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33 lines
1.0 KiB
LLVM
33 lines
1.0 KiB
LLVM
; RUN: llvm-as %s -o - | llvm-dis > %t1.ll
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; RUN: llvm-as %t1.ll -o - | llvm-dis > %t2.ll
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; RUN: diff %t1.ll %t2.ll
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; Demonstrate all of the variable argument handling intrinsic functions plus
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; the va_arg instruction.
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declare void @llvm.va_start(i8**)
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declare void @llvm.va_copy(i8**, i8*)
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declare void @llvm.va_end(i8**)
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define i31 @test(i31 %X, ...) {
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; Allocate two va_list items. On this target, va_list is of type i8*
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%ap = alloca i8* ; <i8**> [#uses=4]
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%aq = alloca i8* ; <i8**> [#uses=2]
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; Initialize variable argument processing
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call void @llvm.va_start(i8** %ap)
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; Read a single integer argument
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%tmp = va_arg i8** %ap, i31 ; <i31> [#uses=1]
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; Demonstrate usage of llvm.va_copy and llvm_va_end
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%apv = load i8** %ap ; <i8*> [#uses=1]
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call void @llvm.va_copy(i8** %aq, i8* %apv)
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call void @llvm.va_end(i8** %aq)
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; Stop processing of arguments.
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call void @llvm.va_end(i8** %ap)
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ret i31 %tmp
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}
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