public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
From: "mhlavink at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/52148] New: [4.7 regression] ICE: in spill_failure, at reload1.c:2120
Date: Tue, 07 Feb 2012 10:55:00 -0000 [thread overview]
Message-ID: <bug-52148-4@http.gcc.gnu.org/bugzilla/> (raw)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52148
Bug #: 52148
Summary: [4.7 regression] ICE: in spill_failure, at
reload1.c:2120
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: mhlavink@redhat.com
Created attachment 26601
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26601
pre-processed reproducer
gcc 4.7 fails on code that was working in 4.6 without any problem
Version: 4.7.0-20120204
Target: avr
Problem happens only when optimization (O2 or O3) is used.
Pre-processed reproducer attached.
$ avr-gcc -mmcu=atmega64 -O2 allsrce.cpp -c -o allsrc.o
allsrce.cpp: In function 'void applyExpos(int16_t*, uint8_t)':
allsrce.cpp:68:1: error: unable to find a register to spill in class
'POINTER_REGS'
allsrce.cpp:68:1: error: this is the insn:
(insn 17 16 9 2 (parallel [
(set (mem:BLK (reg:HI 26 r26) [0 A8])
(mem:BLK (reg/v/f:HI 97 [ anas ]) [0 A8]))
(unspec [
(const_int 0 [0])
] UNSPEC_MOVMEM)
(use (reg:QI 24 r24 [99]))
(clobber (reg:HI 26 r26))
(clobber (reg:HI 30 r30))
(clobber (reg:QI 0 r0))
(clobber (reg:QI 24 r24 [99]))
]) allsrce.cpp:49 29 {movmem_qi}
(expr_list:REG_DEAD (reg:QI 24 r24 [99])
(expr_list:REG_DEAD (reg:QI 27 r27)
(expr_list:REG_UNUSED (reg:QI 24 r24 [99])
(expr_list:REG_UNUSED (reg:QI 0 r0)
(expr_list:REG_UNUSED (reg:HI 30 r30)
(expr_list:REG_UNUSED (reg:HI 26 r26)
(nil))))))))
allsrce.cpp:68:1: internal compiler error: in spill_failure, at reload1.c:2120
Please submit a full bug report,
with preprocessed source if appropriate.
Additional information:
$ avr-gcc -v
Using built-in specs.
COLLECT_GCC=avr-gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/avr/4.7.0/lto-wrapper
Target: avr
Configured with: ../gcc-4.7-20120204/configure --prefix=/usr
--mandir=/usr/share/man --infodir=/usr/share/info --target=avr
--enable-languages=c,c++ --disable-nls --disable-libssp --with-system-zlib
--enable-version-specific-runtime-libs --with-pkgversion='Fedora 4.7-0.fc16.1'
--with-bugurl=https://bugzilla.redhat.com/
Thread model: single
gcc version 4.7.0 20120204 (experimental) (Fedora 4.7-0.fc16.1)
next reply other threads:[~2012-02-07 10:55 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-07 10:55 mhlavink at redhat dot com [this message]
2012-02-07 10:59 ` [Bug rtl-optimization/52148] " mhlavink at redhat dot com
2012-02-07 11:17 ` rguenth at gcc dot gnu.org
2012-02-07 15:51 ` rguenth at gcc dot gnu.org
2012-02-17 12:18 ` gjl at gcc dot gnu.org
2012-02-17 12:33 ` gjl at gcc dot gnu.org
2012-02-28 8:56 ` gjl at gcc dot gnu.org
2012-02-28 9:05 ` gjl at gcc dot gnu.org
2012-03-12 17:36 ` gjl at gcc dot gnu.org
2012-03-22 15:17 ` gjl at gcc dot gnu.org
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=bug-52148-4@http.gcc.gnu.org/bugzilla/ \
--to=gcc-bugzilla@gcc.gnu.org \
--cc=gcc-bugs@gcc.gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).