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	Commit message (Collapse)	Author	Age	Files	Lines
*	Rename -disable-iv-rewrite to -enable-iv-rewrite=false in preparation for ↵	Andrew Trick	2011-09-12	1	-1/+1
\| \| \| \| \| \|	default change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139517 91177308-0d34-0410-b5e6-96231b3b80d8
*	indvars: LinearFunctionTestReplace for non-canonical IVs.	Andrew Trick	2011-07-18	1	-3/+2
\| \| \| \| \| \| \| \| \| \| \|	For -disable-iv-rewrite, perform LFTR without generating a new "canonical" induction variable. Instead find the "best" existing induction variable for use in the loop exit test and compute the final value of that IV for use in the new loop exit test. In short, convert to a simple eq/ne exit test as long as it's cheap to do so. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135420 91177308-0d34-0410-b5e6-96231b3b80d8
*	FileCheckify and prepare for -disable-iv-rewrite.	Andrew Trick	2011-06-28	1	-7/+11
\| \| \| \|	git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133998 91177308-0d34-0410-b5e6-96231b3b80d8
*	Avoid creating canonical induction variables for non-native types.	Andrew Trick	2011-03-18	1	-1/+1
\| \| \| \| \| \| \| \| \|	For example, on 32-bit architecture, don't promote all uses of the IV to 64-bits just because one use is a 64-bit cast. Alternate implementation of the patch by Arnaud de Grandmaison. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127884 91177308-0d34-0410-b5e6-96231b3b80d8
*	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	Dan Gohman	2009-09-11	1	-1/+1
\| \| \| \| \| \| \| \| \|	input filename so that opt doesn't print the input filename in the output so that grep lines in the tests don't unintentionally match strings in the input filename. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8
*	Use opt -S instead of piping bitcode output through llvm-dis.	Dan Gohman	2009-09-08	1	-1/+1
\| \| \| \|	git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81257 91177308-0d34-0410-b5e6-96231b3b80d8
*	Change these tests to feed the assembly files to opt directly, instead	Dan Gohman	2009-09-08	1	-1/+1
\| \| \| \| \| \| \|	of using llvm-as, now that opt supports this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81226 91177308-0d34-0410-b5e6-96231b3b80d8
*	Factor the code for collecting IV users out of LSR into an IVUsers class,	Dan Gohman	2009-05-12	1	-0/+90
	and generalize it so that it can be used by IndVarSimplify. Implement the base IndVarSimplify transformation code using IVUsers. This removes TestOrigIVForWrap and associated code, as ScalarEvolution now has enough builtin overflow detection and folding logic to handle all the same cases, and more. Run "opt -iv-users -analyze -disable-output" on your favorite loop for an example of what IVUsers does. This lets IndVarSimplify eliminate IV casts and compute trip counts in more cases. Also, this happens to finally fix the remaining testcases in PR1301. Now that IndVarSimplify is being more aggressive, it occasionally runs into the problem where ScalarEvolutionExpander's code for avoiding duplicate expansions makes it difficult to ensure that all expanded instructions dominate all the instructions that will use them. As a temporary measure, IndVarSimplify now uses a FixUsesBeforeDefs function to fix up instructions inserted by SCEVExpander. Fortunately, this code is contained, and can be easily removed once a more comprehensive solution is available. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71535 91177308-0d34-0410-b5e6-96231b3b80d8