https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94286
Bug ID: 94286
Summary: [10 Regression] ICE: in decompose, at rtl.h:2279 with
__builtin_sub_overflow() at -O -g
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: armv7a-hardfloat-linux-gnueabi
Created attachment 48091
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48091&action=edit
reduced testcase
Compiler output:
$ armv7a-hardfloat-linux-gnueabi-gcc -O -g testcase.c
during RTL pass: vartrack
testcase.c: In function 'foo':
testcase.c:7:1: internal compiler error: in decompose, at rtl.h:2279
7 | }
| ^
0x705186 neg_poly_int_rtx
/repo/gcc-trunk/gcc/rtl.h:2279
0x10120f9 simplify_binary_operation_1
/repo/gcc-trunk/gcc/simplify-rtx.c:2677
0x1013d05 simplify_binary_operation(rtx_code, machine_mode, rtx_def*, rtx_def*)
/repo/gcc-trunk/gcc/simplify-rtx.c:2291
0x1013d78 simplify_gen_binary(rtx_code, machine_mode, rtx_def*, rtx_def*)
/repo/gcc-trunk/gcc/simplify-rtx.c:189
0x1339eca reverse_op
/repo/gcc-trunk/gcc/var-tracking.c:5942
0x1339eca add_stores
/repo/gcc-trunk/gcc/var-tracking.c:6211
0xfcc887 note_pattern_stores(rtx_def const*, void (*)(rtx_def*, rtx_def const*,
void*), void*)
/repo/gcc-trunk/gcc/rtlanal.c:1940
0x1333759 add_with_sets
/repo/gcc-trunk/gcc/var-tracking.c:6634
0xbc03ed cselib_record_sets
/repo/gcc-trunk/gcc/cselib.c:2644
0xbc196a cselib_process_insn(rtx_insn*)
/repo/gcc-trunk/gcc/cselib.c:2806
0x13403d8 vt_initialize
/repo/gcc-trunk/gcc/var-tracking.c:10221
0x134b347 variable_tracking_main_1
/repo/gcc-trunk/gcc/var-tracking.c:10450
0x134b347 variable_tracking_main()
/repo/gcc-trunk/gcc/var-tracking.c:10503
0x134b347 execute
/repo/gcc-trunk/gcc/var-tracking.c:10540
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.
$ armv7a-hardfloat-linux-gnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-armv7a-hardfloat/bin/armv7a-hardfloat-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r10-7327-20200323085706-g2fa4b1ffd6e-checking-yes-rtl-df-extra-armv7a-hardfloat/bin/../libexec/gcc/armv7a-hardfloat-linux-gnueabi/10.0.1/lto-wrapper
Target: armv7a-hardfloat-linux-gnueabi
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --with-float=hard --with-fpu=vfpv4
--with-arch=armv7-a --with-sysroot=/usr/armv7a-hardfloat-linux-gnueabi
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=armv7a-hardfloat-linux-gnueabi
--with-ld=/usr/bin/armv7a-hardfloat-linux-gnueabi-ld
--with-as=/usr/bin/armv7a-hardfloat-linux-gnueabi-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r10-7327-20200323085706-g2fa4b1ffd6e-checking-yes-rtl-df-extra-armv7a-hardfloat
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 10.0.1 20200323 (experimental) (GCC)
