Regressions on trunk at revision 274749 vs revision 274692

[H.J. Lu (Intel64 -fpic -mcmodel=medium -mcmodel=large)]

New failures:
FAIL: gcc.dg/torture/pr53663-2.c   -O2  execution test
FAIL: gcc.dg/torture/pr53663-2.c   -O2  execution test
FAIL: gcc.dg/torture/pr53663-2.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  execution test
FAIL: gcc.dg/torture/pr53663-2.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  execution test
FAIL: gcc.dg/torture/pr53663-2.c   -O3 -g  execution test
FAIL: gcc.dg/torture/pr53663-2.c   -O3 -g  execution test
FAIL: gcc.dg/torture/pr53663-2.c   -Os  execution test
FAIL: gcc.dg/torture/pr53663-2.c   -Os  execution test
FAIL: gcc.dg/torture/pr53663-3.c   -O2  execution test
FAIL: gcc.dg/torture/pr53663-3.c   -O2  execution test
FAIL: gcc.dg/torture/pr53663-3.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  execution test
FAIL: gcc.dg/torture/pr53663-3.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  execution test
FAIL: gcc.dg/torture/pr53663-3.c   -O3 -g  execution test
FAIL: gcc.dg/torture/pr53663-3.c   -O3 -g  execution test
FAIL: gcc.dg/torture/pr53663-3.c   -Os  execution test
FAIL: gcc.dg/torture/pr53663-3.c   -Os  execution test
FAIL: gcc.target/i386/minmax-6.c scan-assembler-not rsp
FAIL: gcc.target/i386/minmax-6.c scan-assembler-not rsp
FAIL: gcc.target/i386/minmax-6.c scan-assembler-not rsp
FAIL: gcc.target/i386/minmax-7.c scan-assembler-not rsp
FAIL: gcc.target/i386/minmax-7.c scan-assembler-not rsp

New passes:
FAIL: compiler driver --help=ada option(s): "^ +-.*[^:.]$" absent from output: "  -fdump-scos                 Dump Source Coverage Obligations"
FAIL: compiler driver --help=ada option(s): "^ +-.*[^:.]$" absent from output: "  -fdump-scos                 Dump Source Coverage Obligations"
FAIL: compiler driver --help=ada option(s): "^ +-.*[^:.]$" absent from output: "  -fdump-scos                 Dump Source Coverage Obligations"