https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124136
Bug ID: 124136
Summary: [16 Regression] ICE in bitmap_first_set_bit_worker, at
bitmap.cc:1233
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at gcc dot gnu.org
Target Milestone: ---
seen with trunk 20260210 on *-linux-gnu:
during RTL pass: x86_cse
/<<PKGBUILDDIR>>/src/cpu/x64/gemm/amx/jit_avx512_core_amx_copy_kern.cpp: In
member function
‘dnnl::impl::cpu::x64::jit_avx512_core_amx_copy_kern_t::kernel_BN(int, int,
int, Xbyak::Reg64, Xbyak::Reg64, bool)’:
/<<PKGBUILDDIR>>/src/cpu/x64/gemm/amx/jit_avx512_core_amx_copy_kern.cpp:182:1:
internal compiler error: in bitmap_first_set_bit_worker, at bitmap.cc:1233
182 | }
| ^
0x21c6cd1 internal_error(char const*, ...)
../../src/gcc/diagnostic-global-context.cc:787
0x21c6e4b fancy_abort(char const*, int, char const*)
../../src/gcc/diagnostics/context.cc:1812
0xea790e bitmap_first_set_bit_worker
../../src/gcc/bitmap.cc:1233
0xea790e bitmap_first_set_bit(bitmap_head const*)
../../src/gcc/bitmap.cc:1299
0xea790e nearest_common_dominator_for_set(cdi_direction, bitmap_head*) [clone
.constprop.0]
../../src/gcc/dominance.cc:1039
0x1bd8b7f ix86_get_dominator_for_reg
../../src/gcc/config/i386/i386-features.cc:3898
0x1be6090 ix86_emit_tls_call
../../src/gcc/config/i386/i386-features.cc:4116
0x1be6090 ix86_place_single_tls_call
../../src/gcc/config/i386/i386-features.cc:4197
0x102152d x86_cse
../../src/gcc/config/i386/i386-features.cc:4780
0x102152d execute
../../src/gcc/config/i386/i386-features.cc:4295
complete build log at
https://launchpadlibrarian.net/847954679/buildlog_ubuntu-resolute-amd64.onednn_3.9.1+ds-2_BUILDING.txt.gz
