Regressions on native/master at commit r15-1240 vs commit r15-1237 on Linux/x86_64

[Haochen Jiang]

Regressions on master at commit r15-1240 vs commit r15-1237 on Linux/x86_64
New failures:
FAIL: gcc.dg/vect/pr115385.c execution test
FAIL: gcc.dg/vect/pr115385.c execution test
FAIL: gcc.dg/vect/pr115385.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/pr115385.c -flto -ffat-lto-objects execution test
FAIL: gcc.target/i386/vect-strided-3.c scan-assembler-times movhps 2

New passes:
FAIL: gcc.dg/vect/pr103116-1.c -flto -ffat-lto-objects  scan-tree-dump vect "Data access with gaps requires scalar epilogue loop"
FAIL: gcc.dg/vect/pr103116-1.c -flto -ffat-lto-objects  scan-tree-dump vect "Data access with gaps requires scalar epilogue loop"
FAIL: gcc.dg/vect/pr103116-1.c scan-tree-dump vect "Data access with gaps requires scalar epilogue loop"
FAIL: gcc.dg/vect/pr103116-1.c scan-tree-dump vect "Data access with gaps requires scalar epilogue loop"
FAIL: gcc.dg/vect/slp-46.c -flto -ffat-lto-objects  scan-tree-dump-times vect "vectorizing stmts using SLP" 4
FAIL: gcc.dg/vect/slp-46.c -flto -ffat-lto-objects  scan-tree-dump-times vect "vectorizing stmts using SLP" 4
FAIL: gcc.dg/vect/slp-46.c scan-tree-dump-times vect "vectorizing stmts using SLP" 4
FAIL: gcc.dg/vect/slp-46.c scan-tree-dump-times vect "vectorizing stmts using SLP" 4