diff options
Diffstat (limited to 'include/llvm/CodeGen/MachineFunctionPass.h')
-rw-r--r-- | include/llvm/CodeGen/MachineFunctionPass.h | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/include/llvm/CodeGen/MachineFunctionPass.h b/include/llvm/CodeGen/MachineFunctionPass.h index 6b5e64a..bac1103 100644 --- a/include/llvm/CodeGen/MachineFunctionPass.h +++ b/include/llvm/CodeGen/MachineFunctionPass.h @@ -20,23 +20,34 @@ #define LLVM_CODEGEN_MACHINE_FUNCTION_PASS_H #include "llvm/Pass.h" -#include "llvm/CodeGen/MachineFunction.h" namespace llvm { - // FIXME: This pass should declare that the pass does not invalidate any LLVM - // passes. -struct MachineFunctionPass : public FunctionPass { +class MachineFunction; + +/// MachineFunctionPass - This class adapts the FunctionPass interface to +/// allow convenient creation of passes that operate on the MachineFunction +/// representation. Instead of overriding runOnFunction, subclasses +/// override runOnMachineFunction. +class MachineFunctionPass : public FunctionPass { +protected: explicit MachineFunctionPass(intptr_t ID) : FunctionPass(ID) {} explicit MachineFunctionPass(void *ID) : FunctionPass(ID) {} -protected: /// runOnMachineFunction - This method must be overloaded to perform the /// desired machine code transformation or analysis. /// virtual bool runOnMachineFunction(MachineFunction &MF) = 0; -public: + /// getAnalysisUsage - Subclasses that override getAnalysisUsage + /// must call this. + /// + /// For MachineFunctionPasses, calling AU.preservesCFG() indicates that + /// the pass does not modify the MachineBasicBlock CFG. + /// + virtual void getAnalysisUsage(AnalysisUsage &AU) const; + +private: bool runOnFunction(Function &F); }; |