1 //===-- X86InstrFoldTables.h - X86 Instruction Folding Tables ---*- 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 interface to query the X86 memory folding tables. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_LIB_TARGET_X86_X86INSTRFOLDTABLES_H 14 #define LLVM_LIB_TARGET_X86_X86INSTRFOLDTABLES_H 15 16 #include <cstdint> 17 #include "llvm/Support/X86FoldTablesUtils.h" 18 19 namespace llvm { 20 21 // This struct is used for both the folding and unfold tables. They KeyOp 22 // is used to determine the sorting order. 23 struct X86MemoryFoldTableEntry { 24 unsigned KeyOp; 25 unsigned DstOp; 26 uint16_t Flags; 27 28 bool operator<(const X86MemoryFoldTableEntry &RHS) const { 29 return KeyOp < RHS.KeyOp; 30 } 31 bool operator==(const X86MemoryFoldTableEntry &RHS) const { 32 return KeyOp == RHS.KeyOp; 33 } 34 friend bool operator<(const X86MemoryFoldTableEntry &TE, unsigned Opcode) { 35 return TE.KeyOp < Opcode; 36 } 37 }; 38 39 // Look up the memory folding table entry for folding a load and a store into 40 // operand 0. 41 const X86MemoryFoldTableEntry *lookupTwoAddrFoldTable(unsigned RegOp); 42 43 // Look up the memory folding table entry for folding a load or store with 44 // operand OpNum. 45 const X86MemoryFoldTableEntry *lookupFoldTable(unsigned RegOp, unsigned OpNum); 46 47 // Look up the memory unfolding table entry for this instruction. 48 const X86MemoryFoldTableEntry *lookupUnfoldTable(unsigned MemOp); 49 50 // Look up the broadcast memory folding table entry for this instruction from 51 // the regular memory instruction. 52 const X86MemoryFoldTableEntry *lookupBroadcastFoldTable(unsigned MemOp, 53 unsigned BroadcastBits); 54 55 } // namespace llvm 56 57 #endif 58