//
//===----------------------------------------------------------------------===//
-#define DEBUG_TYPE "thumb2-it"
#include "ARM.h"
#include "ARMMachineFunctionInfo.h"
#include "Thumb2InstrInfo.h"
#include "llvm/CodeGen/MachineInstrBundle.h"
using namespace llvm;
+#define DEBUG_TYPE "thumb2-it"
+
STATISTIC(NumITs, "Number of IT blocks inserted");
STATISTIC(NumMovedInsts, "Number of predicated instructions moved");
static char ID;
Thumb2ITBlockPass() : MachineFunctionPass(ID) {}
- bool hasV8Ops;
+ bool restrictIT;
const Thumb2InstrInfo *TII;
const TargetRegisterInfo *TRI;
ARMFunctionInfo *AFI;
- virtual bool runOnMachineFunction(MachineFunction &Fn);
+ bool runOnMachineFunction(MachineFunction &Fn) override;
- virtual const char *getPassName() const {
+ const char *getPassName() const override {
return "Thumb IT blocks insertion pass";
}
ARMCC::CondCodes OCC = ARMCC::getOppositeCondition(CC);
unsigned Mask = 0, Pos = 3;
- // v8 IT blocks are limited to one conditional op: skip the loop
- if (!hasV8Ops) {
+ // v8 IT blocks are limited to one conditional op unless -arm-no-restrict-it
+ // is set: skip the loop
+ if (!restrictIT) {
// Branches, including tricky ones like LDM_RET, need to end an IT
// block so check the instruction we just put in the block.
for (; MBBI != E && Pos &&
// Finalize the bundle.
MachineBasicBlock::instr_iterator LI = LastITMI;
- finalizeBundle(MBB, InsertPos.getInstrIterator(), llvm::next(LI));
+ finalizeBundle(MBB, InsertPos.getInstrIterator(), std::next(LI));
Modified = true;
++NumITs;
bool Thumb2ITBlockPass::runOnMachineFunction(MachineFunction &Fn) {
const TargetMachine &TM = Fn.getTarget();
AFI = Fn.getInfo<ARMFunctionInfo>();
- TII = static_cast<const Thumb2InstrInfo*>(TM.getInstrInfo());
- TRI = TM.getRegisterInfo();
- hasV8Ops = TM.getSubtarget<ARMSubtarget>().hasV8Ops();
+ TII = static_cast<const Thumb2InstrInfo *>(
+ TM.getSubtargetImpl()->getInstrInfo());
+ TRI = TM.getSubtargetImpl()->getRegisterInfo();
+ restrictIT = TM.getSubtarget<ARMSubtarget>().restrictIT();
if (!AFI->isThumbFunction())
return false;