Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/assign.ll

@@ -0,0 +1,24 @@
+; This testcase ensures that CFL AA handles assignment in an inclusion-based 
+; manner
+
+; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+; CHECK-LABEL: Function: test_assign
+; CHECK: NoAlias: i64* %a, i64* %b
+; CHECK: NoAlias: i32* %c, i64* %b
+; CHECK: NoAlias: i32* %d, i64* %a
+; CHECK: NoAlias: i32* %c, i32* %d
+; CHECK: MayAlias: i32* %e, i64* %a
+; CHECK: MayAlias: i32* %e, i64* %b
+; CHECK: MayAlias: i32* %c, i32* %e
+; CHECK: MayAlias: i32* %d, i32* %e
+define void @test_assign(i1 %cond) {
+  %a = alloca i64, align 8
+  %b = alloca i64, align 8
+
+  %c = bitcast i64* %a to i32*
+  %d = bitcast i64* %b to i32*
+  %e = select i1 %cond, i32* %c, i32* %d
+  ret void
+}

external/llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/assign2.ll

@@ -0,0 +1,23 @@
+; This testcase ensures that CFL AA handles assignment in an inclusion-based 
+; manner
+
+; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+; CHECK-LABEL: Function: test_assign2
+; CHECK: NoAlias: i32* %b, i64* %a
+; CHECK: NoAlias: i32* %b, i32* %c
+; CHECK: NoAlias: i32* %b, i32* %d
+; CHECK: MayAlias: i32* %e, i64* %a
+; CHECK: MayAlias: i32* %b, i32* %e
+; CHECK: MayAlias: i32* %c, i32* %e
+; CHECK: MayAlias: i32* %d, i32* %e
+define void @test_assign2(i1 %cond) {
+	%a = alloca i64, align 8
+	%b = alloca i32, align 4
+
+	%c = bitcast i64* %a to i32*
+	%d = bitcast i64* %a to i32*
+	%e = select i1 %cond, i32* %c, i32* %b
+	ret void
+}

external/llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/attrs-below.ll

@@ -0,0 +1,61 @@
+; This testcase ensures that AliasAttrs are propagated not only on the same 
+; level but also downward.
+
+; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+; CHECK-LABEL: Function: test_attr_below
+; CHECK: MayAlias: i64* %q, i64*** %p
+; CHECK: NoAlias: i64* %esc, i64*** %p
+; CHECK: NoAlias: i64* %esc, i64* %q
+
+; CHECK: MayAlias: i64* %unknown, i64*** %p
+; CHECK: MayAlias: i64* %q, i64* %unknown
+; CHECK: MayAlias: i64* %esc, i64* %unknown
+; CHECK: MayAlias: i64* %q, i64** %pdrf
+; CHECK: MayAlias: i64* %esc, i64** %pdrf
+; CHECK: MayAlias: i64* %unknown, i64** %pdrf
+; CHECK: MayAlias: i64* %pdrf2, i64* %q
+; CHECK: MayAlias: i64* %esc, i64* %pdrf2
+; CHECK: MayAlias: i64* %pdrf2, i64* %unknown
+define void @test_attr_below(i64*** %p, i64* %q) {
+  %esc = alloca i64, align 8
+  %escint = ptrtoint i64* %esc to i64
+  %unknown = inttoptr i64 %escint to i64*
+
+  %pdrf = load i64**, i64*** %p
+  %pdrf2 = load i64*, i64** %pdrf
+
+  ret void
+}
+
+; CHECK-LABEL: Function: test_attr_assign_below
+; CHECK: MayAlias: i64** %sel, i64*** %p
+; CHECK: MayAlias: i64* %q, i64** %sel
+; CHECK: MayAlias: i64** %a, i64** %sel
+; CHECK: MayAlias: i64** %pdrf, i64** %sel
+
+; CHECK: MayAlias: i64** %c, i64*** %p
+; CHECK: MayAlias: i64* %q, i64** %c
+; CHECK: MayAlias: i64** %a, i64** %c
+; CHECK: MayAlias: i64** %c, i64** %pdrf
+; CHECK: MayAlias: i64** %c, i64** %sel
+
+; CHECK: MayAlias: i64* %d, i64*** %p
+; CHECK: MayAlias: i64* %d, i64* %q
+; CHECK: MayAlias: i64* %d, i64** %pdrf
+; CHECK: MayAlias: i64* %d, i64** %sel
+define void @test_attr_assign_below(i64*** %p, i64* %q, i1 %cond) {
+  %a = alloca i64*, align 8
+  %pdrf = load i64**, i64*** %p
+  %sel = select i1 %cond, i64** %a, i64** %pdrf
+
+  %b = alloca i64**, align 8
+  store i64** %sel, i64*** %b
+
+  %c = load i64**, i64*** %b
+  %d = load i64*, i64** %c
+
+  ret void
+}
+

external/llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/attrs.ll

@@ -0,0 +1,94 @@
+; This testcase ensures that CFL AA handles escaped values no more conservative than it should
+
+; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+; CHECK-LABEL: Function: test_local
+; CHECK: NoAlias: i32* %a, i32* %b
+; CHECK: MayAlias: i32* %a, i32* %aAlias
+; CHECK: NoAlias: i32* %aAlias, i32* %b
+define void @test_local() {
+	%a = alloca i32, align 4
+	%b = alloca i32, align 4
+	%aint = ptrtoint i32* %a to i64
+	%aAlias = inttoptr i64 %aint to i32*
+	ret void
+}
+
+; CHECK-LABEL: Function: test_global_param
+; CHECK: NoAlias: i32* %a, i32** %x
+; CHECK: MayAlias: i32* %a, i32* %xload
+; CHECK: MayAlias: i32* %a, i32* %gload
+; CHECK: MayAlias: i32* %gload, i32* %xload
+; CHECK: MayAlias: i32** %x, i32** @ext_global
+; CHECK: NoAlias: i32* %a, i32** @ext_global
+@ext_global = external global i32*
+define void @test_global_param(i32** %x) {
+	%a = alloca i32, align 4
+	%aint = ptrtoint i32* %a to i64
+	%xload = load i32*, i32** %x
+	%gload = load i32*, i32** @ext_global
+	ret void
+}
+
+declare void @external_func(i32**)
+; CHECK-LABEL: Function: test_external_call
+; CHECK: NoAlias: i32* %b, i32* %x
+; CHECK: NoAlias: i32* %b, i32** %a
+; CHECK: MayAlias: i32* %c, i32* %x
+; CHECK: MayAlias: i32* %c, i32** %a
+; CHECK: NoAlias: i32* %b, i32* %c
+define void @test_external_call(i32* %x) {
+	%a = alloca i32*, align 8
+	%b = alloca i32, align 4
+	call void @external_func(i32** %a)
+	%c = load i32*, i32** %a
+	ret void
+}
+
+declare void @external_func_readonly(i32**) readonly
+; CHECK-LABEL: Function: test_external_call_func_readonly
+; CHECK: MayAlias: i32* %c, i32* %x
+; CHECK: NoAlias: i32* %c, i32** %a
+define void @test_external_call_func_readonly(i32* %x) {
+	%a = alloca i32*, align 8
+	%b = alloca i32, align 4
+	store i32* %x, i32** %a, align 4
+	call void @external_func_readonly(i32** %a)
+	%c = load i32*, i32** %a
+	ret void
+}
+
+; CHECK-LABEL: Function: test_external_call_callsite_readonly
+; CHECK: MayAlias: i32* %c, i32* %x
+; CHECK: NoAlias: i32* %c, i32** %a
+define void @test_external_call_callsite_readonly(i32* %x) {
+	%a = alloca i32*, align 8
+	%b = alloca i32, align 4
+	store i32* %x, i32** %a, align 4
+	call void @external_func(i32** %a) readonly
+	%c = load i32*, i32** %a
+	ret void
+}
+
+declare i32* @external_func_normal_return(i32*)
+; CHECK-LABEL: Function: test_external_call_normal_return
+; CHECK: MayAlias: i32* %c, i32* %x
+; CHECK: MayAlias: i32* %a, i32* %c
+define void @test_external_call_normal_return(i32* %x) {
+	%a = alloca i32, align 8
+	%b = alloca i32, align 4
+	%c = call i32* @external_func_normal_return(i32* %a)
+	ret void
+}
+
+declare noalias i32* @external_func_noalias_return(i32*)
+; CHECK-LABEL: Function: test_external_call_noalias_return
+; CHECK: NoAlias: i32* %c, i32* %x
+; CHECK: NoAlias: i32* %a, i32* %c
+define void @test_external_call_noalias_return(i32* %x) {
+	%a = alloca i32, align 8
+	%b = alloca i32, align 4
+	%c = call i32* @external_func_noalias_return(i32* %a)
+	ret void
+}

external/llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/basic-interproc.ll

@@ -0,0 +1,22 @@
+; This testcase ensures that CFL AA won't be too conservative when trying to do
+; interprocedural analysis on simple callee
+
+; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+; CHECK-LABEL: Function: noop_callee
+; CHECK: MayAlias: i32* %arg1, i32* %arg2
+define void @noop_callee(i32* %arg1, i32* %arg2) {
+  store i32 0, i32* %arg1
+  store i32 0, i32* %arg2
+  ret void
+}
+; CHECK-LABEL: Function: test_noop
+; CHECK: NoAlias: i32* %a, i32* %b
+define void @test_noop() {
+  %a = alloca i32, align 4
+  %b = alloca i32, align 4
+  call void @noop_callee(i32* %a, i32* %b)
+
+  ret void
+}

external/llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/cycle.ll

@@ -0,0 +1,34 @@
+; This testcase ensures that CFL AA handles assignment cycles correctly
+
+; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+; CHECK-LABEL: Function: test_cycle
+; CHECK: NoAlias: i64* %a, i64** %b
+; CHECK: NoAlias: i64* %a, i64*** %c
+; CHECK: NoAlias: i64** %b, i64*** %c
+; CHECK: NoAlias: i64* %a, i64**** %d
+; CHECK: NoAlias: i64** %b, i64**** %d
+; CHECK: NoAlias: i64*** %c, i64**** %d
+; CHECK: NoAlias: i64* %a, i64* %e
+; CHECK: NoAlias: i64* %e, i64** %b
+; CHECK: NoAlias: i64* %e, i64*** %c
+; CHECK: MayAlias: i64* %a, i64* %f
+; CHECK: NoAlias: i64* %f, i64** %b
+; CHECK: NoAlias: i64* %f, i64*** %c
+; CHECK: MayAlias: i64* %f, i64**** %d
+; CHECK: MayAlias: i64* %e, i64* %f
+define void @test_cycle() {
+  %a = alloca i64, align 8
+  %b = alloca i64*, align 8
+  %c = alloca i64**, align 8
+  %d = alloca i64***, align 8
+  store i64* %a, i64** %b
+  store i64** %b, i64*** %c
+  store i64*** %c, i64**** %d
+
+  %e = bitcast i64**** %d to i64*
+  store i64* %e, i64** %b
+  %f = load i64*, i64** %b
+  ret void
+}

external/llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/interproc-arg-deref-escape.ll

@@ -0,0 +1,33 @@
+; 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-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -aa-pipeline=cfl-anders-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
+}

external/llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/interproc-arg-escape.ll

@@ -0,0 +1,31 @@
+; This testcase ensures that CFL AA answers queries soundly when callee tries 
+; to escape its parameters
+
+; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+declare void @opaque(i32*)
+define void @escape_arg(i32* %arg) {
+	call void @opaque(i32* %arg)
+	ret void
+}
+; CHECK-LABEL: Function: test_arg_escape
+; CHECK: NoAlias: i32* %a, i32** %x
+; CHECK: NoAlias: i32* %b, i32** %x
+; CHECK: NoAlias: i32* %a, i32* %b
+; CHECK: NoAlias: i32* %c, i32** %x
+; CHECK: NoAlias: i32* %a, i32* %c
+; CHECK: NoAlias: i32* %b, i32* %c
+; CHECK: MayAlias: i32* %a, i32* %d
+; CHECK: MayAlias: i32* %b, i32* %d
+; CHECK: NoAlias: i32* %c, i32* %d
+define void @test_arg_escape(i32** %x) {
+  %a = alloca i32, align 4
+  %b = alloca i32, align 4
+  %c = alloca i32, align 4
+  call void @escape_arg(i32* %a)
+  call void @escape_arg(i32* %b)
+  %d = load i32*, i32** %x
+
+  ret void
+}

external/llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/interproc-ret-arg.ll

@@ -0,0 +1,26 @@
+; This testcase ensures that CFL AA answers queries soundly when callee tries 
+; to return one of its parameters
+
+; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+define i32* @return_arg_callee(i32* %arg1, i32* %arg2) {
+  ret i32* %arg1
+}
+; CHECK-LABEL: Function: test_return_arg
+; CHECK: NoAlias: i32* %a, i32* %b
+; CHECK: MayAlias: i32* %a, i32* %c
+; CHECK: NoAlias: i32* %b, i32* %c
+
+; Temporarily disable modref checks
+; NoModRef: Ptr: i32* %a <-> %c = call i32* @return_arg_callee(i32* %a, i32* %b)
+; NoModRef: Ptr: i32* %b <-> %c = call i32* @return_arg_callee(i32* %a, i32* %b)
+; NoModRef: Ptr: i32* %c <-> %c = call i32* @return_arg_callee(i32* %a, i32* %b)
+define void @test_return_arg() {
+  %a = alloca i32, align 4
+  %b = alloca i32, align 4
+
+  %c = call i32* @return_arg_callee(i32* %a, i32* %b)
+
+  ret void
+}

external/llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/interproc-ret-deref-arg-multilevel.ll

@@ -0,0 +1,52 @@
+; This testcase ensures that CFL AA answers queries soundly when callee tries 
+; to return the multi-level dereference of one of its parameters
+
+; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+define i32* @return_deref_arg_multilevel_callee(i32*** %arg1) {
+	%deref = load i32**, i32*** %arg1
+	%deref2 = load i32*, i32** %deref
+	ret i32* %deref2
+}
+; CHECK-LABEL: Function: test_return_deref_arg_multilevel
+; CHECK: NoAlias: i32* %a, i32* %b
+; CHECK: MayAlias: i32* %a, i32* %c
+; CHECK: NoAlias: i32* %b, i32* %c
+; CHECK: NoAlias: i32* %c, i32** %p
+; CHECK: NoAlias: i32* %c, i32*** %pp
+; CHECK: MayAlias: i32** %lpp, i32** %p
+; CHECK: NoAlias: i32** %lpp, i32*** %pp
+; CHECK: NoAlias: i32* %c, i32** %lpp
+; CHECK: MayAlias: i32* %a, i32* %lpp_deref
+; CHECK: NoAlias: i32* %b, i32* %lpp_deref
+; CHECK: NoAlias: i32* %lpp_deref, i32*** %pp
+; CHECK: MayAlias: i32* %a, i32* %lp
+; CHECK: NoAlias: i32* %b, i32* %lp
+; CHECK: NoAlias: i32* %lp, i32** %p
+; CHECK: NoAlias: i32* %lp, i32*** %pp
+; CHECK: MayAlias: i32* %c, i32* %lp
+; CHECK: NoAlias: i32* %lp, i32** %lpp
+; CHECK: MayAlias: i32* %lp, i32* %lpp_deref
+
+; Temporarily disable modref checks
+; Just Ref: Ptr: i32** %p <-> %c = call i32* @return_deref_arg_multilevel_callee(i32*** %pp)
+; Just Ref: Ptr: i32*** %pp <-> %c = call i32* @return_deref_arg_multilevel_callee(i32*** %pp)
+; Just Ref: Ptr: i32** %lpp <-> %c = call i32* @return_deref_arg_multilevel_callee(i32*** %pp)
+
+define void @test_return_deref_arg_multilevel() {
+  %a = alloca i32, align 4
+  %b = alloca i32, align 4
+  %p = alloca i32*, align 8
+  %pp = alloca i32**, align 8
+
+  store i32* %a, i32** %p
+  store i32** %p, i32*** %pp
+  %c = call i32* @return_deref_arg_multilevel_callee(i32*** %pp)
+
+  %lpp = load i32**, i32*** %pp
+  %lpp_deref = load i32*, i32** %lpp
+  %lp = load i32*, i32** %p
+
+  ret void
+}

external/llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/interproc-ret-deref-arg.ll

@@ -0,0 +1,37 @@
+; This testcase ensures that CFL AA answers queries soundly when callee tries 
+; to return the dereference of one of its parameters
+
+; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+define i32* @return_deref_arg_callee(i32** %arg1) {
+  %deref = load i32*, i32** %arg1
+  ret i32* %deref
+}
+; CHECK-LABEL: Function: test_return_deref_arg
+; CHECK: NoAlias: i32* %a, i32* %b
+; CHECK: MayAlias: i32* %a, i32* %c
+; CHECK: NoAlias: i32* %b, i32* %c
+; CHECK: MayAlias: i32* %a, i32* %lp
+; CHECK: NoAlias: i32* %b, i32* %lp
+; CHECK: NoAlias: i32* %lp, i32** %p
+; CHECK: MayAlias: i32* %c, i32* %lp
+
+; Temporarily disable modref checks
+; NoModRef: Ptr: i32* %a <-> %c = call i32* @return_deref_arg_callee(i32** %p)
+; NoModRef: Ptr: i32* %b <-> %c = call i32* @return_deref_arg_callee(i32** %p)
+; Just Ref: Ptr: i32** %p <-> %c = call i32* @return_deref_arg_callee(i32** %p)
+; NoModRef: Ptr: i32* %c <-> %c = call i32* @return_deref_arg_callee(i32** %p)
+; NoModRef: Ptr: i32* %lp <-> %c = call i32* @return_deref_arg_callee(i32** %p)
+define void @test_return_deref_arg() {
+  %a = alloca i32, align 4
+  %b = alloca i32, align 4
+  %p = alloca i32*, align 8
+
+  store i32* %a, i32** %p
+  %c = call i32* @return_deref_arg_callee(i32** %p)
+
+  %lp = load i32*, i32** %p
+
+  ret void
+}

external/llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/interproc-ret-escape.ll

@@ -0,0 +1,33 @@
+; This testcase ensures that CFL AA answers queries soundly when callee tries 
+; to return an escaped pointer
+
+; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+declare noalias i8* @malloc(i64)
+declare void @opaque(i32*)
+
+define i32* @return_escaped_callee() {
+	%ptr = call noalias i8* @malloc(i64 8)
+	%ptr_cast = bitcast i8* %ptr to i32*
+	call void @opaque(i32* %ptr_cast)
+	ret i32* %ptr_cast
+}
+; CHECK-LABEL: Function: test_return_escape
+; CHECK: NoAlias: i32* %a, i32** %x
+; CHECK: NoAlias: i32* %b, i32** %x
+; CHECK: NoAlias: i32* %a, i32* %b
+; CHECK: NoAlias: i32* %c, i32** %x
+; CHECK: NoAlias: i32* %a, i32* %c
+; CHECK: NoAlias: i32* %b, i32* %c
+; CHECK: NoAlias: i32* %a, i32* %d
+; CHECK: MayAlias: i32* %b, i32* %d
+; CHECK: MayAlias: i32* %c, i32* %d
+define void @test_return_escape(i32** %x) {
+  %a = alloca i32, align 4
+  %b = call i32* @return_escaped_callee()
+  %c = call i32* @return_escaped_callee()
+  %d = load i32*, i32** %x
+
+  ret void
+}

external/llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/interproc-ret-ref-arg-multilevel.ll

@@ -0,0 +1,53 @@
+; This testcase ensures that CFL AA answers queries soundly when callee tries 
+; to return the multi-level reference of one of its parameters
+
+; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+declare noalias i8* @malloc(i64)
+
+define i32*** @return_ref_arg_multilevel_callee(i32* %arg1) {
+	%ptr = call noalias i8* @malloc(i64 8)
+	%ptr_cast = bitcast i8* %ptr to i32***
+  %ptr2 = call noalias i8* @malloc(i64 8)
+  %ptr_cast2 = bitcast i8* %ptr2 to i32**
+	store i32* %arg1, i32** %ptr_cast2
+  store i32** %ptr_cast2, i32*** %ptr_cast
+	ret i32*** %ptr_cast
+}
+; CHECK-LABEL: Function: test_return_ref_arg_multilevel
+; CHECK: NoAlias: i32* %a, i32*** %b
+; CHECK: NoAlias: i32** %p, i32*** %b
+; CHECK: NoAlias: i32*** %b, i32*** %pp
+; CHECK: NoAlias: i32* %a, i32** %lb
+; CHECK: NoAlias: i32** %lb, i32** %p
+; CHECK: NoAlias: i32** %lb, i32*** %pp
+; CHECK: NoAlias: i32** %lb, i32*** %b
+; CHECK: MayAlias: i32* %a, i32* %lb_deref
+; CHECK: NoAlias: i32* %lb_deref, i32** %lpp
+; CHECK: MayAlias: i32* %lb_deref, i32* %lpp_deref
+; CHECK: NoAlias: i32* %lpp_deref, i32** %lpp
+; CHECK: MayAlias: i32* %lb_deref, i32* %lp
+; CHECK: NoAlias: i32* %lp, i32** %lpp
+; CHECK: MayAlias: i32* %lp, i32* %lpp_deref
+
+; Temporarily disable modref checks
+; Just Mod: Ptr: i32*** %b <-> %b = call i32*** @return_ref_arg_multilevel_callee(i32* %a)
+; Just Mod: Ptr: i32** %lb <-> %b = call i32*** @return_ref_arg_multilevel_callee(i32* %a)
+define void @test_return_ref_arg_multilevel() {
+  %a = alloca i32, align 4
+  %p = alloca i32*, align 8
+  %pp = alloca i32**, align 8
+
+  store i32* %a, i32** %p
+  store i32** %p, i32*** %pp
+  %b = call i32*** @return_ref_arg_multilevel_callee(i32* %a)
+
+  %lb = load i32**, i32*** %b
+  %lb_deref = load i32*, i32** %lb
+  %lpp = load i32**, i32*** %pp
+  %lpp_deref = load i32*, i32** %lpp
+  %lp = load i32*, i32** %p
+
+  ret void
+}

external/llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/interproc-ret-ref-arg.ll

@@ -0,0 +1,37 @@
+; This testcase ensures that CFL AA answers queries soundly when callee tries 
+; to return the reference of one of its parameters
+
+; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+declare noalias i8* @malloc(i64)
+
+define i32** @return_ref_arg_callee(i32* %arg1) {
+	%ptr = call noalias i8* @malloc(i64 8)
+	%ptr_cast = bitcast i8* %ptr to i32**
+	store i32* %arg1, i32** %ptr_cast
+	ret i32** %ptr_cast
+}
+; CHECK-LABEL: Function: test_return_ref_arg
+; CHECK: NoAlias: i32** %b, i32** %p
+; CHECK: MayAlias: i32* %a, i32* %lb
+; CHECK: NoAlias: i32* %lb, i32** %p
+; CHECK: NoAlias: i32* %lb, i32** %b
+; CHECK: NoAlias: i32* %lp, i32** %p
+; CHECK: NoAlias: i32* %lp, i32** %b
+; CHECK: MayAlias: i32* %lb, i32* %lp
+
+; Temporarily disable modref checks
+; Just Mod: Ptr: i32** %b <-> %b = call i32** @return_ref_arg_callee(i32* %a)
+define void @test_return_ref_arg() {
+  %a = alloca i32, align 4
+  %p = alloca i32*, align 8
+
+  store i32* %a, i32** %p
+  %b = call i32** @return_ref_arg_callee(i32* %a)
+
+  %lb = load i32*, i32** %b
+  %lp = load i32*, i32** %p
+
+  ret void
+}

external/llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/interproc-ret-unknown.ll

@@ -0,0 +1,38 @@
+; This testcase ensures that CFL AA answers queries soundly when callee tries 
+; to return an unknown pointer
+
+; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+@g = external global i32
+define i32* @return_unknown_callee(i32* %arg1, i32* %arg2) {
+	ret i32* @g
+}
+; CHECK-LABEL: Function: test_return_unknown
+; CHECK: NoAlias: i32* %a, i32* %b
+; CHECK: MayAlias: i32* %c, i32* %x
+; CHECK: NoAlias: i32* %a, i32* %c
+; CHECK: NoAlias: i32* %b, i32* %c
+define void @test_return_unknown(i32* %x) {
+  %a = alloca i32, align 4
+  %b = alloca i32, align 4
+
+  %c = call i32* @return_unknown_callee(i32* %a, i32* %b)
+
+  ret void
+}
+
+@g2 = external global i32*
+define i32** @return_unknown_callee2() {
+	ret i32** @g2
+}
+; CHECK-LABEL: Function: test_return_unknown2
+; CHECK: MayAlias: i32* %x, i32** %a
+; CHECK: MayAlias: i32* %b, i32* %x
+; CHECK: MayAlias: i32* %b, i32** %a
+define void @test_return_unknown2(i32* %x) {
+  %a = call i32** @return_unknown_callee2()
+  %b = load i32*, i32** %a
+
+  ret void
+}

external/llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/interproc-store-arg-multilevel.ll

@@ -0,0 +1,45 @@
+; This testcase ensures that CFL AA answers queries soundly when callee tries 
+; to mutate the memory pointed to by its parameters
+
+; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+declare noalias i8* @malloc(i64)
+
+define void @store_arg_multilevel_callee(i32*** %arg1, i32* %arg2) {
+  %ptr = call noalias i8* @malloc(i64 8)
+  %ptr_cast = bitcast i8* %ptr to i32**
+	store i32* %arg2, i32** %ptr_cast
+  store i32** %ptr_cast, i32*** %arg1
+	ret void
+}
+; CHECK-LABEL: Function: test_store_arg_multilevel
+; CHECK: NoAlias: i32* %a, i32* %b
+; CHECK: NoAlias: i32* %a, i32** %lpp
+; CHECK: NoAlias: i32* %b, i32** %lpp
+; CHECK: MayAlias: i32** %lpp, i32** %p
+; CHECK: MayAlias: i32* %a, i32* %lpp_deref
+; CHECK: MayAlias: i32* %b, i32* %lpp_deref
+; CHECK: NoAlias: i32* %lpp_deref, i32** %p
+; CHECK: NoAlias: i32* %lpp_deref, i32*** %pp
+; CHECK: NoAlias: i32* %lpp_deref, i32** %lpp
+; CHECK: MayAlias: i32* %a, i32* %lp
+; CHECK: NoAlias: i32* %lp, i32*** %pp
+; CHECK: NoAlias: i32* %lp, i32** %lpp
+; CHECK: MayAlias: i32* %lp, i32* %lpp_deref
+define void @test_store_arg_multilevel() {
+  %a = alloca i32, align 4
+  %b = alloca i32, align 4
+  %p = alloca i32*, align 8
+  %pp = alloca i32**, align 8
+
+  store i32* %a, i32** %p
+  store i32** %p, i32*** %pp
+  call void @store_arg_multilevel_callee(i32*** %pp, i32* %b)
+
+  %lpp = load i32**, i32*** %pp
+  %lpp_deref = load i32*, i32** %lpp
+  %lp = load i32*, i32** %p
+
+  ret void
+}

external/llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/interproc-store-arg-unknown.ll

@@ -0,0 +1,32 @@
+; This testcase ensures that CFL AA answers queries soundly when callee tries 
+; to mutate the memory pointed to by its parameters
+
+; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+@g = external global i32
+
+define void @store_arg_unknown_callee(i32** %arg1) {
+	store i32* @g, i32** %arg1
+	ret void
+}
+; CHECK-LABEL: Function: test_store_arg_unknown
+; CHECK: NoAlias: i32* %x, i32** %p
+; CHECK: NoAlias: i32* %a, i32** %p
+; CHECK: NoAlias: i32* %b, i32** %p
+; CHECK: MayAlias: i32* %lp, i32* %x
+; CHECK: MayAlias: i32* %a, i32* %lp
+; CHECK: NoAlias: i32* %b, i32* %lp
+; CHECK: NoAlias: i32* %lp, i32** %p
+define void @test_store_arg_unknown(i32* %x) {
+  %a = alloca i32, align 4
+  %b = alloca i32, align 4
+  %p = alloca i32*, align 8
+
+  store i32* %a, i32** %p
+  call void @store_arg_unknown_callee(i32** %p)
+
+  %lp = load i32*, i32** %p
+
+  ret void
+}

external/llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/interproc-store-arg.ll

@@ -0,0 +1,40 @@
+; This testcase ensures that CFL AA answers queries soundly when callee tries 
+; to mutate the memory pointed to by its parameters
+
+; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+define void @store_arg_callee(i32** %arg1, i32* %arg2) {
+	store i32* %arg2, i32** %arg1
+	ret void
+}
+; CHECK-LABEL: Function: test_store_arg
+; CHECK: NoAlias: i32* %a, i32* %b
+; CHECK: NoAlias: i32* %a, i32** %p
+; CHECK: NoAlias: i32* %b, i32** %p
+; CHECK: MayAlias: i32* %a, i32* %lp
+; CHECK: MayAlias: i32* %b, i32* %lp
+; CHECK: NoAlias: i32* %a, i32* %lq
+; CHECK: MayAlias: i32* %b, i32* %lq
+; CHECK: MayAlias: i32* %lp, i32* %lq
+
+; Temporarily disable modref checks
+; NoModRef: Ptr: i32* %a <-> call void @store_arg_callee(i32** %p, i32* %b)
+; Just Ref: Ptr: i32* %b <-> call void @store_arg_callee(i32** %p, i32* %b)
+; Just Mod: Ptr: i32** %p  <-> call void @store_arg_callee(i32** %p, i32* %b)
+; NoModRef: Ptr: i32** %q  <-> call void @store_arg_callee(i32** %p, i32* %b)
+define void @test_store_arg() {
+  %a = alloca i32, align 4
+  %b = alloca i32, align 4
+  %p = alloca i32*, align 8
+  %q = alloca i32*, align 8
+
+  store i32* %a, i32** %p
+  store i32* %b, i32** %q
+  call void @store_arg_callee(i32** %p, i32* %b)
+
+  %lp = load i32*, i32** %p
+  %lq = load i32*, i32** %q
+
+  ret void
+}

external/llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/memalias.ll

@@ -0,0 +1,21 @@
+; This testcase ensures that CFL AA correctly handles simple memory alias 
+; pattern
+
+; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+; CHECK-LABEL: Function: test_memalias
+; CHECK: NoAlias: i64* %a, i64** %b
+; CHECK: NoAlias: i32** %c, i64* %a
+; CHECK: MayAlias: i32* %d, i64* %a
+; CHECK: NoAlias: i32* %d, i64** %b
+; CHECK: NoAlias: i32* %d, i32** %c
+define void @test_memalias() {
+  %a = alloca i64, align 8
+  %b = alloca i64*, align 8
+  store i64* %a, i64** %b
+
+  %c = bitcast i64** %b to i32**
+  %d = load i32*, i32** %c
+  ret void
+}

external/llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/struct.ll

@@ -0,0 +1,18 @@
+; Ensures that our struct ops are sane.
+
+; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+; Since we ignore non-pointer values, we effectively ignore extractvalue
+; instructions. This means that %c "doesn't exist" in test_structure's graph,
+; so we currently get MayAlias.
+; XFAIL: *
+
+; CHECK-LABEL: Function: test_structure
+; CHECK: NoAlias: i64** %c, { i64**, i64** }* %a
+define void @test_structure() {
+  %a = alloca {i64**, i64**}, align 8
+  %b = load {i64**, i64**}, {i64**, i64**}* %a
+  %c = extractvalue {i64**, i64**} %b, 0
+  ret void
+}