Regressions on master at commit r15-2212 vs commit r15-2210 on Linux/x86_64

[Haochen Jiang]

Regressions on master at commit r15-2212 vs commit r15-2210 on Linux/x86_64
New failures:

New passes:
FAIL: c-c++-common/dfp/convert-bfp-10.c execution test
FAIL: c-c++-common/dfp/convert-bfp-10.c  -std=c++14 execution test
FAIL: c-c++-common/dfp/convert-bfp-10.c  -std=c++17 execution test
FAIL: c-c++-common/dfp/convert-bfp-10.c  -std=c++20 execution test
FAIL: c-c++-common/dfp/convert-bfp-10.c  -std=c++98 execution test
FAIL: c-c++-common/dfp/convert-bfp-2.c execution test
FAIL: c-c++-common/dfp/convert-bfp-2.c  -std=c++14 execution test
FAIL: c-c++-common/dfp/convert-bfp-2.c  -std=c++17 execution test
FAIL: c-c++-common/dfp/convert-bfp-2.c  -std=c++20 execution test
FAIL: c-c++-common/dfp/convert-bfp-2.c  -std=c++98 execution test
FAIL: c-c++-common/dfp/convert-bfp-6.c execution test
FAIL: c-c++-common/dfp/convert-bfp-6.c  -std=gnu++14 execution test
FAIL: c-c++-common/dfp/convert-bfp-6.c  -std=gnu++17 execution test
FAIL: c-c++-common/dfp/convert-bfp-6.c  -std=gnu++20 execution test
FAIL: c-c++-common/dfp/convert-bfp-6.c  -std=gnu++98 execution test
FAIL: gcc.dg/lto/save-temps c_lto_save-temps_0.o-c_lto_save-temps_0.o link,  -O -flto -save-temps