Regressions on native/master at commit r15-5015 vs commit r15-5009 on Linux/x86_64

[Haochen Jiang]

Regressions on master at commit r15-5015 vs commit r15-5009 on Linux/x86_64
New failures:

New passes:
FAIL: gcc.dg/gomp/max_vf-1.c scan-tree-dump-times ompexp "\\+ 16" 1
FAIL: gcc.dg/gomp/max_vf-1.c scan-tree-dump-times ompexp "\\+ 16" 1
FAIL: gcc.dg/gomp/max_vf-1.c scan-tree-dump-times ompexp "\\* 16" 2
FAIL: gcc.dg/gomp/max_vf-1.c scan-tree-dump-times ompexp "\\* 16" 2
FAIL: gcc.dg/gomp/max_vf-1.c scan-tree-dump-times ompexp "__builtin_GOMP_parallel_loop_nonmonotonic_dynamic \\(.*, 16, 0\\);" 1
FAIL: gcc.dg/gomp/max_vf-1.c scan-tree-dump-times ompexp "__builtin_GOMP_parallel_loop_nonmonotonic_dynamic \\(.*, 16, 0\\);" 1
FAIL: gcc.target/i386/pr116725.c (test for excess errors)
FAIL: gcc.target/i386/pr116725.c (test for excess errors)