4 Commits

Author	SHA1	Message	Date
Chris Lattner	8c92b57df9	tidy up some stuff duncan pointed out. ... llvm-svn: 93007	2010-01-08 17:48:19 +00:00
Chris Lattner	54f4e39956	optimize comparisons against cttz/ctlz/ctpop, patch by Alastair Lynn! ... llvm-svn: 92745	2010-01-05 18:09:56 +00:00
Chris Lattner	a751d09c08	Truncate GEP indexes larger than the pointer size down to pointer size ... when doing this transform if the GEP is not inbounds. No testcase because it is very difficult to trigger this: instcombine already canonicalizes GEP indices to pointer size, so it relies specific permutations of the instcombine worklist. Thanks to Duncan for pointing this possible problem out. llvm-svn: 92495	2010-01-04 18:57:15 +00:00
Chris Lattner	2188e40e4c	split instcombine of compares (visit[FI]Cmp) out to ... a new InstCombineCompares.cpp file. llvm-svn: 92467	2010-01-04 07:37:31 +00:00