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Imported Upstream version 5.18.0.179

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Former-commit-id: 67aa10e65b237e1c4537630979ee99ebe1374215
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Xamarin Public Jenkins (auto-signing)
2018-10-25 08:34:57 +00:00
parent d6bde52373
commit 8625704ad8
28485 changed files with 3866843 additions and 50 deletions
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33
external/llvm/test/Analysis/CFLAliasAnalysis/Steensgaard/interproc-arg-deref-escape.ll vendored Normal file
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; This testcase ensures that CFL AA answers queries soundly when callee tries
; to escape the memory pointed to by its parameters
; RUN: opt < %s -disable-basicaa -cfl-steens-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
; RUN: opt < %s -aa-pipeline=cfl-steens-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
declare void @opaque(i32*)
define void @escape_arg_deref(i32** %arg) {
%arg_deref = load i32*, i32** %arg
call void @opaque(i32* %arg_deref)
ret void
}
; CHECK-LABEL: Function: test_arg_deref_escape
; CHECK: NoAlias: i32* %a, i32** %x
; CHECK: NoAlias: i32* %b, i32** %x
; CHECK: NoAlias: i32* %a, i32* %b
; CHECK: NoAlias: i32** %p, i32** %x
; CHECK: NoAlias: i32* %a, i32** %p
; CHECK: NoAlias: i32* %b, i32** %p
; CHECK: MayAlias: i32* %a, i32* %c
; CHECK: NoAlias: i32* %b, i32* %c
; CHECK: NoAlias: i32* %c, i32** %p
define void @test_arg_deref_escape(i32** %x) {
%a = alloca i32, align 4
%b = alloca i32, align 4
%p = alloca i32*, align 4
store i32* %a, i32** %p
call void @escape_arg_deref(i32** %p)
%c = load i32*, i32** %x
ret void
}