From 5a7056fa039d3fd5e241d7db8e44c063214ec4ca Mon Sep 17 00:00:00 2001
From: Easwaran Raman <eraman@google.com>
Date: Thu, 13 Dec 2018 19:54:27 +0000
Subject: [ThinLTO] Compute synthetic function entry count

Summary:
This patch computes the synthetic function entry count on the whole
program callgraph (based on module summary) and writes the entry counts
to the summary. After function importing, this count gets attached to
the IR as metadata. Since it adds a new field to the summary, this bumps
up the version.

Reviewers: tejohnson

Subscribers: mehdi_amini, inglorion, llvm-commits

Differential Revision: https://reviews.llvm.org/D43521

llvm-svn: 349076
---
 llvm/lib/Analysis/ModuleSummaryAnalysis.cpp | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

(limited to 'llvm/lib/Analysis/ModuleSummaryAnalysis.cpp')

diff --git a/llvm/lib/Analysis/ModuleSummaryAnalysis.cpp b/llvm/lib/Analysis/ModuleSummaryAnalysis.cpp
index fe318548b64..6bda1d1b1a3 100644
--- a/llvm/lib/Analysis/ModuleSummaryAnalysis.cpp
+++ b/llvm/lib/Analysis/ModuleSummaryAnalysis.cpp
@@ -396,9 +396,9 @@ static void computeFunctionSummary(ModuleSummaryIndex &Index, const Module &M,
       // Don't try to import functions with noinline attribute.
       F.getAttributes().hasFnAttribute(Attribute::NoInline)};
   auto FuncSummary = llvm::make_unique<FunctionSummary>(
-      Flags, NumInsts, FunFlags, std::move(Refs), CallGraphEdges.takeVector(),
-      TypeTests.takeVector(), TypeTestAssumeVCalls.takeVector(),
-      TypeCheckedLoadVCalls.takeVector(),
+      Flags, NumInsts, FunFlags, /*EntryCount=*/0, std::move(Refs),
+      CallGraphEdges.takeVector(), TypeTests.takeVector(),
+      TypeTestAssumeVCalls.takeVector(), TypeCheckedLoadVCalls.takeVector(),
       TypeTestAssumeConstVCalls.takeVector(),
       TypeCheckedLoadConstVCalls.takeVector());
   if (NonRenamableLocal)
@@ -509,14 +509,15 @@ ModuleSummaryIndex llvm::buildModuleSummaryIndex(
           if (Function *F = dyn_cast<Function>(GV)) {
             std::unique_ptr<FunctionSummary> Summary =
                 llvm::make_unique<FunctionSummary>(
-                    GVFlags, 0,
+                    GVFlags, /*InstCount=*/0,
                     FunctionSummary::FFlags{
                         F->hasFnAttribute(Attribute::ReadNone),
                         F->hasFnAttribute(Attribute::ReadOnly),
                         F->hasFnAttribute(Attribute::NoRecurse),
                         F->returnDoesNotAlias(),
                         /* NoInline = */ false},
-                    ArrayRef<ValueInfo>{}, ArrayRef<FunctionSummary::EdgeTy>{},
+                    /*EntryCount=*/0, ArrayRef<ValueInfo>{},
+                    ArrayRef<FunctionSummary::EdgeTy>{},
                     ArrayRef<GlobalValue::GUID>{},
                     ArrayRef<FunctionSummary::VFuncId>{},
                     ArrayRef<FunctionSummary::VFuncId>{},
-- 
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