Regressions on trunk at revision 263652 vs revision 263644

[H.J. Lu (x32 -fpic)]

New failures:
FAIL: gcc.dg/guality/pr41616-1.c   -O2  -DPREVENT_OPTIMIZATION  execution test
FAIL: gcc.dg/guality/pr41616-1.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  -DPREVENT_OPTIMIZATION execution test
FAIL: gcc.dg/guality/pr41616-1.c   -O3 -g  -DPREVENT_OPTIMIZATION  execution test
FAIL: gcc.dg/guality/pr43051-1.c   -Os  -DPREVENT_OPTIMIZATION  line 34 c == &a[0]
FAIL: gcc.dg/guality/pr43051-1.c   -Os  -DPREVENT_OPTIMIZATION  line 39 c == &a[0]

New passes:
FAIL: c-c++-common/torture/builtin-arith-overflow-17.c   -O0  execution test
FAIL: c-c++-common/torture/builtin-arith-overflow-17.c   -O0  execution test
FAIL: c-c++-common/torture/builtin-arith-overflow-17.c   -O2  execution test
FAIL: c-c++-common/torture/builtin-arith-overflow-17.c   -O2  execution test
FAIL: c-c++-common/torture/builtin-arith-overflow-17.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  execution test
FAIL: c-c++-common/torture/builtin-arith-overflow-17.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  execution test
FAIL: c-c++-common/torture/builtin-arith-overflow-p-17.c   -O0  execution test
FAIL: c-c++-common/torture/builtin-arith-overflow-p-17.c   -O0  execution test
FAIL: c-c++-common/torture/builtin-arith-overflow-p-17.c   -O2  execution test
FAIL: c-c++-common/torture/builtin-arith-overflow-p-17.c   -O2  execution test
FAIL: c-c++-common/torture/builtin-arith-overflow-p-17.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  execution test
FAIL: c-c++-common/torture/builtin-arith-overflow-p-17.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  execution test
FAIL: gcc.target/i386/20040112-1.c scan-assembler testb