5 Commits

Author	SHA1	Message	Date
Dan Gohman	f241174421	Revert the addition of hasNoPointerOverflow to GEPOperator. ... Getelementptrs that are defined to wrap are virtually useless to optimization, and getelementptrs that are undefined on any kind of overflow are too restrictive -- it's difficult to ensure that all intermediate addresses are within bounds. I'm going to take a different approach. Remove a few optimizations that depended on this flag. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76437 91177308-0d34-0410-b5e6-96231b3b80d8	2009-07-20 17:43:30 +00:00
Chris Lattner	5e0d71877c	be more aggressive about transforming add -> or when the operands have no ... intersecting bits. This triggers all over the place, for example in lencode, with adds of stuff like: %tmp580 = mul i32 %tmp579, 2 %tmp582 = and i32 %b8, 1 and %tmp28 = shl i32 %abs.i, 1 %sign.0 = select i1 %tmp23, i32 1, i32 0 and %tmp344 = shl i32 %tmp343, 2 %tmp346 = and i32 %tmp96, 3 etc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51263 91177308-0d34-0410-b5e6-96231b3b80d8	2008-05-19 20:01:56 +00:00
Chris Lattner	f9d9e45225	Implement PR1795, an instcombine hack for forming GEPs with integer pointer arithmetic. ... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45745 91177308-0d34-0410-b5e6-96231b3b80d8	2008-01-08 07:23:51 +00:00
Reid Spencer	eb1d74e0c8	For PR1319: ... Remove && from the end of the lines to prevent tests from throwing run lines into the background. Also, clean up places where the same command is run multiple times by using a temporary file. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36142 91177308-0d34-0410-b5e6-96231b3b80d8	2007-04-16 17:36:08 +00:00
Chris Lattner	bc62f24a8c	new testcase ... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34918 91177308-0d34-0410-b5e6-96231b3b80d8	2007-03-05 00:01:38 +00:00