diff options
Diffstat (limited to 'llvm/include/llvm/Analysis/ScalarEvolution.h')
| -rw-r--r-- | llvm/include/llvm/Analysis/ScalarEvolution.h | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/llvm/include/llvm/Analysis/ScalarEvolution.h b/llvm/include/llvm/Analysis/ScalarEvolution.h index 858c1d5..8876e4e 100644 --- a/llvm/include/llvm/Analysis/ScalarEvolution.h +++ b/llvm/include/llvm/Analysis/ScalarEvolution.h @@ -1002,10 +1002,14 @@ public: /// (at every loop iteration). It is, at the same time, the minimum number /// of times S is divisible by 2. For example, given {4,+,8} it returns 2. /// If S is guaranteed to be 0, it returns the bitwidth of S. - LLVM_ABI uint32_t getMinTrailingZeros(const SCEV *S); + /// If \p CtxI is not nullptr, return a constant multiple valid at \p CtxI. + LLVM_ABI uint32_t getMinTrailingZeros(const SCEV *S, + const Instruction *CtxI = nullptr); - /// Returns the max constant multiple of S. - LLVM_ABI APInt getConstantMultiple(const SCEV *S); + /// Returns the max constant multiple of S. If \p CtxI is not nullptr, return + /// a constant multiple valid at \p CtxI. + LLVM_ABI APInt getConstantMultiple(const SCEV *S, + const Instruction *CtxI = nullptr); // Returns the max constant multiple of S. If S is exactly 0, return 1. LLVM_ABI APInt getNonZeroConstantMultiple(const SCEV *S); @@ -1525,8 +1529,10 @@ private: /// Return the Value set from which the SCEV expr is generated. ArrayRef<Value *> getSCEVValues(const SCEV *S); - /// Private helper method for the getConstantMultiple method. - APInt getConstantMultipleImpl(const SCEV *S); + /// Private helper method for the getConstantMultiple method. If \p CtxI is + /// not nullptr, return a constant multiple valid at \p CtxI. + APInt getConstantMultipleImpl(const SCEV *S, + const Instruction *Ctx = nullptr); /// Information about the number of times a particular loop exit may be /// reached before exiting the loop. |