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/EDEmitter.cpp b/utils/TableGen/EDEmitter.cpp
index fe484ca..bd98308 100644
--- a/utils/TableGen/EDEmitter.cpp
+++ b/utils/TableGen/EDEmitter.cpp
@@ -13,192 +13,199 @@
//
//===----------------------------------------------------------------------===//
-#include "EDEmitter.h"
-
#include "AsmWriterInst.h"
#include "CodeGenTarget.h"
-
-#include "llvm/TableGen/Record.h"
#include "llvm/MC/EDInstInfo.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/raw_ostream.h"
-
+#include "llvm/TableGen/Record.h"
+#include "llvm/TableGen/TableGenBackend.h"
#include <string>
#include <vector>
using namespace llvm;
+// TODO: There's a suspiciously large amount of "table" data in this
+// backend which should probably be in the TableGen file itself.
+
///////////////////////////////////////////////////////////
// Support classes for emitting nested C data structures //
///////////////////////////////////////////////////////////
+// TODO: These classes are probably generally useful to other backends;
+// add them to TableGen's "helper" API's.
+
namespace {
+class EnumEmitter {
+private:
+ std::string Name;
+ std::vector<std::string> Entries;
+public:
+ EnumEmitter(const char *N) : Name(N) {
+ }
+ int addEntry(const char *e) {
+ Entries.push_back(std::string(e));
+ return Entries.size() - 1;
+ }
+ void emit(raw_ostream &o, unsigned int &i) {
+ o.indent(i) << "enum " << Name.c_str() << " {" << "\n";
+ i += 2;
- class EnumEmitter {
- private:
- std::string Name;
- std::vector<std::string> Entries;
- public:
- EnumEmitter(const char *N) : Name(N) {
- }
- int addEntry(const char *e) {
- Entries.push_back(std::string(e));
- return Entries.size() - 1;
- }
- void emit(raw_ostream &o, unsigned int &i) {
- o.indent(i) << "enum " << Name.c_str() << " {" << "\n";
- i += 2;
-
- unsigned int index = 0;
- unsigned int numEntries = Entries.size();
- for (index = 0; index < numEntries; ++index) {
- o.indent(i) << Entries[index];
- if (index < (numEntries - 1))
- o << ",";
- o << "\n";
- }
-
- i -= 2;
- o.indent(i) << "};" << "\n";
+ unsigned int index = 0;
+ unsigned int numEntries = Entries.size();
+ for (index = 0; index < numEntries; ++index) {
+ o.indent(i) << Entries[index];
+ if (index < (numEntries - 1))
+ o << ",";
+ o << "\n";
}
- void emitAsFlags(raw_ostream &o, unsigned int &i) {
- o.indent(i) << "enum " << Name.c_str() << " {" << "\n";
- i += 2;
+ i -= 2;
+ o.indent(i) << "};" << "\n";
+ }
- unsigned int index = 0;
- unsigned int numEntries = Entries.size();
- unsigned int flag = 1;
- for (index = 0; index < numEntries; ++index) {
- o.indent(i) << Entries[index] << " = " << format("0x%x", flag);
- if (index < (numEntries - 1))
- o << ",";
- o << "\n";
- flag <<= 1;
- }
+ void emitAsFlags(raw_ostream &o, unsigned int &i) {
+ o.indent(i) << "enum " << Name.c_str() << " {" << "\n";
+ i += 2;
- i -= 2;
- o.indent(i) << "};" << "\n";
+ unsigned int index = 0;
+ unsigned int numEntries = Entries.size();
+ unsigned int flag = 1;
+ for (index = 0; index < numEntries; ++index) {
+ o.indent(i) << Entries[index] << " = " << format("0x%x", flag);
+ if (index < (numEntries - 1))
+ o << ",";
+ o << "\n";
+ flag <<= 1;
}
+
+ i -= 2;
+ o.indent(i) << "};" << "\n";
+ }
+};
+} // End anonymous namespace
+
+namespace {
+class ConstantEmitter {
+public:
+ virtual ~ConstantEmitter() { }
+ virtual void emit(raw_ostream &o, unsigned int &i) = 0;
+};
+} // End anonymous namespace
+
+namespace {
+class LiteralConstantEmitter : public ConstantEmitter {
+private:
+ bool IsNumber;
+ union {
+ int Number;
+ const char* String;
};
+public:
+ LiteralConstantEmitter(int number = 0) :
+ IsNumber(true),
+ Number(number) {
+ }
+ void set(const char *string) {
+ IsNumber = false;
+ Number = 0;
+ String = string;
+ }
+ bool is(const char *string) {
+ return !strcmp(String, string);
+ }
+ void emit(raw_ostream &o, unsigned int &i) {
+ if (IsNumber)
+ o << Number;
+ else
+ o << String;
+ }
+};
+} // End anonymous namespace
- class ConstantEmitter {
- public:
- virtual ~ConstantEmitter() { }
- virtual void emit(raw_ostream &o, unsigned int &i) = 0;
- };
+namespace {
+class CompoundConstantEmitter : public ConstantEmitter {
+private:
+ unsigned int Padding;
+ std::vector<ConstantEmitter *> Entries;
+public:
+ CompoundConstantEmitter(unsigned int padding = 0) : Padding(padding) {
+ }
+ CompoundConstantEmitter &addEntry(ConstantEmitter *e) {
+ Entries.push_back(e);
- class LiteralConstantEmitter : public ConstantEmitter {
- private:
- bool IsNumber;
- union {
- int Number;
- const char* String;
- };
- public:
- LiteralConstantEmitter(int number = 0) :
- IsNumber(true),
- Number(number) {
+ return *this;
+ }
+ ~CompoundConstantEmitter() {
+ while (Entries.size()) {
+ ConstantEmitter *entry = Entries.back();
+ Entries.pop_back();
+ delete entry;
}
- void set(const char *string) {
- IsNumber = false;
- Number = 0;
- String = string;
+ }
+ void emit(raw_ostream &o, unsigned int &i) {
+ o << "{" << "\n";
+ i += 2;
+
+ unsigned int index;
+ unsigned int numEntries = Entries.size();
+
+ unsigned int numToPrint;
+
+ if (Padding) {
+ if (numEntries > Padding) {
+ fprintf(stderr, "%u entries but %u padding\n", numEntries, Padding);
+ llvm_unreachable("More entries than padding");
+ }
+ numToPrint = Padding;
+ } else {
+ numToPrint = numEntries;
}
- bool is(const char *string) {
- return !strcmp(String, string);
- }
- void emit(raw_ostream &o, unsigned int &i) {
- if (IsNumber)
- o << Number;
+
+ for (index = 0; index < numToPrint; ++index) {
+ o.indent(i);
+ if (index < numEntries)
+ Entries[index]->emit(o, i);
else
- o << String;
+ o << "-1";
+
+ if (index < (numToPrint - 1))
+ o << ",";
+ o << "\n";
}
- };
- class CompoundConstantEmitter : public ConstantEmitter {
- private:
- unsigned int Padding;
- std::vector<ConstantEmitter *> Entries;
- public:
- CompoundConstantEmitter(unsigned int padding = 0) : Padding(padding) {
+ i -= 2;
+ o.indent(i) << "}";
+ }
+};
+} // End anonymous namespace
+
+namespace {
+class FlagsConstantEmitter : public ConstantEmitter {
+private:
+ std::vector<std::string> Flags;
+public:
+ FlagsConstantEmitter() {
+ }
+ FlagsConstantEmitter &addEntry(const char *f) {
+ Flags.push_back(std::string(f));
+ return *this;
+ }
+ void emit(raw_ostream &o, unsigned int &i) {
+ unsigned int index;
+ unsigned int numFlags = Flags.size();
+ if (numFlags == 0)
+ o << "0";
+
+ for (index = 0; index < numFlags; ++index) {
+ o << Flags[index].c_str();
+ if (index < (numFlags - 1))
+ o << " | ";
}
- CompoundConstantEmitter &addEntry(ConstantEmitter *e) {
- Entries.push_back(e);
-
- return *this;
- }
- ~CompoundConstantEmitter() {
- while (Entries.size()) {
- ConstantEmitter *entry = Entries.back();
- Entries.pop_back();
- delete entry;
- }
- }
- void emit(raw_ostream &o, unsigned int &i) {
- o << "{" << "\n";
- i += 2;
-
- unsigned int index;
- unsigned int numEntries = Entries.size();
-
- unsigned int numToPrint;
-
- if (Padding) {
- if (numEntries > Padding) {
- fprintf(stderr, "%u entries but %u padding\n", numEntries, Padding);
- llvm_unreachable("More entries than padding");
- }
- numToPrint = Padding;
- } else {
- numToPrint = numEntries;
- }
-
- for (index = 0; index < numToPrint; ++index) {
- o.indent(i);
- if (index < numEntries)
- Entries[index]->emit(o, i);
- else
- o << "-1";
-
- if (index < (numToPrint - 1))
- o << ",";
- o << "\n";
- }
-
- i -= 2;
- o.indent(i) << "}";
- }
- };
-
- class FlagsConstantEmitter : public ConstantEmitter {
- private:
- std::vector<std::string> Flags;
- public:
- FlagsConstantEmitter() {
- }
- FlagsConstantEmitter &addEntry(const char *f) {
- Flags.push_back(std::string(f));
- return *this;
- }
- void emit(raw_ostream &o, unsigned int &i) {
- unsigned int index;
- unsigned int numFlags = Flags.size();
- if (numFlags == 0)
- o << "0";
-
- for (index = 0; index < numFlags; ++index) {
- o << Flags[index].c_str();
- if (index < (numFlags - 1))
- o << " | ";
- }
- }
- };
-}
-
-EDEmitter::EDEmitter(RecordKeeper &R) : Records(R) {
-}
+ }
+};
+} // End anonymous namespace
/// populateOperandOrder - Accepts a CodeGenInstruction and generates its
/// AsmWriterInst for the desired assembly syntax, giving an ordered list of
@@ -213,9 +220,9 @@
/// representing an index in the operand descriptor array.
/// @arg inst - The instruction to use when looking up the operands
/// @arg syntax - The syntax to use, according to LLVM's enumeration
-void populateOperandOrder(CompoundConstantEmitter *operandOrder,
- const CodeGenInstruction &inst,
- unsigned syntax) {
+static void populateOperandOrder(CompoundConstantEmitter *operandOrder,
+ const CodeGenInstruction &inst,
+ unsigned syntax) {
unsigned int numArgs = 0;
AsmWriterInst awInst(inst, syntax, -1, -1);
@@ -975,17 +982,23 @@
o << "\n";
}
-void EDEmitter::run(raw_ostream &o) {
+namespace llvm {
+
+void EmitEnhancedDisassemblerInfo(RecordKeeper &RK, raw_ostream &OS) {
+ emitSourceFileHeader("Enhanced Disassembler Info", OS);
unsigned int i = 0;
CompoundConstantEmitter infoArray;
- CodeGenTarget target(Records);
+ CodeGenTarget target(RK);
populateInstInfo(infoArray, target);
- emitCommonEnums(o, i);
+ emitCommonEnums(OS, i);
- o << "static const llvm::EDInstInfo instInfo" << target.getName() << "[] = ";
- infoArray.emit(o, i);
- o << ";" << "\n";
+ OS << "static const llvm::EDInstInfo instInfo"
+ << target.getName() << "[] = ";
+ infoArray.emit(OS, i);
+ OS << ";" << "\n";
}
+
+} // End llvm namespace