Coverage Report

Created: 2019-07-24 05:18

/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/lib/Target/X86/X86InstrFMA3Info.h
Line
Count
Source (jump to first uncovered line)
1
//===- X86InstrFMA3Info.h - X86 FMA3 Instruction Information ----*- C++ -*-===//
2
//
3
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4
// See https://llvm.org/LICENSE.txt for license information.
5
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6
//
7
//===----------------------------------------------------------------------===//
8
//
9
// This file contains the implementation of the classes providing information
10
// about existing X86 FMA3 opcodes, classifying and grouping them.
11
//
12
//===----------------------------------------------------------------------===//
13
14
#ifndef LLVM_LIB_TARGET_X86_UTILS_X86INSTRFMA3INFO_H
15
#define LLVM_LIB_TARGET_X86_UTILS_X86INSTRFMA3INFO_H
16
17
#include "X86.h"
18
#include "llvm/ADT/DenseMap.h"
19
#include <cassert>
20
#include <cstdint>
21
#include <set>
22
23
namespace llvm {
24
25
/// This class is used to group {132, 213, 231} forms of FMA opcodes together.
26
/// Each of the groups has either 3 opcodes, Also, each group has an attributes
27
/// field describing it.
28
struct X86InstrFMA3Group {
29
  /// An array holding 3 forms of FMA opcodes.
30
  uint16_t Opcodes[3];
31
32
  /// This bitfield specifies the attributes associated with the created
33
  /// FMA groups of opcodes.
34
  uint16_t Attributes;
35
36
  enum {
37
    Form132,
38
    Form213,
39
    Form231,
40
  };
41
42
  enum : uint16_t {
43
    /// This bit must be set in the 'Attributes' field of FMA group if such
44
    /// group of FMA opcodes consists of FMA intrinsic opcodes.
45
    Intrinsic = 0x1,
46
47
    /// This bit must be set in the 'Attributes' field of FMA group if such
48
    /// group of FMA opcodes consists of AVX512 opcodes accepting a k-mask and
49
    /// passing the elements from the 1st operand to the result of the operation
50
    /// when the correpondings bits in the k-mask are unset.
51
    KMergeMasked = 0x2,
52
53
    /// This bit must be set in the 'Attributes' field of FMA group if such
54
    /// group of FMA opcodes consists of AVX512 opcodes accepting a k-zeromask.
55
    KZeroMasked = 0x4,
56
  };
57
58
  /// Returns the 132 form of FMA opcode.
59
6.97k
  unsigned get132Opcode() const {
60
6.97k
    return Opcodes[Form132];
61
6.97k
  }
62
63
  /// Returns the 213 form of FMA opcode.
64
6.97k
  unsigned get213Opcode() const {
65
6.97k
    return Opcodes[Form213];
66
6.97k
  }
67
68
  /// Returns the 231 form of FMA opcode.
69
6.97k
  unsigned get231Opcode() const {
70
6.97k
    return Opcodes[Form231];
71
6.97k
  }
72
73
  /// Returns true iff the group of FMA opcodes holds intrinsic opcodes.
74
13.5k
  bool isIntrinsic() const { return (Attributes & Intrinsic) != 0; }
75
76
  /// Returns true iff the group of FMA opcodes holds k-merge-masked opcodes.
77
0
  bool isKMergeMasked() const {
78
0
    return (Attributes & KMergeMasked) != 0;
79
0
  }
80
81
  /// Returns true iff the group of FMA opcodes holds k-zero-masked opcodes.
82
0
  bool isKZeroMasked() const { return (Attributes &KZeroMasked) != 0; }
83
84
  /// Returns true iff the group of FMA opcodes holds any of k-masked opcodes.
85
0
  bool isKMasked() const {
86
0
    return (Attributes & (KMergeMasked | KZeroMasked)) != 0;
87
0
  }
88
89
0
  bool operator<(const X86InstrFMA3Group &RHS) const {
90
0
    return Opcodes[0] < RHS.Opcodes[0];
91
0
  }
92
};
93
94
/// Returns a reference to a group of FMA3 opcodes to where the given
95
/// \p Opcode is included. If the given \p Opcode is not recognized as FMA3
96
/// and not included into any FMA3 group, then nullptr is returned.
97
const X86InstrFMA3Group *getFMA3Group(unsigned Opcode, uint64_t TSFlags);
98
99
} // end namespace llvm
100
101
#endif // LLVM_LIB_TARGET_X86_UTILS_X86INSTRFMA3INFO_H