[r13-4749 Regression] FAIL: gcc.dg/ira-loop-pressure.c scan-rtl-dump loop2_invariant "Decided to move invariant" on Linux/x86_64

[haochen.jiang]

On Linux/x86_64,

b50fe16a3b2214c418ecc5febc0bb21bc17912b7 is the first bad commit
commit b50fe16a3b2214c418ecc5febc0bb21bc17912b7
Author: Vladimir N. Makarov <vmakarov@redhat.com>
Date:   Fri Dec 16 13:16:31 2022 -0500

    Revert "IRA: Check that reg classes contain a hard reg of given mode in reg move cost calculation"

caused

FAIL: gcc.dg/ira-loop-pressure.c scan-rtl-dump loop2_invariant "Decided to move invariant"

with GCC configured with

../../gcc/configure --prefix=/export/users/haochenj/src/gcc-bisect/master/master/r13-4749/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="dg.exp=gcc.dg/ira-loop-pressure.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)