Subzero: Clean up function header emission.

src/IceCfg.cpp

Index: src/IceCfg.cpp
diff --git a/src/IceCfg.cpp b/src/IceCfg.cpp
index 2900a764e1f98e1bc3d5cadfc9736378efb0f4fd..2a1fdb68d52291e4f5e83d6ca1357621f49d3862 100644
--- a/src/IceCfg.cpp
+++ b/src/IceCfg.cpp
@@ -423,7 +423,8 @@ void Cfg::doBranchOpt() {
 // the target lowering class.
 void Cfg::emitTextHeader(const IceString &MangledName, GlobalContext *Ctx,
                          const Assembler *Asm) {
-  // Note: Still used by emit IAS.
+  if (!ALLOW_DUMP)
+    return;
   Ostream &Str = Ctx->getStrEmit();
   Str << "\t.text\n";
   if (Ctx->getFlags().getFunctionSections())
@@ -436,8 +437,6 @@ void Cfg::emitTextHeader(const IceString &MangledName, GlobalContext *Ctx,
   for (uint8_t I : Asm->getNonExecBundlePadding())
     Str.write_hex(I);
   Str << "\n";
-  if (Ctx->getFlags().getUseSandboxing())
-    Str << "\t.bundle_align_mode " << Asm->getBundleAlignLog2Bytes() << "\n";
   Str << MangledName << ":\n";
 }