Regressions on trunk at revision 183435 vs revision 183429

[Kirill Yukhin [ia32 Core i7 AVX]]

New failures:
FAIL: g++.dg/torture/pr51344.C  -O0  (test for excess errors)
FAIL: g++.dg/torture/pr51344.C  -O1  (test for excess errors)
FAIL: g++.dg/torture/pr51344.C  -O2  (test for excess errors)
FAIL: g++.dg/torture/pr51344.C  -O2 -flto -fno-use-linker-plugin -flto-partition=none  (test for excess errors)
FAIL: g++.dg/torture/pr51344.C  -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  (test for excess errors)
FAIL: g++.dg/torture/pr51344.C  -O3 -fomit-frame-pointer  (test for excess errors)
FAIL: g++.dg/torture/pr51344.C  -O3 -g  (test for excess errors)
FAIL: g++.dg/torture/pr51344.C  -Os  (test for excess errors)

New passes:
FAIL: libitm.c/memcpy-1.c execution test
FAIL: libitm.c/memset-1.c execution test