https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112804
Bug ID: 112804
Summary: ICE in aarch64 crosscompiler in plus_constant, at
explow.cc:102
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code, needs-bisection
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: fkastl at suse dot cz
Target Milestone: ---
Host: x86_64-linux
Target: aarch64-gnu-linux
Created attachment 56748
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56748&action=edit
Log of found plus_constant ICEs
While compiling the gcc.dg/tree-ssa/pr111583-2.c testcase from GCC testsuite
using the aarch64 cross compiler with the following options:
aarch64-linux-gnu-gcc
/home/worker/buildworker/tiber-option-juggler/build/gcc/testsuite/gcc.dg/tree-ssa/pr111583-2.c
-mabi=ilp32 -finline-stringops -ftrivial-auto-var-init=zero
the following ICE occurs:
during RTL pass: expand
/home/worker/buildworker/tiber-option-juggler/build/gcc/testsuite/gcc.dg/tree-ssa/pr111583-2.c:
In function ‘m’:
/home/worker/buildworker/tiber-option-juggler/build/gcc/testsuite/gcc.dg/tree-ssa/pr111583-2.c:18:25:
internal compiler error: in plus_constant, at explow.cc:102
18 | const unsigned short *n[65];
| ^
0x73fa6c plus_constant(machine_mode, rtx_def*, poly_int<2u, long>, bool)
/home/worker/buildworker/tiber-gcc-trunk-aarch64/build/gcc/explow.cc:102
0x89f52f try_store_by_multiple_pieces(rtx_def*, rtx_def*, unsigned int,
unsigned long, unsigned long, rtx_def*, char, unsigned int)
/home/worker/buildworker/tiber-gcc-trunk-aarch64/build/gcc/builtins.cc:4517
0x9d8870 clear_storage_hints(rtx_def*, rtx_def*, block_op_methods, unsigned
int, long, unsigned long, unsigned long, unsigned long, unsigned int)
/home/worker/buildworker/tiber-gcc-trunk-aarch64/build/gcc/expr.cc:3888
0x8a619b expand_builtin_memset_args
/home/worker/buildworker/tiber-gcc-trunk-aarch64/build/gcc/builtins.cc:4674
0xac23f7 expand_DEFERRED_INIT
/home/worker/buildworker/tiber-gcc-trunk-aarch64/build/gcc/internal-fn.cc:3357
0x8c6a37 expand_call_stmt
/home/worker/buildworker/tiber-gcc-trunk-aarch64/build/gcc/cfgexpand.cc:2738
0x8c6a37 expand_gimple_stmt_1
/home/worker/buildworker/tiber-gcc-trunk-aarch64/build/gcc/cfgexpand.cc:3881
0x8c6a37 expand_gimple_stmt
/home/worker/buildworker/tiber-gcc-trunk-aarch64/build/gcc/cfgexpand.cc:4045
0x8cbac7 expand_gimple_basic_block
/home/worker/buildworker/tiber-gcc-trunk-aarch64/build/gcc/cfgexpand.cc:6101
0x8cd7be execute
/home/worker/buildworker/tiber-gcc-trunk-aarch64/build/gcc/cfgexpand.cc:6836
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
The same bug (the same stacktrace) occurs on these testcases:
aarch64-linux-gnu-gcc
/home/worker/buildworker/tiber-option-juggler/build/gcc/testsuite/gcc.target/aarch64/mops_4.c
-mabi=ilp32 -finline-stringops
aarch64-linux-gnu-gcc
/home/worker/buildworker/tiber-option-juggler/build/gcc/testsuite/gcc.dg/pr34457-1.c
-mabi=ilp32 -finline-stringops
aarch64-linux-gnu-gfortran
/home/worker/buildworker/tiber-option-juggler/build/gcc/testsuite/gfortran.dg/pr49308.f90
-finline-stringops -mabi=ilp32
aarch64-linux-gnu-gcc
/home/worker/buildworker/tiber-option-juggler/build/gcc/testsuite/gcc.dg/ubsan/bounds-4b.c
-finline-stringops -mabi=ilp32 -Os
aarch64-linux-gnu-gfortran
/home/worker/buildworker/tiber-option-juggler/build/gcc/testsuite/gfortran.dg/analyzer/deferred_character_25.f90
-mabi=ilp32 -finline-stringops
ICE in plus_constant (similar, but different stacktrace) also occurs here:
aarch64-linux-gnu-gcc
/home/worker/buildworker/tiber-option-juggler/build/gcc/testsuite/gcc.target/aarch64/test_frame_5.c
-mabi=ilp32 -ftrivial-auto-var-init=pattern -finline-stringops
aarch64-linux-gnu-gcc
/home/worker/buildworker/tiber-option-juggler/build/gcc/testsuite/gcc.target/aarch64/stack-check-prologue-15.c
-ftrivial-auto-var-init=pattern -mabi=ilp32 -finline-stringops
aarch64-linux-gnu-g++
/home/worker/buildworker/tiber-option-juggler/build/gcc/testsuite/g++.dg/vect/pr84362.cc
-ftrivial-auto-var-init=pattern -mabi=ilp32 -finline-stringops
There are many more testcases that currently produce an ICE in plus_constant.
I'm attaching a full log of the ICEs.
Configuration of the compiler:
Using built-in specs.
COLLECT_GCC=/home/worker/cross/bin/aarch64-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/home/worker/cross/libexec/gcc/aarch64-linux-gnu/14.0.0/lto-wrapper
Target: aarch64-linux-gnu
Configured with:
/home/worker/buildworker/tiber-gcc-trunk-aarch64/build/configure
--enable-languages=c,c++,fortran,rust,m2 --disable-bootstrap
--disable-libsanitizer --disable-multilib --enable-checking=release
--prefix=/home/worker/cross --target=aarch64-linux-gnu
--with-as=/usr/bin/aarch64-suse-linux-as
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20231130 (experimental)
725c68c54c265fe7f6fc7babff7139f3161bdfa6 (GCC)
