Regressions on trunk at revision 182115 vs revision 182097

[H.J. Lu ia32 Core 2/i7]

New failures:

New passes:
FAIL: gcc.dg/guality/vla-1.c  -O2 -flto -fno-use-linker-plugin -flto-partition=none  line 17 sizeof (a) == 6
FAIL: gcc.dg/guality/vla-1.c  -O2 -flto -fno-use-linker-plugin -flto-partition=none  line 24 sizeof (a) == 17 * sizeof (short)
FAIL: gcc.dg/guality/vla-1.c  -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  line 17 sizeof (a) == 6
FAIL: gcc.dg/guality/vla-1.c  -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  line 24 sizeof (a) == 17 * sizeof (short)
FAIL: gcc.dg/guality/vla-2.c  -O2 -flto -fno-use-linker-plugin -flto-partition=none  line 16 sizeof (a) == 5 * sizeof (int)
FAIL: gcc.dg/guality/vla-2.c  -O2 -flto -fno-use-linker-plugin -flto-partition=none  line 25 sizeof (a) == 6 * sizeof (int)
FAIL: gcc.dg/guality/vla-2.c  -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  line 16 sizeof (a) == 5 * sizeof (int)
FAIL: gcc.dg/guality/vla-2.c  -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  line 25 sizeof (a) == 6 * sizeof (int)