1// WebAssemblyInstrMemory.td-WebAssembly Memory codegen support -*- 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/// \brief WebAssembly Memory operand code-gen constructs.
12///
13//===----------------------------------------------------------------------===//
14
15// FIXME:
16//  - HasAddr64
17//  - WebAssemblyTargetLowering::isLegalAddressingMode
18//  - WebAssemblyTargetLowering having to do with atomics
19//  - Each has optional alignment and immediate byte offset.
20
21// WebAssembly has i8/i16/i32/i64/f32/f64 memory types, but doesn't have i8/i16
22// local types. These memory-only types instead zero- or sign-extend into local
23// types when loading, and truncate when storing.
24
25// Basic load.
26def LOAD_I32 : I<(outs I32:$dst), (ins I32:$addr),
27                 [(set I32:$dst, (load I32:$addr))]>;
28def LOAD_I64 : I<(outs I64:$dst), (ins I32:$addr),
29                 [(set I64:$dst, (load I32:$addr))]>;
30def LOAD_F32 : I<(outs F32:$dst), (ins I32:$addr),
31                 [(set F32:$dst, (load I32:$addr))]>;
32def LOAD_F64 : I<(outs F64:$dst), (ins I32:$addr),
33                 [(set F64:$dst, (load I32:$addr))]>;
34
35// Extending load.
36def LOAD8_S_I32  : I<(outs I32:$dst), (ins I32:$addr),
37                     [(set I32:$dst, (sextloadi8 I32:$addr))]>;
38def LOAD8_U_I32  : I<(outs I32:$dst), (ins I32:$addr),
39                     [(set I32:$dst, (zextloadi8 I32:$addr))]>;
40def LOAD16_S_I32 : I<(outs I32:$dst), (ins I32:$addr),
41                     [(set I32:$dst, (sextloadi16 I32:$addr))]>;
42def LOAD16_U_I32 : I<(outs I32:$dst), (ins I32:$addr),
43                     [(set I32:$dst, (zextloadi16 I32:$addr))]>;
44def LOAD8_S_I64  : I<(outs I64:$dst), (ins I32:$addr),
45                     [(set I64:$dst, (sextloadi8 I32:$addr))]>;
46def LOAD8_U_I64  : I<(outs I64:$dst), (ins I32:$addr),
47                     [(set I64:$dst, (zextloadi8 I32:$addr))]>;
48def LOAD16_S_I64 : I<(outs I64:$dst), (ins I32:$addr),
49                     [(set I64:$dst, (sextloadi16 I32:$addr))]>;
50def LOAD16_U_I64 : I<(outs I64:$dst), (ins I32:$addr),
51                     [(set I64:$dst, (zextloadi16 I32:$addr))]>;
52def LOAD32_S_I64 : I<(outs I64:$dst), (ins I32:$addr),
53                     [(set I64:$dst, (sextloadi32 I32:$addr))]>;
54def LOAD32_U_I64 : I<(outs I64:$dst), (ins I32:$addr),
55                     [(set I64:$dst, (zextloadi32 I32:$addr))]>;
56
57// "Don't care" extending load become zero-extending load.
58def : Pat<(i32 (extloadi8 I32:$addr)),  (LOAD8_U_I32 $addr)>;
59def : Pat<(i32 (extloadi16 I32:$addr)), (LOAD16_U_I32 $addr)>;
60def : Pat<(i64 (extloadi8 I32:$addr)),  (LOAD8_U_I64 $addr)>;
61def : Pat<(i64 (extloadi16 I32:$addr)), (LOAD16_U_I64 $addr)>;
62def : Pat<(i64 (extloadi32 I32:$addr)), (LOAD32_U_I64 $addr)>;
63
64// Basic store.
65// Note: WebAssembly inverts SelectionDAG's usual operand order.
66def STORE_I32  : I<(outs), (ins I32:$addr, I32:$val),
67                   [(store i32:$val, I32:$addr)]>;
68def STORE_I64  : I<(outs), (ins I32:$addr, I64:$val),
69                   [(store i64:$val, I32:$addr)]>;
70def STORE_F32  : I<(outs), (ins I32:$addr, F32:$val),
71                   [(store f32:$val, I32:$addr)]>;
72def STORE_F64  : I<(outs), (ins I32:$addr, F64:$val),
73                   [(store f64:$val, I32:$addr)]>;
74
75// Truncating store.
76def STORE8_I32  : I<(outs), (ins I32:$addr, I32:$val),
77                    [(truncstorei8 I32:$val, I32:$addr)]>;
78def STORE16_I32 : I<(outs), (ins I32:$addr, I32:$val),
79                    [(truncstorei16 I32:$val, I32:$addr)]>;
80def STORE8_I64  : I<(outs), (ins I32:$addr, I64:$val),
81                    [(truncstorei8 I64:$val, I32:$addr)]>;
82def STORE16_I64 : I<(outs), (ins I32:$addr, I64:$val),
83                    [(truncstorei16 I64:$val, I32:$addr)]>;
84def STORE32_I64 : I<(outs), (ins I32:$addr, I64:$val),
85                    [(truncstorei32 I64:$val, I32:$addr)]>;
86
87// Page size.
88def page_size_I32 : I<(outs I32:$dst), (ins),
89                      [(set I32:$dst, (int_wasm_page_size))]>,
90                    Requires<[HasAddr32]>;
91def page_size_I64 : I<(outs I64:$dst), (ins),
92                      [(set I64:$dst, (int_wasm_page_size))]>,
93                    Requires<[HasAddr64]>;
94
95// Memory size.
96def memory_size_I32 : I<(outs I32:$dst), (ins),
97                        [(set I32:$dst, (int_wasm_memory_size))]>,
98                      Requires<[HasAddr32]>;
99def memory_size_I64 : I<(outs I64:$dst), (ins),
100                        [(set I64:$dst, (int_wasm_memory_size))]>,
101                      Requires<[HasAddr64]>;
102
103// Resize memory.
104def resize_memory_I32 : I<(outs), (ins I32:$delta),
105                          [(int_wasm_resize_memory I32:$delta)]>,
106                        Requires<[HasAddr32]>;
107def resize_memory_I64 : I<(outs), (ins I64:$delta),
108                          [(int_wasm_resize_memory I64:$delta)]>,
109                        Requires<[HasAddr64]>;
110