Bug 2336215

Summary:	GCC 15 mass prebuild: lirc ICE on s390x: "commandir.c:2459:1: internal compiler error: in simplify_subreg, at simplify-rtx.cc:7811"
Product:	[Fedora] Fedora	Reporter:	Dave Malcolm <dmalcolm>
Component:	gcc	Assignee:	Jakub Jelinek <jakub>
Status:	CLOSED RAWHIDE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	rawhide	CC:	dmalcolm, fweimer, jakub, jlaw, josmyers, jwakely, mcermak, mpolacek, msebor, nickc, nixuser, sipoyare
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Hardware:	Unspecified
OS:	Linux
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Last Closed:	2025-01-13 12:31:15 UTC	Type:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Bug Depends On:
Bug Blocks:	2333037

Description Dave Malcolm 2025-01-07 19:43:41 UTC

Seen on this build:
  https://copr.fedorainfracloud.org/coprs/dmalcolm/gcc-15-smoketest-3.failed/build/8476684/

using gcc-15.0.0-0.2.fc42 from this scratch build by Jakub: 
   https://koji.fedoraproject.org/koji/taskinfo?taskID=126495782

where the s390x build crashes (the other archs succeeded):

during RTL pass: combine
commandir.c: In function 'raise_event':
commandir.c:2459:1: internal compiler error: in simplify_subreg, at simplify-rtx.cc:7811
 2459 | }
      | ^
Please submit a full bug report, with preprocessed source (by using -freport-bug).
See <http://bugzilla.redhat.com/bugzilla> for instructions.



Reproducible: Didn't try

Comment 1 Jakub Jelinek 2025-01-08 16:35:00 UTC

Created attachment 2065153 [details]
ccPWXpC5.out

Preprocessed source.
I'll now try to reduce this and bisect.

Comment 2 Jakub Jelinek 2025-01-08 18:02:58 UTC

Started with https://gcc.gnu.org/r15-2002

Comment 3 Jakub Jelinek 2025-01-13 12:31:15 UTC

This should be fixed in gcc-15.0.0-0.4.fc42.