1 ; RUN: llvm-as %s -o - | llvm-dis > %t1.ll
2 ; RUN: llvm-as %t1.ll -o - | llvm-dis > %t2.ll
3 ; RUN: diff %t1.ll %t2.ll
5 ; Demonstrate all of the variable argument handling intrinsic functions plus
6 ; the va_arg instruction.
8 declare void @llvm.va_start(i8**)
9 declare void @llvm.va_copy(i8**, i8*)
10 declare void @llvm.va_end(i8**)
12 define i31 @test(i31 %X, ...) {
13 ; Allocate two va_list items. On this target, va_list is of type i8*
14 %ap = alloca i8* ; <i8**> [#uses=4]
15 %aq = alloca i8* ; <i8**> [#uses=2]
17 ; Initialize variable argument processing
18 call void @llvm.va_start(i8** %ap)
20 ; Read a single integer argument
21 %tmp = va_arg i8** %ap, i31 ; <i31> [#uses=1]
23 ; Demonstrate usage of llvm.va_copy and llvm_va_end
24 %apv = load i8** %ap ; <i8*> [#uses=1]
25 call void @llvm.va_copy(i8** %aq, i8* %apv)
26 call void @llvm.va_end(i8** %aq)
28 ; Stop processing of arguments.
29 call void @llvm.va_end(i8** %ap)