[Bug target/59588] Odd codes in ix86_option_override_internal

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59588

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
-march=i686 is also ignored:

[hjl@gnu-6 gcc]$ gcc -m32 -S /tmp/t.c -march=i686
/tmp/t.c:2:2: error: #error "bad"
 #error "bad"
  ^
[hjl@gnu-6 gcc]$