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Make SimplifyCFG simply depend upon TargetTransformInfo and pass it

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through as a reference rather than a pointer. There is always *some*
implementation of this available, so this simplifies code by not having
to test for whether it is available or not.

Further, it turns out there were piles of places where SimplifyCFG was
recursing and not passing down either TD or TTI. These are fixed to be
more pedantically consistent even though I don't have any particular
cases where it would matter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171691 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth
2013-01-07 03:53:25 +00:00
parent 6554666e00
commit 5f46c3c2e8
3 changed files with 54 additions and 48 deletions
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4
include/llvm/Transforms/Utils/Local.h
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@ -135,8 +135,8 @@ bool EliminateDuplicatePHINodes(BasicBlock *BB);
/// of the CFG. It returns true if a modification was made, possibly deleting
/// the basic block that was pointed to.
///
bool SimplifyCFG(BasicBlock *BB, const DataLayout *TD = 0,
const TargetTransformInfo *TTI = 0);
bool SimplifyCFG(BasicBlock *BB, const TargetTransformInfo &TTI,
const DataLayout *TD = 0);
/// FoldBranchToCommonDest - If this basic block is ONLY a setcc and a branch,
/// and if a predecessor branches to us and one of our successors, fold the