Darwin supports quoted labels. This implements:

test/Regression/CodeGen/PowerPC/darwin-labels.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24287 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/PowerPC/PPCAsmPrinter.cpp

@@ -446,6 +446,9 @@ bool DarwinAsmPrinter::doInitialization(Module &M) {
   if (TM.getSubtarget<PPCSubtarget>().isGigaProcessor())
     O << "\t.machine ppc970\n";
   AsmPrinter::doInitialization(M);
+  
+  // Darwin wants symbols to be quoted if they have complex names.
+  Mang->setUseQuotes(true);
   return false;
 }