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34 lines
1.1 KiB
LLVM
34 lines
1.1 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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implementation ; Functions:
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declare void %llvm.va_start(sbyte**)
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declare void %llvm.va_copy(sbyte**, sbyte*)
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declare void %llvm.va_end(sbyte**)
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int %test(int %X, ...) {
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; Allocate two va_list items. On this target, va_list is of type sbyte*
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%ap = alloca sbyte* ; <sbyte**> [#uses=4]
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%aq = alloca sbyte* ; <sbyte**> [#uses=2]
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; Initialize variable argument processing
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call void %llvm.va_start(sbyte** %ap)
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; Read a single integer argument
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%tmp = va_arg sbyte** %ap, int ; <int> [#uses=1]
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; Demonstrate usage of llvm.va_copy and llvm_va_end
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%apv = load sbyte** %ap ; <sbyte*> [#uses=1]
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call void %llvm.va_copy(sbyte** %aq, sbyte* %apv)
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call void %llvm.va_end(sbyte** %aq)
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; Stop processing of arguments.
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call void %llvm.va_end(sbyte** %ap)
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ret int %tmp
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}
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