Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/unittests/Analysis/AliasSetTrackerTest.cpp

@@ -1,87 +0,0 @@
-//=======- AliasSetTrackerTest.cpp - Unit test for the Alias Set Tracker  -===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Analysis/AliasAnalysis.h"
-#include "llvm/Analysis/AliasSetTracker.h"
-#include "llvm/Analysis/TypeBasedAliasAnalysis.h"
-#include "llvm/AsmParser/Parser.h"
-#include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/Module.h"
-#include "llvm/Support/SourceMgr.h"
-#include "gtest/gtest.h"
-
-using namespace llvm;
-
-TEST(AliasSetTracker, AliasUnknownInst) {
-  StringRef Assembly = R"(
-    @a = common global i32 0, align 4
-    @b = common global float 0.000000e+00, align 4
-
-    ; Function Attrs: nounwind ssp uwtable
-    define i32 @read_a() #0 {
-      %1 = load i32, i32* @a, align 4, !tbaa !3
-      ret i32 %1
-    }
-
-    ; Function Attrs: nounwind ssp uwtable
-    define void @write_b() #0 {
-      store float 1.000000e+01, float* @b, align 4, !tbaa !7
-      ret void
-    }
-
-    ; Function Attrs: nounwind ssp uwtable
-    define void @test() #0 {
-      %1 = call i32 @read_a(), !tbaa !3
-      call void @write_b(), !tbaa !7
-      ret void
-    }
-
-    !3 = !{!4, !4, i64 0}
-    !4 = !{!"int", !5, i64 0}
-    !5 = !{!"omnipotent char", !6, i64 0}
-    !6 = !{!"Simple C/C++ TBAA"}
-    !7 = !{!8, !8, i64 0}
-    !8 = !{!"float", !5, i64 0}
-  )";
-
-  // Parse the IR. The two calls in @test can not access aliasing elements.
-  LLVMContext Context;
-  SMDiagnostic Error;
-  auto M = parseAssemblyString(Assembly, Error, Context);
-  ASSERT_TRUE(M) << "Bad assembly?";
-
-  // Initialize the alias result.
-  Triple Trip(M->getTargetTriple());
-  TargetLibraryInfoImpl TLII(Trip);
-  TargetLibraryInfo TLI(TLII);
-  AAResults AA(TLI);
-  TypeBasedAAResult TBAAR;
-  AA.addAAResult(TBAAR);
-
-  // Initialize the alias set tracker for the @test function.
-  Function *Test = M->getFunction("test");
-  ASSERT_NE(Test, nullptr);
-  AliasSetTracker AST(AA);
-  for (auto &BB : *Test)
-    AST.add(BB);
-  // There should be 2 disjoint alias sets. 1 from each call. 
-  ASSERT_EQ((int)AST.getAliasSets().size(), 2);
-
-  // Directly test aliasesUnknownInst.
-  // Now every call instruction should only alias one alias set.
-  for (auto &Inst : *Test->begin()) {
-    bool FoundAS = false;
-    for (AliasSet &AS : AST) {
-      if (!AS.aliasesUnknownInst(&Inst, AA))
-        continue;
-      ASSERT_NE(FoundAS, true);
-      FoundAS = true;
-    }
-  }
-}