Bug 62081 - [5 Regression] ICE: in fix_loop_structure, at loop-init.c:208 with -fno-tree-ch -fno-tree-cselim -fno-tree-dominator-opts -fno-tree-reassoc -fno-tree-sink
Summary: [5 Regression] ICE: in fix_loop_structure, at loop-init.c:208 with -fno-tree-...
Status: RESOLVED FIXED
Alias: None
Product: gcc
Classification: Unclassified
Component: tree-optimization (show other bugs)
Version: 5.0
: P3 normal
Target Milestone: 5.0
Assignee: Richard Biener
URL:
Keywords: ice-on-valid-code
Depends on:
Blocks:
 
Reported: 2014-08-10 11:07 UTC by Zdenek Sojka
Modified: 2014-08-14 13:15 UTC (History)
0 users

See Also:
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Build: x86_64-pc-linux-gnu
Known to work: 4.8.4, 4.9.2
Known to fail: 5.0
Last reconfirmed: 2014-08-11 00:00:00

Attachments
reduced testcase (73 bytes, text/x-csrc)
2014-08-10 11:07 UTC, Zdenek Sojka 		Details
View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Zdenek Sojka 2014-08-10 11:07:00 UTC 
Created attachment 33283 [details]
reduced testcase

Compiler output:
$ gcc -O -fno-tree-ch -fno-tree-cselim -fno-tree-dominator-opts -fno-tree-reassoc -fno-tree-sink testcase.c
testcase.c: In function 'foo':
testcase.c:4:1: internal compiler error: in fix_loop_structure, at loop-init.c:208
 foo ()
 ^
0x9defdf fix_loop_structure(bitmap_head*)
        /mnt/svn/gcc-trunk/gcc/loop-init.c:208
0xcb93fe gate_loop
        /mnt/svn/gcc-trunk/gcc/tree-ssa-loop.c:62
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r213777 - ICE
4_9 r212703 - OK
4_8 r212702 - OK
Comment 1 Richard Biener 2014-08-11 08:46:44 UTC 
I will have a look.
Comment 2 Richard Biener 2014-08-14 13:15:02 UTC 
Author: rguenth
Date: Thu Aug 14 13:14:24 2014
New Revision: 213961

URL: https://gcc.gnu.org/viewcvs?rev=213961&root=gcc&view=rev
Log:
2014-08-14  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/62081
	* tree-ssa-loop.c (pass_fix_loops): New pass.
	(pass_tree_loop::gate):  Do not fixup loops here.
	* tree-pass.h (make_pass_fix_loops): Declare.
	* passes.def: Schedule pass_fix_loops before GIMPLE loop passes.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/passes.def
    trunk/gcc/tree-pass.h
    trunk/gcc/tree-ssa-loop.c
Comment 3 Richard Biener 2014-08-14 13:15:35 UTC 
Fixed.