Regressions on trunk at revision 233626 vs revision 233620

[H.J. Lu ia32]

New failures:
FAIL: g++.dg/torture/pr42704.C   -O2 -flto -fno-use-linker-plugin -flto-partition=none  (internal compiler error)
FAIL: g++.dg/torture/pr42704.C   -O2 -flto -fno-use-linker-plugin -flto-partition=none  (test for excess errors)
FAIL: g++.dg/torture/pr42704.C   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  (internal compiler error)
FAIL: g++.dg/torture/pr42704.C   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  (test for excess errors)
FAIL: g++.dg/torture/pr42704.C   -O2  (internal compiler error)
FAIL: g++.dg/torture/pr42704.C   -O2  (test for excess errors)
FAIL: g++.dg/torture/pr42704.C   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (internal compiler error)
FAIL: g++.dg/torture/pr42704.C   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (test for excess errors)
FAIL: g++.dg/torture/pr42704.C   -O3 -g  (internal compiler error)
FAIL: g++.dg/torture/pr42704.C   -O3 -g  (test for excess errors)

New passes: