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 implementation ; Functions:
9 declare void %llvm.va_start(i8**)
10 declare void %llvm.va_copy(i8**, i8*)
11 declare void %llvm.va_end(i8**)
13 define i31 %test(i31 %X, ...) {
14 ; Allocate two va_list items. On this target, va_list is of type i8*
15 %ap = alloca i8* ; <i8**> [#uses=4]
16 %aq = alloca i8* ; <i8**> [#uses=2]
18 ; Initialize variable argument processing
19 call void %llvm.va_start(i8** %ap)
21 ; Read a single integer argument
22 %tmp = va_arg i8** %ap, i31 ; <i31> [#uses=1]
24 ; Demonstrate usage of llvm.va_copy and llvm_va_end
25 %apv = load i8** %ap ; <i8*> [#uses=1]
26 call void %llvm.va_copy(i8** %aq, i8* %apv)
27 call void %llvm.va_end(i8** %aq)
29 ; Stop processing of arguments.
30 call void %llvm.va_end(i8** %ap)