Duncan Sands c43cee3fbb Move some shift transforms out of instcombine and into InstructionSimplify. ... While there, I noticed that the transform "undef >>a X -> undef" was wrong. For example if X is 2 then the top two bits must be equal, so the result can not be anything. I fixed this in the constant folder as well. Also, I made the transform for "X << undef" stronger: it now folds to undef always, even though X might be zero. This is in accordance with the LangRef, but I must admit that it is fairly aggressive. Also, I added "i32 X << 32 -> undef" following the LangRef and the constant folder, likewise fairly aggressive. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123417 91177308-0d34-0410-b5e6-96231b3b80d8		2011-01-14 00:37:45 +00:00
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InstCombine	Move some shift transforms out of instcombine and into InstructionSimplify.	2011-01-14 00:37:45 +00:00
Instrumentation
IPO	Improve the accuracy of the inlining heuristic looking for the	2011-01-04 19:01:54 +00:00
Scalar	Fix whitespace.	2011-01-13 20:59:44 +00:00
Utils	Fix a non-deterministic loop in llvm::MergeBlockIntoPredecessor.	2011-01-11 22:54:38 +00:00
Makefile