Write llvm-tblgen backends as functions instead of sub-classes.
The TableGenBackend base class doesn't do much, and will be removed
completely soon.
Patch by Sean Silva!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158311 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/AsmWriterEmitter.cpp b/utils/TableGen/AsmWriterEmitter.cpp
index d079b45..bd153a8 100644
--- a/utils/TableGen/AsmWriterEmitter.cpp
+++ b/utils/TableGen/AsmWriterEmitter.cpp
@@ -12,7 +12,6 @@
//
//===----------------------------------------------------------------------===//
-#include "AsmWriterEmitter.h"
#include "AsmWriterInst.h"
#include "CodeGenTarget.h"
#include "StringToOffsetTable.h"
@@ -22,9 +21,41 @@
#include "llvm/Support/MathExtras.h"
#include "llvm/TableGen/Error.h"
#include "llvm/TableGen/Record.h"
+#include "llvm/TableGen/TableGenBackend.h"
#include <algorithm>
+#include <cassert>
+#include <map>
+#include <vector>
using namespace llvm;
+namespace {
+class AsmWriterEmitter {
+ RecordKeeper &Records;
+ std::map<const CodeGenInstruction*, AsmWriterInst*> CGIAWIMap;
+ std::vector<const CodeGenInstruction*> NumberedInstructions;
+public:
+ AsmWriterEmitter(RecordKeeper &R) : Records(R) {}
+
+ void run(raw_ostream &o);
+
+private:
+ void EmitPrintInstruction(raw_ostream &o);
+ void EmitGetRegisterName(raw_ostream &o);
+ void EmitPrintAliasInstruction(raw_ostream &O);
+
+ 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,
+ std::vector<unsigned> &InstOpsUsed) const;
+};
+} // end anonymous namespace
+
static void PrintCases(std::vector<std::pair<std::string,
AsmWriterOperand> > &OpsToPrint, raw_ostream &O) {
O << " case " << OpsToPrint.back().first << ": ";
@@ -928,10 +959,17 @@
}
void AsmWriterEmitter::run(raw_ostream &O) {
- EmitSourceFileHeader("Assembly Writer Source Fragment", O);
-
EmitPrintInstruction(O);
EmitGetRegisterName(O);
EmitPrintAliasInstruction(O);
}
+
+namespace llvm {
+
+void EmitAsmWriter(RecordKeeper &RK, raw_ostream &OS) {
+ emitSourceFileHeader("Assembly Writer Source Fragment", OS);
+ AsmWriterEmitter(RK).run(OS);
+}
+
+} // End llvm namespace