Bug 12158

Summary: [3.3 regression] [hppa] compilation does not terminate at -O1
Product: gcc Reporter: Debian GCC Maintainers <debian-gcc>
Component: rtl-optimizationAssignee: Eric Botcazou <ebotcazou>
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
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!