//===- StackSlots.cpp - Specialize LLVM code for target machine ---------===//
//
-// This pass adds 2 empty slots at the top of function stack.
-// These two slots are later used during code reoptimization
-// for spilling the resgiter values when rewriting branches.
+// This pass adds 2 empty slots at the top of function stack. These two slots
+// are later used during code reoptimization for spilling the register values
+// when rewriting branches.
//
//===----------------------------------------------------------------------===//
+#include "llvm/CodeGen/StackSlots.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/MachineInstrInfo.h"
-#include "llvm/Constants.h"
+#include "llvm/Constant.h"
#include "llvm/Function.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Pass.h"
-#include "llvm/CodeGen/MachineCodeForMethod.h"
+#include "llvm/CodeGen/MachineFunction.h"
-using std::map;
-using std::cerr;
+class StackSlots : public FunctionPass {
+ const TargetMachine &Target;
+public:
+ StackSlots (const TargetMachine &T) : Target(T) {}
+ const char *getPassName() const {
+ return "Stack Slot Insertion for profiling code";
+ }
-class StackSlots : public FunctionPass{
-private:
- const TargetMachine ⌖
-public:
- StackSlots (const TargetMachine &T): target(T) {}
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.setPreservesCFG();
+ }
bool runOnFunction(Function &F) {
- Value *v = ConstantSInt::get(Type::IntTy,0);
- MachineCodeForMethod &mcInfo = MachineCodeForMethod::get(&F);
- mcInfo.allocateLocalVar
- (target, v, 2*target.DataLayout.getTypeSize(PointerType::get(Type::IntTy)));
-
+ const Type *PtrInt = PointerType::get(Type::IntTy);
+ unsigned Size = Target.DataLayout.getTypeSize(PtrInt);
+
+ MachineFunction &mcInfo = MachineFunction::get(&F);
+ Value *V = Constant::getNullValue(Type::IntTy);
+ mcInfo.allocateLocalVar(Target, V, 2*Size);
return true;
}
};
-
-Pass* createStackSlotsPass(TargetMachine &T){
- return new StackSlots(T);
+Pass *createStackSlotsPass(const TargetMachine &Target) {
+ return new StackSlots(Target);
}
-