Coverage Report

Created: 2019-07-24 05:18

/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/lib/Target/X86/X86InstrFoldTables.h
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//===-- X86InstrFoldTables.h - X86 Instruction Folding Tables ---*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the interface to query the X86 memory folding tables.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_X86_X86INSTRFOLDTABLES_H
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#define LLVM_LIB_TARGET_X86_X86INSTRFOLDTABLES_H
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#include "llvm/Support/DataTypes.h"
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namespace llvm {
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enum {
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  // Select which memory operand is being unfolded.
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  // (stored in bits 0 - 3)
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  TB_INDEX_0    = 0,
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  TB_INDEX_1    = 1,
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  TB_INDEX_2    = 2,
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  TB_INDEX_3    = 3,
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  TB_INDEX_4    = 4,
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  TB_INDEX_MASK = 0xf,
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  // Do not insert the reverse map (MemOp -> RegOp) into the table.
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  // This may be needed because there is a many -> one mapping.
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  TB_NO_REVERSE   = 1 << 4,
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  // Do not insert the forward map (RegOp -> MemOp) into the table.
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  // This is needed for Native Client, which prohibits branch
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  // instructions from using a memory operand.
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  TB_NO_FORWARD   = 1 << 5,
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  TB_FOLDED_LOAD  = 1 << 6,
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  TB_FOLDED_STORE = 1 << 7,
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  // Minimum alignment required for load/store.
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  // Used for RegOp->MemOp conversion.
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  // (stored in bits 8 - 15)
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  TB_ALIGN_SHIFT = 8,
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  TB_ALIGN_NONE  =    0 << TB_ALIGN_SHIFT,
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  TB_ALIGN_16    =   16 << TB_ALIGN_SHIFT,
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  TB_ALIGN_32    =   32 << TB_ALIGN_SHIFT,
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  TB_ALIGN_64    =   64 << TB_ALIGN_SHIFT,
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  TB_ALIGN_MASK  = 0xff << TB_ALIGN_SHIFT
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};
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// This struct is used for both the folding and unfold tables. They KeyOp
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// is used to determine the sorting order.
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struct X86MemoryFoldTableEntry {
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  uint16_t KeyOp;
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  uint16_t DstOp;
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  uint16_t Flags;
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65.9M
  bool operator<(const X86MemoryFoldTableEntry &RHS) const {
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65.9M
    return KeyOp < RHS.KeyOp;
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65.9M
  }
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0
  bool operator==(const X86MemoryFoldTableEntry &RHS) const {
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0
    return KeyOp == RHS.KeyOp;
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  }
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1.32M
  friend bool operator<(const X86MemoryFoldTableEntry &TE, unsigned Opcode) {
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1.32M
    return TE.KeyOp < Opcode;
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1.32M
  }
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};
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// Look up the memory folding table entry for folding a load and a store into
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// operand 0.
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const X86MemoryFoldTableEntry *lookupTwoAddrFoldTable(unsigned RegOp);
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// Look up the memory folding table entry for folding a load or store with
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// operand OpNum.
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const X86MemoryFoldTableEntry *lookupFoldTable(unsigned RegOp, unsigned OpNum);
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// Look up the memory unfolding table entry for this instruction.
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const X86MemoryFoldTableEntry *lookupUnfoldTable(unsigned MemOp);
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} // namespace llvm
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#endif