Bug 12158

Summary:	[3.3 regression] [hppa] compilation does not terminate at -O1
Product:	gcc	Reporter:	Debian GCC Maintainers <debian-gcc>
Component:	rtl-optimization	Assignee:	Eric Botcazou <ebotcazou>
Status:	RESOLVED FIXED
Severity:	critical	CC:	gcc-bugs, jakub
Priority:	P2	Keywords:	patch
Version:	3.3.2
Target Milestone:	3.3.3
Host:	hppa-linux	Target:	hppa-linux
Build:	hppa-linux	Known to work:
Known to fail:		Last reconfirmed:	2003-12-21 21:00:18
Attachments:	preprocessed source Test case (30 lines)

Description Debian GCC Maintainers 2003-09-03 20:19:56 UTC

[forwarded from http://bugs.debian.org/207516]

seen with 3.3 branch 20030831.

gcc -c -O1 doesn't terminate (-O0 and -O2 and gcc -3.2 -O[012]) do.

the memory consumption remains constant over at least 10 CPU minutes.

Comment 1 Debian GCC Maintainers 2003-09-03 20:20:28 UTC

Created attachment 4695 [details]
preprocessed source

Comment 2 Mark Mitchell 2003-10-16 09:29:42 UTC

Postponed until GCC 3.3.3.

Comment 3 Falk Hueffner 2003-11-16 03:49:27 UTC

Confirmed with 3.3.2, will attach test case

Comment 4 Falk Hueffner 2003-11-16 03:50:22 UTC

Created attachment 5144 [details]
Test case (30 lines)

Comment 5 Eric Botcazou 2003-12-11 11:17:31 UTC

Investigating.

Comment 6 Gabriel Dos Reis 2003-12-24 21:13:26 UTC

Eric --

I know it is Christmas :-)

Did you make any progress in your investigation?

Merry Christmas, BTW

Comment 7 Eric Botcazou 2003-12-25 09:45:07 UTC

See http://gcc.gnu.org/ml/gcc-patches/2003-12/msg01946.html

Comment 8 Eric Botcazou 2004-01-05 07:41:58 UTC

Fixed by:

2004-01-01  Jakub Jelinek  <jakub@redhat.com>

	PR optimization/13521
	Backport from mainline:
		2003-03-22  Richard Henderson <rth@redhat.com>

		* cfgcleanup.c (insns_match_p): Do not do EQUIV substitution
		after reload.

Thanks and Happy New Year, Jakub!