From 07c58d00625200741cefe6dad8505f6138cf34a9 Mon Sep 17 00:00:00 2001
From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Tue, 30 Apr 2019 12:34:21 +0000
Subject: [PATCH] Revert rL359519 : [MemorySSA] Invalidate MemorySSA if AA or
 DT are invalidated.

Summary:
MemorySSA keeps internal pointers of AA and DT.
If these get invalidated, so should MemorySSA.

Reviewers: george.burgess.iv, chandlerc

Subscribers: jlebar, Prazek, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D61043
........
This was causing windows build bot failures

llvm-svn: 359555
---
 include/llvm/Analysis/MemorySSA.h     |  3 --
 lib/Analysis/MemorySSA.cpp            |  9 -----
 test/Analysis/MemorySSA/invalidate.ll | 53 ---------------------------
 3 files changed, 65 deletions(-)
 delete mode 100644 test/Analysis/MemorySSA/invalidate.ll

diff --git a/include/llvm/Analysis/MemorySSA.h b/include/llvm/Analysis/MemorySSA.h
index a0a1030c5df..8812da6016a 100644
--- a/include/llvm/Analysis/MemorySSA.h
+++ b/include/llvm/Analysis/MemorySSA.h
@@ -936,9 +936,6 @@ public:
     MemorySSA &getMSSA() { return *MSSA.get(); }
 
     std::unique_ptr<MemorySSA> MSSA;
-
-    bool invalidate(Function &F, const PreservedAnalyses &PA,
-                    FunctionAnalysisManager::Invalidator &Inv);
   };
 
   Result run(Function &F, FunctionAnalysisManager &AM);
diff --git a/lib/Analysis/MemorySSA.cpp b/lib/Analysis/MemorySSA.cpp
index bdaa26409dd..271d56d3ecd 100644
--- a/lib/Analysis/MemorySSA.cpp
+++ b/lib/Analysis/MemorySSA.cpp
@@ -2213,15 +2213,6 @@ MemorySSAAnalysis::Result MemorySSAAnalysis::run(Function &F,
   return MemorySSAAnalysis::Result(llvm::make_unique<MemorySSA>(F, &AA, &DT));
 }
 
-bool MemorySSAAnalysis::Result::invalidate(
-    Function &F, const PreservedAnalyses &PA,
-    FunctionAnalysisManager::Invalidator &Inv) {
-  auto PAC = PA.getChecker<MemorySSAAnalysis>();
-  return !(PAC.preserved() || PAC.preservedSet<AllAnalysesOn<Function>>()) ||
-         Inv.invalidate<AAManager>(F, PA) ||
-         Inv.invalidate<DominatorTreeAnalysis>(F, PA);
-}
-
 PreservedAnalyses MemorySSAPrinterPass::run(Function &F,
                                             FunctionAnalysisManager &AM) {
   OS << "MemorySSA for function: " << F.getName() << "\n";
diff --git a/test/Analysis/MemorySSA/invalidate.ll b/test/Analysis/MemorySSA/invalidate.ll
deleted file mode 100644
index 42359e1c320..00000000000
--- a/test/Analysis/MemorySSA/invalidate.ll
+++ /dev/null
@@ -1,53 +0,0 @@
-; RUN: opt -aa-pipeline=basic-aa -passes='require<memoryssa>,invalidate<aa>,early-cse-memssa' \
-; RUN:     -debug-pass-manager -disable-output %s 2>&1 \
-; RUN:     | FileCheck %s --check-prefix=CHECK-AA-INVALIDATE
-; RUN: opt -aa-pipeline=basic-aa -passes='require<memoryssa>,invalidate<domtree>,early-cse-memssa' \
-; RUN:     -debug-pass-manager -disable-output %s 2>&1 \
-; RUN:     | FileCheck %s --check-prefix=CHECK-DT-INVALIDATE
-
-; CHECK-AA-INVALIDATE: Running analysis: MemorySSAAnalysis
-; CHECK-AA-INVALIDATE: Running analysis: DominatorTreeAnalysis
-; CHECK-AA-INVALIDATE: Running analysis: AAManager
-; CHECK-AA-INVALIDATE: Running analysis: BasicAA
-; CHECK-AA-INVALIDATE: Running pass: InvalidateAnalysisPass<llvm::AAManager>
-; CHECK-AA-INVALIDATE: Invalidating analysis: AAManager
-; CHECK-AA-INVALIDATE: Invalidating analysis: MemorySSAAnalysis
-; CHECK-AA-INVALIDATE: Running pass: EarlyCSEPass
-; CHECK-AA-INVALIDATE: Running analysis: MemorySSAAnalysis
-; CHECK-AA-INVALIDATE: Running analysis: AAManager
-
-; CHECK-DT-INVALIDATE: Running analysis: MemorySSAAnalysis
-; CHECK-DT-INVALIDATE: Running analysis: DominatorTreeAnalysis
-; CHECK-DT-INVALIDATE: Running analysis: AAManager
-; CHECK-DT-INVALIDATE: Running analysis: BasicAA
-; CHECK-DT-INVALIDATE: InvalidateAnalysisPass<llvm::DominatorTreeAnalysis>
-; CHECK-DT-INVALIDATE: Invalidating analysis: DominatorTreeAnalysis
-; CHECK-DT-INVALIDATE: Invalidating analysis: BasicAA
-; CHECK-DT-INVALIDATE: Invalidating analysis: AAManager
-; CHECK-DT-INVALIDATE: Invalidating analysis: MemorySSAAnalysis
-; CHECK-DT-INVALIDATE: Running pass: EarlyCSEPass
-; CHECK-DT-INVALIDATE: Running analysis: DominatorTreeAnalysis
-; CHECK-DT-INVALIDATE: Running analysis: MemorySSAAnalysis
-; CHECK-DT-INVALIDATE: Running analysis: AAManager
-; CHECK-DT-INVALIDATE: Running analysis: BasicAA
-
-
-; Function Attrs: ssp uwtable
-define i32 @main() {
-entry:
-  %call = call noalias i8* @_Znwm(i64 4)
-  %0 = bitcast i8* %call to i32*
-  %call1 = call noalias i8* @_Znwm(i64 4)
-  %1 = bitcast i8* %call1 to i32*
-  store i32 5, i32* %0, align 4
-  store i32 7, i32* %1, align 4
-  %2 = load i32, i32* %0, align 4
-  %3 = load i32, i32* %1, align 4
-  %4 = load i32, i32* %0, align 4
-  %5 = load i32, i32* %1, align 4
-  %add = add nsw i32 %3, %5
-  ret i32 %add
-}
-
-declare noalias i8* @_Znwm(i64)
-