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* [Bug rtl-optimization/40626] New: -frename-registers causes register corruption
@ 2009-07-02 21:40 dj at redhat dot com
2009-07-02 21:41 ` [Bug rtl-optimization/40626] " dj at redhat dot com
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: dj at redhat dot com @ 2009-07-02 21:40 UTC (permalink / raw)
To: gcc-bugs
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 743 bytes --]
When compiled with -frename-registers, the TBA test case produces invalid
code. Specifically, the cpadd4.h opcode clobbers $c1 but the cpsub2.h
assumes it still has the value "a" in it. Compiling with
-fno-rename-registers results in valid code.
--
Summary: -frename-registers causes register corruption
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: dj at redhat dot com
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: mep-elf
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40626
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug rtl-optimization/40626] -frename-registers causes register corruption
2009-07-02 21:40 [Bug rtl-optimization/40626] New: -frename-registers causes register corruption dj at redhat dot com
@ 2009-07-02 21:41 ` dj at redhat dot com
2009-07-02 21:42 ` dj at redhat dot com
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: dj at redhat dot com @ 2009-07-02 21:41 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from dj at redhat dot com 2009-07-02 21:41 -------
Created an attachment (id=18129)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18129&action=view)
test case for the above
Compile with:
./cc1 -quiet -mivc2 dj.c -O2 -o dj.s -frename-registers
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40626
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug rtl-optimization/40626] -frename-registers causes register corruption
2009-07-02 21:40 [Bug rtl-optimization/40626] New: -frename-registers causes register corruption dj at redhat dot com
2009-07-02 21:41 ` [Bug rtl-optimization/40626] " dj at redhat dot com
@ 2009-07-02 21:42 ` dj at redhat dot com
2009-07-02 21:43 ` dj at redhat dot com
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: dj at redhat dot com @ 2009-07-02 21:42 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from dj at redhat dot com 2009-07-02 21:42 -------
Created an attachment (id=18130)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18130&action=view)
resulting .s
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40626
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug rtl-optimization/40626] -frename-registers causes register corruption
2009-07-02 21:40 [Bug rtl-optimization/40626] New: -frename-registers causes register corruption dj at redhat dot com
2009-07-02 21:41 ` [Bug rtl-optimization/40626] " dj at redhat dot com
2009-07-02 21:42 ` dj at redhat dot com
@ 2009-07-02 21:43 ` dj at redhat dot com
2009-07-02 21:43 ` dj at redhat dot com
2009-07-10 2:56 ` dj at redhat dot com
4 siblings, 0 replies; 6+ messages in thread
From: dj at redhat dot com @ 2009-07-02 21:43 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from dj at redhat dot com 2009-07-02 21:42 -------
Created an attachment (id=18131)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18131&action=view)
dump just before rnreg
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40626
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug rtl-optimization/40626] -frename-registers causes register corruption
2009-07-02 21:40 [Bug rtl-optimization/40626] New: -frename-registers causes register corruption dj at redhat dot com
` (2 preceding siblings ...)
2009-07-02 21:43 ` dj at redhat dot com
@ 2009-07-02 21:43 ` dj at redhat dot com
2009-07-10 2:56 ` dj at redhat dot com
4 siblings, 0 replies; 6+ messages in thread
From: dj at redhat dot com @ 2009-07-02 21:43 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from dj at redhat dot com 2009-07-02 21:43 -------
Created an attachment (id=18132)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18132&action=view)
dump just after rnreg
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40626
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug rtl-optimization/40626] -frename-registers causes register corruption
2009-07-02 21:40 [Bug rtl-optimization/40626] New: -frename-registers causes register corruption dj at redhat dot com
` (3 preceding siblings ...)
2009-07-02 21:43 ` dj at redhat dot com
@ 2009-07-10 2:56 ` dj at redhat dot com
4 siblings, 0 replies; 6+ messages in thread
From: dj at redhat dot com @ 2009-07-10 2:56 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from dj at redhat dot com 2009-07-10 02:56 -------
http://gcc.gnu.org/ml/gcc-patches/2009-07/msg00546.html
Fixed in revision 149455.
--
dj at redhat dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40626
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2009-07-10 2:56 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2009-07-02 21:40 [Bug rtl-optimization/40626] New: -frename-registers causes register corruption dj at redhat dot com
2009-07-02 21:41 ` [Bug rtl-optimization/40626] " dj at redhat dot com
2009-07-02 21:42 ` dj at redhat dot com
2009-07-02 21:43 ` dj at redhat dot com
2009-07-02 21:43 ` dj at redhat dot com
2009-07-10 2:56 ` dj at redhat dot com
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