From 4854a2a120d13d0c7ff93268de4ee3a05c1e8027 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 18 Jul 2006 07:07:51 +0000
Subject: [PATCH] simple optimization: don't bother calling "exists" (which
 calls the syscall "access").  Instead, just let the open call fail if the
 file doesn't exist. This reduces the # syscalls executed.

llvm-svn: 29173
---
 lib/System/Unix/MappedFile.inc | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/lib/System/Unix/MappedFile.inc b/lib/System/Unix/MappedFile.inc
index 148372b0cc3..341ee254890 100644
--- a/lib/System/Unix/MappedFile.inc
+++ b/lib/System/Unix/MappedFile.inc
@@ -40,9 +40,6 @@ struct sys::MappedFileInfo {
 };
 
 void MappedFile::initialize() {
-  if (!path_.exists())
-    throw std::string("Can't open file: ") + path_.toString();
-  
   int mode = 0;
   if (options_ & READ_ACCESS) 
     if (options_ & WRITE_ACCESS)