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; RUN: opt < %s -aa-pipeline=basic-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
target datalayout = "p:64:64"
declare void @escape(i8* %ptr)
; Verify that unescaped noalias parameter does not alias inttoptr
define void @test1(i8* noalias %P, i64 %Q_as_int) {
; CHECK-LABEL: Function: test1:
; CHECK: NoAlias: i8* %P, i8* %Q
%Q = inttoptr i64 %Q_as_int to i8*
store i8 0, i8* %P
store i8 1, i8* %Q
ret void
}
; Verify that unescaped alloca does not alias inttoptr
define void @test2(i64 %Q_as_int) {
; CHECK-LABEL: Function: test2:
; CHECK: NoAlias: i8* %P, i8* %Q
%P = alloca i8
%Q = inttoptr i64 %Q_as_int to i8*
store i8 0, i8* %P
store i8 1, i8* %Q
ret void
}
; Verify that escaped noalias parameter may alias inttoptr
define void @test3(i8* noalias %P, i64 %Q_as_int) {
; CHECK-LABEL: Function: test3:
; CHECK: MayAlias: i8* %P, i8* %Q
call void @escape(i8* %P)
%Q = inttoptr i64 %Q_as_int to i8*
store i8 0, i8* %P
store i8 1, i8* %Q
ret void
}
; Verify that escaped alloca may alias inttoptr
define void @test4(i64 %Q_as_int) {
; CHECK-LABEL: Function: test4:
; CHECK: MayAlias: i8* %P, i8* %Q
%P = alloca i8
call void @escape(i8* %P)
%Q = inttoptr i64 %Q_as_int to i8*
store i8 0, i8* %P
store i8 1, i8* %Q
ret void
}
; Verify that global may alias inttoptr
@G = external global i8
define void @test5(i64 %Q_as_int) {
; CHECK-LABEL: Function: test5:
; CHECK: MayAlias: i8* %Q, i8* @G
%Q = inttoptr i64 %Q_as_int to i8*
store i8 0, i8* @G
store i8 1, i8* %Q
ret void
}
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