Regressions on master at commit r11-6484 vs commit r11-6467 on Linux/i686

[H.J. Lu]

New failures:

New passes:
FAIL: compiler driver --help=go option(s): "^ +-.*[^:.]$" absent from output: "  -fgo-embedcfg=<file>        List embedded files via go:embed"
FAIL: gcc.target/i386/sse2-mmx-pextrw.c execution test