https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117053
Bug ID: 117053
Summary: [15 Regression] ICE in extract_insn building glibc
testsuite tst-svc2.c
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: jsm28 at gcc dot gnu.org
CC: jakub at gcc dot gnu.org
Target Milestone: ---
Target: i?86-*-*
Created attachment 59303
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59303&action=edit
preprocessed source
The recent commit
commit 37554bacfd38b1466278b529d9e70a44d7b1b909
Author: Jakub Jelinek <[email protected]>
Date: Mon Oct 7 10:50:39 2024 +0200
ssa-math-opts, i386: Improve spaceship expansion [PR116896]
introduced an ICE building the glibc testsuite for i486-linux-gnu (there's also
an ICE for i586-linux-gnu, probably the same though I didn't investigate /
bisect it separately). Build the attached test with -m32 -march=i486 -O2 (I was
testing with an x86_64-linux-gnu compiler with those options including -m32).
tst-svc2.c: In function 'compare':
tst-svc2.c:26:1: error: unrecognizable insn:
26 | }
| ^
(insn 20 19 21 2 (set (reg:SI 107)
(zero_extend:SI (reg:QI 106))) -1
(nil))
during RTL pass: vregs
tst-svc2.c:26:1: internal compiler error: in extract_insn, at recog.cc:2882
0x24b6a50 internal_error(char const*, ...)
/notnfs/josmyers/glibc-manual/src/gcc/gcc/diagnostic-global-context.cc:517
0x956b91 fancy_abort(char const*, int, char const*)
/notnfs/josmyers/glibc-manual/src/gcc/gcc/diagnostic.cc:1617
0x7ec8e6 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/notnfs/josmyers/glibc-manual/src/gcc/gcc/rtl-error.cc:108
0x7ec902 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/notnfs/josmyers/glibc-manual/src/gcc/gcc/rtl-error.cc:116
0x7eadf6 extract_insn(rtx_insn*)
/notnfs/josmyers/glibc-manual/src/gcc/gcc/recog.cc:2882
0xca9015 instantiate_virtual_regs_in_insn
/notnfs/josmyers/glibc-manual/src/gcc/gcc/function.cc:1612
0xca9015 instantiate_virtual_regs
/notnfs/josmyers/glibc-manual/src/gcc/gcc/function.cc:1995
0xca9015 execute
/notnfs/josmyers/glibc-manual/src/gcc/gcc/function.cc:2042
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