Regressions on trunk at revision 275501 vs revision 275396

[H.J. Lu (Intel64 AVX)]

New failures:
FAIL: 23_containers/span/get_neg.cc (test for excess errors)
FAIL: 23_containers/span/get_neg.cc (test for excess errors)
FAIL: gcc.dg/tree-prof/merge_block.c scan-tree-dump-times optimized "if " 0
FAIL: gcc.dg/tree-prof/val-prof-1.c scan-tree-dump-times optimized "if " 0
FAIL: gcc.dg/tree-prof/val-prof-6.c scan-tree-dump-times optimized "calloc" 1

New passes:
FAIL: gcc.dg/ira-loop-pressure.c scan-rtl-dump loop2_invariant "Decided to move invariant"
FAIL: gcc.dg/plugin/location-overflow-test-pr83173.c -fplugin=./location_overflow_plugin.so  scan-file-not # (?!1 [^\r\n]+location-overflow-test-pr83173-1.h" 1)[0-9]+ [^\r\n]+location-overflow-test-pr83173-1.h"
FAIL: gcc.dg/plugin/location-overflow-test-pr83173.c -fplugin=./location_overflow_plugin.so  scan-file-not # (?!1 [^\r\n]+location-overflow-test-pr83173-1.h" 1)[0-9]+ [^\r\n]+location-overflow-test-pr83173-1.h"
FAIL: gcc.dg/plugin/location-overflow-test-pr83173.c -fplugin=./location_overflow_plugin.so  scan-file-not # (?!1 [^\r\n]+location-overflow-test-pr83173-1.h" 1)[0-9]+ [^\r\n]+location-overflow-test-pr83173-1.h"
FAIL: gcc.dg/torture/matrix-1.c   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gcc.dg/torture/matrix-1.c   -O3 -g  execution test
FAIL: gcc.dg/torture/matrix-5.c   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gcc.dg/torture/matrix-5.c   -O3 -g  execution test
FAIL: g++.dg/ubsan/pr59415.C   -O2 -flto -fno-use-linker-plugin -flto-partition=none  (test for excess errors)
FAIL: g++.dg/ubsan/pr59415.C   -O2 -flto -fno-use-linker-plugin -flto-partition=none  (test for excess errors)
FAIL: g++.dg/ubsan/pr59415.C   -O2 -flto -fno-use-linker-plugin -flto-partition=none  (test for excess errors)
FAIL: g++.dg/ubsan/pr59415.C   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  (test for excess errors)
FAIL: g++.dg/ubsan/pr59415.C   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  (test for excess errors)
FAIL: g++.dg/ubsan/pr59415.C   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  (test for excess errors)
FAIL: gfortran.dg/coarray_41.f90   -O3 -g  execution test
FAIL: gfortran.dg/direct_io_10.f   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/direct_io_10.f   -O3 -g  execution test