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/DisassemblerEmitter.cpp b/utils/TableGen/DisassemblerEmitter.cpp
index 4650197..826465a 100644
--- a/utils/TableGen/DisassemblerEmitter.cpp
+++ b/utils/TableGen/DisassemblerEmitter.cpp
@@ -7,13 +7,12 @@
//
//===----------------------------------------------------------------------===//
-#include "DisassemblerEmitter.h"
#include "CodeGenTarget.h"
#include "X86DisassemblerTables.h"
#include "X86RecognizableInstr.h"
-#include "FixedLenDecoderEmitter.h"
#include "llvm/TableGen/Error.h"
#include "llvm/TableGen/Record.h"
+#include "llvm/TableGen/TableGenBackend.h"
using namespace llvm;
using namespace llvm::X86Disassembler;
@@ -94,26 +93,27 @@
/// X86RecognizableInstr.cpp contains the implementation for a single
/// instruction.
-void DisassemblerEmitter::run(raw_ostream &OS) {
- CodeGenTarget Target(Records);
+namespace llvm {
- OS << "/*===- TableGen'erated file "
- << "---------------------------------------*- C -*-===*\n"
- << " *\n"
- << " * " << Target.getName() << " Disassembler\n"
- << " *\n"
- << " * Automatically generated file, do not edit!\n"
- << " *\n"
- << " *===---------------------------------------------------------------"
- << "-------===*/\n";
+extern void EmitFixedLenDecoder(RecordKeeper &RK, raw_ostream &OS,
+ std::string PredicateNamespace,
+ std::string GPrefix,
+ std::string GPostfix,
+ std::string ROK,
+ std::string RFail,
+ std::string L);
+
+void EmitDisassembler(RecordKeeper &Records, raw_ostream &OS) {
+ CodeGenTarget Target(Records);
+ emitSourceFileHeader(" * " + Target.getName() + " Disassembler", OS);
// X86 uses a custom disassembler.
if (Target.getName() == "X86") {
DisassemblerTables Tables;
-
+
const std::vector<const CodeGenInstruction*> &numberedInstructions =
Target.getInstructionsByEnumValue();
-
+
for (unsigned i = 0, e = numberedInstructions.size(); i != e; ++i)
RecognizableInstr::processInstr(Tables, *numberedInstructions[i], i);
@@ -130,13 +130,18 @@
// ARM and Thumb have a CHECK() macro to deal with DecodeStatuses.
if (Target.getName() == "ARM" ||
Target.getName() == "Thumb") {
- FixedLenDecoderEmitter(Records,
- "ARM",
- "if (!Check(S, ", ")) return MCDisassembler::Fail;",
- "S", "MCDisassembler::Fail",
- " MCDisassembler::DecodeStatus S = MCDisassembler::Success;\n(void)S;").run(OS);
+ EmitFixedLenDecoder(Records, OS, "ARM",
+ "if (!Check(S, ", ")) return MCDisassembler::Fail;",
+ "S", "MCDisassembler::Fail",
+ " MCDisassembler::DecodeStatus S = "
+ "MCDisassembler::Success;\n(void)S;");
return;
}
- FixedLenDecoderEmitter(Records, Target.getName()).run(OS);
+ EmitFixedLenDecoder(Records, OS, Target.getName(),
+ "if (", " == MCDisassembler::Fail)"
+ " return MCDisassembler::Fail;",
+ "MCDisassembler::Success", "MCDisassembler::Fail", "");
}
+
+} // End llvm namespace