Sanjoy Das cd5029d001 [SCEV] Unify getUnsignedRange and getSignedRange ... Summary: This removes some duplicated code, and also helps optimization: e.g. in the test case added, `%idx ULT 128` in `@x` is not currently optimized to `true` by `-indvars` but will be, after this change. The only functional change in ths commit is that for add recurrences, ScalarEvolution::getRange will be more aggressive -- computing the unsigned (resp. signed) range for a SCEVAddRecExpr will now look at the NSW (resp. NUW) bits and check for signed (resp. unsigned) overflow. This can be a strict improvement in some cases (such as the attached test case), and should be no worse in other cases. Reviewers: atrick, nlewycky Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D8142 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231709 91177308-0d34-0410-b5e6-96231b3b80d8		2015-03-09 21:43:43 +00:00
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llvm	[SCEV] Unify getUnsignedRange and getSignedRange	2015-03-09 21:43:43 +00:00
llvm-c	Restore LLVMLinkModules C API until it is properly deprecated.	2015-03-02 18:59:38 +00:00