On Linux/x86_64,
f2609a4c653a4993eec7ed9a2ad05caf936f0178 is the first bad commit
commit f2609a4c653a4993eec7ed9a2ad05caf936f0178
Author: Roger Sayle <[email protected]>
Date: Sat May 16 08:44:06 2026 +0100
x86_64: Handle hard registers in TImode STV with inter-unit moves.
caused
FAIL: gcc.target/i386/rotate-2.c scan-assembler-times shrdq 2
with GCC configured with
../../gcc/configure
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r17-548/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/rotate-2.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.)
