1// WebAssemblyInstrInteger.td-WebAssembly Integer codegen -------*- tablegen -*-
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/// \file
10/// WebAssembly Integer operand code-gen constructs.
11///
12//===----------------------------------------------------------------------===//
13
14multiclass UnaryInt<SDNode node, string name, bits<32> i32Inst,
15                    bits<32> i64Inst> {
16  defm _I32 : I<(outs I32:$dst), (ins I32:$src), (outs), (ins),
17                [(set I32:$dst, (node I32:$src))],
18                !strconcat("i32.", !strconcat(name, "\t$dst, $src")),
19                !strconcat("i32.", name), i32Inst>;
20  defm _I64 : I<(outs I64:$dst), (ins I64:$src), (outs), (ins),
21                [(set I64:$dst, (node I64:$src))],
22                !strconcat("i64.", !strconcat(name, "\t$dst, $src")),
23                !strconcat("i64.", name), i64Inst>;
24}
25multiclass BinaryInt<SDNode node, string name, bits<32> i32Inst,
26                     bits<32> i64Inst> {
27  defm _I32 : I<(outs I32:$dst), (ins I32:$lhs, I32:$rhs), (outs), (ins),
28                [(set I32:$dst, (node I32:$lhs, I32:$rhs))],
29                !strconcat("i32.", !strconcat(name, "\t$dst, $lhs, $rhs")),
30                !strconcat("i32.", name), i32Inst>;
31  defm _I64 : I<(outs I64:$dst), (ins I64:$lhs, I64:$rhs), (outs), (ins),
32                [(set I64:$dst, (node I64:$lhs, I64:$rhs))],
33                !strconcat("i64.", !strconcat(name, "\t$dst, $lhs, $rhs")),
34                !strconcat("i64.", name), i64Inst>;
35}
36multiclass ComparisonInt<CondCode cond, string name, bits<32> i32Inst, bits<32> i64Inst> {
37  defm _I32 : I<(outs I32:$dst), (ins I32:$lhs, I32:$rhs), (outs), (ins),
38                [(set I32:$dst, (setcc I32:$lhs, I32:$rhs, cond))],
39                !strconcat("i32.", !strconcat(name, "\t$dst, $lhs, $rhs")),
40                !strconcat("i32.", name), i32Inst>;
41  defm _I64 : I<(outs I32:$dst), (ins I64:$lhs, I64:$rhs), (outs), (ins),
42                [(set I32:$dst, (setcc I64:$lhs, I64:$rhs, cond))],
43                !strconcat("i64.", !strconcat(name, "\t$dst, $lhs, $rhs")),
44                !strconcat("i64.", name), i64Inst>;
45}
46
47// The spaces after the names are for aesthetic purposes only, to make
48// operands line up vertically after tab expansion.
49let isCommutable = 1 in
50defm ADD : BinaryInt<add, "add ", 0x6a, 0x7c>;
51defm SUB : BinaryInt<sub, "sub ", 0x6b, 0x7d>;
52let isCommutable = 1 in
53defm MUL : BinaryInt<mul, "mul ", 0x6c, 0x7e>;
54// Divide and remainder trap on a zero denominator.
55let hasSideEffects = 1 in {
56defm DIV_S : BinaryInt<sdiv, "div_s", 0x6d, 0x7f>;
57defm DIV_U : BinaryInt<udiv, "div_u", 0x6e, 0x80>;
58defm REM_S : BinaryInt<srem, "rem_s", 0x6f, 0x81>;
59defm REM_U : BinaryInt<urem, "rem_u", 0x70, 0x82>;
60} // hasSideEffects = 1
61let isCommutable = 1 in {
62defm AND : BinaryInt<and, "and ", 0x71, 0x83>;
63defm OR : BinaryInt<or, "or  ", 0x72, 0x84>;
64defm XOR : BinaryInt<xor, "xor ", 0x73, 0x85>;
65} // isCommutable = 1
66defm SHL : BinaryInt<shl, "shl ", 0x74, 0x86>;
67defm SHR_S : BinaryInt<sra, "shr_s", 0x75, 0x87>;
68defm SHR_U : BinaryInt<srl, "shr_u", 0x76, 0x88>;
69defm ROTL : BinaryInt<rotl, "rotl", 0x77, 0x89>;
70defm ROTR : BinaryInt<rotr, "rotr", 0x78, 0x8a>;
71
72let isCommutable = 1 in {
73defm EQ : ComparisonInt<SETEQ, "eq  ", 0x46, 0x51>;
74defm NE : ComparisonInt<SETNE, "ne  ", 0x47, 0x52>;
75} // isCommutable = 1
76defm LT_S : ComparisonInt<SETLT,  "lt_s", 0x48, 0x53>;
77defm LT_U : ComparisonInt<SETULT, "lt_u", 0x49, 0x54>;
78defm GT_S : ComparisonInt<SETGT,  "gt_s", 0x4a, 0x55>;
79defm GT_U : ComparisonInt<SETUGT, "gt_u", 0x4b, 0x56>;
80defm LE_S : ComparisonInt<SETLE,  "le_s", 0x4c, 0x57>;
81defm LE_U : ComparisonInt<SETULE, "le_u", 0x4d, 0x58>;
82defm GE_S : ComparisonInt<SETGE,  "ge_s", 0x4e, 0x59>;
83defm GE_U : ComparisonInt<SETUGE, "ge_u", 0x4f, 0x5a>;
84
85defm CLZ : UnaryInt<ctlz, "clz ", 0x67, 0x79>;
86defm CTZ : UnaryInt<cttz, "ctz ", 0x68, 0x7a>;
87defm POPCNT : UnaryInt<ctpop, "popcnt", 0x69, 0x7b>;
88
89defm EQZ_I32 : I<(outs I32:$dst), (ins I32:$src), (outs), (ins),
90                 [(set I32:$dst, (setcc I32:$src, 0, SETEQ))],
91                 "i32.eqz \t$dst, $src", "i32.eqz", 0x45>;
92defm EQZ_I64 : I<(outs I32:$dst), (ins I64:$src), (outs), (ins),
93                 [(set I32:$dst, (setcc I64:$src, 0, SETEQ))],
94                 "i64.eqz \t$dst, $src", "i64.eqz", 0x50>;
95
96// Optimize away an explicit mask on a rotate count.
97def : Pat<(rotl I32:$lhs, (and I32:$rhs, 31)), (ROTL_I32 I32:$lhs, I32:$rhs)>;
98def : Pat<(rotr I32:$lhs, (and I32:$rhs, 31)), (ROTR_I32 I32:$lhs, I32:$rhs)>;
99def : Pat<(rotl I64:$lhs, (and I64:$rhs, 63)), (ROTL_I64 I64:$lhs, I64:$rhs)>;
100def : Pat<(rotr I64:$lhs, (and I64:$rhs, 63)), (ROTR_I64 I64:$lhs, I64:$rhs)>;
101
102defm SELECT_I32 : I<(outs I32:$dst), (ins I32:$lhs, I32:$rhs, I32:$cond),
103                    (outs), (ins),
104                    [(set I32:$dst, (select I32:$cond, I32:$lhs, I32:$rhs))],
105                    "i32.select\t$dst, $lhs, $rhs, $cond", "i32.select", 0x1b>;
106defm SELECT_I64 : I<(outs I64:$dst), (ins I64:$lhs, I64:$rhs, I32:$cond),
107                    (outs), (ins),
108                    [(set I64:$dst, (select I32:$cond, I64:$lhs, I64:$rhs))],
109                    "i64.select\t$dst, $lhs, $rhs, $cond", "i64.select", 0x1b>;
110
111// ISD::SELECT requires its operand to conform to getBooleanContents, but
112// WebAssembly's select interprets any non-zero value as true, so we can fold
113// a setne with 0 into a select.
114def : Pat<(select (i32 (setne I32:$cond, 0)), I32:$lhs, I32:$rhs),
115          (SELECT_I32 I32:$lhs, I32:$rhs, I32:$cond)>;
116def : Pat<(select (i32 (setne I32:$cond, 0)), I64:$lhs, I64:$rhs),
117          (SELECT_I64 I64:$lhs, I64:$rhs, I32:$cond)>;
118
119// And again, this time with seteq instead of setne and the arms reversed.
120def : Pat<(select (i32 (seteq I32:$cond, 0)), I32:$lhs, I32:$rhs),
121          (SELECT_I32 I32:$rhs, I32:$lhs, I32:$cond)>;
122def : Pat<(select (i32 (seteq I32:$cond, 0)), I64:$lhs, I64:$rhs),
123          (SELECT_I64 I64:$rhs, I64:$lhs, I32:$cond)>;
124