WebAssemblyInstrInteger.td revision 341825 
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
15let Defs = [ARGUMENTS] in {
16
17// The spaces after the names are for aesthetic purposes only, to make
18// operands line up vertically after tab expansion.
19let isCommutable = 1 in
20defm ADD : BinaryInt<add, "add ", 0x6a, 0x7c>;
21defm SUB : BinaryInt<sub, "sub ", 0x6b, 0x7d>;
22let isCommutable = 1 in
23defm MUL : BinaryInt<mul, "mul ", 0x6c, 0x7e>;
24// Divide and remainder trap on a zero denominator.
25let hasSideEffects = 1 in {
26defm DIV_S : BinaryInt<sdiv, "div_s", 0x6d, 0x7f>;
27defm DIV_U : BinaryInt<udiv, "div_u", 0x6e, 0x80>;
28defm REM_S : BinaryInt<srem, "rem_s", 0x6f, 0x81>;
29defm REM_U : BinaryInt<urem, "rem_u", 0x70, 0x82>;
30} // hasSideEffects = 1
31let isCommutable = 1 in {
32defm AND : BinaryInt<and, "and ", 0x71, 0x83>;
33defm OR : BinaryInt<or, "or  ", 0x72, 0x84>;
34defm XOR : BinaryInt<xor, "xor ", 0x73, 0x85>;
35} // isCommutable = 1
36defm SHL : BinaryInt<shl, "shl ", 0x74, 0x86>;
37defm SHR_S : BinaryInt<sra, "shr_s", 0x75, 0x87>;
38defm SHR_U : BinaryInt<srl, "shr_u", 0x76, 0x88>;
39defm ROTL : BinaryInt<rotl, "rotl", 0x77, 0x89>;
40defm ROTR : BinaryInt<rotr, "rotr", 0x78, 0x8a>;
41
42let isCommutable = 1 in {
43defm EQ : ComparisonInt<SETEQ, "eq  ", 0x46, 0x51>;
44defm NE : ComparisonInt<SETNE, "ne  ", 0x47, 0x52>;
45} // isCommutable = 1
46defm LT_S : ComparisonInt<SETLT,  "lt_s", 0x48, 0x53>;
47defm LT_U : ComparisonInt<SETULT, "lt_u", 0x49, 0x54>;
48defm GT_S : ComparisonInt<SETGT,  "gt_s", 0x4a, 0x55>;
49defm GT_U : ComparisonInt<SETUGT, "gt_u", 0x4b, 0x56>;
50defm LE_S : ComparisonInt<SETLE,  "le_s", 0x4c, 0x57>;
51defm LE_U : ComparisonInt<SETULE, "le_u", 0x4d, 0x58>;
52defm GE_S : ComparisonInt<SETGE,  "ge_s", 0x4e, 0x59>;
53defm GE_U : ComparisonInt<SETUGE, "ge_u", 0x4f, 0x5a>;
54
55defm CLZ : UnaryInt<ctlz, "clz ", 0x67, 0x79>;
56defm CTZ : UnaryInt<cttz, "ctz ", 0x68, 0x7a>;
57defm POPCNT : UnaryInt<ctpop, "popcnt", 0x69, 0x7b>;
58
59defm EQZ_I32 : I<(outs I32:$dst), (ins I32:$src), (outs), (ins),
60                 [(set I32:$dst, (setcc I32:$src, 0, SETEQ))],
61                 "i32.eqz \t$dst, $src", "i32.eqz", 0x45>;
62defm EQZ_I64 : I<(outs I32:$dst), (ins I64:$src), (outs), (ins),
63                 [(set I32:$dst, (setcc I64:$src, 0, SETEQ))],
64                 "i64.eqz \t$dst, $src", "i64.eqz", 0x50>;
65
66} // Defs = [ARGUMENTS]
67
68// Optimize away an explicit mask on a rotate count.
69def : Pat<(rotl I32:$lhs, (and I32:$rhs, 31)), (ROTL_I32 I32:$lhs, I32:$rhs)>;
70def : Pat<(rotr I32:$lhs, (and I32:$rhs, 31)), (ROTR_I32 I32:$lhs, I32:$rhs)>;
71def : Pat<(rotl I64:$lhs, (and I64:$rhs, 63)), (ROTL_I64 I64:$lhs, I64:$rhs)>;
72def : Pat<(rotr I64:$lhs, (and I64:$rhs, 63)), (ROTR_I64 I64:$lhs, I64:$rhs)>;
73
74let Defs = [ARGUMENTS] in {
75
76defm SELECT_I32 : I<(outs I32:$dst), (ins I32:$lhs, I32:$rhs, I32:$cond),
77                    (outs), (ins),
78                    [(set I32:$dst, (select I32:$cond, I32:$lhs, I32:$rhs))],
79                    "i32.select\t$dst, $lhs, $rhs, $cond", "i32.select", 0x1b>;
80defm SELECT_I64 : I<(outs I64:$dst), (ins I64:$lhs, I64:$rhs, I32:$cond),
81                    (outs), (ins),
82                    [(set I64:$dst, (select I32:$cond, I64:$lhs, I64:$rhs))],
83                    "i64.select\t$dst, $lhs, $rhs, $cond", "i64.select", 0x1b>;
84
85} // Defs = [ARGUMENTS]
86
87// ISD::SELECT requires its operand to conform to getBooleanContents, but
88// WebAssembly's select interprets any non-zero value as true, so we can fold
89// a setne with 0 into a select.
90def : Pat<(select (i32 (setne I32:$cond, 0)), I32:$lhs, I32:$rhs),
91          (SELECT_I32 I32:$lhs, I32:$rhs, I32:$cond)>;
92def : Pat<(select (i32 (setne I32:$cond, 0)), I64:$lhs, I64:$rhs),
93          (SELECT_I64 I64:$lhs, I64:$rhs, I32:$cond)>;
94
95// And again, this time with seteq instead of setne and the arms reversed.
96def : Pat<(select (i32 (seteq I32:$cond, 0)), I32:$lhs, I32:$rhs),
97          (SELECT_I32 I32:$rhs, I32:$lhs, I32:$cond)>;
98def : Pat<(select (i32 (seteq I32:$cond, 0)), I64:$lhs, I64:$rhs),
99          (SELECT_I64 I64:$rhs, I64:$lhs, I32:$cond)>;
100