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e2ee98ab16
As explained in r204976, because of how the allocation of VSX registers interacts with the call-lowering code, we sometimes end up generating self VSX copies. Specifically, things like this: %VSL2<def> = COPY %F2, %VSL2<imp-use,kill> (where %F2 is really a sub-register of %VSL2, and so this copy is a nop) This adds a small cleanup pass to remove these prior to post-RA scheduling. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204980 91177308-0d34-0410-b5e6-96231b3b80d8
105 lines
3.3 KiB
C++
105 lines
3.3 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_TARGET_POWERPC_H
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#define LLVM_TARGET_POWERPC_H
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#include "MCTargetDesc/PPCMCTargetDesc.h"
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#include <string>
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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 ImmutablePass;
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class JITCodeEmitter;
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class MachineInstr;
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class AsmPrinter;
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class MCInst;
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FunctionPass *createPPCCTRLoops(PPCTargetMachine &TM);
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#ifndef NDEBUG
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FunctionPass *createPPCCTRLoopsVerify();
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#endif
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FunctionPass *createPPCEarlyReturnPass();
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FunctionPass *createPPCVSXCopyPass();
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FunctionPass *createPPCVSXCopyCleanupPass();
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FunctionPass *createPPCVSXFMAMutatePass();
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FunctionPass *createPPCBranchSelectionPass();
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FunctionPass *createPPCISelDag(PPCTargetMachine &TM);
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FunctionPass *createPPCJITCodeEmitterPass(PPCTargetMachine &TM,
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JITCodeEmitter &MCE);
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void LowerPPCMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI,
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AsmPrinter &AP, bool isDarwin);
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/// \brief Creates an PPC-specific Target Transformation Info pass.
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ImmutablePass *createPPCTargetTransformInfoPass(const PPCTargetMachine *TM);
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void initializePPCVSXFMAMutatePass(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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/// MO_DARWIN_STUB - On a symbol operand "FOO", this indicates that the
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/// reference is actually to the "FOO$stub" symbol. This is used for calls
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/// and jumps to external functions on Tiger and earlier.
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MO_DARWIN_STUB = 1,
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/// MO_PIC_FLAG - If this bit is set, the symbol reference is relative to
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/// the function's picbase, e.g. lo16(symbol-picbase).
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MO_PIC_FLAG = 2,
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/// MO_NLP_FLAG - If this bit is set, the symbol reference is actually to
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/// the non_lazy_ptr for the global, e.g. lo16(symbol$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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