56 Commits

Author	SHA1	Message	Date
Chris Lattner	249da5cb73	implement a simple instcombine xform that has been in the ... readme forever. llvm-svn: 94318	2010-01-23 18:49:30 +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	9da1cb243b	optimize cttz and ctlz when we can prove something about the ... leading/trailing bits. Patch by Alastair Lynn! llvm-svn: 92706	2010-01-05 07:23:56 +00:00
Chris Lattner	8330daf733	add a few trivial instcombines for llvm.powi. ... llvm-svn: 92383	2010-01-01 01:52:15 +00:00
Chris Lattner	1cc4cca193	add testcases for the foo_with_overflow op xforms added recently and ... fix bugs exposed by the tests. Testcases from Alastair Lynn! llvm-svn: 90056	2009-11-29 02:57:29 +00:00
Chris Lattner	39c07b2eef	if a 'with overflow' intrinsic just has the normal result used, simplify ... it to a normal binop. Patch by Alastair Lynn, testcase by me. llvm-svn: 86524	2009-11-09 07:07:56 +00:00