diff options
Diffstat (limited to 'llvm/include/llvm/IR/Constant.h')
| -rw-r--r-- | llvm/include/llvm/IR/Constant.h | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/llvm/include/llvm/IR/Constant.h b/llvm/include/llvm/IR/Constant.h index 2b6a6e4141b9..174e7364c524 100644 --- a/llvm/include/llvm/IR/Constant.h +++ b/llvm/include/llvm/IR/Constant.h @@ -53,6 +53,10 @@ public: /// Returns true if the value is one. bool isOneValue() const; + /// Return true if the value is not the one value, or, + /// for vectors, does not contain one value elements. + bool isNotOneValue() const; + /// Return true if this is the value that would be returned by /// getAllOnesValue. bool isAllOnesValue() const; @@ -64,7 +68,8 @@ public: /// Return true if the value is negative zero or null value. bool isZeroValue() const; - /// Return true if the value is not the smallest signed value. + /// Return true if the value is not the smallest signed value, or, + /// for vectors, does not contain smallest signed value elements. bool isNotMinSignedValue() const; /// Return true if the value is the smallest signed value. @@ -128,9 +133,10 @@ public: Constant *getAggregateElement(unsigned Elt) const; Constant *getAggregateElement(Constant *Elt) const; - /// If this is a splat vector constant, meaning that all of the elements have - /// the same value, return that value. Otherwise return 0. - Constant *getSplatValue() const; + /// If all elements of the vector constant have the same value, return that + /// value. Otherwise, return nullptr. Ignore undefined elements by setting + /// AllowUndefs to true. + Constant *getSplatValue(bool AllowUndefs = false) const; /// If C is a constant integer then return its value, otherwise C must be a /// vector of constant integers, all equal, and the common value is returned. @@ -188,6 +194,10 @@ public: return const_cast<Constant*>( static_cast<const Constant *>(this)->stripPointerCasts()); } + + /// Try to replace undefined constant C or undefined elements in C with + /// Replacement. If no changes are made, the constant C is returned. + static Constant *replaceUndefsWith(Constant *C, Constant *Replacement); }; } // end namespace llvm |