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b8102d2cc0
This patch adds the necessary infrastructure to convert instructions that take two register operands to those that take a register and immediate if the necessary operand is produced by a load-immediate. Furthermore, it uses this infrastructure to perform such conversions twice - first at MachineSSA and then pre-emit. There are a number of reasons we may end up with opportunities for this transformation, including but not limited to: - X-Form instructions chosen since the exact offset isn't available at ISEL time - Atomic instructions with constant operands (we will add patterns for this in the future) - Tail duplication may duplicate code where one block contains this redundancy - When emitting compare-free code in PPCDAGToDAGISel, we don't handle constant comparands specially Furthermore, this patch moves the initialization of PPCMIPeepholePass so that it can be used for MIR tests. llvm-svn: 320791
118 lines
4.0 KiB
C++
118 lines
4.0 KiB
C++
//===-- PPC.h - Top-level interface for PowerPC Target ----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the entry points for global functions defined in the LLVM
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// PowerPC back-end.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_POWERPC_PPC_H
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#define LLVM_LIB_TARGET_POWERPC_PPC_H
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#include "llvm/Support/CodeGen.h"
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#include "MCTargetDesc/PPCMCTargetDesc.h"
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// GCC #defines PPC on Linux but we use it as our namespace name
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#undef PPC
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namespace llvm {
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class PPCTargetMachine;
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class PassRegistry;
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class FunctionPass;
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class MachineInstr;
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class MachineOperand;
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class AsmPrinter;
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class MCInst;
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class MCOperand;
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FunctionPass *createPPCCTRLoops();
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#ifndef NDEBUG
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FunctionPass *createPPCCTRLoopsVerify();
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#endif
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FunctionPass *createPPCLoopPreIncPrepPass(PPCTargetMachine &TM);
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FunctionPass *createPPCTOCRegDepsPass();
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FunctionPass *createPPCEarlyReturnPass();
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FunctionPass *createPPCVSXCopyPass();
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FunctionPass *createPPCVSXFMAMutatePass();
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FunctionPass *createPPCVSXSwapRemovalPass();
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FunctionPass *createPPCReduceCRLogicalsPass();
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FunctionPass *createPPCMIPeepholePass();
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FunctionPass *createPPCBranchSelectionPass();
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FunctionPass *createPPCBranchCoalescingPass();
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FunctionPass *createPPCQPXLoadSplatPass();
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FunctionPass *createPPCISelDag(PPCTargetMachine &TM, CodeGenOpt::Level OL);
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FunctionPass *createPPCTLSDynamicCallPass();
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FunctionPass *createPPCBoolRetToIntPass();
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FunctionPass *createPPCExpandISELPass();
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FunctionPass *createPPCPreEmitPeepholePass();
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void LowerPPCMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI,
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AsmPrinter &AP, bool isDarwin);
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bool LowerPPCMachineOperandToMCOperand(const MachineOperand &MO,
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MCOperand &OutMO, AsmPrinter &AP,
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bool isDarwin);
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void initializePPCVSXFMAMutatePass(PassRegistry&);
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void initializePPCBoolRetToIntPass(PassRegistry&);
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void initializePPCExpandISELPass(PassRegistry &);
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void initializePPCPreEmitPeepholePass(PassRegistry &);
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void initializePPCTLSDynamicCallPass(PassRegistry &);
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void initializePPCMIPeepholePass(PassRegistry&);
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extern char &PPCVSXFMAMutateID;
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namespace PPCII {
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/// Target Operand Flag enum.
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enum TOF {
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//===------------------------------------------------------------------===//
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// PPC Specific MachineOperand flags.
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MO_NO_FLAG,
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/// On a symbol operand "FOO", this indicates that the reference is actually
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/// to "FOO@plt". This is used for calls and jumps to external functions on
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/// for PIC calls on Linux and ELF systems.
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MO_PLT = 1,
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/// MO_PIC_FLAG - If this bit is set, the symbol reference is relative to
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/// the function's picbase, e.g. lo16(symbol-picbase).
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MO_PIC_FLAG = 2,
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/// MO_NLP_FLAG - If this bit is set, the symbol reference is actually to
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/// the non_lazy_ptr for the global, e.g. lo16(symbol$non_lazy_ptr-picbase).
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MO_NLP_FLAG = 4,
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/// MO_NLP_HIDDEN_FLAG - If this bit is set, the symbol reference is to a
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/// symbol with hidden visibility. This causes a different kind of
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/// non-lazy-pointer to be generated.
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MO_NLP_HIDDEN_FLAG = 8,
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/// The next are not flags but distinct values.
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MO_ACCESS_MASK = 0xf0,
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/// MO_LO, MO_HA - lo16(symbol) and ha16(symbol)
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MO_LO = 1 << 4,
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MO_HA = 2 << 4,
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MO_TPREL_LO = 4 << 4,
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MO_TPREL_HA = 3 << 4,
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/// These values identify relocations on immediates folded
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/// into memory operations.
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MO_DTPREL_LO = 5 << 4,
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MO_TLSLD_LO = 6 << 4,
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MO_TOC_LO = 7 << 4,
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// Symbol for VK_PPC_TLS fixup attached to an ADD instruction
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MO_TLS = 8 << 4
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};
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} // end namespace PPCII
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} // end namespace llvm;
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#endif
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