[llvm-commits] [llvm] r45238 - in /llvm/trunk: include/llvm/LinkTimeOptimizer.h tools/lto/lto.cpp

[Devang Patel]

Author: dpatel
Date: Wed Dec 19 18:24:01 2007
New Revision: 45238

URL: http://llvm.org/viewvc/llvm-project?rev=45238&view=rev
Log:
Add lto version check mechanism.

Modified:
    llvm/trunk/include/llvm/LinkTimeOptimizer.h
    llvm/trunk/tools/lto/lto.cpp

Modified: llvm/trunk/include/llvm/LinkTimeOptimizer.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/LinkTimeOptimizer.h?rev=45238&r1=45237&r2=45238&view=diff

==============================================================================
--- llvm/trunk/include/llvm/LinkTimeOptimizer.h (original)
+++ llvm/trunk/include/llvm/LinkTimeOptimizer.h Wed Dec 19 18:24:01 2007
@@ -20,6 +20,8 @@
 #include <set>
 #include <llvm/ADT/hash_map>
 
+#define LLVM_LTO_VERSION 1
+
 namespace llvm {
 
   class Module;
@@ -148,6 +150,6 @@
 /// linker to use dlopen() interface to dynamically load LinkTimeOptimizer.
 /// extern "C" helps, because dlopen() interface uses name to find the symbol.
 extern "C"
-llvm::LinkTimeOptimizer *createLLVMOptimizer();
+llvm::LinkTimeOptimizer *createLLVMOptimizer(unsigned VERSION = LLVM_LTO_VERSION);
 
 #endif

Modified: llvm/trunk/tools/lto/lto.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/lto/lto.cpp?rev=45238&r1=45237&r2=45238&view=diff

==============================================================================
--- llvm/trunk/tools/lto/lto.cpp (original)
+++ llvm/trunk/tools/lto/lto.cpp Wed Dec 19 18:24:01 2007
@@ -45,8 +45,11 @@
 using namespace llvm;
 
 extern "C"
-llvm::LinkTimeOptimizer *createLLVMOptimizer()
+llvm::LinkTimeOptimizer *createLLVMOptimizer(unsigned VERSION)
 {
+  if (VERSION != LLVM_LTO_VERSION)
+    return NULL;
+
   llvm::LTO *l = new llvm::LTO();
   return l;
 }