Regressions on master at commit r15-3509 vs commit r15-3507 on Linux/i686

[Haochen Jiang]

Regressions on master at commit r15-3509 vs commit r15-3507 on Linux/i686
New failures:
FAIL: gcc.dg/vect/slp-12a.c -flto -ffat-lto-objects  scan-tree-dump-times vect "vectorizing stmts using SLP" 1
FAIL: gcc.dg/vect/slp-12a.c scan-tree-dump-times vect "vectorizing stmts using SLP" 1
FAIL: gcc.dg/vect/slp-19c.c -flto -ffat-lto-objects  scan-tree-dump-times vect "vectorizing stmts using SLP" 1
FAIL: gcc.dg/vect/slp-19c.c scan-tree-dump-times vect "vectorizing stmts using SLP" 1
FAIL: gcc.target/i386/cond_op_fma_double-1.c scan-assembler-times vfmadd132pd[ \\t]+[^{\n]*%ymm[0-9]+{%k[1-7]}(?:\n|[ \\t]+#) 1
FAIL: gcc.target/i386/cond_op_fma_double-1.c scan-assembler-times vfmsub132pd[ \\t]+[^{\n]*%ymm[0-9]+{%k[1-7]}(?:\n|[ \\t]+#) 1
FAIL: gcc.target/i386/cond_op_fma_double-1.c scan-assembler-times vfnmadd132pd[ \\t]+[^{\n]*%ymm[0-9]+{%k[1-7]}(?:\n|[ \\t]+#) 1
FAIL: gcc.target/i386/cond_op_fma_double-1.c scan-assembler-times vfnmsub132pd[ \\t]+[^{\n]*%ymm[0-9]+{%k[1-7]}(?:\n|[ \\t]+#) 1
FAIL: gcc.target/i386/cond_op_fma__Float16-1.c scan-assembler-times vfmadd132ph[ \\t]+[^{\n]*%ymm[0-9]+{%k[1-7]}(?:\n|[ \\t]+#) 1
FAIL: gcc.target/i386/cond_op_fma__Float16-1.c scan-assembler-times vfmsub132ph[ \\t]+[^{\n]*%ymm[0-9]+{%k[1-7]}(?:\n|[ \\t]+#) 1
FAIL: gcc.target/i386/cond_op_fma__Float16-1.c scan-assembler-times vfnmadd132ph[ \\t]+[^{\n]*%ymm[0-9]+{%k[1-7]}(?:\n|[ \\t]+#) 1
FAIL: gcc.target/i386/cond_op_fma__Float16-1.c scan-assembler-times vfnmsub132ph[ \\t]+[^{\n]*%ymm[0-9]+{%k[1-7]}(?:\n|[ \\t]+#) 1
FAIL: gcc.target/i386/cond_op_fma_float-1.c scan-assembler-times vfmadd132ps[ \\t]+[^{\n]*%ymm[0-9]+{%k[1-7]}(?:\n|[ \\t]+#) 1
FAIL: gcc.target/i386/cond_op_fma_float-1.c scan-assembler-times vfmsub132ps[ \\t]+[^{\n]*%ymm[0-9]+{%k[1-7]}(?:\n|[ \\t]+#) 1
FAIL: gcc.target/i386/cond_op_fma_float-1.c scan-assembler-times vfnmadd132ps[ \\t]+[^{\n]*%ymm[0-9]+{%k[1-7]}(?:\n|[ \\t]+#) 1
FAIL: gcc.target/i386/cond_op_fma_float-1.c scan-assembler-times vfnmsub132ps[ \\t]+[^{\n]*%ymm[0-9]+{%k[1-7]}(?:\n|[ \\t]+#) 1

New passes: