Fix crash before main on ppc/linux with static constructors. PR1771


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43676 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCAsmPrinter.cpp b/lib/Target/PowerPC/PPCAsmPrinter.cpp
index 9ff41ca..5341279 100644
--- a/lib/Target/PowerPC/PPCAsmPrinter.cpp
+++ b/lib/Target/PowerPC/PPCAsmPrinter.cpp
@@ -668,6 +668,8 @@
       if (I->hasExternalLinkage()) {
         O << "\t.global " << name << '\n';
         O << "\t.type " << name << ", @object\n";
+        if (TAI->getBSSSection())
+          SwitchToDataSection(TAI->getBSSSection(), I);
         O << name << ":\n";
         O << "\t.zero " << Size << "\n";
       } else if (I->hasInternalLinkage()) {