1 /* { dg-do compile } */ 2 /* { dg-options "-O2 -fdump-tree-vrp1-details -fdump-tree-dom2-details -std=gnu89 --param logical-op-non-short-circuit=0" } */ 3 4 #include "ssa-dom-thread-4.c" 5 6 /* On targets that define LOGICAL_OP_NON_SHORT_CIRCUIT to 0, we split both 7 "a_elt || b_elt" and "b_elt && kill_elt" into two conditions each, 8 rather than using "(var1 != 0) op (var2 != 0)". Also, as on other targets, 9 we duplicate the header of the inner "while" loop. There are then 10 4 threading opportunities: 11 12 1x "!a_elt && b_elt" in the outer "while" loop 13 -> the start of the inner "while" loop, 14 skipping the known-true "b_elt" in the first condition. 15 1x "!b_elt" in the first condition 16 -> the outer "while" loop's continuation point, 17 skipping the known-false "b_elt" in the second condition. 18 2x "kill_elt->indx >= b_elt->indx" in the first "while" loop 19 -> "kill_elt->indx == b_elt->indx" in the second condition, 20 skipping the known-true "b_elt && kill_elt" in the second 21 condition. 22 23 All the cases are picked up by VRP1 as jump threads. */ 24 /* { dg-final { scan-tree-dump-times "Threaded" 4 "vrp1" } } */ 25