re PR tree-optimization/66101 (internal compiler error: in verify_loop_structure, at cfgloop.c:1662)
2015-05-12 Richard Biener <rguenther@suse.de> PR tree-optimization/66101 * tree-ssa-dce.c (remove_dead_stmt): Properly mark loops for fixup if we turn a loop exit edge to a fallthru edge. * gcc.dg/torture/pr66101.c: New testcase. From-SVN: r223065
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2015-05-12 Richard Biener <rguenther@suse.de>
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PR tree-optimization/66101
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* tree-ssa-dce.c (remove_dead_stmt): Properly mark loops for
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fixup if we turn a loop exit edge to a fallthru edge.
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2015-05-12 Richard Biener <rguenther@suse.de>
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PR tree-optimization/37021
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@ -1,3 +1,8 @@
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2015-05-12 Richard Biener <rguenther@suse.de>
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PR tree-optimization/66101
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* gcc.dg/torture/pr66101.c: New testcase.
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2015-05-12 Richard Biener <rguenther@suse.de>
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PR tree-optimization/37021
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@ -0,0 +1,35 @@
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/* { dg-do compile } */
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#include <setjmp.h>
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jmp_buf env;
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int a, c, d, e;
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int
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bar ()
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{
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int b = *(long *) 7 == 5 ? : 0;
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if (a || a > b)
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longjmp (env, 0);
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return 1;
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}
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void
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foo ()
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{
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long f;
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setjmp (env);
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for (; d; c++)
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switch (c)
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case 0:
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{
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f = bar () >> 1;
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if (e)
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goto L;
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if (bar () >> 1)
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goto L;
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}
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L:
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;
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}
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@ -1149,7 +1149,12 @@ remove_dead_stmt (gimple_stmt_iterator *i, basic_block bb)
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if (e != e2)
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{
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cfg_altered = true;
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remove_edge (e2);
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/* If we made a BB unconditionally exit a loop then this
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transform alters the set of BBs in the loop. Schedule
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a fixup. */
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if (loop_exit_edge_p (bb->loop_father, e))
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loops_state_set (LOOPS_NEED_FIXUP);
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remove_edge (e2);
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}
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else
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ei_next (&ei);
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