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- ; 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*, 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
- }
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