On Wed, Nov 16, 2016 at 8:22 PM, Aaron Sawdey
wrote:
> This patch adds a test to the cmpstrnsi pattern in i386.md so that it
> will bail out (FAIL) if neither of the strings is a constant string. It
> can only work as a proper strncmp if the length is not longer than both
> of the strings. This ch
On 11/16/2016 08:22 PM, Aaron Sawdey wrote:
I've also changed the pattern to indicate that operand 3 may
be clobbered (if it happens to be in cx already).
That part looks like a meaningless change since the pattern in that
define_expand is never used (there's a DONE at the end).
I don't thin
This patch adds a test to the cmpstrnsi pattern in i386.md so that it
will bail out (FAIL) if neither of the strings is a constant string. It
can only work as a proper strncmp if the length is not longer than both
of the strings. This change is required if expand_builtin_strncmp is
going to try exp
