98 lines
3.2 KiB
C
98 lines
3.2 KiB
C
|
//===- X86InstrFMA3Info.h - X86 FMA3 Instruction Information ----*- C++ -*-===//
|
||
|
|
//
|
||
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
||
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
||
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
//
|
||
|
|
// This file contains the implementation of the classes providing information
|
||
|
|
// about existing X86 FMA3 opcodes, classifying and grouping them.
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
|
||
|
|
#ifndef LLVM_LIB_TARGET_X86_UTILS_X86INSTRFMA3INFO_H
|
||
|
|
#define LLVM_LIB_TARGET_X86_UTILS_X86INSTRFMA3INFO_H
|
||
|
|
|
||
|
|
#include <cstdint>
|
||
|
|
|
||
|
|
namespace llvm {
|
||
|
|
|
||
|
|
/// This class is used to group {132, 213, 231} forms of FMA opcodes together.
|
||
|
|
/// Each of the groups has either 3 opcodes, Also, each group has an attributes
|
||
|
|
/// field describing it.
|
||
|
|
struct X86InstrFMA3Group {
|
||
|
|
/// An array holding 3 forms of FMA opcodes.
|
||
|
|
uint16_t Opcodes[3];
|
||
|
|
|
||
|
|
/// This bitfield specifies the attributes associated with the created
|
||
|
|
/// FMA groups of opcodes.
|
||
|
|
uint16_t Attributes;
|
||
|
|
|
||
|
|
enum {
|
||
|
|
Form132,
|
||
|
|
Form213,
|
||
|
|
Form231,
|
||
|
|
};
|
||
|
|
|
||
|
|
enum : uint16_t {
|
||
|
|
/// This bit must be set in the 'Attributes' field of FMA group if such
|
||
|
|
/// group of FMA opcodes consists of FMA intrinsic opcodes.
|
||
|
|
Intrinsic = 0x1,
|
||
|
|
|
||
|
|
/// This bit must be set in the 'Attributes' field of FMA group if such
|
||
|
|
/// group of FMA opcodes consists of AVX512 opcodes accepting a k-mask and
|
||
|
|
/// passing the elements from the 1st operand to the result of the operation
|
||
|
|
/// when the correpondings bits in the k-mask are unset.
|
||
|
|
KMergeMasked = 0x2,
|
||
|
|
|
||
|
|
/// This bit must be set in the 'Attributes' field of FMA group if such
|
||
|
|
/// group of FMA opcodes consists of AVX512 opcodes accepting a k-zeromask.
|
||
|
|
KZeroMasked = 0x4,
|
||
|
|
};
|
||
|
|
|
||
|
|
/// Returns the 132 form of FMA opcode.
|
||
|
|
unsigned get132Opcode() const {
|
||
|
|
return Opcodes[Form132];
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Returns the 213 form of FMA opcode.
|
||
|
|
unsigned get213Opcode() const {
|
||
|
|
return Opcodes[Form213];
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Returns the 231 form of FMA opcode.
|
||
|
|
unsigned get231Opcode() const {
|
||
|
|
return Opcodes[Form231];
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Returns true iff the group of FMA opcodes holds intrinsic opcodes.
|
||
|
|
bool isIntrinsic() const { return (Attributes & Intrinsic) != 0; }
|
||
|
|
|
||
|
|
/// Returns true iff the group of FMA opcodes holds k-merge-masked opcodes.
|
||
|
|
bool isKMergeMasked() const {
|
||
|
|
return (Attributes & KMergeMasked) != 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Returns true iff the group of FMA opcodes holds k-zero-masked opcodes.
|
||
|
|
bool isKZeroMasked() const { return (Attributes &KZeroMasked) != 0; }
|
||
|
|
|
||
|
|
/// Returns true iff the group of FMA opcodes holds any of k-masked opcodes.
|
||
|
|
bool isKMasked() const {
|
||
|
|
return (Attributes & (KMergeMasked | KZeroMasked)) != 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool operator<(const X86InstrFMA3Group &RHS) const {
|
||
|
|
return Opcodes[0] < RHS.Opcodes[0];
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
/// Returns a reference to a group of FMA3 opcodes to where the given
|
||
|
|
/// \p Opcode is included. If the given \p Opcode is not recognized as FMA3
|
||
|
|
/// and not included into any FMA3 group, then nullptr is returned.
|
||
|
|
const X86InstrFMA3Group *getFMA3Group(unsigned Opcode, uint64_t TSFlags);
|
||
|
|
|
||
|
|
} // end namespace llvm
|
||
|
|
|
||
|
|
#endif // LLVM_LIB_TARGET_X86_UTILS_X86INSTRFMA3INFO_H
|