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
..
Analysis	Revert the testcase from the previous reverted commit.	2011-01-11 09:20:44 +00:00
Archive
Assembler	Reject uses of unnamed_addr in declarations.	2011-01-13 01:30:30 +00:00
Bindings/Ocaml
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CodeGen	fix PR8961 - a fast isel miscompilation where we'd insert a new instruction	2011-01-14 00:01:01 +00:00
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Linker	Keep unnamed_addr when linking.	2011-01-13 05:12:34 +00:00
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MC	As far as I can tell, unified syntax uses c0-c15 instead of cr0-cr15 for mcr and friends.	2011-01-13 22:38:16 +00:00
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TableGen	Rename lisp-like functions as suggested by Gabor Greif as loooong time	2011-01-07 17:05:37 +00:00
Transforms	Move some shift transforms out of instcombine and into InstructionSimplify.	2011-01-14 00:37:45 +00:00
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