Add a MCTargetStreamer interface.

This patch fixes an old FIXME by creating a MCTargetStreamer interface
and moving the target specific functions for ARM, Mips and PPC to it.

The ARM streamer is still declared in a common place because it is
used from lib/CodeGen/ARMException.cpp, but the Mips and PPC are
completely hidden in the corresponding Target directories.

I will send an email to llvmdev with instructions on how to use this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192181 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 53 deletions

diff --git a/lib/MC/MCStreamer.cpp b/lib/MC/MCStreamer.cpp
index bac58063a4..04e36bedc0 100644
--- a/lib/MC/MCStreamer.cpp
+++ b/lib/MC/MCStreamer.cpp
@@ -22,10 +22,15 @@
 #include <cstdlib>
 using namespace llvm;
 
-MCStreamer::MCStreamer(MCContext &Ctx)
-    : Context(Ctx), EmitEHFrame(true), EmitDebugFrame(false),
-      CurrentW64UnwindInfo(0), LastSymbol(0), AutoInitSections(false) {
+MCTargetStreamer::~MCTargetStreamer() {}
+
+MCStreamer::MCStreamer(MCContext &Ctx, MCTargetStreamer *TargetStreamer)
+    : Context(Ctx), TargetStreamer(TargetStreamer), EmitEHFrame(true),
+      EmitDebugFrame(false), CurrentW64UnwindInfo(0), LastSymbol(0),
+      AutoInitSections(false) {
   SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
+  if (TargetStreamer)
+    TargetStreamer->setStreamer(this);
 }
 
 MCStreamer::~MCStreamer() {
@@ -563,56 +568,6 @@ void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
   llvm_unreachable("This file format doesn't support this directive");
 }
 
-void MCStreamer::EmitFnStart() {
-  errs() << "Not implemented yet\n";
-  abort();
-}
-
-void MCStreamer::EmitFnEnd() {
-  errs() << "Not implemented yet\n";
-  abort();
-}
-
-void MCStreamer::EmitCantUnwind() {
-  errs() << "Not implemented yet\n";
-  abort();
-}
-
-void MCStreamer::EmitHandlerData() {
-  errs() << "Not implemented yet\n";
-  abort();
-}
-
-void MCStreamer::EmitPersonality(const MCSymbol *Personality) {
-  errs() << "Not implemented yet\n";
-  abort();
-}
-
-void MCStreamer::EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset) {
-  errs() << "Not implemented yet\n";
-  abort();
-}
-
-void MCStreamer::EmitPad(int64_t Offset) {
-  errs() << "Not implemented yet\n";
-  abort();
-}
-
-void MCStreamer::EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool) {
-  errs() << "Not implemented yet\n";
-  abort();
-}
-
-void MCStreamer::emitMipsHackELFFlags(unsigned Flags) {
-}
-
-void MCStreamer::emitMipsHackSTOCG(MCSymbol *Sym, unsigned Val) {
-}
-
-void MCStreamer::EmitTCEntry(const MCSymbol &S) {
-  llvm_unreachable("Unsupported method");
-}
-
 /// EmitRawText - If this file is backed by an assembly streamer, this dumps
 /// the specified string in the output .s file.  This capability is
 /// indicated by the hasRawTextSupport() predicate.