1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
; 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
}
|
