public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug target/95444] New: Incorrect constraints on length operand in cmpstrnqi patterns
@ 2020-05-30 22:09 hjl.tools at gmail dot com
2020-05-31 23:13 ` [Bug target/95444] " hjl.tools at gmail dot com
0 siblings, 1 reply; 2+ messages in thread
From: hjl.tools at gmail dot com @ 2020-05-30 22:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95444
Bug ID: 95444
Summary: Incorrect constraints on length operand in cmpstrnqi
patterns
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
CC: crazylht at gmail dot com, hubicka at ucw dot cz, ubizjak at gmail dot com
Target Milestone: ---
Target: i386,x864-64
cmpstrnqi patterns has
(define_insn "*cmpstrnqi_1"
[(set (reg:CC FLAGS_REG)
(if_then_else:CC (ne (match_operand:P 6 "register_operand" "2")
(const_int 0))
(compare:CC (mem:BLK (match_operand:P 4 "register_operand" "0"))
(mem:BLK (match_operand:P 5 "register_operand" "1")))
(const_int 0)))
(use (match_operand:SI 3 "immediate_operand" "i"))
(use (reg:CC FLAGS_REG))
(clobber (match_operand:P 0 "register_operand" "=S"))
(clobber (match_operand:P 1 "register_operand" "=D"))
(clobber (match_operand:P 2 "register_operand" "=c"))]
"=c" is incorrect since the CX register is used for both input and output.
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug target/95444] Incorrect constraints on length operand in cmpstrnqi patterns
2020-05-30 22:09 [Bug target/95444] New: Incorrect constraints on length operand in cmpstrnqi patterns hjl.tools at gmail dot com
@ 2020-05-31 23:13 ` hjl.tools at gmail dot com
0 siblings, 0 replies; 2+ messages in thread
From: hjl.tools at gmail dot com @ 2020-05-31 23:13 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95444
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |INVALID
Status|UNCONFIRMED |RESOLVED
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
Invalid.
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2020-05-31 23:13 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-05-30 22:09 [Bug target/95444] New: Incorrect constraints on length operand in cmpstrnqi patterns hjl.tools at gmail dot com
2020-05-31 23:13 ` [Bug target/95444] " hjl.tools at gmail dot com
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).