- class CallInst;
- class Module;
- class TargetData;
-
- class IntrinsicLowering {
- const TargetData& TD;
- public:
- explicit IntrinsicLowering(const TargetData &td) : TD(td) {}
-
- /// AddPrototypes - This method, if called, causes all of the prototypes
- /// that might be needed by an intrinsic lowering implementation to be
- /// inserted into the module specified.
- void AddPrototypes(Module &M);
-
- /// LowerIntrinsicCall - This method replaces a call with the LLVM function
- /// which should be used to implement the specified intrinsic function call.
- /// If an intrinsic function must be implemented by the code generator
- /// (such as va_start), this function should print a message and abort.
- ///
- /// Otherwise, if an intrinsic function call can be lowered, the code to
- /// implement it (often a call to a non-intrinsic function) is inserted
- /// _after_ the call instruction and the call is deleted. The caller must
- /// be capable of handling this kind of change.
- ///
- void LowerIntrinsicCall(CallInst *CI);
- };
+class CallInst;
+class Module;
+class DataLayout;
+
+class IntrinsicLowering {
+ const DataLayout &DL;
+
+ bool Warned;
+
+public:
+ explicit IntrinsicLowering(const DataLayout &DL) : DL(DL), Warned(false) {}
+
+ /// AddPrototypes - This method, if called, causes all of the prototypes
+ /// that might be needed by an intrinsic lowering implementation to be
+ /// inserted into the module specified.
+ void AddPrototypes(Module &M);
+
+ /// LowerIntrinsicCall - This method replaces a call with the LLVM function
+ /// which should be used to implement the specified intrinsic function call.
+ /// If an intrinsic function must be implemented by the code generator
+ /// (such as va_start), this function should print a message and abort.
+ ///
+ /// Otherwise, if an intrinsic function call can be lowered, the code to
+ /// implement it (often a call to a non-intrinsic function) is inserted
+ /// _after_ the call instruction and the call is deleted. The caller must
+ /// be capable of handling this kind of change.
+ ///
+ void LowerIntrinsicCall(CallInst *CI);
+
+ /// LowerToByteSwap - Replace a call instruction into a call to bswap
+ /// intrinsic. Return false if it has determined the call is not a
+ /// simple integer bswap.
+ static bool LowerToByteSwap(CallInst *CI);
+};