[llvm-commits] [llvm] r61754 - in /llvm/trunk: lib/Transforms/IPO/Internalize.cpp test/Transforms/Internalize/2009-01-05-InternalizeAliases.ll

[Duncan Sands]

Author: baldrick
Date: Mon Jan  5 15:24:45 2009
New Revision: 61754

URL: http://llvm.org/viewvc/llvm-project?rev=61754&view=rev
Log:
Teach the internalize pass to also internalize
global aliases.

Added:
    llvm/trunk/test/Transforms/Internalize/2009-01-05-InternalizeAliases.ll
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=61754&r1=61753&r2=61754&view=diff

==============================================================================
--- llvm/trunk/lib/Transforms/IPO/Internalize.cpp (original)
+++ llvm/trunk/lib/Transforms/IPO/Internalize.cpp Mon Jan  5 15:24:45 2009
@@ -26,6 +26,7 @@
 #include <set>
 using namespace llvm;
 
+STATISTIC(NumAliases  , "Number of aliases internalized");
 STATISTIC(NumFunctions, "Number of functions internalized");
 STATISTIC(NumGlobals  , "Number of global vars internalized");
 
@@ -158,6 +159,17 @@
       DOUT << "Internalized gvar " << I->getName() << "\n";
     }
 
+  // Mark all aliases that are not in the api as internal as well.
+  for (Module::alias_iterator I = M.alias_begin(), E = M.alias_end();
+       I != E; ++I)
+    if (!I->isDeclaration() && !I->hasInternalLinkage() &&
+        !ExternalNames.count(I->getName())) {
+      I->setLinkage(GlobalValue::InternalLinkage);
+      Changed = true;
+      ++NumAliases;
+      DOUT << "Internalized alias " << I->getName() << "\n";
+    }
+
   return Changed;
 }
 

Added: llvm/trunk/test/Transforms/Internalize/2009-01-05-InternalizeAliases.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/Internalize/2009-01-05-InternalizeAliases.ll?rev=61754&view=auto

==============================================================================
--- llvm/trunk/test/Transforms/Internalize/2009-01-05-InternalizeAliases.ll (added)
+++ llvm/trunk/test/Transforms/Internalize/2009-01-05-InternalizeAliases.ll Mon Jan  5 15:24:45 2009
@@ -0,0 +1,10 @@
+; RUN: llvm-as < %s | opt -internalize | llvm-dis | grep internal | count 3
+
+ at A = global i32 0
+ at B = alias i32* @A
+ at C = alias i32* @B
+
+define i32 @main() {
+	%tmp = load i32* @C
+	ret i32 %tmp
+}