diff options
Diffstat (limited to 'include/llvm/Instruction.h')
| -rw-r--r-- | include/llvm/Instruction.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/include/llvm/Instruction.h b/include/llvm/Instruction.h index a386d1de42..5512dcc9e6 100644 --- a/include/llvm/Instruction.h +++ b/include/llvm/Instruction.h @@ -281,6 +281,16 @@ public: /// ignores the SubclassOptionalData flags, which specify conditions /// under which the instruction's result is undefined. bool isIdenticalToWhenDefined(const Instruction *I) const; + + /// When checking for operation equivalence (using isSameOperationAs) it is + /// sometimes useful to ignore certain attributes. + enum OperationEquivalenceFlags { + /// Check for equivalence ignoring load/store alignment. + CompareIgnoringAlignment = 1<<0, + /// Check for equivalence treating a type and a vector of that type + /// as equivalent. + CompareUsingScalarTypes = 1<<1 + }; /// This function determines if the specified instruction executes the same /// operation as the current one. This means that the opcodes, type, operand @@ -290,7 +300,7 @@ public: /// @returns true if the specified instruction is the same operation as /// the current one. /// @brief Determine if one instruction is the same operation as another. - bool isSameOperationAs(const Instruction *I) const; + bool isSameOperationAs(const Instruction *I, unsigned flags = 0) const; /// isUsedOutsideOfBlock - Return true if there are any uses of this /// instruction in blocks other than the specified block. Note that PHI nodes |