Regressions on releases/gcc-13 at commit r13-8500 vs commit r13-8496 on Linux/x86_64

[H.J. Lu]

Regressions on releases/gcc-13 at commit r13-8500 vs commit r13-8496 on Linux/x86_64
New failures:
FAIL: gcc.dg/lto/save-temps c_lto_save-temps_0.o-c_lto_save-temps_0.o link,  -O -flto -save-temps
FAIL: gcc.dg/lto/save-temps c_lto_save-temps_0.o-c_lto_save-temps_0.o link,  -O -flto -save-temps
FAIL: gcc.dg/torture/convert-dfp-2.c   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  (test for excess errors)
FAIL: gcc.dg/torture/convert-dfp.c   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  (test for excess errors)

New passes:
FAIL: gcc.dg/vect/vect-bic-bitmask-10.c -flto -ffat-lto-objects (test for excess errors)
FAIL: gcc.dg/vect/vect-bic-bitmask-11.c -flto -ffat-lto-objects (test for excess errors)
FAIL: g++.dg/opt/pr91838.C  -std=c++14  scan-assembler pxor\\s+%xmm0,\\s+%xmm0
FAIL: g++.dg/opt/pr91838.C  -std=c++17  scan-assembler pxor\\s+%xmm0,\\s+%xmm0
FAIL: g++.dg/opt/pr91838.C  -std=c++20  scan-assembler pxor\\s+%xmm0,\\s+%xmm0