1 // WebAssemblyInstrInteger.td-WebAssembly Integer codegen -------*- tablegen -*-
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
7 //===----------------------------------------------------------------------===//
10 /// WebAssembly Integer operand code-gen constructs.
12 //===----------------------------------------------------------------------===//
14 multiclass UnaryInt<SDNode node, string name, bits<32> i32Inst,
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, $src")),
23 !strconcat("i64.", name), i64Inst>;
25 multiclass BinaryInt<SDNode node, string name, bits<32> i32Inst,
27 defm _I32 : I<(outs I32:$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, $rhs")),
34 !strconcat("i64.", name), i64Inst>;
36 multiclass ComparisonInt<CondCode cond, string name, bits<32> i32Inst, bits<32> i64Inst> {
37 defm _I32 : I<(outs I32:$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, $rhs")),
44 !strconcat("i64.", name), i64Inst>;
47 // The spaces after the names are for aesthetic purposes only, to make
48 // operands line up vertically after tab expansion.
49 let isCommutable = 1 in
50 defm ADD : BinaryInt<add, "add ", 0x6a, 0x7c>;
51 defm SUB : BinaryInt<sub, "sub ", 0x6b, 0x7d>;
52 let isCommutable = 1 in
53 defm MUL : BinaryInt<mul, "mul ", 0x6c, 0x7e>;
54 // Divide and remainder trap on a zero denominator.
55 let hasSideEffects = 1 in {
56 defm DIV_S : BinaryInt<sdiv, "div_s", 0x6d, 0x7f>;
57 defm DIV_U : BinaryInt<udiv, "div_u", 0x6e, 0x80>;
58 defm REM_S : BinaryInt<srem, "rem_s", 0x6f, 0x81>;
59 defm REM_U : BinaryInt<urem, "rem_u", 0x70, 0x82>;
60 } // hasSideEffects = 1
61 let isCommutable = 1 in {
62 defm AND : BinaryInt<and, "and ", 0x71, 0x83>;
63 defm OR : BinaryInt<or, "or ", 0x72, 0x84>;
64 defm XOR : BinaryInt<xor, "xor ", 0x73, 0x85>;
66 defm SHL : BinaryInt<shl, "shl ", 0x74, 0x86>;
67 defm SHR_S : BinaryInt<sra, "shr_s", 0x75, 0x87>;
68 defm SHR_U : BinaryInt<srl, "shr_u", 0x76, 0x88>;
69 defm ROTL : BinaryInt<rotl, "rotl", 0x77, 0x89>;
70 defm ROTR : BinaryInt<rotr, "rotr", 0x78, 0x8a>;
72 let isCommutable = 1 in {
73 defm EQ : ComparisonInt<SETEQ, "eq ", 0x46, 0x51>;
74 defm NE : ComparisonInt<SETNE, "ne ", 0x47, 0x52>;
76 defm LT_S : ComparisonInt<SETLT, "lt_s", 0x48, 0x53>;
77 defm LT_U : ComparisonInt<SETULT, "lt_u", 0x49, 0x54>;
78 defm GT_S : ComparisonInt<SETGT, "gt_s", 0x4a, 0x55>;
79 defm GT_U : ComparisonInt<SETUGT, "gt_u", 0x4b, 0x56>;
80 defm LE_S : ComparisonInt<SETLE, "le_s", 0x4c, 0x57>;
81 defm LE_U : ComparisonInt<SETULE, "le_u", 0x4d, 0x58>;
82 defm GE_S : ComparisonInt<SETGE, "ge_s", 0x4e, 0x59>;
83 defm GE_U : ComparisonInt<SETUGE, "ge_u", 0x4f, 0x5a>;
85 defm CLZ : UnaryInt<ctlz, "clz ", 0x67, 0x79>;
86 defm CTZ : UnaryInt<cttz, "ctz ", 0x68, 0x7a>;
87 defm POPCNT : UnaryInt<ctpop, "popcnt", 0x69, 0x7b>;
89 defm EQZ_I32 : I<(outs I32:$dst), (ins I32:$src), (outs), (ins),
90 [(set I32:$dst, (setcc I32:$src, 0, SETEQ))],
91 "i32.eqz \t$dst, $src", "i32.eqz", 0x45>;
92 defm EQZ_I64 : I<(outs I32:$dst), (ins I64:$src), (outs), (ins),
93 [(set I32:$dst, (setcc I64:$src, 0, SETEQ))],
94 "i64.eqz \t$dst, $src", "i64.eqz", 0x50>;
96 // Optimize away an explicit mask on a shift count.
97 def : Pat<(shl I32:$lhs, (and I32:$rhs, 31)), (SHL_I32 I32:$lhs, I32:$rhs)>;
98 def : Pat<(sra I32:$lhs, (and I32:$rhs, 31)), (SHR_S_I32 I32:$lhs, I32:$rhs)>;
99 def : Pat<(srl I32:$lhs, (and I32:$rhs, 31)), (SHR_U_I32 I32:$lhs, I32:$rhs)>;
100 def : Pat<(shl I64:$lhs, (and I64:$rhs, 63)), (SHL_I64 I64:$lhs, I64:$rhs)>;
101 def : Pat<(sra I64:$lhs, (and I64:$rhs, 63)), (SHR_S_I64 I64:$lhs, I64:$rhs)>;
102 def : Pat<(srl I64:$lhs, (and I64:$rhs, 63)), (SHR_U_I64 I64:$lhs, I64:$rhs)>;
104 // Optimize away an explicit mask on a rotate count.
105 def : Pat<(rotl I32:$lhs, (and I32:$rhs, 31)), (ROTL_I32 I32:$lhs, I32:$rhs)>;
106 def : Pat<(rotr I32:$lhs, (and I32:$rhs, 31)), (ROTR_I32 I32:$lhs, I32:$rhs)>;
107 def : Pat<(rotl I64:$lhs, (and I64:$rhs, 63)), (ROTL_I64 I64:$lhs, I64:$rhs)>;
108 def : Pat<(rotr I64:$lhs, (and I64:$rhs, 63)), (ROTR_I64 I64:$lhs, I64:$rhs)>;
110 defm SELECT_I32 : I<(outs I32:$dst), (ins I32:$lhs, I32:$rhs, I32:$cond),
112 [(set I32:$dst, (select I32:$cond, I32:$lhs, I32:$rhs))],
113 "i32.select\t$dst, $lhs, $rhs, $cond", "i32.select", 0x1b>;
114 defm SELECT_I64 : I<(outs I64:$dst), (ins I64:$lhs, I64:$rhs, I32:$cond),
116 [(set I64:$dst, (select I32:$cond, I64:$lhs, I64:$rhs))],
117 "i64.select\t$dst, $lhs, $rhs, $cond", "i64.select", 0x1b>;
119 // ISD::SELECT requires its operand to conform to getBooleanContents, but
120 // WebAssembly's select interprets any non-zero value as true, so we can fold
121 // a setne with 0 into a select.
122 def : Pat<(select (i32 (setne I32:$cond, 0)), I32:$lhs, I32:$rhs),
123 (SELECT_I32 I32:$lhs, I32:$rhs, I32:$cond)>;
124 def : Pat<(select (i32 (setne I32:$cond, 0)), I64:$lhs, I64:$rhs),
125 (SELECT_I64 I64:$lhs, I64:$rhs, I32:$cond)>;
127 // And again, this time with seteq instead of setne and the arms reversed.
128 def : Pat<(select (i32 (seteq I32:$cond, 0)), I32:$lhs, I32:$rhs),
129 (SELECT_I32 I32:$rhs, I32:$lhs, I32:$cond)>;
130 def : Pat<(select (i32 (seteq I32:$cond, 0)), I64:$lhs, I64:$rhs),
131 (SELECT_I64 I64:$rhs, I64:$lhs, I32:$cond)>;