On Linux/x86_64,
aac02c9666184d19334a0527ec444b5e55fbd113 is the first bad commit
commit aac02c9666184d19334a0527ec444b5e55fbd113
Author: Konstantinos Eleftheriou <[email protected]>
Date: Thu Jul 9 02:22:54 2026 -0700
widening_mul: Lower long-multiply chains to inline longhand
caused
FAIL: gcc.target/i386/widen_mult_high_chain.c scan-assembler-times \tmulq 4
with GCC configured with
../../gcc/configure
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r17-3443/usr
--enable-clocale=gnu --with-system-zlib --with-demangler-in-ld
--with-fpmath=sse --enable-languages=c,c++,fortran --enable-cet --without-isl
--enable-libmpx x86_64-linux --disable-bootstrap
To reproduce:
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/widen_mult_high_chain.c
--target_board='unix{-m64\ -march=cascadelake}'"
(Please directly reply to this email for question about this report.)
(If you met problems with cascadelake related, disabling AVX512F in command
line might save that.)
(However, please make sure that there is no potential problems with AVX512.)
