On Linux/x86_64,
d0e891406b16dc28905717de2333f5637cf71d3e is the first bad commit
commit d0e891406b16dc28905717de2333f5637cf71d3e
Author: Roger Sayle <ro...@nextmovesoftware.com>
Date: Fri Jun 23 15:23:20 2023 +0100
Improved SUBREG simplifications in simplify-rtx.cc's simplify_subreg.
caused
FAIL: gcc.target/i386/pr78904-1b.c scan-assembler-not movb
FAIL: gcc.target/i386/pr78904-1b.c scan-assembler [ \t]andb
FAIL: gcc.target/i386/pr78904-1b.c scan-assembler [ \t]orb
FAIL: gcc.target/i386/pr78904-1b.c scan-assembler [ \t]xorb
with GCC configured with
../../gcc/configure
--prefix=/export/users/haochenj/src/gcc-bisect/master/master/r14-2047/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/pr78904-1b.c --target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/pr78904-1b.c --target_board='unix{-m64\
-march=cascadelake}'"
(Please do not reply to this email, for question about this report, contact me
at haochen dot jiang at intel.com)
