33 lines
922 B
LLVM
33 lines
922 B
LLVM
; RUN: opt < %s -disable-basicaa -cfl-steens-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
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; CHECK-LABEL: Function: test1
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; CHECK: MayAlias: i32* %X, i32* %tmp
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; CHECK: MayAlias: i32* %tmp, i8** %ap
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; CHECK: NoAlias: i8** %ap, i8** %aq
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; CHECK: MayAlias: i32* %tmp, i8** %aq
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define i32* @test1(i32* %X, ...) {
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; Initialize variable argument processing
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%ap = alloca i8*
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%ap2 = bitcast i8** %ap to i8*
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call void @llvm.va_start(i8* %ap2)
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; Read a single pointer argument
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%tmp = va_arg i8** %ap, i32*
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; Demonstrate usage of llvm.va_copy and llvm.va_end
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%aq = alloca i8*
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%aq2 = bitcast i8** %aq to i8*
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call void @llvm.va_copy(i8* %aq2, i8* %ap2)
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call void @llvm.va_end(i8* %aq2)
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; Stop processing of arguments.
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call void @llvm.va_end(i8* %ap2)
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ret i32* %tmp
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}
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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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