public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug target/106707] [13 Regression] ICE: in cselib_record_set, at cselib.cc:2687 with -Oz -g -fno-cprop-registers -fno-dce since r13-1945-gfc6ef90173478521
[not found] <bug-106707-4@http.gcc.gnu.org/bugzilla/>
@ 2022-08-30 10:08 ` ubizjak at gmail dot com
2022-09-01 22:22 ` cvs-commit at gcc dot gnu.org
1 sibling, 0 replies; 2+ messages in thread
From: ubizjak at gmail dot com @ 2022-08-30 10:08 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106707
--- Comment #5 from Uroš Bizjak <ubizjak at gmail dot com> ---
The following pattern is matched by a peephole2 pattern:
(insn 164 161 165 5 (set (reg:DI 0 ax [orig:91 _10 ] [91])
(reg:DI 0 ax)) "pr106707.c":13:12 82 {*movdi_internal}
(expr_list:REG_UNUSED (reg:DI 0 ax [orig:91 _10 ] [91])
(nil)))
and produces invalid RTL:
(insn 196 161 197 5 (parallel [
(set (reg:DI 0 ax [orig:91 _10 ] [91])
(reg:DI 0 ax))
(set (reg:DI 0 ax)
(reg:DI 0 ax [orig:91 _10 ] [91]))
]) "pr106707.c":13:12 -1
(nil))
The fix is similar to the one proposed in Comment #4, but we can use:
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index a4a18cf89f5..1aef1af594d 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -3043,8 +3043,8 @@
[(set (match_operand:SWI48 0 "general_reg_operand")
(match_operand:SWI48 1 "general_reg_operand"))]
"optimize_size > 1
- && (REGNO (operands[0]) == AX_REG
- || REGNO (operands[1]) == AX_REG)
+ && ((REGNO (operands[0]) == AX_REG)
+ != (REGNO (operands[1]) == AX_REG))
&& optimize_insn_for_size_p ()
&& peep2_reg_dead_p (1, operands[1])"
[(parallel [(set (match_dup 0) (match_dup 1))
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug target/106707] [13 Regression] ICE: in cselib_record_set, at cselib.cc:2687 with -Oz -g -fno-cprop-registers -fno-dce since r13-1945-gfc6ef90173478521
[not found] <bug-106707-4@http.gcc.gnu.org/bugzilla/>
2022-08-30 10:08 ` [Bug target/106707] [13 Regression] ICE: in cselib_record_set, at cselib.cc:2687 with -Oz -g -fno-cprop-registers -fno-dce since r13-1945-gfc6ef90173478521 ubizjak at gmail dot com
@ 2022-09-01 22:22 ` cvs-commit at gcc dot gnu.org
1 sibling, 0 replies; 2+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-09-01 22:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106707
--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by H.J. Lu <hjl@gcc.gnu.org>:
https://gcc.gnu.org/g:6761d362c3efe5f4ca3b0c66e6854015acf162a1
commit r13-2358-g6761d362c3efe5f4ca3b0c66e6854015acf162a1
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Sep 1 15:18:18 2022 -0700
i386: Replace long with long long for 64-bit integer
Replace long with long long for 64-bit integer since long may be 32
bits.
PR target/106707
* gcc.target/i386/pr106707.c (foo): Replace long with long long.
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2022-09-01 22:22 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
[not found] <bug-106707-4@http.gcc.gnu.org/bugzilla/>
2022-08-30 10:08 ` [Bug target/106707] [13 Regression] ICE: in cselib_record_set, at cselib.cc:2687 with -Oz -g -fno-cprop-registers -fno-dce since r13-1945-gfc6ef90173478521 ubizjak at gmail dot com
2022-09-01 22:22 ` cvs-commit at gcc dot gnu.org
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).