Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Analysis/CFLAliasAnalysis/Steensgaard/const-expr-gep.ll

@@ -1,57 +0,0 @@
-; This testcase consists of alias relations which should be completely
-; resolvable by cfl-steens-aa, but require analysis of getelementptr constant exprs.
-; Derived from BasicAA/2003-12-11-ConstExprGEP.ll
-
-; RUN: opt < %s -disable-basicaa -cfl-steens-aa -aa-eval -print-may-aliases -disable-output 2>&1 | FileCheck %s
-
-%T = type { i32, [10 x i8] }
-
-@G = external global %T
-@G2 = external global %T
-
-; TODO: Quite a few of these are MayAlias because we don't yet consider
-; constant offsets in CFLSteensAA. If we start doing so, then we'll need to
-; change these test cases
-
-; CHECK:     Function: test
-; CHECK:     MayAlias: i32* %D, i32* %F
-; CHECK:     MayAlias: i32* %D, i8* %X
-; CHECK:     MayAlias: i32* %F, i8* %X
-define void @test() {
-  %D = getelementptr %T, %T* @G, i64 0, i32 0
-  %F = getelementptr i32, i32* getelementptr (%T, %T* @G, i64 0, i32 0), i64 0
-  %X = getelementptr [10 x i8], [10 x i8]* getelementptr (%T, %T* @G, i64 0, i32 1), i64 0, i64 5
-
-  ret void
-}
-
-; CHECK:     Function: simplecheck
-; CHECK:     MayAlias: i32* %F, i32* %arg0
-; CHECK:     MayAlias: i32* %H, i32* %arg0
-; CHECK:     MayAlias: i32* %F, i32* %H
-define void @simplecheck(i32* %arg0) {
-  %F = getelementptr i32, i32* getelementptr (%T, %T* @G, i64 0, i32 0), i64 0
-  %H = getelementptr %T, %T* @G2, i64 0, i32 0
-
-  ret void
-}
-
-; Ensure that CFLSteensAA properly identifies and handles escaping variables (i.e.
-; globals) in nested ConstantExprs
-
-; CHECK:      Function: checkNesting
-; CHECK:      MayAlias: i32* %A, i32* %arg0
-
-%NestedT = type { [1 x [1 x i32]] }
-@NT = external global %NestedT
-
-define void @checkNesting(i32* %arg0) {
-  %A = getelementptr [1 x i32],
-         [1 x i32]* getelementptr
-           ([1 x [1 x i32]], [1 x [1 x i32]]* getelementptr (%NestedT, %NestedT* @NT, i64 0, i32 0),
-           i64 0,
-           i32 0),
-         i64 0,
-         i32 0
-  ret void
-}