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* [Bug tree-optimization/66372] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu [not found] <bug-66372-4@http.gcc.gnu.org/bugzilla/> @ 2015-06-02 8:53 ` rguenth at gcc dot gnu.org 2015-07-10 13:50 ` mpolacek at gcc dot gnu.org ` (4 subsequent siblings) 5 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu.org @ 2015-06-02 8:53 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66372 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2015-06-02 Known to work| |5.1.0 Target Milestone|--- |6.0 Summary|ICE on valid code at -O3 on |[6 Regression] ICE on valid |x86_64-linux-gnu |code at -O3 on | |x86_64-linux-gnu Ever confirmed|0 |1 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- Confirmed. (gdb) p path->last ()->e->src->loop_father Cannot access memory at address 0xa5a5a5a5a5a5a5bd looks like e->src was freed. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/66372] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu [not found] <bug-66372-4@http.gcc.gnu.org/bugzilla/> 2015-06-02 8:53 ` [Bug tree-optimization/66372] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu rguenth at gcc dot gnu.org @ 2015-07-10 13:50 ` mpolacek at gcc dot gnu.org 2015-07-20 14:33 ` jgreenhalgh at gcc dot gnu.org ` (3 subsequent siblings) 5 siblings, 0 replies; 6+ messages in thread From: mpolacek at gcc dot gnu.org @ 2015-07-10 13:50 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66372 Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mpolacek at gcc dot gnu.org --- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> --- Started with r223448. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/66372] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu [not found] <bug-66372-4@http.gcc.gnu.org/bugzilla/> 2015-06-02 8:53 ` [Bug tree-optimization/66372] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu rguenth at gcc dot gnu.org 2015-07-10 13:50 ` mpolacek at gcc dot gnu.org @ 2015-07-20 14:33 ` jgreenhalgh at gcc dot gnu.org 2015-07-20 15:02 ` jgreenhalgh at gcc dot gnu.org ` (2 subsequent siblings) 5 siblings, 0 replies; 6+ messages in thread From: jgreenhalgh at gcc dot gnu.org @ 2015-07-20 14:33 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66372 James Greenhalgh <jgreenhalgh at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jgreenhalgh at gcc dot gnu.org --- Comment #3 from James Greenhalgh <jgreenhalgh at gcc dot gnu.org> --- Possibly related to this report on gcc-patches: https://gcc.gnu.org/ml/gcc-patches/2015-07/msg01649.html ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/66372] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu [not found] <bug-66372-4@http.gcc.gnu.org/bugzilla/> ` (2 preceding siblings ...) 2015-07-20 14:33 ` jgreenhalgh at gcc dot gnu.org @ 2015-07-20 15:02 ` jgreenhalgh at gcc dot gnu.org 2015-07-21 16:35 ` mpolacek at gcc dot gnu.org 2015-08-25 13:46 ` mpolacek at gcc dot gnu.org 5 siblings, 0 replies; 6+ messages in thread From: jgreenhalgh at gcc dot gnu.org @ 2015-07-20 15:02 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66372 --- Comment #4 from James Greenhalgh <jgreenhalgh at gcc dot gnu.org> --- I think this is the same issue as I spotted in the larger testcase. Looking at the cancelled jumps: trunk/foo.c.096t.dom1: Cancelling jump thread: (6, 8) incoming edge; (8, 13) joiner; (13, 9) normal; trunk/foo.c.096t.dom1: Cancelling jump thread: (7, 9) incoming edge; (9, 13) joiner; (13, 10) normal; With r223448 reverted: reverted/small.c.096t.dom1: Cancelling jump thread: (6, 8) incoming edge; (8, 13) joiner; (13, 9) normal; reverted/small.c.096t.dom1: Cancelling jump thread: (7, 9) incoming edge; (9, 13) joiner; (13, 10) normal; reverted/small.c.096t.dom1: Cancelling jump thread: (2, 3) incoming edge; (3, 4) joiner; (4, 5) normal; If we fail to cancel 2 --> 3 to 5, we will probably end up in trouble given the other blocks we've threaded through: trunk/small.c.096t.dom1: Threaded jump 6 --> 10 to 16 trunk/small.c.096t.dom1: Threaded jump 7 --> 10 to 16 trunk/small.c.096t.dom1: Threaded jump 15 --> 13 to 17 trunk/small.c.096t.dom1: Threaded jump 8 --> 13 to 17 trunk/small.c.096t.dom1: Threaded jump 3 --> 4 to 15 trunk/small.c.096t.dom1: Threaded jump 14 --> 13 to 16 trunk/small.c.096t.dom1: Threaded jump 9 --> 13 to 16 And taking a look at the path we're processing just before the ICE, it does start (2, 3). ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/66372] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu [not found] <bug-66372-4@http.gcc.gnu.org/bugzilla/> ` (3 preceding siblings ...) 2015-07-20 15:02 ` jgreenhalgh at gcc dot gnu.org @ 2015-07-21 16:35 ` mpolacek at gcc dot gnu.org 2015-08-25 13:46 ` mpolacek at gcc dot gnu.org 5 siblings, 0 replies; 6+ messages in thread From: mpolacek at gcc dot gnu.org @ 2015-07-21 16:35 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66372 Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |antoine.balestrat at gmail dot com --- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> --- *** Bug 66958 has been marked as a duplicate of this bug. *** ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/66372] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu [not found] <bug-66372-4@http.gcc.gnu.org/bugzilla/> ` (4 preceding siblings ...) 2015-07-21 16:35 ` mpolacek at gcc dot gnu.org @ 2015-08-25 13:46 ` mpolacek at gcc dot gnu.org 5 siblings, 0 replies; 6+ messages in thread From: mpolacek at gcc dot gnu.org @ 2015-08-25 13:46 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66372 Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> --- This seems to be fixed now. ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2015-08-25 13:46 UTC | newest]
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[not found] <bug-66372-4@http.gcc.gnu.org/bugzilla/>
2015-06-02 8:53 ` [Bug tree-optimization/66372] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu rguenth at gcc dot gnu.org
2015-07-10 13:50 ` mpolacek at gcc dot gnu.org
2015-07-20 14:33 ` jgreenhalgh at gcc dot gnu.org
2015-07-20 15:02 ` jgreenhalgh at gcc dot gnu.org
2015-07-21 16:35 ` mpolacek at gcc dot gnu.org
2015-08-25 13:46 ` mpolacek at gcc dot gnu.org
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