[llvm-commits] [llvm] r154645 - /llvm/trunk/lib/Transforms/IPO/Internalize.cpp

[Bill Wendling]

Author: void
Date: Thu Apr 12 20:06:27 2012
New Revision: 154645

URL: http://llvm.org/viewvc/llvm-project?rev=154645&view=rev
Log:
Code-gen may inject code into the IR before it emits the ASM. The linker
obviously cannot know that this code is present, let alone used. So prevent the
internalize pass from internalizing those global values which code-gen may
insert.

Modified:
    llvm/trunk/lib/Transforms/IPO/Internalize.cpp

Modified: llvm/trunk/lib/Transforms/IPO/Internalize.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/IPO/Internalize.cpp?rev=154645&r1=154644&r2=154645&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/IPO/Internalize.cpp (original)
+++ llvm/trunk/lib/Transforms/IPO/Internalize.cpp Thu Apr 12 20:06:27 2012
@@ -122,6 +122,9 @@
 
   bool Changed = false;
 
+  // Never internalize functions which code-gen might insert.
+  ExternalNames.insert("__stack_chk_fail");
+
   // Mark all functions not in the api as internal.
   // FIXME: maybe use private linkage?
   for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
@@ -150,6 +153,9 @@
   ExternalNames.insert("llvm.global_dtors");
   ExternalNames.insert("llvm.global.annotations");
 
+  // Never internalize symbols code-gen inserts.
+  ExternalNames.insert("__stack_chk_guard");
+
   // Mark all global variables with initializers that are not in the api as
   // internal as well.
   // FIXME: maybe use private linkage?