//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
namespace llvm {
class CallInst;
class Module;
+ class DataLayout;
class IntrinsicLowering {
+ const DataLayout& TD;
+
+
+ bool Warned;
public:
- IntrinsicLowering() {}
+ explicit IntrinsicLowering(const DataLayout &td) :
+ TD(td), 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 returns 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.
+ /// 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
/// 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);
};
}