1//=== ---- PPCMacroFusion.def - PowerPC MacroFuson Candidates -v-*- 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 descriptions of the macro-fusion pair for PowerPC.
10//
11//===----------------------------------------------------------------------===//
12
13// NOTE: NO INCLUDE GUARD DESIRED!
14
15#ifndef FUSION_FEATURE
16
17// Each FUSION_FEATURE is assigned with one TYPE, and can be enabled/disabled
18// by HAS_FEATURE. The instructions pair is fusable only when the opcode
19// of the first instruction is in OPSET1, and the second instruction opcode is
20// in OPSET2. And if DEP_OP_IDX >=0, we will check the result of first OP is
21// the operand of the second op with DEP_OP_IDX as its operand index. We assume
22// that the result of the first op is its operand zero.
23#define FUSION_FEATURE(TYPE, HAS_FEATURE, DEP_OP_IDX, OPSET1, OPSET2)
24
25#endif
26
27#ifndef FUSION_OP_SET
28#define FUSION_OP_SET(...) __VA_ARGS__
29#endif
30
31// Power8 User Manual Section 10.1.12, Instruction Fusion
32// {addi} followed by one of these {lxvd2x, lxvw4x, lxvdsx, lvebx, lvehx,
33// lvewx, lvx, lxsdx}
34FUSION_FEATURE(AddiLoad, hasAddiLoadFusion, 2, \
35               FUSION_OP_SET(ADDI, ADDI8, ADDItocL), \
36               FUSION_OP_SET(LXVD2X, LXVW4X, LXVDSX, LVEBX, LVEHX, LVEWX, \
37                             LVX, LXSDX))
38
39// {addis) followed by one of these {ld, lbz, lhz, lwz}
40FUSION_FEATURE(AddisLoad, hasAddisLoadFusion, 2, \
41               FUSION_OP_SET(ADDIS, ADDIS8, ADDIStocHA8), \
42               FUSION_OP_SET(LD, LBZ, LBZ8, LHZ, LHZ8, LWZ, LWZ8))
43
44#undef FUSION_FEATURE
45#undef FUSION_OP_SET
46