Regressions on trunk at revision 270072 vs revision 270053

[H.J. Lu (Intel64 AVX512)]

New failures:
FAIL: gcc.target/i386/shrink_wrap_1.c scan-rtl-dump pro_and_epilogue "Performing shrink-wrapping"

New passes:
FAIL: gcc.dg/guality/sra-1.c   -O2  -DPREVENT_OPTIMIZATION  line 43 a.i == 4
FAIL: gcc.dg/guality/sra-1.c   -O2  -DPREVENT_OPTIMIZATION  line 43 a.i == 4
FAIL: gcc.dg/guality/sra-1.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  -DPREVENT_OPTIMIZATION line 43 a.i == 4
FAIL: gcc.dg/guality/sra-1.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  -DPREVENT_OPTIMIZATION line 43 a.i == 4
FAIL: gcc.dg/guality/sra-1.c   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  -DPREVENT_OPTIMIZATION line 43 a.i == 4
FAIL: gcc.dg/guality/sra-1.c   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  -DPREVENT_OPTIMIZATION line 43 a.i == 4
FAIL: gcc.dg/guality/sra-1.c   -O3 -g  -DPREVENT_OPTIMIZATION  line 43 a.i == 4
FAIL: gcc.dg/guality/sra-1.c   -O3 -g  -DPREVENT_OPTIMIZATION  line 43 a.i == 4
FAIL: gcc.dg/guality/sra-1.c   -Os  -DPREVENT_OPTIMIZATION  line 43 a.i == 4
FAIL: gcc.dg/guality/sra-1.c   -Os  -DPREVENT_OPTIMIZATION  line 43 a.i == 4