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