Regressions on master at commit r15-2764 vs commit r15-2756 on Linux/x86_64

[Haochen Jiang]

Regressions on master at commit r15-2764 vs commit r15-2756 on Linux/x86_64
New failures:
FAIL: gcc.c-torture/execute/pr57344-4.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  (internal compiler error: in convert_insn, at config/i386/i386-features.cc:1502)
FAIL: gcc.c-torture/execute/pr57344-4.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  (test for excess errors)
FAIL: gcc.c-torture/execute/pr57344-4.c   -O2  (internal compiler error: in convert_insn, at config/i386/i386-features.cc:1502)
FAIL: gcc.c-torture/execute/pr57344-4.c   -O2  (test for excess errors)
FAIL: gcc.c-torture/execute/pr57344-4.c   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (internal compiler error: in convert_insn, at config/i386/i386-features.cc:1502)
FAIL: gcc.c-torture/execute/pr57344-4.c   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (test for excess errors)
FAIL: gcc.c-torture/execute/pr57344-4.c   -O3 -g  (internal compiler error: in convert_insn, at config/i386/i386-features.cc:1502)
FAIL: gcc.c-torture/execute/pr57344-4.c   -O3 -g  (test for excess errors)
FAIL: gcc.target/i386/sse2-stv-2.c scan-assembler-not ax
FAIL: g++.dg/other/sse2-pr85572-1.C  -std=gnu++17  scan-assembler-times \\mpsrlq\\M 1
FAIL: g++.dg/other/sse2-pr85572-1.C  -std=gnu++17  scan-assembler-times \\mpsrlq\\M 1
FAIL: g++.dg/other/sse2-pr85572-1.C  -std=gnu++17  scan-assembler-times \\mpsubq\\M 2
FAIL: g++.dg/other/sse2-pr85572-1.C  -std=gnu++17  scan-assembler-times \\mpsubq\\M 2
FAIL: g++.dg/other/sse2-pr85572-1.C  -std=gnu++17  scan-assembler-times \\mpxor\\M 2
FAIL: g++.dg/other/sse2-pr85572-1.C  -std=gnu++17  scan-assembler-times \\mpxor\\M 2
FAIL: g++.dg/other/sse2-pr85572-1.C  -std=gnu++26  scan-assembler-times \\mpsrlq\\M 1
FAIL: g++.dg/other/sse2-pr85572-1.C  -std=gnu++26  scan-assembler-times \\mpsrlq\\M 1
FAIL: g++.dg/other/sse2-pr85572-1.C  -std=gnu++26  scan-assembler-times \\mpsubq\\M 2
FAIL: g++.dg/other/sse2-pr85572-1.C  -std=gnu++26  scan-assembler-times \\mpsubq\\M 2
FAIL: g++.dg/other/sse2-pr85572-1.C  -std=gnu++26  scan-assembler-times \\mpxor\\M 2
FAIL: g++.dg/other/sse2-pr85572-1.C  -std=gnu++26  scan-assembler-times \\mpxor\\M 2
FAIL: g++.dg/other/sse2-pr85572-1.C  -std=gnu++98  scan-assembler-times \\mpsrlq\\M 1
FAIL: g++.dg/other/sse2-pr85572-1.C  -std=gnu++98  scan-assembler-times \\mpsrlq\\M 1
FAIL: g++.dg/other/sse2-pr85572-1.C  -std=gnu++98  scan-assembler-times \\mpsubq\\M 2
FAIL: g++.dg/other/sse2-pr85572-1.C  -std=gnu++98  scan-assembler-times \\mpsubq\\M 2
FAIL: g++.dg/other/sse2-pr85572-1.C  -std=gnu++98  scan-assembler-times \\mpxor\\M 2
FAIL: g++.dg/other/sse2-pr85572-1.C  -std=gnu++98  scan-assembler-times \\mpxor\\M 2

New passes:
FAIL: gcc.dg/lto/save-temps c_lto_save-temps_0.o-c_lto_save-temps_0.o link,  -O -flto -save-temps