mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 04:02:41 +01:00
39 lines
1.5 KiB
LLVM
39 lines
1.5 KiB
LLVM
; RUN: llvm-as < %s | 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.
|
|
|
|
declare void @llvm.va_start(i8*)
|
|
|
|
declare void @llvm.va_copy(i8*, i8*)
|
|
|
|
declare void @llvm.va_end(i8*)
|
|
|
|
define i32 @test(i32 %X, ...) {
|
|
; Allocate two va_list items. On this target, va_list is of type sbyte*
|
|
%ap = alloca i8* ; <i8**> [#uses=4]
|
|
%aq = alloca i8* ; <i8**> [#uses=2]
|
|
|
|
; Initialize variable argument processing
|
|
%va.upgrd.1 = bitcast i8** %ap to i8* ; <i8*> [#uses=1]
|
|
call void @llvm.va_start( i8* %va.upgrd.1 )
|
|
|
|
; Read a single integer argument
|
|
%tmp = va_arg i8** %ap, i32 ; <i32> [#uses=1]
|
|
|
|
; Demonstrate usage of llvm.va_copy and llvm_va_end
|
|
%apv = load i8** %ap ; <i8*> [#uses=1]
|
|
%va0.upgrd.2 = bitcast i8** %aq to i8* ; <i8*> [#uses=1]
|
|
%va1.upgrd.3 = bitcast i8* %apv to i8* ; <i8*> [#uses=1]
|
|
call void @llvm.va_copy( i8* %va0.upgrd.2, i8* %va1.upgrd.3 )
|
|
%va.upgrd.4 = bitcast i8** %aq to i8* ; <i8*> [#uses=1]
|
|
call void @llvm.va_end( i8* %va.upgrd.4 )
|
|
|
|
; Stop processing of arguments.
|
|
%va.upgrd.5 = bitcast i8** %ap to i8* ; <i8*> [#uses=1]
|
|
call void @llvm.va_end( i8* %va.upgrd.5 )
|
|
ret i32 %tmp
|
|
}
|