical-op-non-short-circuit=0" } */ #include "ssa-dom-thread-4.c" /* On targets that define LOGICAL_OP_NON_SHORT_CIRCUIT to 0, we split both "a_elt || b_elt" and "b_elt && kill_elt" into two conditions each, rather than using "(var1 != 0) op (var2 != 0)". Also, as on other targets, we duplicate the header of the inner "while" loop. There are then 4 threading opportunities: 1x "!a_elt && b_elt" in the outer "while" loop -> the start of the inner "while" loop, skipping the known-true "b_elt" in the first condition. 1x "!b_elt" in the first condition -> the outer "while" loop's continuation point, skipping the known-false "b_elt" in the second condition. 2x "kill_elt->indx >= b_elt->indx" in the first "while" loop -> "kill_elt->indx == b_elt->indx" in the second condition, skipping the known-true "b_elt && kill_elt" in the second condition. All the cases are picked up by VRP1 as jump threads. */ /* { dg-final { scan-tree-dump-times "Threaded" 4 "vrp1" } } */