From: Reid Spencer <rspencer@reidspencer.com>
Date: Wed, 8 Aug 2007 19:52:29 +0000 (+0000)
Subject: Allow the filename "-" to be a place holder for stdin. This allows directing
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=53424ad141bc1298c3d1cbd28d5c823950541788;p=oota-llvm.git

Allow the filename "-" to be a place holder for stdin. This allows directing
stdin through llvm-ld and llvm-link.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40938 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Linker/LinkItems.cpp b/lib/Linker/LinkItems.cpp
index 3cf1f6bd8cd..ad0ccd2e3c1 100644
--- a/lib/Linker/LinkItems.cpp
+++ b/lib/Linker/LinkItems.cpp
@@ -14,6 +14,8 @@
 
 #include "llvm/Linker.h"
 #include "llvm/Module.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Bitcode/ReaderWriter.h"
 
 using namespace llvm;
 
@@ -153,6 +155,20 @@ bool Linker::LinkInLibraries(const std::vector<std::string> &Libraries) {
 ///
 bool Linker::LinkInFile(const sys::Path &File, bool &is_native) {
   is_native = false;
+  
+  // Check for a file of name "-", which means "read standard input"
+  if (File.toString() == "-") {
+    std::auto_ptr<Module> M;
+    if (MemoryBuffer *Buffer = MemoryBuffer::getSTDIN()) {
+      M.reset(ParseBitcodeFile(Buffer, &Error));
+      delete Buffer;
+      if (!LinkInModule(M.get()))
+        return false;
+    } else 
+      Error = "standard input is empty";
+    return error("Cannot link stdin: " + Error);
+  }
+
   // Make sure we can at least read the file
   if (!File.canRead())
     return error("Cannot find linker input '" + File.toString() + "'");