[llvm-commits] [llvm] r94632 - /llvm/trunk/lib/Linker/LinkModules.cpp

[Victor Hernandez]

Author: hernande
Date: Tue Jan 26 18:30:42 2010
New Revision: 94632

URL: http://llvm.org/viewvc/llvm-project?rev=94632&view=rev
Log:
Linker needs to do deep-copy of function-local metadata to update references to function arguments

Modified:
    llvm/trunk/lib/Linker/LinkModules.cpp

Modified: llvm/trunk/lib/Linker/LinkModules.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Linker/LinkModules.cpp?rev=94632&r1=94631&r2=94632&view=diff

==============================================================================
--- llvm/trunk/lib/Linker/LinkModules.cpp (original)
+++ llvm/trunk/lib/Linker/LinkModules.cpp Tue Jan 26 18:30:42 2010
@@ -392,7 +392,19 @@
       assert(!isa<GlobalValue>(CPV) && "Unmapped global?");
       llvm_unreachable("Unknown type of derived type constant value!");
     }
-  } else if (isa<MDNode>(In) ||  isa<MDString>(In)) {
+  } else if (const MDNode *MD = dyn_cast<MDNode>(In)) {
+    if (MD->isFunctionLocal()) {
+      SmallVector<Value*, 4> Elts;
+      for (unsigned i = 0, e = MD->getNumOperands(); i != e; ++i) {
+        Value *Op = MD->getOperand(i);
+        // LinkFunctionBody() already handled non-argument values.
+        Elts.push_back(isa<Argument>(Op) ? RemapOperand(Op, ValueMap) : Op);
+      }
+      Result = MDNode::get(In->getContext(), Elts.data(), MD->getNumOperands());
+    } else {
+      Result = const_cast<Value*>(In);
+    }
+  } else if (isa<MDString>(In)) {
     Result = const_cast<Value*>(In);
   } else if (isa<InlineAsm>(In)) {
     Result = const_cast<Value*>(In);