57d57b1afd
With opaque pointers, we cannot use the pointer element type to determine the LocationSize for the AA query. Instead, -aa-eval tests are now required to have an explicit load or store for any pointer they want to compute alias results for, and the load/store types are used to determine the location size. This may affect ordering of results, and sorting within one result, as the type is not considered part of the sorted string anymore. To somewhat minimize the churn, printing still uses faux typed pointer notation.
38 lines
1.0 KiB
LLVM
38 lines
1.0 KiB
LLVM
; RUN: opt < %s -aa-pipeline=cfl-steens-aa -passes=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-DAG: MayAlias: i32* %X, i32* %tmp
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; CHECK-DAG: MayAlias: i8** %ap, i32* %tmp
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; CHECK-DAG: NoAlias: i8** %ap, i8** %aq
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; CHECK-DAG: MayAlias: i8** %aq, i32* %tmp
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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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load i32, i32* %X
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load i8*, i8** %ap
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load i8*, i8** %aq
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load i32, i32* %tmp
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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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