4 Commits

Author	SHA1	Message	Date
Dan Gohman	be34c35f32	Re-implement the main strength-reduction portion of LoopStrengthReduction. ... This new version is much more aggressive about doing "full" reduction in cases where it reduces register pressure, and also more aggressive about rewriting induction variables to count down (or up) to zero when doing so reduces register pressure. It currently uses fairly simplistic algorithms for finding reuse opportunities, but it introduces a new framework allows it to combine multiple strategies at once to form hybrid solutions, instead of doing all full-reduction or all base+index. llvm-svn: 94061	2010-01-21 02:09:26 +00:00
David Greene	73ad44c6b6	Use FileCheck and set nounwind on calls. ... llvm-svn: 90790	2009-12-07 19:40:26 +00:00
Dan Gohman	c2979de134	Fix this test - there don't appear to be any actual Reload Reuses ... in this testcase. llvm-svn: 88998	2009-11-16 23:49:55 +00:00
David Greene	6469fa6824	Support spill comments. ... Have the asm printer emit a comment if an instruction is a spill or reload and have the spiller mark copies it introdues so the asm printer can also annotate those. llvm-svn: 88911	2009-11-16 15:12:23 +00:00