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