1 ; RUN: llc < %s -asm-verbose=false -verify-machineinstrs | FileCheck %s
3 ; Test varargs constructs.
5 target datalayout = "e-p:32:32-i64:64-n32:64-S128"
6 target triple = "wasm32-unknown-unknown"
10 ; TODO: Test va_start.
12 ;define void @start(i8** %ap, ...) {
14 ; %0 = bitcast i8** %ap to i8*
15 ; call void @llvm.va_start(i8* %0)
22 ; CHECK-NEXT: .param i32{{$}}
23 ; CHECK-NEXT: return{{$}}
24 define void @end(i8** %ap) {
26 %0 = bitcast i8** %ap to i8*
27 call void @llvm.va_end(i8* %0)
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{{$}}
38 define void @copy(i8** %ap, i8** %bp) {
40 %0 = bitcast i8** %ap to i8*
41 %1 = bitcast i8** %bp to i8*
42 call void @llvm.va_copy(i8* %0, i8* %1)
46 ; Test va_arg with an i8 argument.
48 ; CHECK-LABEL: arg_i8:
49 ; CHECK-NEXT: .param i32{{$}}
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 $pop2{{$}}
58 define i8 @arg_i8(i8** %ap) {
60 %t = va_arg i8** %ap, i8
64 ; Test va_arg with an i32 argument.
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 $pop6{{$}}
80 define i32 @arg_i32(i8** %ap) {
82 %t = va_arg i8** %ap, i32
86 ; Test va_arg with an i128 argument.
88 ; CHECK-LABEL: arg_i128:
89 ; CHECK-NEXT: .param i32, i32{{$}}
95 define i128 @arg_i128(i8** %ap) {
97 %t = va_arg i8** %ap, i128
101 ; Test a varargs call with no actual arguments.
103 declare void @callee(...)
105 ; CHECK-LABEL: caller_none:
106 ; CHECK-NEXT: call callee{{$}}
107 ; CHECK-NEXT: return{{$}}
108 define void @caller_none() {
109 call void (...) @callee()
113 ; CHECK-LABEL: caller_some
114 define 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)
121 declare void @llvm.va_start(i8*)
122 declare void @llvm.va_end(i8*)
123 declare void @llvm.va_copy(i8*, i8*)