diff options
Diffstat (limited to 'lib/Target/Blackfin')
-rw-r--r-- | lib/Target/Blackfin/BlackfinFrameInfo.cpp | 97 | ||||
-rw-r--r-- | lib/Target/Blackfin/BlackfinFrameInfo.h | 41 | ||||
-rw-r--r-- | lib/Target/Blackfin/BlackfinRegisterInfo.cpp | 67 | ||||
-rw-r--r-- | lib/Target/Blackfin/BlackfinRegisterInfo.h | 3 | ||||
-rw-r--r-- | lib/Target/Blackfin/BlackfinTargetMachine.cpp | 2 | ||||
-rw-r--r-- | lib/Target/Blackfin/BlackfinTargetMachine.h | 13 |
6 files changed, 146 insertions, 77 deletions
diff --git a/lib/Target/Blackfin/BlackfinFrameInfo.cpp b/lib/Target/Blackfin/BlackfinFrameInfo.cpp new file mode 100644 index 0000000..83f28b0 --- /dev/null +++ b/lib/Target/Blackfin/BlackfinFrameInfo.cpp @@ -0,0 +1,97 @@ +//====- BlackfinFrameInfo.cpp - Blackfin Frame Information ------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file contains the Blackfin implementation of TargetFrameInfo class. +// +//===----------------------------------------------------------------------===// + +#include "BlackfinFrameInfo.h" +#include "BlackfinInstrInfo.h" +#include "llvm/CodeGen/MachineFrameInfo.h" +#include "llvm/CodeGen/MachineFunction.h" +#include "llvm/CodeGen/MachineInstrBuilder.h" + +using namespace llvm; + + +// Emit a prologue that sets up a stack frame. +// On function entry, R0-R2 and P0 may hold arguments. +// R3, P1, and P2 may be used as scratch registers +void BlackfinFrameInfo::emitPrologue(MachineFunction &MF) const { + MachineBasicBlock &MBB = MF.front(); // Prolog goes in entry BB + MachineBasicBlock::iterator MBBI = MBB.begin(); + MachineFrameInfo *MFI = MF.getFrameInfo(); + const BlackfinRegisterInfo *RegInfo = + static_cast<const BlackfinRegisterInfo*>(MF.getTarget().getRegisterInfo()); + const BlackfinInstrInfo &TII = + *static_cast<const BlackfinInstrInfo*>(MF.getTarget().getInstrInfo()); + + DebugLoc dl = MBBI != MBB.end() ? MBBI->getDebugLoc() : DebugLoc(); + + int FrameSize = MFI->getStackSize(); + if (FrameSize%4) { + FrameSize = (FrameSize+3) & ~3; + MFI->setStackSize(FrameSize); + } + + if (!RegInfo->hasFP(MF)) { + assert(!MFI->adjustsStack() && + "FP elimination on a non-leaf function is not supported"); + RegInfo->adjustRegister(MBB, MBBI, dl, BF::SP, BF::P1, -FrameSize); + return; + } + + // emit a LINK instruction + if (FrameSize <= 0x3ffff) { + BuildMI(MBB, MBBI, dl, TII.get(BF::LINK)).addImm(FrameSize); + return; + } + + // Frame is too big, do a manual LINK: + // [--SP] = RETS; + // [--SP] = FP; + // FP = SP; + // P1 = -FrameSize; + // SP = SP + P1; + BuildMI(MBB, MBBI, dl, TII.get(BF::PUSH)) + .addReg(BF::RETS, RegState::Kill); + BuildMI(MBB, MBBI, dl, TII.get(BF::PUSH)) + .addReg(BF::FP, RegState::Kill); + BuildMI(MBB, MBBI, dl, TII.get(BF::MOVE), BF::FP) + .addReg(BF::SP); + RegInfo->loadConstant(MBB, MBBI, dl, BF::P1, -FrameSize); + BuildMI(MBB, MBBI, dl, TII.get(BF::ADDpp), BF::SP) + .addReg(BF::SP, RegState::Kill) + .addReg(BF::P1, RegState::Kill); + +} + +void BlackfinFrameInfo::emitEpilogue(MachineFunction &MF, + MachineBasicBlock &MBB) const { + MachineFrameInfo *MFI = MF.getFrameInfo(); + const BlackfinRegisterInfo *RegInfo = + static_cast<const BlackfinRegisterInfo*>(MF.getTarget().getRegisterInfo()); + const BlackfinInstrInfo &TII = + *static_cast<const BlackfinInstrInfo*>(MF.getTarget().getInstrInfo()); + MachineBasicBlock::iterator MBBI = prior(MBB.end()); + DebugLoc dl = MBBI->getDebugLoc(); + + int FrameSize = MFI->getStackSize(); + assert(FrameSize%4 == 0 && "Misaligned frame size"); + + if (!RegInfo->hasFP(MF)) { + assert(!MFI->adjustsStack() && + "FP elimination on a non-leaf function is not supported"); + RegInfo->adjustRegister(MBB, MBBI, dl, BF::SP, BF::P1, FrameSize); + return; + } + + // emit an UNLINK instruction + BuildMI(MBB, MBBI, dl, TII.get(BF::UNLINK)); +} diff --git a/lib/Target/Blackfin/BlackfinFrameInfo.h b/lib/Target/Blackfin/BlackfinFrameInfo.h new file mode 100644 index 0000000..ff8ba2d --- /dev/null +++ b/lib/Target/Blackfin/BlackfinFrameInfo.h @@ -0,0 +1,41 @@ +//=- BlackfinFrameInfo.h - Define TargetFrameInfo for Blackfin --*- C++ -*--==// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// +// +//===----------------------------------------------------------------------===// + +#ifndef ALPHA_FRAMEINFO_H +#define ALPHA_FRAMEINFO_H + +#include "Blackfin.h" +#include "BlackfinSubtarget.h" +#include "llvm/Target/TargetFrameInfo.h" + +namespace llvm { + class BlackfinSubtarget; + +class BlackfinFrameInfo : public TargetFrameInfo { +protected: + const BlackfinSubtarget &STI; + +public: + explicit BlackfinFrameInfo(const BlackfinSubtarget &sti) + : TargetFrameInfo(TargetFrameInfo::StackGrowsDown, 4, 0), STI(sti) { + } + + /// emitProlog/emitEpilog - These methods insert prolog and epilog code into + /// the function. + void emitPrologue(MachineFunction &MF) const; + void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const; +}; + +} // End llvm namespace + +#endif diff --git a/lib/Target/Blackfin/BlackfinRegisterInfo.cpp b/lib/Target/Blackfin/BlackfinRegisterInfo.cpp index a518312..4f827b7 100644 --- a/lib/Target/Blackfin/BlackfinRegisterInfo.cpp +++ b/lib/Target/Blackfin/BlackfinRegisterInfo.cpp @@ -342,73 +342,6 @@ processFunctionBeforeCalleeSavedScan(MachineFunction &MF, } } -// Emit a prologue that sets up a stack frame. -// On function entry, R0-R2 and P0 may hold arguments. -// R3, P1, and P2 may be used as scratch registers -void BlackfinRegisterInfo::emitPrologue(MachineFunction &MF) const { - MachineBasicBlock &MBB = MF.front(); // Prolog goes in entry BB - MachineBasicBlock::iterator MBBI = MBB.begin(); - MachineFrameInfo *MFI = MF.getFrameInfo(); - DebugLoc dl = MBBI != MBB.end() ? MBBI->getDebugLoc() : DebugLoc(); - - int FrameSize = MFI->getStackSize(); - if (FrameSize%4) { - FrameSize = (FrameSize+3) & ~3; - MFI->setStackSize(FrameSize); - } - - if (!hasFP(MF)) { - assert(!MFI->adjustsStack() && - "FP elimination on a non-leaf function is not supported"); - adjustRegister(MBB, MBBI, dl, BF::SP, BF::P1, -FrameSize); - return; - } - - // emit a LINK instruction - if (FrameSize <= 0x3ffff) { - BuildMI(MBB, MBBI, dl, TII.get(BF::LINK)).addImm(FrameSize); - return; - } - - // Frame is too big, do a manual LINK: - // [--SP] = RETS; - // [--SP] = FP; - // FP = SP; - // P1 = -FrameSize; - // SP = SP + P1; - BuildMI(MBB, MBBI, dl, TII.get(BF::PUSH)) - .addReg(BF::RETS, RegState::Kill); - BuildMI(MBB, MBBI, dl, TII.get(BF::PUSH)) - .addReg(BF::FP, RegState::Kill); - BuildMI(MBB, MBBI, dl, TII.get(BF::MOVE), BF::FP) - .addReg(BF::SP); - loadConstant(MBB, MBBI, dl, BF::P1, -FrameSize); - BuildMI(MBB, MBBI, dl, TII.get(BF::ADDpp), BF::SP) - .addReg(BF::SP, RegState::Kill) - .addReg(BF::P1, RegState::Kill); - -} - -void BlackfinRegisterInfo::emitEpilogue(MachineFunction &MF, - MachineBasicBlock &MBB) const { - MachineFrameInfo *MFI = MF.getFrameInfo(); - MachineBasicBlock::iterator MBBI = prior(MBB.end()); - DebugLoc dl = MBBI->getDebugLoc(); - - int FrameSize = MFI->getStackSize(); - assert(FrameSize%4 == 0 && "Misaligned frame size"); - - if (!hasFP(MF)) { - assert(!MFI->adjustsStack() && - "FP elimination on a non-leaf function is not supported"); - adjustRegister(MBB, MBBI, dl, BF::SP, BF::P1, FrameSize); - return; - } - - // emit an UNLINK instruction - BuildMI(MBB, MBBI, dl, TII.get(BF::UNLINK)); -} - unsigned BlackfinRegisterInfo::getRARegister() const { return BF::RETS; } diff --git a/lib/Target/Blackfin/BlackfinRegisterInfo.h b/lib/Target/Blackfin/BlackfinRegisterInfo.h index bb83c34..be08292 100644 --- a/lib/Target/Blackfin/BlackfinRegisterInfo.h +++ b/lib/Target/Blackfin/BlackfinRegisterInfo.h @@ -57,9 +57,6 @@ namespace llvm { void processFunctionBeforeCalleeSavedScan(MachineFunction &MF, RegScavenger *RS) const; - void emitPrologue(MachineFunction &MF) const; - void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const; - unsigned getFrameRegister(const MachineFunction &MF) const; unsigned getRARegister() const; diff --git a/lib/Target/Blackfin/BlackfinTargetMachine.cpp b/lib/Target/Blackfin/BlackfinTargetMachine.cpp index 66a2f68..da6490f 100644 --- a/lib/Target/Blackfin/BlackfinTargetMachine.cpp +++ b/lib/Target/Blackfin/BlackfinTargetMachine.cpp @@ -33,7 +33,7 @@ BlackfinTargetMachine::BlackfinTargetMachine(const Target &T, TLInfo(*this), TSInfo(*this), InstrInfo(Subtarget), - FrameInfo(TargetFrameInfo::StackGrowsDown, 4, 0) { + FrameInfo(Subtarget) { } bool BlackfinTargetMachine::addInstSelector(PassManagerBase &PM, diff --git a/lib/Target/Blackfin/BlackfinTargetMachine.h b/lib/Target/Blackfin/BlackfinTargetMachine.h index a63aa54..19d3f5b 100644 --- a/lib/Target/Blackfin/BlackfinTargetMachine.h +++ b/lib/Target/Blackfin/BlackfinTargetMachine.h @@ -14,14 +14,15 @@ #ifndef BLACKFINTARGETMACHINE_H #define BLACKFINTARGETMACHINE_H -#include "llvm/Target/TargetMachine.h" -#include "llvm/Target/TargetData.h" -#include "llvm/Target/TargetFrameInfo.h" #include "BlackfinInstrInfo.h" -#include "BlackfinSubtarget.h" +#include "BlackfinIntrinsicInfo.h" #include "BlackfinISelLowering.h" +#include "BlackfinFrameInfo.h" +#include "BlackfinSubtarget.h" #include "BlackfinSelectionDAGInfo.h" -#include "BlackfinIntrinsicInfo.h" +#include "llvm/Target/TargetMachine.h" +#include "llvm/Target/TargetData.h" +#include "llvm/Target/TargetFrameInfo.h" namespace llvm { @@ -31,7 +32,7 @@ namespace llvm { BlackfinTargetLowering TLInfo; BlackfinSelectionDAGInfo TSInfo; BlackfinInstrInfo InstrInfo; - TargetFrameInfo FrameInfo; + BlackfinFrameInfo FrameInfo; BlackfinIntrinsicInfo IntrinsicInfo; public: BlackfinTargetMachine(const Target &T, const std::string &TT, |