Turn off dump/emit routines when building minimal subzero.

src/IceTranslator.cpp

Index: src/IceTranslator.cpp
diff --git a/src/IceTranslator.cpp b/src/IceTranslator.cpp
index 08e5697a3e6e5ef2f38374555857600e357a8176..954da474018d51d3cac732fb5af66432f9b05430 100644
--- a/src/IceTranslator.cpp
+++ b/src/IceTranslator.cpp
@@ -106,8 +106,8 @@ void Translator::lowerGlobals(
   llvm::OwningPtr<TargetGlobalInitLowering> GlobalLowering(
       TargetGlobalInitLowering::createLowering(Ctx->getTargetArch(), Ctx));
   bool DisableTranslation = Ctx->getFlags().DisableTranslation;
-  bool DumpGlobalVariables =
-      Ctx->isVerbose() && Ctx->getFlags().VerboseFocusOn.empty();
+  const bool DumpGlobalVariables =
+      ALLOW_DUMP && Ctx->isVerbose() && Ctx->getFlags().VerboseFocusOn.empty();
   Ostream &Stream = Ctx->getStrDump();
   const IceString &TranslateOnly = Ctx->getFlags().TranslateOnly;
   for (const Ice::VariableDeclaration *Global : VariableDeclarations) {