Regressions on trunk at revision 229910 vs revision 229795

[H.J. Lu ia32]

New failures:
FAIL: compiler driver --help=c++ option(s): "^ +-.*[^:.]$" absent from output: "  -Wplacement-new             Warn for placement new expressions with undefined behavior"
FAIL: compiler driver --help=warnings option(s): "^ +-.*[^:.]$" absent from output: "  -Wplacement-new             Warn for placement new expressions with undefined behavior"
FAIL: gcc.dg/graphite/fuse-1.c scan-tree-dump-times forwprop4 "gimple_simplified to[^\\n]*\\^ 12" 1
FAIL: gcc.target/i386/iamcu/test_passing_floats.c execution,  -O3 -g 
FAIL: g++.dg/lto/pr68057 cp_lto_pr68057_0.o-cp_lto_pr68057_1.o execute -O0 -flto -flto-partition=1to1 -fno-use-linker-plugin 
FAIL: g++.dg/lto/pr68057 cp_lto_pr68057_0.o-cp_lto_pr68057_1.o execute -O0 -flto -flto-partition=none -fuse-linker-plugin
FAIL: g++.dg/lto/pr68057 cp_lto_pr68057_0.o-cp_lto_pr68057_1.o execute -O0 -flto -fuse-linker-plugin -fno-fat-lto-objects 
FAIL: g++.dg/lto/pr68057 cp_lto_pr68057_0.o-cp_lto_pr68057_1.o execute -O2 -flto -flto-partition=1to1 -fno-use-linker-plugin 
FAIL: g++.dg/lto/pr68057 cp_lto_pr68057_0.o-cp_lto_pr68057_1.o execute -O2 -flto -flto-partition=none -fuse-linker-plugin -fno-fat-lto-objects 
FAIL: g++.dg/lto/pr68057 cp_lto_pr68057_0.o-cp_lto_pr68057_1.o execute -O2 -flto -fuse-linker-plugin
FAIL: g++.dg/warn/Wplacement-new-size.C  -std=gnu++11 (test for excess errors)
FAIL: g++.dg/warn/Wplacement-new-size.C  -std=gnu++14 (test for excess errors)
FAIL: g++.dg/warn/Wplacement-new-size.C  -std=gnu++98 (test for excess errors)

New passes: