Bug 27906 - reload allocates register of live register variable to earlyclobber output
Summary: reload allocates register of live register variable to earlyclobber output
Status: RESOLVED FIXED
Alias: None
Product: gcc
Classification: Unclassified
Component: middle-end (show other bugs)
Version: 4.2.0
: P3 normal
Target Milestone: ---
Assignee: Not yet assigned to anyone
URL:
Keywords: build, ice-on-valid-code, wrong-code
Depends on:
Blocks: 29842
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Reported: 2006-06-05 21:44 UTC by Jorn Wolfgang Rennecke
Modified: 2019-03-05 08:42 UTC (History)
2 users (show)

See Also:
Host:
Target: sh-elf
Build:
Known to work:
Known to fail:
Last reconfirmed: 2006-06-06 04:31:37

Attachments
testcase (preprocessed __udivmoddi4 source) (13.75 KB, text/plain)
2006-06-05 21:46 UTC, Jorn Wolfgang Rennecke 		Details
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Description Jorn Wolfgang Rennecke 2006-06-05 21:44:10 UTC 
Compile the testcase with:
.../cc1 -fpreprocessed libgcc2.i  -g -O2   -fnon-call-exceptions -o libgcc2.s
This results in an ICE in reload_cse_simplify_operands, since an earlyclobber
output has been allocated the same register as an input of an asm template.
Comment 1 Jorn Wolfgang Rennecke 2006-06-05 21:46:43 UTC 
Created attachment 11599 [details]
testcase (preprocessed __udivmoddi4 source)
Comment 2 Oleg Endo 2013-12-05 19:51:06 UTC 
I've tried this on rev 205674 (4.9) and it seems that time has fixed the issue.
Comment 3 Steven Bosscher 2019-03-05 08:42:35 UTC 
Reportedly fixed (comment #2).