https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99422
Bug ID: 99422
Summary: [11 Regression] ICE in extract_constrain_insn building
glibc pthread_create
Product: gcc
Version: 11.0
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: vmakarov at gcc dot gnu.org
Target Milestone: ---
Target: i686-*-linux-gnu
Created attachment 50314
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50314&action=edit
preprocessed source
Commit 9105757a59b890194ebf5b4fcbacd58db34ef332 ("[PR99378] LRA: Skip
decomposing address for asm insn operand with unknown constraint.") introduced
the following ICE building glibc for i686-linux-gnu. Tested with an x86_64
compiler; compile the attached .i file with the following options: -m32
-march=i686 -O2 -pg -S
In file included from pthread_create.c:59:
allocatestack.c: In function '__nptl_setxid':
allocatestack.c:1173:1: error: unrecognizable insn:
(insn 103 534 535 21 (parallel [
(set (mem/v:SI (plus:SI (mem/f/c:SI (plus:SI (reg/f:SI 6 bp)
(const_int 8 [0x8])) [85 cmdp+0 S4 A32])
(const_int 16 [0x10])) [5 cmdp_52(D)->cntr+0 S4 A32])
(asm_operands/v:SI ("lock;incl %0") ("=m") 0 [
(mem/v:SI (plus:SI (reg:SI 0 ax [208])
(const_int 16 [0x10])) [5 cmdp_52(D)->cntr+0 S4
A32])
(const_int 12 [0xc])
]
[
(asm_input:SI ("m") allocatestack.c:1036)
(asm_input:SI ("i") allocatestack.c:1036)
]
[] allocatestack.c:1036))
(clobber (reg:CC 17 flags))
]) "allocatestack.c":1036:47 -1
(nil))
during RTL pass: reload
allocatestack.c:1173:1: internal compiler error: in extract_constrain_insn, at
recog.c:2670
0x63ae76 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/scratch/jmyers/glibc/many11/src/gcc/gcc/rtl-error.c:108
0x63ae92 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/scratch/jmyers/glibc/many11/src/gcc/gcc/rtl-error.c:116
0xd1149d extract_constrain_insn(rtx_insn*)
/scratch/jmyers/glibc/many11/src/gcc/gcc/recog.c:2670
0xbec6a7 check_rtl
/scratch/jmyers/glibc/many11/src/gcc/gcc/lra.c:2087
0xbf14ac lra(_IO_FILE*)
/scratch/jmyers/glibc/many11/src/gcc/gcc/lra.c:2505
0xba1489 do_reload
/scratch/jmyers/glibc/many11/src/gcc/gcc/ira.c:5827
0xba1489 execute
/scratch/jmyers/glibc/many11/src/gcc/gcc/ira.c:6013
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
