llvm-mirror/test/Feature/varargs.ll
2004-11-07 06:08:43 +00:00

24 lines
601 B
LLVM

; RUN: llvm-as %s -o - | llvm-dis > %t1.ll
; RUN: llvm-as %t1.ll -o - | llvm-dis > %t2.ll
; RUN: diff %t1.ll %t2.ll
; Demonstrate all of the variable argument handling intrinsic functions plus
; the va_arg instruction.
implementation
declare sbyte* %llvm.va_start()
declare sbyte* %llvm.va_copy(sbyte*)
declare void %llvm.va_end(sbyte*)
int %test(int %X, ...) {
%ap = call sbyte* %llvm.va_start()
%aq = call sbyte* %llvm.va_copy(sbyte* %ap)
call void %llvm.va_end(sbyte* %aq)
%tmp = vaarg sbyte* %ap, int
%ap2 = vanext sbyte* %ap, int
call void %llvm.va_end(sbyte* %ap2)
ret int %tmp
}