Regressions on trunk at revision 266387 vs revision 266378

[H.J. Lu (Intel64)]

New failures:
FAIL: gcc.c-torture/execute/20041011-1.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  (test for excess errors)
FAIL: gcc.c-torture/execute/20041011-1.c   -O2  (test for excess errors)
FAIL: gcc.c-torture/execute/20041011-1.c   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (test for excess errors)
FAIL: gcc.c-torture/execute/20041011-1.c   -O3 -g  (test for excess errors)
FAIL: gcc.dg/guality/pr41447-1.c   -Os  -DPREVENT_OPTIMIZATION  execution test
FAIL: gcc.target/i386/pr22076.c scan-assembler-not movl
FAIL: gcc.target/i386/pr81563.c scan-assembler-times movl[\\t ]*-4\\(%ebp\\),[\\t ]*%edi 1
FAIL: gcc.target/i386/pr81563.c scan-assembler-times movl[\\t ]*-8\\(%ebp\\),[\\t ]*%esi 1
FAIL: libgomp.c++/../libgomp.c-c++-common/for-14.c (test for excess errors)
FAIL: libgomp.c/../libgomp.c-c++-common/for-14.c (test for excess errors)
FAIL: libgomp.c++/../libgomp.c-c++-common/for-15.c (test for excess errors)
FAIL: libgomp.c/../libgomp.c-c++-common/for-15.c (test for excess errors)
FAIL: libgomp.c++/../libgomp.c-c++-common/for-1.c (test for excess errors)
FAIL: libgomp.c/../libgomp.c-c++-common/for-1.c (test for excess errors)
FAIL: libgomp.c++/../libgomp.c-c++-common/for-2.c (test for excess errors)
FAIL: libgomp.c/../libgomp.c-c++-common/for-2.c (test for excess errors)
FAIL: libgomp.c++/../libgomp.c-c++-common/for-3.c (test for excess errors)
FAIL: libgomp.c/../libgomp.c-c++-common/for-3.c (test for excess errors)
FAIL: libgomp.c++/../libgomp.c-c++-common/for-5.c (test for excess errors)
FAIL: libgomp.c/../libgomp.c-c++-common/for-5.c (test for excess errors)
FAIL: libgomp.c++/../libgomp.c-c++-common/for-6.c (test for excess errors)
FAIL: libgomp.c/../libgomp.c-c++-common/for-6.c (test for excess errors)

New passes:
FAIL: gcc.target/i386/avx512dq-concatv2si-1.c scan-assembler-times vpinsrd[^\n\r]*\\$1[^\n\r]*%xmm16[^\n\r]*%xmm3 2
FAIL: gcc.target/i386/avx512dq-concatv2si-1.c scan-assembler vpunpckldq[^\n\r]*%xmm17[^\n\r]*%xmm16[^\n\r]*%xmm3
FAIL: gcc.target/i386/avx512vl-concatv2si-1.c scan-assembler vpunpckldq[^\n\r]*%xmm17[^\n\r]*%xmm16[^\n\r]*%xmm3