WebAssemblyInstrInteger.td revision 344779 
1// WebAssemblyInstrInteger.td-WebAssembly Integer codegen -------*- tablegen -*-
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9///
10/// \file
11/// WebAssembly Integer operand code-gen constructs.
12///
13//===----------------------------------------------------------------------===//
14
15multiclass UnaryInt<SDNode node, string name, bits<32> i32Inst,
16                    bits<32> i64Inst> {
17  defm _I32 : I<(outs I32:$dst), (ins I32:$src), (outs), (ins),
18                [(set I32:$dst, (node I32:$src))],
19                !strconcat("i32.", !strconcat(name, "\t$dst, $src")),
20                !strconcat("i32.", name), i32Inst>;
21  defm _I64 : I<(outs I64:$dst), (ins I64:$src), (outs), (ins),
22                [(set I64:$dst, (node I64:$src))],
23                !strconcat("i64.", !strconcat(name, "\t$dst, $src")),
24                !strconcat("i64.", name), i64Inst>;
25}
26multiclass BinaryInt<SDNode node, string name, bits<32> i32Inst,
27                     bits<32> i64Inst> {
28  defm _I32 : I<(outs I32:$dst), (ins I32:$lhs, I32:$rhs), (outs), (ins),
29                [(set I32:$dst, (node I32:$lhs, I32:$rhs))],
30                !strconcat("i32.", !strconcat(name, "\t$dst, $lhs, $rhs")),
31                !strconcat("i32.", name), i32Inst>;
32  defm _I64 : I<(outs I64:$dst), (ins I64:$lhs, I64:$rhs), (outs), (ins),
33                [(set I64:$dst, (node I64:$lhs, I64:$rhs))],
34                !strconcat("i64.", !strconcat(name, "\t$dst, $lhs, $rhs")),
35                !strconcat("i64.", name), i64Inst>;
36}
37multiclass ComparisonInt<CondCode cond, string name, bits<32> i32Inst, bits<32> i64Inst> {
38  defm _I32 : I<(outs I32:$dst), (ins I32:$lhs, I32:$rhs), (outs), (ins),
39                [(set I32:$dst, (setcc I32:$lhs, I32:$rhs, cond))],
40                !strconcat("i32.", !strconcat(name, "\t$dst, $lhs, $rhs")),
41                !strconcat("i32.", name), i32Inst>;
42  defm _I64 : I<(outs I32:$dst), (ins I64:$lhs, I64:$rhs), (outs), (ins),
43                [(set I32:$dst, (setcc I64:$lhs, I64:$rhs, cond))],
44                !strconcat("i64.", !strconcat(name, "\t$dst, $lhs, $rhs")),
45                !strconcat("i64.", name), i64Inst>;
46}
47
48// The spaces after the names are for aesthetic purposes only, to make
49// operands line up vertically after tab expansion.
50let isCommutable = 1 in
51defm ADD : BinaryInt<add, "add ", 0x6a, 0x7c>;
52defm SUB : BinaryInt<sub, "sub ", 0x6b, 0x7d>;
53let isCommutable = 1 in
54defm MUL : BinaryInt<mul, "mul ", 0x6c, 0x7e>;
55// Divide and remainder trap on a zero denominator.
56let hasSideEffects = 1 in {
57defm DIV_S : BinaryInt<sdiv, "div_s", 0x6d, 0x7f>;
58defm DIV_U : BinaryInt<udiv, "div_u", 0x6e, 0x80>;
59defm REM_S : BinaryInt<srem, "rem_s", 0x6f, 0x81>;
60defm REM_U : BinaryInt<urem, "rem_u", 0x70, 0x82>;
61} // hasSideEffects = 1
62let isCommutable = 1 in {
63defm AND : BinaryInt<and, "and ", 0x71, 0x83>;
64defm OR : BinaryInt<or, "or  ", 0x72, 0x84>;
65defm XOR : BinaryInt<xor, "xor ", 0x73, 0x85>;
66} // isCommutable = 1
67defm SHL : BinaryInt<shl, "shl ", 0x74, 0x86>;
68defm SHR_S : BinaryInt<sra, "shr_s", 0x75, 0x87>;
69defm SHR_U : BinaryInt<srl, "shr_u", 0x76, 0x88>;
70defm ROTL : BinaryInt<rotl, "rotl", 0x77, 0x89>;
71defm ROTR : BinaryInt<rotr, "rotr", 0x78, 0x8a>;
72
73let isCommutable = 1 in {
74defm EQ : ComparisonInt<SETEQ, "eq  ", 0x46, 0x51>;
75defm NE : ComparisonInt<SETNE, "ne  ", 0x47, 0x52>;
76} // isCommutable = 1
77defm LT_S : ComparisonInt<SETLT,  "lt_s", 0x48, 0x53>;
78defm LT_U : ComparisonInt<SETULT, "lt_u", 0x49, 0x54>;
79defm GT_S : ComparisonInt<SETGT,  "gt_s", 0x4a, 0x55>;
80defm GT_U : ComparisonInt<SETUGT, "gt_u", 0x4b, 0x56>;
81defm LE_S : ComparisonInt<SETLE,  "le_s", 0x4c, 0x57>;
82defm LE_U : ComparisonInt<SETULE, "le_u", 0x4d, 0x58>;
83defm GE_S : ComparisonInt<SETGE,  "ge_s", 0x4e, 0x59>;
84defm GE_U : ComparisonInt<SETUGE, "ge_u", 0x4f, 0x5a>;
85
86defm CLZ : UnaryInt<ctlz, "clz ", 0x67, 0x79>;
87defm CTZ : UnaryInt<cttz, "ctz ", 0x68, 0x7a>;
88defm POPCNT : UnaryInt<ctpop, "popcnt", 0x69, 0x7b>;
89
90defm EQZ_I32 : I<(outs I32:$dst), (ins I32:$src), (outs), (ins),
91                 [(set I32:$dst, (setcc I32:$src, 0, SETEQ))],
92                 "i32.eqz \t$dst, $src", "i32.eqz", 0x45>;
93defm EQZ_I64 : I<(outs I32:$dst), (ins I64:$src), (outs), (ins),
94                 [(set I32:$dst, (setcc I64:$src, 0, SETEQ))],
95                 "i64.eqz \t$dst, $src", "i64.eqz", 0x50>;
96
97// Optimize away an explicit mask on a rotate count.
98def : Pat<(rotl I32:$lhs, (and I32:$rhs, 31)), (ROTL_I32 I32:$lhs, I32:$rhs)>;
99def : Pat<(rotr I32:$lhs, (and I32:$rhs, 31)), (ROTR_I32 I32:$lhs, I32:$rhs)>;
100def : Pat<(rotl I64:$lhs, (and I64:$rhs, 63)), (ROTL_I64 I64:$lhs, I64:$rhs)>;
101def : Pat<(rotr I64:$lhs, (and I64:$rhs, 63)), (ROTR_I64 I64:$lhs, I64:$rhs)>;
102
103defm SELECT_I32 : I<(outs I32:$dst), (ins I32:$lhs, I32:$rhs, I32:$cond),
104                    (outs), (ins),
105                    [(set I32:$dst, (select I32:$cond, I32:$lhs, I32:$rhs))],
106                    "i32.select\t$dst, $lhs, $rhs, $cond", "i32.select", 0x1b>;
107defm SELECT_I64 : I<(outs I64:$dst), (ins I64:$lhs, I64:$rhs, I32:$cond),
108                    (outs), (ins),
109                    [(set I64:$dst, (select I32:$cond, I64:$lhs, I64:$rhs))],
110                    "i64.select\t$dst, $lhs, $rhs, $cond", "i64.select", 0x1b>;
111
112// ISD::SELECT requires its operand to conform to getBooleanContents, but
113// WebAssembly's select interprets any non-zero value as true, so we can fold
114// a setne with 0 into a select.
115def : Pat<(select (i32 (setne I32:$cond, 0)), I32:$lhs, I32:$rhs),
116          (SELECT_I32 I32:$lhs, I32:$rhs, I32:$cond)>;
117def : Pat<(select (i32 (setne I32:$cond, 0)), I64:$lhs, I64:$rhs),
118          (SELECT_I64 I64:$lhs, I64:$rhs, I32:$cond)>;
119
120// And again, this time with seteq instead of setne and the arms reversed.
121def : Pat<(select (i32 (seteq I32:$cond, 0)), I32:$lhs, I32:$rhs),
122          (SELECT_I32 I32:$rhs, I32:$lhs, I32:$cond)>;
123def : Pat<(select (i32 (seteq I32:$cond, 0)), I64:$lhs, I64:$rhs),
124          (SELECT_I64 I64:$rhs, I64:$lhs, I32:$cond)>;
125