From: Chris Lattner <sabre@nondot.org>
Date: Tue, 23 Nov 2010 19:38:22 +0000 (+0000)
Subject: r120013 dropped passing in the precomputed file size to
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=f8f6129861f3972dab2c5a6cde29711ac780a7d0;p=clang

r120013 dropped passing in the precomputed file size to
MemoryBuffer::getFile, causing us to pick up a fstat for
every file.  Restore the optimization.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120032 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Basic/FileManager.cpp b/lib/Basic/FileManager.cpp
index 9572aaadb7..b884388c0b 100644
--- a/lib/Basic/FileManager.cpp
+++ b/lib/Basic/FileManager.cpp
@@ -394,11 +394,12 @@ llvm::MemoryBuffer *FileManager::
 getBufferForFile(const FileEntry *Entry, std::string *ErrorStr) {
   llvm::StringRef Filename = Entry->getName();
   if (FileSystemOpts.WorkingDir.empty())
-    return llvm::MemoryBuffer::getFile(Filename, ErrorStr);
+    return llvm::MemoryBuffer::getFile(Filename, ErrorStr, Entry->getSize());
   
   llvm::sys::Path FilePath(Filename);
   FixupRelativePath(FilePath, FileSystemOpts);
-  return llvm::MemoryBuffer::getFile(FilePath.c_str(), ErrorStr);
+  return llvm::MemoryBuffer::getFile(FilePath.c_str(), ErrorStr,
+                                     Entry->getSize());
 }
 
 llvm::MemoryBuffer *FileManager::
diff --git a/lib/Basic/FileSystemStatCache.cpp b/lib/Basic/FileSystemStatCache.cpp
index 3e13740cab..738af41a9e 100644
--- a/lib/Basic/FileSystemStatCache.cpp
+++ b/lib/Basic/FileSystemStatCache.cpp
@@ -24,7 +24,6 @@ MemorizeStatCalls::getStat(const char *Path, struct stat &StatBuf) {
   if (Result == CacheMiss)
     Result = ::stat(Path, &StatBuf) ? CacheHitMissing : CacheHitExists;
   
-  
   // Do not cache failed stats, it is easy to construct common inconsistent
   // situations if we do, and they are not important for PCH performance (which
   // currently only needs the stats to construct the initial FileManager