#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
+#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/IndexedMap.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/SparseBitVector.h"
class LiveVariables : public MachineFunctionPass {
public:
static char ID; // Pass identification, replacement for typeid
- LiveVariables() : MachineFunctionPass(&ID) {}
+ LiveVariables() : MachineFunctionPass(ID) {
+ initializeLiveVariablesPass(*PassRegistry::getPassRegistry());
+ }
/// VarInfo - This represents the regions where a virtual register is live in
/// the program. We represent this with three different pieces of
///
SparseBitVector<> AliveBlocks;
- /// NumUses - Number of uses of this register across the entire function.
- ///
- unsigned NumUses;
-
/// Kills - List of MachineInstruction's which are the last use of this
/// virtual register (kill it) in their basic block.
///
std::vector<MachineInstr*> Kills;
- VarInfo() : NumUses(0) {}
-
/// removeKill - Delete a kill corresponding to the specified
/// machine instruction. Returns true if there was a kill
/// corresponding to this instruction, false otherwise.
private:
/// VirtRegInfo - This list is a mapping from virtual register number to
- /// variable information. FirstVirtualRegister is subtracted from the virtual
- /// register number before indexing into this list.
+ /// variable information.
///
- std::vector<VarInfo> VirtRegInfo;
+ IndexedMap<VarInfo, VirtReg2IndexFunctor> VirtRegInfo;
/// PHIJoins - list of virtual registers that are PHI joins. These registers
/// may have multiple definitions, and they require special handling when
/// the last use of the whole register.
bool HandlePhysRegKill(unsigned Reg, MachineInstr *MI);
+ /// HandleRegMask - Call HandlePhysRegKill for all registers clobbered by Mask.
+ void HandleRegMask(const MachineOperand&);
+
void HandlePhysRegUse(unsigned Reg, MachineInstr *MI);
void HandlePhysRegDef(unsigned Reg, MachineInstr *MI,
SmallVector<unsigned, 4> &Defs);
}
assert(Removed && "Register is not used by this instruction!");
+ (void)Removed;
return true;
}
}
}
assert(Removed && "Register is not defined by this instruction!");
+ (void)Removed;
return true;
}