Completely change the structure of the generated asmprinter to be more table

based and less switch-statements-with-hundreds-of-cases based.  This shrinks
the x86 asmprinters to about 1/3 their previous size.

Other improvements coming.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29177 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 20 insertions, 1 deletions

diff --git a/utils/TableGen/AsmWriterEmitter.h b/utils/TableGen/AsmWriterEmitter.h
index 155dfc83c0..c7a9c60bff 100644
--- a/utils/TableGen/AsmWriterEmitter.h
+++ b/utils/TableGen/AsmWriterEmitter.h
@@ -16,16 +16,35 @@
 #define ASMWRITER_EMITTER_H
 
 #include "TableGenBackend.h"
+#include <map>
+#include <vector>
+#include <cassert>
 
 namespace llvm {
-
+  class AsmWriterInst;
+  class CodeGenInstruction;
+  
   class AsmWriterEmitter : public TableGenBackend {
     RecordKeeper &Records;
+    std::map<const CodeGenInstruction*, AsmWriterInst*> CGIAWIMap;
+    std::vector<const CodeGenInstruction*> NumberedInstructions;
   public:
     AsmWriterEmitter(RecordKeeper &R) : Records(R) {}
 
     // run - Output the asmwriter, returning true on failure.
     void run(std::ostream &o);
+
+private:
+    AsmWriterInst *getAsmWriterInstByID(unsigned ID) const {
+      assert(ID < NumberedInstructions.size());
+      std::map<const CodeGenInstruction*, AsmWriterInst*>::const_iterator I =
+        CGIAWIMap.find(NumberedInstructions[ID]);
+      assert(I != CGIAWIMap.end() && "Didn't find inst!");
+      return I->second;
+    }
+    void FindUniqueOperandCommands(std::vector<std::string> &UOC,
+                                   std::vector<unsigned> &InstIdxs, 
+                                   unsigned Op) const;
   };
 }
 #endif