1; RUN: llc < %s -asm-verbose=false -verify-machineinstrs | FileCheck %s
2
3; Test varargs constructs.
4
5target datalayout = "e-p:32:32-i64:64-n32:64-S128"
6target triple = "wasm32-unknown-unknown"
7
8; Test va_start.
9
10; TODO: Test va_start.
11
12;define void @start(i8** %ap, ...) {
13;entry:
14;  %0 = bitcast i8** %ap to i8*
15;  call void @llvm.va_start(i8* %0)
16;  ret void
17;}
18
19; Test va_end.
20
21; CHECK-LABEL: end:
22; CHECK-NEXT: .param i32{{$}}
23; CHECK-NEXT: return{{$}}
24define void @end(i8** %ap) {
25entry:
26  %0 = bitcast i8** %ap to i8*
27  call void @llvm.va_end(i8* %0)
28  ret void
29}
30
31; Test va_copy.
32
33; CHECK-LABEL: copy:
34; CHECK-NEXT: .param i32, i32{{$}}
35; CHECK-NEXT: i32.load  $push0=, 0($1){{$}}
36; CHECK-NEXT: i32.store $discard=, 0($0), $pop0{{$}}
37; CHECK-NEXT: return{{$}}
38define void @copy(i8** %ap, i8** %bp) {
39entry:
40  %0 = bitcast i8** %ap to i8*
41  %1 = bitcast i8** %bp to i8*
42  call void @llvm.va_copy(i8* %0, i8* %1)
43  ret void
44}
45
46; Test va_arg with an i8 argument.
47
48; CHECK-LABEL: arg_i8:
49; CHECK-NEXT: .param     i32{{$}}
50; CHECK-NEXT: .result    i32{{$}}
51; CHECK-NEXT: .local     i32{{$}}
52; CHECK-NEXT: i32.load   $1=, 0($0){{$}}
53; CHECK-NEXT: i32.const  $push0=, 4{{$}}
54; CHECK-NEXT: i32.add    $push1=, $1, $pop0{{$}}
55; CHECK-NEXT: i32.store  $discard=, 0($0), $pop1{{$}}
56; CHECK-NEXT: i32.load   $push2=, 0($1){{$}}
57; CHECK-NEXT: return     $pop2{{$}}
58define i8 @arg_i8(i8** %ap) {
59entry:
60  %t = va_arg i8** %ap, i8
61  ret i8 %t
62}
63
64; Test va_arg with an i32 argument.
65
66; CHECK-LABEL: arg_i32:
67; CHECK-NEXT: .param     i32{{$}}
68; CHECK-NEXT: .result    i32{{$}}
69; CHECK-NEXT: .local     i32{{$}}
70; CHECK-NEXT: i32.load   $push0=, 0($0){{$}}
71; CHECK-NEXT: i32.const  $push1=, 3{{$}}
72; CHECK-NEXT: i32.add    $push2=, $pop0, $pop1{{$}}
73; CHECK-NEXT: i32.const  $push3=, -4{{$}}
74; CHECK-NEXT: i32.and    $1=, $pop2, $pop3{{$}}
75; CHECK-NEXT: i32.const  $push4=, 4{{$}}
76; CHECK-NEXT: i32.add    $push5=, $1, $pop4{{$}}
77; CHECK-NEXT: i32.store  $discard=, 0($0), $pop5{{$}}
78; CHECK-NEXT: i32.load   $push6=, 0($1){{$}}
79; CHECK-NEXT: return     $pop6{{$}}
80define i32 @arg_i32(i8** %ap) {
81entry:
82  %t = va_arg i8** %ap, i32
83  ret i32 %t
84}
85
86; Test va_arg with an i128 argument.
87
88; CHECK-LABEL: arg_i128:
89; CHECK-NEXT: .param i32, i32{{$}}
90; CHECK-NEXT: .local
91; CHECK: i32.and
92; CHECK: i64.load
93; CHECK: i64.load
94; CHECK: return{{$}}
95define i128 @arg_i128(i8** %ap) {
96entry:
97  %t = va_arg i8** %ap, i128
98  ret i128 %t
99}
100
101; Test a varargs call with no actual arguments.
102
103declare void @callee(...)
104
105; CHECK-LABEL: caller_none:
106; CHECK-NEXT: call callee{{$}}
107; CHECK-NEXT: return{{$}}
108define void @caller_none() {
109  call void (...) @callee()
110  ret void
111}
112
113; CHECK-LABEL: caller_some
114define void @caller_some() {
115  ; TODO: Fix interaction between register coalescer and reg stackifier,
116  ; or disable coalescer.
117  ;call void (...) @callee(i32 0, double 2.0)
118  ret void
119}
120
121declare void @llvm.va_start(i8*)
122declare void @llvm.va_end(i8*)
123declare void @llvm.va_copy(i8*, i8*)
124