From 70507e59fe06e187045ad1c6abd518495683f038 Mon Sep 17 00:00:00 2001
From: Peter Collingbourne <peter@pcc.me.uk>
Date: Tue, 17 Nov 2015 23:30:59 +0000
Subject: [PATCH] COFF: Destroy LTOModules as they are linked.

This should help reduce memory consumption during LTO.

Differential Revision: http://reviews.llvm.org/D14672

llvm-svn: 253397
---
 lld/COFF/InputFiles.h    | 1 -
 lld/COFF/SymbolTable.cpp | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/lld/COFF/InputFiles.h b/lld/COFF/InputFiles.h
index ca9ed3f5ddb4..6a263fbaddf6 100644
--- a/lld/COFF/InputFiles.h
+++ b/lld/COFF/InputFiles.h
@@ -205,7 +205,6 @@ public:
   std::vector<SymbolBody *> &getSymbols() override { return SymbolBodies; }
   MachineTypes getMachineType() override;
 
-  LTOModule *getModule() const { return M.get(); }
   std::unique_ptr<LTOModule> takeModule() { return std::move(M); }
 
 private:
diff --git a/lld/COFF/SymbolTable.cpp b/lld/COFF/SymbolTable.cpp
index e9f08f0bf5e8..802d354d5d97 100644
--- a/lld/COFF/SymbolTable.cpp
+++ b/lld/COFF/SymbolTable.cpp
@@ -406,7 +406,7 @@ std::vector<ObjectFile *> SymbolTable::createLTOObjects(LTOCodeGenerator *CG) {
 
   CG->setModule(BitcodeFiles[0]->takeModule());
   for (unsigned I = 1, E = BitcodeFiles.size(); I != E; ++I)
-    CG->addModule(BitcodeFiles[I]->getModule());
+    CG->addModule(BitcodeFiles[I]->takeModule().get());
 
   bool DisableVerify = true;
 #ifdef NDEBUG