// to move them together. If we can move them next to each other we do so and
// replace them with a combine instruction.
//===----------------------------------------------------------------------===//
-#define DEBUG_TYPE "hexagon-copy-combine"
-
#include "llvm/PassSupport.h"
#include "Hexagon.h"
#include "HexagonInstrInfo.h"
using namespace llvm;
+#define DEBUG_TYPE "hexagon-copy-combine"
+
static
cl::opt<bool> IsCombinesDisabled("disable-merge-into-combines",
cl::Hidden, cl::ZeroOrMore,
initializeHexagonCopyToCombinePass(*PassRegistry::getPassRegistry());
}
- virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ void getAnalysisUsage(AnalysisUsage &AU) const override {
MachineFunctionPass::getAnalysisUsage(AU);
}
- const char *getPassName() const {
+ const char *getPassName() const override {
return "Hexagon Copy-To-Combine Pass";
}
- virtual bool runOnMachineFunction(MachineFunction &Fn);
+ bool runOnMachineFunction(MachineFunction &Fn) override;
private:
MachineInstr *findPairable(MachineInstr *I1, bool &DoInsertAtI1);
unsigned KilledOperand = 0;
if (I2->killsRegister(I2UseReg))
KilledOperand = I2UseReg;
- MachineInstr *KillingInstr = 0;
+ MachineInstr *KillingInstr = nullptr;
for (; I != End; ++I) {
// If the intervening instruction I:
// Track killed operands. If we move across an instruction that kills our
// operand, we need to update the kill information on the moved I1. It kills
// the operand now.
- MachineInstr *KillingInstr = 0;
+ MachineInstr *KillingInstr = nullptr;
unsigned KilledOperand = 0;
while(++I != End) {
// Check for an exact kill (registers match).
if (I1UseReg && I->killsRegister(I1UseReg)) {
- assert(KillingInstr == 0 && "Should only see one killing instruction");
+ assert(!KillingInstr && "Should only see one killing instruction");
KilledOperand = I1UseReg;
KillingInstr = &*I;
}
bool HasChanged = false;
// Get target info.
- TRI = MF.getTarget().getRegisterInfo();
- TII = static_cast<const HexagonInstrInfo *>(MF.getTarget().getInstrInfo());
+ TRI = MF.getSubtarget().getRegisterInfo();
+ TII = static_cast<const HexagonInstrInfo *>(MF.getSubtarget().getInstrInfo());
// Combine aggressively (for code size)
ShouldCombineAggressively =
// Not safe. Stop searching.
break;
}
- return 0;
+ return nullptr;
}
void HexagonCopyToCombine::combine(MachineInstr *I1, MachineInstr *I2,