[r13-4727 Regression] FAIL: gcc.target/i386/pr64110.c scan-assembler vmovd[\\t ] on Linux/x86_64

[r13-4727 Regression] FAIL: gcc.target/i386/pr64110.c scan-assembler vmovd[\\t ] on Linux/x86_64

[haochen.jiang]

On Linux/x86_64,

12abd5a7d13209f79664ea603b3f3517f71b8c4f is the first bad commit
commit 12abd5a7d13209f79664ea603b3f3517f71b8c4f
Author: Vladimir N. Makarov <vmakarov@redhat.com>
Date:   Thu Dec 15 14:11:05 2022 -0500

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

caused

FAIL: 20_util/to_chars/float16_c++23.cc execution test
FAIL: gcc.target/i386/pr64110.c scan-assembler vmovd[\\t ]

with GCC configured with

../../gcc/configure --prefix=/export/users/haochenj/src/gcc-bisect/master/master/r13-4727/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}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=20_util/to_chars/float16_c++23.cc --target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=20_util/to_chars/float16_c++23.cc --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="i386.exp=gcc.target/i386/pr64110.c --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="i386.exp=gcc.target/i386/pr64110.c --target_board='unix{-m32\ -march=cascadelake}'"

(Please do not reply to this email, for question about this report, contact me at haochen dot jiang at intel.com)