Add doxygen comments to AliasAnalysis class

llvm-svn: 3475
This commit is contained in:
Chris Lattner 2002-08-22 21:22:25 +00:00
parent e46f5528a3
commit 743e034b0c
1 changed files with 25 additions and 25 deletions

View File

@ -21,41 +21,41 @@ class Instruction;
struct AliasAnalysis { struct AliasAnalysis {
// Alias analysis result - Either we know for sure that it does not alias, we /// Alias analysis result - Either we know for sure that it does not alias, we
// know for sure it must alias, or we don't know anything: The two pointers /// know for sure it must alias, or we don't know anything: The two pointers
// _might_ alias. This enum is designed so you can do things like: /// _might_ alias. This enum is designed so you can do things like:
// if (AA.alias(P1, P2)) { ... } /// if (AA.alias(P1, P2)) { ... }
// to check to see if two pointers might alias. /// to check to see if two pointers might alias.
// ///
enum Result { NoAlias = 0, MayAlias = 1, MustAlias = 2 }; enum Result { NoAlias = 0, MayAlias = 1, MustAlias = 2 };
// alias - The main low level interface to the alias analysis implementation. /// alias - The main low level interface to the alias analysis implementation.
// Returns a Result indicating whether the two pointers are aliased to each /// Returns a Result indicating whether the two pointers are aliased to each
// other. This is the interface that must be implemented by specific alias /// other. This is the interface that must be implemented by specific alias
// analysis implementations. /// analysis implementations.
// ///
virtual Result alias(const Value *V1, const Value *V2) const = 0; virtual Result alias(const Value *V1, const Value *V2) const = 0;
// canCallModify - Return a Result that indicates whether the specified /// canCallModify - Return a Result that indicates whether the specified
// function call can modify the memory location pointed to by Ptr. /// function call can modify the memory location pointed to by Ptr.
// ///
virtual Result canCallModify(const CallInst &CI, const Value *Ptr) const = 0; virtual Result canCallModify(const CallInst &CI, const Value *Ptr) const = 0;
// canInvokeModify - Return a Result that indicates whether the specified /// canInvokeModify - Return a Result that indicates whether the specified
// function invoke can modify the memory location pointed to by Ptr. /// function invoke can modify the memory location pointed to by Ptr.
// ///
virtual Result canInvokeModify(const InvokeInst &I, const Value *Ptr) const=0; virtual Result canInvokeModify(const InvokeInst &I, const Value *Ptr) const=0;
// canBasicBlockModify - Return true if it is possible for execution of the /// canBasicBlockModify - Return true if it is possible for execution of the
// specified basic block to modify the value pointed to by Ptr. /// specified basic block to modify the value pointed to by Ptr.
// ///
bool canBasicBlockModify(const BasicBlock &BB, const Value *Ptr) const; bool canBasicBlockModify(const BasicBlock &BB, const Value *Ptr) const;
// canInstructionRangeModify - Return true if it is possible for the execution /// canInstructionRangeModify - Return true if it is possible for the
// of the specified instructions to modify the value pointed to by Ptr. The /// execution of the specified instructions to modify the value pointed to by
// instructions to consider are all of the instructions in the range of /// Ptr. The instructions to consider are all of the instructions in the
// [I1,I2] INCLUSIVE. I1 and I2 must be in the same basic block. /// range of [I1,I2] INCLUSIVE. I1 and I2 must be in the same basic block.
// ///
bool canInstructionRangeModify(const Instruction &I1, const Instruction &I2, bool canInstructionRangeModify(const Instruction &I1, const Instruction &I2,
const Value *Ptr) const; const Value *Ptr) const;