Evan Cheng d158fba3e4 Add a peephole optimization to optimize pairs of bitcasts. e.g. ... v2 = bitcast v1 ... v3 = bitcast v2 ... = v3 => v2 = bitcast v1 ... = v1 if v1 and v3 are of in the same register class. bitcast between i32 and fp (and others) are often not nops since they are in different register classes. These bitcast instructions are often left because they are in different basic blocks and cannot be eliminated by dag combine. rdar://9104514 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127668 91177308-0d34-0410-b5e6-96231b3b80d8		2011-03-15 05:13:13 +00:00
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Analysis	Propagate SCEV no-wrap flags whenever possible.	2011-03-15 00:37:00 +00:00
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CodeGen	Add a peephole optimization to optimize pairs of bitcasts. e.g.	2011-03-15 05:13:13 +00:00
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FrontendC	Add a RUN line to the test case to make it functional. <rdar://problem/9055247>	2011-03-09 04:02:40 +00:00
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FrontendObjC	Testcase for r127301.	2011-03-09 01:05:00 +00:00
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MC	Basic sanity checks to ensure that 2- and 3-byte	2011-03-15 01:32:46 +00:00
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Transforms	PR9450: Make switch optimization in SimplifyCFG not dependent on the ordering	2011-03-15 02:23:35 +00:00
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