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* [Bug rtl-optimization/52175] New: [4.7 regression] ICE in maybe_record_trace_start after invalid dbr_schedule transformation
@ 2012-02-08 19:12 rsandifo at gcc dot gnu.org
2012-02-08 19:12 ` [Bug rtl-optimization/52175] " rsandifo at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: rsandifo at gcc dot gnu.org @ 2012-02-08 19:12 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52175
Bug #: 52175
Summary: [4.7 regression] ICE in maybe_record_trace_start after
invalid dbr_schedule transformation
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: rsandifo@gcc.gnu.org
Created attachment 26618
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26618
Testcase
The attached testcase fails on MIPS targets (e.g. mipsisa64-elf
and mips64-linux-gnu) when compiled with -O2 -g:
foo.c: In function ‘foo’:
foo.c:25:1: internal compiler error: in maybe_record_trace_start, at
dwarf2cfi.c:2231
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
The problem is that dbr_schedule is applying its PLUS/MINUS
optimisation to a stack adjustment: that is, it fills a
delay slot with a stack adjustment that is only valid on
one edge, then inserts the opposite adjustment on the
other edge.
This is related to PR51471. We shouldn't do this
adjustment for frame-related instructions.
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug rtl-optimization/52175] [4.7 regression] ICE in maybe_record_trace_start after invalid dbr_schedule transformation 2012-02-08 19:12 [Bug rtl-optimization/52175] New: [4.7 regression] ICE in maybe_record_trace_start after invalid dbr_schedule transformation rsandifo at gcc dot gnu.org @ 2012-02-08 19:12 ` rsandifo at gcc dot gnu.org 2012-02-09 12:29 ` rguenth at gcc dot gnu.org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: rsandifo at gcc dot gnu.org @ 2012-02-08 19:12 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52175 rsandifo@gcc.gnu.org <rsandifo at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target| |mips*-*-* Status|UNCONFIRMED |ASSIGNED Last reconfirmed| |2012-02-08 AssignedTo|unassigned at gcc dot |rsandifo at gcc dot gnu.org |gnu.org | Ever Confirmed|0 |1 --- Comment #1 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 2012-02-08 19:12:19 UTC --- Testing a fix. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/52175] [4.7 regression] ICE in maybe_record_trace_start after invalid dbr_schedule transformation 2012-02-08 19:12 [Bug rtl-optimization/52175] New: [4.7 regression] ICE in maybe_record_trace_start after invalid dbr_schedule transformation rsandifo at gcc dot gnu.org 2012-02-08 19:12 ` [Bug rtl-optimization/52175] " rsandifo at gcc dot gnu.org @ 2012-02-09 12:29 ` rguenth at gcc dot gnu.org 2012-02-11 9:01 ` rsandifo at gcc dot gnu.org 2012-02-11 9:16 ` rsandifo at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: rguenth at gcc dot gnu.org @ 2012-02-09 12:29 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52175 Richard Guenther <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |4.7.0 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/52175] [4.7 regression] ICE in maybe_record_trace_start after invalid dbr_schedule transformation 2012-02-08 19:12 [Bug rtl-optimization/52175] New: [4.7 regression] ICE in maybe_record_trace_start after invalid dbr_schedule transformation rsandifo at gcc dot gnu.org 2012-02-08 19:12 ` [Bug rtl-optimization/52175] " rsandifo at gcc dot gnu.org 2012-02-09 12:29 ` rguenth at gcc dot gnu.org @ 2012-02-11 9:01 ` rsandifo at gcc dot gnu.org 2012-02-11 9:16 ` rsandifo at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: rsandifo at gcc dot gnu.org @ 2012-02-11 9:01 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52175 --- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 2012-02-11 09:00:47 UTC --- Author: rsandifo Date: Sat Feb 11 09:00:42 2012 New Revision: 184128 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=184128 Log: gcc/ PR rtl-optimization/52175 * reorg.c (fill_slots_from_thread): Don't apply add/sub optimization to frame-related instructions. gcc/testsuite/ PR rtl-optimization/52175 * gcc.c-torture/compile/pr52175.c: New test. Added: trunk/gcc/testsuite/gcc.c-torture/compile/pr52175.c Modified: trunk/gcc/ChangeLog trunk/gcc/reorg.c trunk/gcc/testsuite/ChangeLog ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/52175] [4.7 regression] ICE in maybe_record_trace_start after invalid dbr_schedule transformation 2012-02-08 19:12 [Bug rtl-optimization/52175] New: [4.7 regression] ICE in maybe_record_trace_start after invalid dbr_schedule transformation rsandifo at gcc dot gnu.org ` (2 preceding siblings ...) 2012-02-11 9:01 ` rsandifo at gcc dot gnu.org @ 2012-02-11 9:16 ` rsandifo at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: rsandifo at gcc dot gnu.org @ 2012-02-11 9:16 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52175 rsandifo@gcc.gnu.org <rsandifo at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED --- Comment #3 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 2012-02-11 09:16:06 UTC --- Patch applied. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2012-02-11 9:16 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2012-02-08 19:12 [Bug rtl-optimization/52175] New: [4.7 regression] ICE in maybe_record_trace_start after invalid dbr_schedule transformation rsandifo at gcc dot gnu.org 2012-02-08 19:12 ` [Bug rtl-optimization/52175] " rsandifo at gcc dot gnu.org 2012-02-09 12:29 ` rguenth at gcc dot gnu.org 2012-02-11 9:01 ` rsandifo at gcc dot gnu.org 2012-02-11 9:16 ` rsandifo at gcc dot gnu.org
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