mcize lcomm, simplify .comm, extend both to support 64-bit sizes.

llvm-svn: 94299
diff --git a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index fc2c5a0..f4d8864 100644
--- a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -196,9 +196,9 @@
       return;
     }
     
-    if (const char *LComm = MAI->getLCOMMDirective()) {
+    if (MAI->hasLCOMMDirective()) {
       // .lcomm _foo, 42
-      O << LComm << *GVSym << ',' << Size << '\n';
+      OutStreamer.EmitLocalCommonSymbol(GVSym, Size);
       return;
     }