1; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt | FileCheck %s
2; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -fast-isel -fast-isel-abort=1 | FileCheck %s
3
4; Test that basic call operations assemble as expected.
5
6target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
7target triple = "wasm32-unknown-unknown"
8
9declare i32 @i32_nullary()
10declare i32 @i32_unary(i32)
11declare i32 @i32_binary(i32, i32)
12declare i64 @i64_nullary()
13declare float @float_nullary()
14declare double @double_nullary()
15declare void @void_nullary()
16
17; CHECK-LABEL: call_i32_nullary:
18; CHECK-NEXT: .result i32{{$}}
19; CHECK-NEXT: {{^}} i32.call $push[[NUM:[0-9]+]]=, i32_nullary@FUNCTION{{$}}
20; CHECK-NEXT: return $pop[[NUM]]{{$}}
21define i32 @call_i32_nullary() {
22  %r = call i32 @i32_nullary()
23  ret i32 %r
24}
25
26; CHECK-LABEL: call_i64_nullary:
27; CHECK-NEXT: .result i64{{$}}
28; CHECK-NEXT: {{^}} i64.call $push[[NUM:[0-9]+]]=, i64_nullary@FUNCTION{{$}}
29; CHECK-NEXT: return $pop[[NUM]]{{$}}
30define i64 @call_i64_nullary() {
31  %r = call i64 @i64_nullary()
32  ret i64 %r
33}
34
35; CHECK-LABEL: call_float_nullary:
36; CHECK-NEXT: .result f32{{$}}
37; CHECK-NEXT: {{^}} f32.call $push[[NUM:[0-9]+]]=, float_nullary@FUNCTION{{$}}
38; CHECK-NEXT: return $pop[[NUM]]{{$}}
39define float @call_float_nullary() {
40  %r = call float @float_nullary()
41  ret float %r
42}
43
44; CHECK-LABEL: call_double_nullary:
45; CHECK-NEXT: .result f64{{$}}
46; CHECK-NEXT: {{^}} f64.call $push[[NUM:[0-9]+]]=, double_nullary@FUNCTION{{$}}
47; CHECK-NEXT: return $pop[[NUM]]{{$}}
48define double @call_double_nullary() {
49  %r = call double @double_nullary()
50  ret double %r
51}
52
53; CHECK-LABEL: call_void_nullary:
54; CHECK-NEXT: {{^}} call void_nullary@FUNCTION{{$}}
55; CHECK-NEXT: return{{$}}
56define void @call_void_nullary() {
57  call void @void_nullary()
58  ret void
59}
60
61; CHECK-LABEL: call_i32_unary:
62; CHECK-NEXT: .param i32{{$}}
63; CHECK-NEXT: .result i32{{$}}
64; CHECK-NEXT: {{^}} i32.call $push[[NUM:[0-9]+]]=, i32_unary@FUNCTION, $0{{$}}
65; CHECK-NEXT: return $pop[[NUM]]{{$}}
66define i32 @call_i32_unary(i32 %a) {
67  %r = call i32 @i32_unary(i32 %a)
68  ret i32 %r
69}
70
71; CHECK-LABEL: call_i32_binary:
72; CHECK-NEXT: .param i32, i32{{$}}
73; CHECK-NEXT: .result i32{{$}}
74; CHECK-NEXT: {{^}} i32.call $push[[NUM:[0-9]+]]=, i32_binary@FUNCTION, $0, $1{{$}}
75; CHECK-NEXT: return $pop[[NUM]]{{$}}
76define i32 @call_i32_binary(i32 %a, i32 %b) {
77  %r = call i32 @i32_binary(i32 %a, i32 %b)
78  ret i32 %r
79}
80
81; CHECK-LABEL: call_indirect_void:
82; CHECK-NEXT: .param i32{{$}}
83; CHECK-NEXT: {{^}} call_indirect $0{{$}}
84; CHECK-NEXT: return{{$}}
85define void @call_indirect_void(void ()* %callee) {
86  call void %callee()
87  ret void
88}
89
90; CHECK-LABEL: call_indirect_i32:
91; CHECK-NEXT: .param i32{{$}}
92; CHECK-NEXT: .result i32{{$}}
93; CHECK-NEXT: {{^}} i32.call_indirect $push[[NUM:[0-9]+]]=, $0{{$}}
94; CHECK-NEXT: return $pop[[NUM]]{{$}}
95define i32 @call_indirect_i32(i32 ()* %callee) {
96  %t = call i32 %callee()
97  ret i32 %t
98}
99
100; CHECK-LABEL: call_indirect_arg:
101; CHECK-NEXT: .param i32, i32{{$}}
102; CHECK-NEXT: {{^}} call_indirect $1, $0{{$}}
103; CHECK-NEXT: return{{$}}
104define void @call_indirect_arg(void (i32)* %callee, i32 %arg) {
105  call void %callee(i32 %arg)
106  ret void
107}
108
109; CHECK-LABEL: call_indirect_arg_2:
110; CHECK-NEXT: .param i32, i32, i32{{$}}
111; CHECK-NEXT: {{^}} i32.call_indirect $drop=, $1, $2, $0{{$}}
112; CHECK-NEXT: return{{$}}
113define void @call_indirect_arg_2(i32 (i32, i32)* %callee, i32 %arg, i32 %arg2) {
114  call i32 %callee(i32 %arg, i32 %arg2)
115  ret void
116}
117
118; CHECK-LABEL: tail_call_void_nullary:
119; CHECK-NEXT: {{^}} call void_nullary@FUNCTION{{$}}
120; CHECK-NEXT: return{{$}}
121define void @tail_call_void_nullary() {
122  tail call void @void_nullary()
123  ret void
124}
125
126; CHECK-LABEL: fastcc_tail_call_void_nullary:
127; CHECK-NEXT: {{^}} call void_nullary@FUNCTION{{$}}
128; CHECK-NEXT: return{{$}}
129define void @fastcc_tail_call_void_nullary() {
130  tail call fastcc void @void_nullary()
131  ret void
132}
133
134; CHECK-LABEL: coldcc_tail_call_void_nullary:
135; CHECK-NEXT: {{^}} call void_nullary@FUNCTION{{$}}
136; CHECK-NEXT: return{{$}}
137define void @coldcc_tail_call_void_nullary() {
138  tail call coldcc void @void_nullary()
139  ret void
140}
141
142; TODO: test the following:
143;  - More argument combinations.
144;  - Tail call.
145;  - Interesting returns (struct, multiple).
146;  - Vararg.
147