On 1/5/07, David Edelsohn <[EMAIL PROTECTED]> wrote:
>>>>> Steven Bosscher writes:Steven> What does the code look like if you compile with -O2 -fgcse-sm? Yep. Mark and I recently discussed whether gcse-sm should be enabled by default at some optimization level. We're hiding performance from GCC users.
The problem with it used to be that it was just very broken. When I fixed PR24257, it was still not possible to bootstrap with gcse store motion enabled. Putting someone on fixing tree load&store motion is probably more useful anyway, if you're going to do load&store motion for performance. In RTL, we can't move loads and stores that are not simple loads or stores (i.e. reg <- mem, or mem <- reg). There are two very popular targets where this is the common case ;-) Gr. Steven
