From 6512dabcd3250853633923c21ec0c122d020fefe Mon Sep 17 00:00:00 2001
From: Easwaran Raman <eraman@google.com>
Date: Fri, 5 May 2017 22:15:09 +0000
Subject: [PATCH] Override invalidate of ProfileSummaryInfo to return false.

Differential revision: https://reviews.llvm.org/D32775

llvm-svn: 302308
---
 llvm/include/llvm/Analysis/ProfileSummaryInfo.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/llvm/include/llvm/Analysis/ProfileSummaryInfo.h b/llvm/include/llvm/Analysis/ProfileSummaryInfo.h
index 1aec35c3e677..75c4cbd03706 100644
--- a/llvm/include/llvm/Analysis/ProfileSummaryInfo.h
+++ b/llvm/include/llvm/Analysis/ProfileSummaryInfo.h
@@ -54,6 +54,18 @@ public:
   ProfileSummaryInfo(Module &M) : M(M) {}
   ProfileSummaryInfo(ProfileSummaryInfo &&Arg)
       : M(Arg.M), Summary(std::move(Arg.Summary)) {}
+
+  /// Handle the invalidation of this information.
+  ///
+  /// When used as a result of \c ProfileSummaryAnalysis this method will be
+  /// called when the module this was computed for changes. Since profile
+  /// summary is immutable after it is annotated on the module, we return false
+  /// here.
+  bool invalidate(Module &, const PreservedAnalyses &,
+                  ModuleAnalysisManager::Invalidator &) {
+    return false;
+  }
+
   /// Returns the profile count for \p CallInst.
   static Optional<uint64_t> getProfileCount(const Instruction *CallInst,
                                             BlockFrequencyInfo *BFI);