//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "regalloc"
-#include "RegisterClassInfo.h"
+#include "llvm/CodeGen/RegisterClassInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/Target/TargetMachine.h"
+#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
+#include "llvm/Target/TargetMachine.h"
using namespace llvm;
-cl::opt<unsigned> StressRA("stress-regalloc", cl::Hidden, cl::init(0),
- cl::value_desc("N"),
- cl::desc("Limit all regclasses to N registers"));
+static cl::opt<unsigned>
+StressRA("stress-regalloc", cl::Hidden, cl::init(0), cl::value_desc("N"),
+ cl::desc("Limit all regclasses to N registers"));
RegisterClassInfo::RegisterClassInfo() : Tag(0), MF(0), TRI(0), CalleeSaved(0)
{}
}
// Does this MF have different CSRs?
- const unsigned *CSR = TRI->getCalleeSavedRegs(MF);
+ const MCPhysReg *CSR = TRI->getCalleeSavedRegs(MF);
if (Update || CSR != CalleeSaved) {
// Build a CSRNum map. Every CSR alias gets an entry pointing to the last
// overlapping CSR.
CSRNum.clear();
CSRNum.resize(TRI->getNumRegs(), 0);
for (unsigned N = 0; unsigned Reg = CSR[N]; ++N)
- for (const unsigned *AS = TRI->getOverlaps(Reg);
- unsigned Alias = *AS; ++AS)
- CSRNum[Alias] = N + 1; // 0 means no CSR, 1 means CalleeSaved[0], ...
+ for (MCRegAliasIterator AI(Reg, TRI, true); AI.isValid(); ++AI)
+ CSRNum[*AI] = N + 1; // 0 means no CSR, 1 means CalleeSaved[0], ...
Update = true;
}
CalleeSaved = CSR;
// Different reserved registers?
- BitVector RR = TRI->getReservedRegs(*MF);
- if (RR != Reserved)
+ const BitVector &RR = MF->getRegInfo().getReservedRegs();
+ if (Reserved.size() != RR.size() || RR != Reserved) {
Update = true;
- Reserved = RR;
+ Reserved = RR;
+ }
// Invalidate cached information from previous function.
if (Update)
unsigned NumRegs = RC->getNumRegs();
if (!RCI.Order)
- RCI.Order.reset(new unsigned[NumRegs]);
+ RCI.Order.reset(new MCPhysReg[NumRegs]);
unsigned N = 0;
- SmallVector<unsigned, 16> CSRAlias;
+ SmallVector<MCPhysReg, 16> CSRAlias;
// FIXME: Once targets reserve registers instead of removing them from the
// allocation order, we can simply use begin/end here.
- ArrayRef<unsigned> RawOrder = RC->getRawAllocationOrder(*MF);
+ ArrayRef<MCPhysReg> RawOrder = RC->getRawAllocationOrder(*MF);
for (unsigned i = 0; i != RawOrder.size(); ++i) {
unsigned PhysReg = RawOrder[i];
// Remove reserved registers from the allocation order.