[ARM] MVE integer min and max
[llvm-core.git] / lib / Target / X86 / X86InstrFoldTables.h
blob419baf98f61df5dd6c7e4aca030e560669cb322b
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.
11 //===----------------------------------------------------------------------===//
13 #ifndef LLVM_LIB_TARGET_X86_X86INSTRFOLDTABLES_H
14 #define LLVM_LIB_TARGET_X86_X86INSTRFOLDTABLES_H
16 #include "llvm/Support/DataTypes.h"
18 namespace llvm {
20 enum {
21 // Select which memory operand is being unfolded.
22 // (stored in bits 0 - 3)
23 TB_INDEX_0 = 0,
24 TB_INDEX_1 = 1,
25 TB_INDEX_2 = 2,
26 TB_INDEX_3 = 3,
27 TB_INDEX_4 = 4,
28 TB_INDEX_MASK = 0xf,
30 // Do not insert the reverse map (MemOp -> RegOp) into the table.
31 // This may be needed because there is a many -> one mapping.
32 TB_NO_REVERSE = 1 << 4,
34 // Do not insert the forward map (RegOp -> MemOp) into the table.
35 // This is needed for Native Client, which prohibits branch
36 // instructions from using a memory operand.
37 TB_NO_FORWARD = 1 << 5,
39 TB_FOLDED_LOAD = 1 << 6,
40 TB_FOLDED_STORE = 1 << 7,
42 // Minimum alignment required for load/store.
43 // Used for RegOp->MemOp conversion.
44 // (stored in bits 8 - 15)
45 TB_ALIGN_SHIFT = 8,
46 TB_ALIGN_NONE = 0 << TB_ALIGN_SHIFT,
47 TB_ALIGN_16 = 16 << TB_ALIGN_SHIFT,
48 TB_ALIGN_32 = 32 << TB_ALIGN_SHIFT,
49 TB_ALIGN_64 = 64 << TB_ALIGN_SHIFT,
50 TB_ALIGN_MASK = 0xff << TB_ALIGN_SHIFT
53 // This struct is used for both the folding and unfold tables. They KeyOp
54 // is used to determine the sorting order.
55 struct X86MemoryFoldTableEntry {
56 uint16_t KeyOp;
57 uint16_t DstOp;
58 uint16_t Flags;
60 bool operator<(const X86MemoryFoldTableEntry &RHS) const {
61 return KeyOp < RHS.KeyOp;
63 bool operator==(const X86MemoryFoldTableEntry &RHS) const {
64 return KeyOp == RHS.KeyOp;
66 friend bool operator<(const X86MemoryFoldTableEntry &TE, unsigned Opcode) {
67 return TE.KeyOp < Opcode;
71 // Look up the memory folding table entry for folding a load and a store into
72 // operand 0.
73 const X86MemoryFoldTableEntry *lookupTwoAddrFoldTable(unsigned RegOp);
75 // Look up the memory folding table entry for folding a load or store with
76 // operand OpNum.
77 const X86MemoryFoldTableEntry *lookupFoldTable(unsigned RegOp, unsigned OpNum);
79 // Look up the memory unfolding table entry for this instruction.
80 const X86MemoryFoldTableEntry *lookupUnfoldTable(unsigned MemOp);
82 } // namespace llvm
84 #endif