Re: Reusing stack space for variables recorded during gimple lowering

2012-05-19 Thread Andrew Pinski
On Fri, May 18, 2012 at 10:18 PM, Andrew Jenner wrote: > I'm investigating the reason why the amount of stack used by some pieces of > code increased significantly since gcc 3.3. Notably, > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25505 has a testcase which went > up from 512 bytes to 20K betwe

Reusing stack space for variables recorded during gimple lowering

2012-05-18 Thread Andrew Jenner
I'm investigating the reason why the amount of stack used by some pieces of code increased significantly since gcc 3.3. Notably, http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25505 has a testcase which went up from 512 bytes to 20K between gcc 3.3 and 4.x, then back down to ~5K with later optimiz