From 411bd29eea3c360d5b48a18a17b5e87f5671af0e Mon Sep 17 00:00:00 2001 From: Dimitry Andric Date: Sun, 17 Jul 2011 15:36:56 +0000 Subject: Vendor import of llvm trunk r135360: http://llvm.org/svn/llvm-project/llvm/trunk@135360 --- lib/Target/ARM/ARMBaseRegisterInfo.cpp | 88 ++++++++++++++-------------------- 1 file changed, 37 insertions(+), 51 deletions(-) (limited to 'lib/Target/ARM/ARMBaseRegisterInfo.cpp') diff --git a/lib/Target/ARM/ARMBaseRegisterInfo.cpp b/lib/Target/ARM/ARMBaseRegisterInfo.cpp index 4ab37f6cc759..ba422952ac1a 100644 --- a/lib/Target/ARM/ARMBaseRegisterInfo.cpp +++ b/lib/Target/ARM/ARMBaseRegisterInfo.cpp @@ -40,6 +40,9 @@ #include "llvm/ADT/SmallVector.h" #include "llvm/Support/CommandLine.h" +#define GET_REGINFO_TARGET_DESC +#include "ARMGenRegisterInfo.inc" + using namespace llvm; static cl::opt @@ -54,8 +57,7 @@ EnableBasePointer("arm-use-base-pointer", cl::Hidden, cl::init(true), ARMBaseRegisterInfo::ARMBaseRegisterInfo(const ARMBaseInstrInfo &tii, const ARMSubtarget &sti) - : ARMGenRegisterInfo(ARM::ADJCALLSTACKDOWN, ARM::ADJCALLSTACKUP), - TII(tii), STI(sti), + : ARMGenRegisterInfo(), TII(tii), STI(sti), FramePtr((STI.isTargetDarwin() || STI.isThumb()) ? ARM::R7 : ARM::R11), BasePtr(ARM::R6) { } @@ -100,6 +102,12 @@ getReservedRegs(const MachineFunction &MF) const { // Some targets reserve R9. if (STI.isR9Reserved()) Reserved.set(ARM::R9); + // Reserve D16-D31 if the subtarget doesn't support them. + if (!STI.hasVFP3() || STI.hasD16()) { + assert(ARM::D31 == ARM::D16 + 15); + for (unsigned i = 0; i != 16; ++i) + Reserved.set(ARM::D16 + i); + } return Reserved; } @@ -387,12 +395,12 @@ ARMBaseRegisterInfo::getRegPressureLimit(const TargetRegisterClass *RC, } } -/// getAllocationOrder - Returns the register allocation order for a specified -/// register class in the form of a pair of TargetRegisterClass iterators. -std::pair -ARMBaseRegisterInfo::getAllocationOrder(const TargetRegisterClass *RC, - unsigned HintType, unsigned HintReg, - const MachineFunction &MF) const { +/// getRawAllocationOrder - Returns the register allocation order for a +/// specified register class with a target-dependent hint. +ArrayRef +ARMBaseRegisterInfo::getRawAllocationOrder(const TargetRegisterClass *RC, + unsigned HintType, unsigned HintReg, + const MachineFunction &MF) const { const TargetFrameLowering *TFI = MF.getTarget().getFrameLowering(); // Alternative register allocation orders when favoring even / odd registers // of register pairs. @@ -469,70 +477,54 @@ ARMBaseRegisterInfo::getAllocationOrder(const TargetRegisterClass *RC, // We only support even/odd hints for GPR and rGPR. if (RC != ARM::GPRRegisterClass && RC != ARM::rGPRRegisterClass) - return std::make_pair(RC->allocation_order_begin(MF), - RC->allocation_order_end(MF)); + return RC->getRawAllocationOrder(MF); if (HintType == ARMRI::RegPairEven) { if (isPhysicalRegister(HintReg) && getRegisterPairEven(HintReg, MF) == 0) // It's no longer possible to fulfill this hint. Return the default // allocation order. - return std::make_pair(RC->allocation_order_begin(MF), - RC->allocation_order_end(MF)); + return RC->getRawAllocationOrder(MF); if (!TFI->hasFP(MF)) { if (!STI.isR9Reserved()) - return std::make_pair(GPREven1, - GPREven1 + (sizeof(GPREven1)/sizeof(unsigned))); + return ArrayRef(GPREven1); else - return std::make_pair(GPREven4, - GPREven4 + (sizeof(GPREven4)/sizeof(unsigned))); + return ArrayRef(GPREven4); } else if (FramePtr == ARM::R7) { if (!STI.isR9Reserved()) - return std::make_pair(GPREven2, - GPREven2 + (sizeof(GPREven2)/sizeof(unsigned))); + return ArrayRef(GPREven2); else - return std::make_pair(GPREven5, - GPREven5 + (sizeof(GPREven5)/sizeof(unsigned))); + return ArrayRef(GPREven5); } else { // FramePtr == ARM::R11 if (!STI.isR9Reserved()) - return std::make_pair(GPREven3, - GPREven3 + (sizeof(GPREven3)/sizeof(unsigned))); + return ArrayRef(GPREven3); else - return std::make_pair(GPREven6, - GPREven6 + (sizeof(GPREven6)/sizeof(unsigned))); + return ArrayRef(GPREven6); } } else if (HintType == ARMRI::RegPairOdd) { if (isPhysicalRegister(HintReg) && getRegisterPairOdd(HintReg, MF) == 0) // It's no longer possible to fulfill this hint. Return the default // allocation order. - return std::make_pair(RC->allocation_order_begin(MF), - RC->allocation_order_end(MF)); + return RC->getRawAllocationOrder(MF); if (!TFI->hasFP(MF)) { if (!STI.isR9Reserved()) - return std::make_pair(GPROdd1, - GPROdd1 + (sizeof(GPROdd1)/sizeof(unsigned))); + return ArrayRef(GPROdd1); else - return std::make_pair(GPROdd4, - GPROdd4 + (sizeof(GPROdd4)/sizeof(unsigned))); + return ArrayRef(GPROdd4); } else if (FramePtr == ARM::R7) { if (!STI.isR9Reserved()) - return std::make_pair(GPROdd2, - GPROdd2 + (sizeof(GPROdd2)/sizeof(unsigned))); + return ArrayRef(GPROdd2); else - return std::make_pair(GPROdd5, - GPROdd5 + (sizeof(GPROdd5)/sizeof(unsigned))); + return ArrayRef(GPROdd5); } else { // FramePtr == ARM::R11 if (!STI.isR9Reserved()) - return std::make_pair(GPROdd3, - GPROdd3 + (sizeof(GPROdd3)/sizeof(unsigned))); + return ArrayRef(GPROdd3); else - return std::make_pair(GPROdd6, - GPROdd6 + (sizeof(GPROdd6)/sizeof(unsigned))); + return ArrayRef(GPROdd6); } } - return std::make_pair(RC->allocation_order_begin(MF), - RC->allocation_order_end(MF)); + return RC->getRawAllocationOrder(MF); } /// ResolveRegAllocHint - Resolves the specified register allocation hint @@ -965,7 +957,7 @@ eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB, int64_t ARMBaseRegisterInfo:: getFrameIndexInstrOffset(const MachineInstr *MI, int Idx) const { - const TargetInstrDesc &Desc = MI->getDesc(); + const MCInstrDesc &Desc = MI->getDesc(); unsigned AddrMode = (Desc.TSFlags & ARMII::AddrModeMask); int64_t InstrOffs = 0;; int Scale = 1; @@ -1115,11 +1107,11 @@ materializeFrameBaseRegister(MachineBasicBlock *MBB, if (Ins != MBB->end()) DL = Ins->getDebugLoc(); - const TargetInstrDesc &TID = TII.get(ADDriOpc); + const MCInstrDesc &MCID = TII.get(ADDriOpc); MachineRegisterInfo &MRI = MBB->getParent()->getRegInfo(); - MRI.constrainRegClass(BaseReg, TID.OpInfo[0].getRegClass(this)); + MRI.constrainRegClass(BaseReg, TII.getRegClass(MCID, 0, this)); - MachineInstrBuilder MIB = BuildMI(*MBB, Ins, DL, TID, BaseReg) + MachineInstrBuilder MIB = BuildMI(*MBB, Ins, DL, MCID, BaseReg) .addFrameIndex(FrameIdx).addImm(Offset); if (!AFI->isThumb1OnlyFunction()) @@ -1155,7 +1147,7 @@ ARMBaseRegisterInfo::resolveFrameIndex(MachineBasicBlock::iterator I, bool ARMBaseRegisterInfo::isFrameOffsetLegal(const MachineInstr *MI, int64_t Offset) const { - const TargetInstrDesc &Desc = MI->getDesc(); + const MCInstrDesc &Desc = MI->getDesc(); unsigned AddrMode = (Desc.TSFlags & ARMII::AddrModeMask); unsigned i = 0; @@ -1291,11 +1283,5 @@ ARMBaseRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II, } // Update the original instruction to use the scratch register. MI.getOperand(i).ChangeToRegister(ScratchReg, false, false, true); - if (MI.getOpcode() == ARM::t2ADDrSPi) - MI.setDesc(TII.get(ARM::t2ADDri)); - else if (MI.getOpcode() == ARM::t2SUBrSPi) - MI.setDesc(TII.get(ARM::t2SUBri)); } } - -#include "ARMGenRegisterInfo.inc" -- cgit v1.3