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* [Bug middle-end/58402] New: [4.9 regression] FAIL: gcc.dg/tree-ssa/phi-opt-1.c scan-tree-dump-times optimized "if" 0
@ 2013-09-12 9:46 schwab@linux-m68k.org
2013-09-12 9:47 ` [Bug middle-end/58402] " schwab@linux-m68k.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: schwab@linux-m68k.org @ 2013-09-12 9:46 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58402
Bug ID: 58402
Summary: [4.9 regression] FAIL: gcc.dg/tree-ssa/phi-opt-1.c
scan-tree-dump-times optimized "if" 0
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: schwab@linux-m68k.org
CC: rguenther at suse dot de
Blocks: 58377
Target: m68k-*-*
This fails since r202496:
$ rm -f phi-opt-1.c.* && gcc/xgcc -Bgcc/
../gcc/testsuite/gcc.dg/tree-ssa/phi-opt-1.c -fno-diagnostics-show-caret
-fdiagnostics-color=never -O1 -fdump-tree-optimized -S -o phi-opt-1.s && grep
if phi-opt-1.c.*.optimized
if (c_2(D) == 0)
if (a_3(D) == 0)
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/58402] [4.9 regression] FAIL: gcc.dg/tree-ssa/phi-opt-1.c scan-tree-dump-times optimized "if" 0
2013-09-12 9:46 [Bug middle-end/58402] New: [4.9 regression] FAIL: gcc.dg/tree-ssa/phi-opt-1.c scan-tree-dump-times optimized "if" 0 schwab@linux-m68k.org
@ 2013-09-12 9:47 ` schwab@linux-m68k.org
2013-09-12 9:54 ` rguenth at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: schwab@linux-m68k.org @ 2013-09-12 9:47 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58402
Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.9.0
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/58402] [4.9 regression] FAIL: gcc.dg/tree-ssa/phi-opt-1.c scan-tree-dump-times optimized "if" 0
2013-09-12 9:46 [Bug middle-end/58402] New: [4.9 regression] FAIL: gcc.dg/tree-ssa/phi-opt-1.c scan-tree-dump-times optimized "if" 0 schwab@linux-m68k.org
2013-09-12 9:47 ` [Bug middle-end/58402] " schwab@linux-m68k.org
@ 2013-09-12 9:54 ` rguenth at gcc dot gnu.org
2013-09-12 10:14 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-09-12 9:54 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58402
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2013-09-12
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Hm, and I thought I tested that it wasn't caused by my patch by reverting and
re-checking .... somehow I must have messed up.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/58402] [4.9 regression] FAIL: gcc.dg/tree-ssa/phi-opt-1.c scan-tree-dump-times optimized "if" 0
2013-09-12 9:46 [Bug middle-end/58402] New: [4.9 regression] FAIL: gcc.dg/tree-ssa/phi-opt-1.c scan-tree-dump-times optimized "if" 0 schwab@linux-m68k.org
2013-09-12 9:47 ` [Bug middle-end/58402] " schwab@linux-m68k.org
2013-09-12 9:54 ` rguenth at gcc dot gnu.org
@ 2013-09-12 10:14 ` rguenth at gcc dot gnu.org
2013-09-12 13:19 ` rguenth at gcc dot gnu.org
2013-09-12 13:21 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-09-12 10:14 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58402
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Ok, so the testcase requires that
1) critical edges are split (before PRE which isn't run at -O1)
2) the next CFG cleanup (after copyprop) will end up removing the
forwarders in a way building up a tree-argument PHI
3) PHI-OPT executes for the third time, this time with the exact
right CFG / PHI node present
my patch obfuscates the CFG gain by splitting edges and no CFG cleanup
running inbetween that and the late PHI-OPT pass.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/58402] [4.9 regression] FAIL: gcc.dg/tree-ssa/phi-opt-1.c scan-tree-dump-times optimized "if" 0
2013-09-12 9:46 [Bug middle-end/58402] New: [4.9 regression] FAIL: gcc.dg/tree-ssa/phi-opt-1.c scan-tree-dump-times optimized "if" 0 schwab@linux-m68k.org
` (2 preceding siblings ...)
2013-09-12 10:14 ` rguenth at gcc dot gnu.org
@ 2013-09-12 13:19 ` rguenth at gcc dot gnu.org
2013-09-12 13:21 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-09-12 13:19 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58402
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Sep 12 13:19:21 2013
New Revision: 202524
URL: http://gcc.gnu.org/viewcvs?rev=202524&root=gcc&view=rev
Log:
2013-09-12 Richard Biener <rguenther@suse.de>
PR tree-optimization/58402
* passes.def: Move pass_late_warn_uninitialized later.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/passes.def
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/58402] [4.9 regression] FAIL: gcc.dg/tree-ssa/phi-opt-1.c scan-tree-dump-times optimized "if" 0
2013-09-12 9:46 [Bug middle-end/58402] New: [4.9 regression] FAIL: gcc.dg/tree-ssa/phi-opt-1.c scan-tree-dump-times optimized "if" 0 schwab@linux-m68k.org
` (3 preceding siblings ...)
2013-09-12 13:19 ` rguenth at gcc dot gnu.org
@ 2013-09-12 13:21 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-09-12 13:21 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58402
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2013-09-12 13:21 UTC | newest]
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2013-09-12 9:46 [Bug middle-end/58402] New: [4.9 regression] FAIL: gcc.dg/tree-ssa/phi-opt-1.c scan-tree-dump-times optimized "if" 0 schwab@linux-m68k.org
2013-09-12 9:47 ` [Bug middle-end/58402] " schwab@linux-m68k.org
2013-09-12 9:54 ` rguenth at gcc dot gnu.org
2013-09-12 10:14 ` rguenth at gcc dot gnu.org
2013-09-12 13:19 ` rguenth at gcc dot gnu.org
2013-09-12 13:21 ` rguenth at gcc dot gnu.org
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