From c15d60b772b1d02134b3d3bdd8e456ed33674279 Mon Sep 17 00:00:00 2001
From: Peter Collingbourne <peter@pcc.me.uk>
Date: Mon, 1 May 2017 20:42:32 +0000
Subject: Object: Remove ModuleSummaryIndexObjectFile class.

Differential Revision: https://reviews.llvm.org/D32195

llvm-svn: 301832
---
 llvm/lib/Bitcode/Reader/BitcodeReader.cpp | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'llvm/lib/Bitcode/Reader/BitcodeReader.cpp')

diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index 11b0cf1..12d5be5 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -93,6 +93,13 @@ static cl::opt<bool> PrintSummaryGUIDs(
     cl::desc(
         "Print the global id for each value when reading the module summary"));
 
+// FIXME: This flag should either be removed or moved to clang as a driver flag.
+static llvm::cl::opt<bool> IgnoreEmptyThinLTOIndexFile(
+    "ignore-empty-index-file", llvm::cl::ZeroOrMore,
+    llvm::cl::desc(
+        "Ignore an empty index file and perform non-ThinLTO compilation"),
+    llvm::cl::init(false));
+
 namespace {
 
 enum {
@@ -5609,3 +5616,14 @@ Expected<bool> llvm::hasGlobalValueSummary(MemoryBufferRef Buffer) {
 
   return BM->hasSummary();
 }
+
+Expected<std::unique_ptr<ModuleSummaryIndex>>
+llvm::getModuleSummaryIndexForFile(StringRef Path) {
+  ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr =
+      MemoryBuffer::getFileOrSTDIN(Path);
+  if (!FileOrErr)
+    return errorCodeToError(FileOrErr.getError());
+  if (IgnoreEmptyThinLTOIndexFile && !(*FileOrErr)->getBufferSize())
+    return nullptr;
+  return getModuleSummaryIndex(**FileOrErr);
+}
-- 
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