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| author | Dan Gohman <gohman@apple.com> | 2008-02-25 21:11:39 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2008-02-25 21:11:39 +0000 |
| commit | 2e68b6f52d0979575b2f02ed29717d907ba0684c (patch) | |
| tree | a234e94ceb3bed76294f3cda0344dff46ff6ec32 /include/llvm/CodeGen | |
| parent | 63602b8a69b2729f0789cd3c920aceef0ece64cb (diff) | |
Convert MaskedValueIsZero and all its users to use APInt. Also add
a SignBitIsZero function to simplify a common use case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47561 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/CodeGen')
| -rw-r--r-- | include/llvm/CodeGen/SelectionDAG.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/llvm/CodeGen/SelectionDAG.h b/include/llvm/CodeGen/SelectionDAG.h index c40295891c..cdb15a91cd 100644 --- a/include/llvm/CodeGen/SelectionDAG.h +++ b/include/llvm/CodeGen/SelectionDAG.h @@ -555,10 +555,14 @@ public: SDOperand FoldSetCC(MVT::ValueType VT, SDOperand N1, SDOperand N2, ISD::CondCode Cond); + /// SignBitIsZero - Return true if the sign bit of Op is known to be zero. We + /// use this predicate to simplify operations downstream. + bool SignBitIsZero(SDOperand Op, unsigned Depth = 0) const; + /// MaskedValueIsZero - Return true if 'Op & Mask' is known to be zero. We /// use this predicate to simplify operations downstream. Op and Mask are /// known to be the same type. - bool MaskedValueIsZero(SDOperand Op, uint64_t Mask, unsigned Depth = 0) + bool MaskedValueIsZero(SDOperand Op, const APInt &Mask, unsigned Depth = 0) const; /// ComputeMaskedBits - Determine which of the bits specified in Mask are |