Regressions on master at commit r12-4336 vs commit r12-4279 on Linux/x86_64

[H.J. Lu]

New failures:
FAIL: gcc.dg/tree-ssa/ldist-strlen-1.c execution test
FAIL: gcc.dg/tree-ssa/ldist-strlen-1.c execution test
FAIL: gcc.dg/tree-ssa/ldist-strlen-1.c execution test
FAIL: gcc.dg/tree-ssa/ldist-strlen-2.c execution test
FAIL: gcc.dg/tree-ssa/ldist-strlen-2.c execution test
FAIL: gcc.dg/tree-ssa/ldist-strlen-2.c execution test
FAIL: g++.dg/modules/xtreme-tr1_b.C -std=c++2a (internal compiler error)
FAIL: g++.dg/modules/xtreme-tr1_b.C -std=c++2a (test for excess errors)
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++14  scan-tree-dump-not optimized "goto"
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++14  scan-tree-dump-not optimized "goto"
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++14  scan-tree-dump-not optimized "goto"
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++14 (test for excess errors)
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++14 (test for excess errors)
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++14 (test for excess errors)
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++17  scan-tree-dump-not optimized "goto"
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++17  scan-tree-dump-not optimized "goto"
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++17  scan-tree-dump-not optimized "goto"
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++17 (test for excess errors)
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++17 (test for excess errors)
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++17 (test for excess errors)
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++2a  scan-tree-dump-not optimized "goto"
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++2a  scan-tree-dump-not optimized "goto"
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++2a  scan-tree-dump-not optimized "goto"
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++2a (test for excess errors)
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++2a (test for excess errors)
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++2a (test for excess errors)
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++98  scan-tree-dump-not optimized "goto"
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++98  scan-tree-dump-not optimized "goto"
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++98  scan-tree-dump-not optimized "goto"
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++98 (test for excess errors)
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++98 (test for excess errors)
FAIL: g++.dg/warn/Warray-bounds-16.C  -std=gnu++98 (test for excess errors)

New passes: