mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 19:52:54 +01:00
34 lines
1.1 KiB
LLVM
34 lines
1.1 KiB
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 ; Functions:
|
|
declare void %llvm.va_start(i8**)
|
|
declare void %llvm.va_copy(i8**, i8*)
|
|
declare void %llvm.va_end(i8**)
|
|
|
|
define i31 %test(i31 %X, ...) {
|
|
; Allocate two va_list items. On this target, va_list is of type i8*
|
|
%ap = alloca i8* ; <i8**> [#uses=4]
|
|
%aq = alloca i8* ; <i8**> [#uses=2]
|
|
|
|
; Initialize variable argument processing
|
|
call void %llvm.va_start(i8** %ap)
|
|
|
|
; Read a single integer argument
|
|
%tmp = va_arg i8** %ap, i31 ; <i31> [#uses=1]
|
|
|
|
; Demonstrate usage of llvm.va_copy and llvm_va_end
|
|
%apv = load i8** %ap ; <i8*> [#uses=1]
|
|
call void %llvm.va_copy(i8** %aq, i8* %apv)
|
|
call void %llvm.va_end(i8** %aq)
|
|
|
|
; Stop processing of arguments.
|
|
call void %llvm.va_end(i8** %ap)
|
|
ret i31 %tmp
|
|
|
|
}
|