Copy clang/Driver/<Option parsing stuff> to llvm.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169344 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/CMakeLists.txt b/utils/TableGen/CMakeLists.txt
index d0416c9..0527aa6 100644
--- a/utils/TableGen/CMakeLists.txt
+++ b/utils/TableGen/CMakeLists.txt
@@ -24,6 +24,7 @@
FixedLenDecoderEmitter.cpp
InstrInfoEmitter.cpp
IntrinsicEmitter.cpp
+ OptParserEmitter.cpp
PseudoLoweringEmitter.cpp
RegisterInfoEmitter.cpp
SetTheory.cpp
diff --git a/utils/TableGen/OptParserEmitter.cpp b/utils/TableGen/OptParserEmitter.cpp
new file mode 100644
index 0000000..5dab9e6
--- /dev/null
+++ b/utils/TableGen/OptParserEmitter.cpp
@@ -0,0 +1,267 @@
+//===- OptParserEmitter.cpp - Table Driven Command Line Parsing -----------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/TableGen/Error.h"
+#include "llvm/TableGen/Record.h"
+#include "llvm/TableGen/TableGenBackend.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/Twine.h"
+
+#include <map>
+
+using namespace llvm;
+
+static int StrCmpOptionName(const char *A, const char *B) {
+ char a = *A, b = *B;
+ while (a == b) {
+ if (a == '\0')
+ return 0;
+
+ a = *++A;
+ b = *++B;
+ }
+
+ if (a == '\0') // A is a prefix of B.
+ return 1;
+ if (b == '\0') // B is a prefix of A.
+ return -1;
+
+ // Otherwise lexicographic.
+ return (a < b) ? -1 : 1;
+}
+
+static int CompareOptionRecords(const void *Av, const void *Bv) {
+ const Record *A = *(const Record*const*) Av;
+ const Record *B = *(const Record*const*) Bv;
+
+ // Sentinel options precede all others and are only ordered by precedence.
+ bool ASent = A->getValueAsDef("Kind")->getValueAsBit("Sentinel");
+ bool BSent = B->getValueAsDef("Kind")->getValueAsBit("Sentinel");
+ if (ASent != BSent)
+ return ASent ? -1 : 1;
+
+ // Compare options by name, unless they are sentinels.
+ if (!ASent)
+ if (int Cmp = StrCmpOptionName(A->getValueAsString("Name").c_str(),
+ B->getValueAsString("Name").c_str()))
+ return Cmp;
+
+ if (!ASent) {
+ std::vector<std::string> APrefixes = A->getValueAsListOfStrings("Prefixes");
+ std::vector<std::string> BPrefixes = B->getValueAsListOfStrings("Prefixes");
+
+ for (std::vector<std::string>::const_iterator APre = APrefixes.begin(),
+ AEPre = APrefixes.end(),
+ BPre = BPrefixes.begin(),
+ BEPre = BPrefixes.end();
+ APre != AEPre &&
+ BPre != BEPre;
+ ++APre, ++BPre) {
+ if (int Cmp = StrCmpOptionName(APre->c_str(), BPre->c_str()))
+ return Cmp;
+ }
+ }
+
+ // Then by the kind precedence;
+ int APrec = A->getValueAsDef("Kind")->getValueAsInt("Precedence");
+ int BPrec = B->getValueAsDef("Kind")->getValueAsInt("Precedence");
+ if (APrec == BPrec &&
+ A->getValueAsListOfStrings("Prefixes") ==
+ B->getValueAsListOfStrings("Prefixes")) {
+ PrintError(A->getLoc(), Twine("Option is equivilent to"));
+ PrintError(B->getLoc(), Twine("Other defined here"));
+ PrintFatalError("Equivalent Options found.");
+ }
+ return APrec < BPrec ? -1 : 1;
+}
+
+static const std::string getOptionName(const Record &R) {
+ // Use the record name unless EnumName is defined.
+ if (isa<UnsetInit>(R.getValueInit("EnumName")))
+ return R.getName();
+
+ return R.getValueAsString("EnumName");
+}
+
+static raw_ostream &write_cstring(raw_ostream &OS, llvm::StringRef Str) {
+ OS << '"';
+ OS.write_escaped(Str);
+ OS << '"';
+ return OS;
+}
+
+/// OptParserEmitter - This tablegen backend takes an input .td file
+/// describing a list of options and emits a data structure for parsing and
+/// working with those options when given an input command line.
+namespace llvm {
+void EmitOptParser(RecordKeeper &Records, raw_ostream &OS) {
+ // Get the option groups and options.
+ const std::vector<Record*> &Groups =
+ Records.getAllDerivedDefinitions("OptionGroup");
+ std::vector<Record*> Opts = Records.getAllDerivedDefinitions("Option");
+
+ emitSourceFileHeader("Option Parsing Definitions", OS);
+
+ array_pod_sort(Opts.begin(), Opts.end(), CompareOptionRecords);
+ // Generate prefix groups.
+ typedef SmallVector<SmallString<2>, 2> PrefixKeyT;
+ typedef std::map<PrefixKeyT, std::string> PrefixesT;
+ PrefixesT Prefixes;
+ Prefixes.insert(std::make_pair(PrefixKeyT(), "prefix_0"));
+ unsigned CurPrefix = 0;
+ for (unsigned i = 0, e = Opts.size(); i != e; ++i) {
+ const Record &R = *Opts[i];
+ std::vector<std::string> prf = R.getValueAsListOfStrings("Prefixes");
+ PrefixKeyT prfkey(prf.begin(), prf.end());
+ unsigned NewPrefix = CurPrefix + 1;
+ if (Prefixes.insert(std::make_pair(prfkey, (Twine("prefix_") +
+ Twine(NewPrefix)).str())).second)
+ CurPrefix = NewPrefix;
+ }
+
+ // Dump prefixes.
+
+ OS << "/////////\n";
+ OS << "// Prefixes\n\n";
+ OS << "#ifdef PREFIX\n";
+ OS << "#define COMMA ,\n";
+ for (PrefixesT::const_iterator I = Prefixes.begin(), E = Prefixes.end();
+ I != E; ++I) {
+ OS << "PREFIX(";
+
+ // Prefix name.
+ OS << I->second;
+
+ // Prefix values.
+ OS << ", {";
+ for (PrefixKeyT::const_iterator PI = I->first.begin(),
+ PE = I->first.end(); PI != PE; ++PI) {
+ OS << "\"" << *PI << "\" COMMA ";
+ }
+ OS << "0})\n";
+ }
+ OS << "#undef COMMA\n";
+ OS << "#endif\n\n";
+
+ OS << "/////////\n";
+ OS << "// Groups\n\n";
+ OS << "#ifdef OPTION\n";
+ for (unsigned i = 0, e = Groups.size(); i != e; ++i) {
+ const Record &R = *Groups[i];
+
+ // Start a single option entry.
+ OS << "OPTION(";
+
+ // The option prefix;
+ OS << "0";
+
+ // The option string.
+ OS << ", \"" << R.getValueAsString("Name") << '"';
+
+ // The option identifier name.
+ OS << ", "<< getOptionName(R);
+
+ // The option kind.
+ OS << ", Group";
+
+ // The containing option group (if any).
+ OS << ", ";
+ if (const DefInit *DI = dyn_cast<DefInit>(R.getValueInit("Group")))
+ OS << getOptionName(*DI->getDef());
+ else
+ OS << "INVALID";
+
+ // The other option arguments (unused for groups).
+ OS << ", INVALID, 0, 0";
+
+ // The option help text.
+ if (!isa<UnsetInit>(R.getValueInit("HelpText"))) {
+ OS << ",\n";
+ OS << " ";
+ write_cstring(OS, R.getValueAsString("HelpText"));
+ } else
+ OS << ", 0";
+
+ // The option meta-variable name (unused).
+ OS << ", 0)\n";
+ }
+ OS << "\n";
+
+ OS << "//////////\n";
+ OS << "// Options\n\n";
+ for (unsigned i = 0, e = Opts.size(); i != e; ++i) {
+ const Record &R = *Opts[i];
+
+ // Start a single option entry.
+ OS << "OPTION(";
+
+ // The option prefix;
+ std::vector<std::string> prf = R.getValueAsListOfStrings("Prefixes");
+ OS << Prefixes[PrefixKeyT(prf.begin(), prf.end())] << ", ";
+
+ // The option string.
+ write_cstring(OS, R.getValueAsString("Name"));
+
+ // The option identifier name.
+ OS << ", "<< getOptionName(R);
+
+ // The option kind.
+ OS << ", " << R.getValueAsDef("Kind")->getValueAsString("Name");
+
+ // The containing option group (if any).
+ OS << ", ";
+ if (const DefInit *DI = dyn_cast<DefInit>(R.getValueInit("Group")))
+ OS << getOptionName(*DI->getDef());
+ else
+ OS << "INVALID";
+
+ // The option alias (if any).
+ OS << ", ";
+ if (const DefInit *DI = dyn_cast<DefInit>(R.getValueInit("Alias")))
+ OS << getOptionName(*DI->getDef());
+ else
+ OS << "INVALID";
+
+ // The option flags.
+ const ListInit *LI = R.getValueAsListInit("Flags");
+ if (LI->empty()) {
+ OS << ", 0";
+ } else {
+ OS << ", ";
+ for (unsigned i = 0, e = LI->size(); i != e; ++i) {
+ if (i)
+ OS << " | ";
+ OS << cast<DefInit>(LI->getElement(i))->getDef()->getName();
+ }
+ }
+
+ // The option parameter field.
+ OS << ", " << R.getValueAsInt("NumArgs");
+
+ // The option help text.
+ if (!isa<UnsetInit>(R.getValueInit("HelpText"))) {
+ OS << ",\n";
+ OS << " ";
+ write_cstring(OS, R.getValueAsString("HelpText"));
+ } else
+ OS << ", 0";
+
+ // The option meta-variable name.
+ OS << ", ";
+ if (!isa<UnsetInit>(R.getValueInit("MetaVarName")))
+ write_cstring(OS, R.getValueAsString("MetaVarName"));
+ else
+ OS << "0";
+
+ OS << ")\n";
+ }
+ OS << "#endif\n";
+}
+} // end namespace llvm
diff --git a/utils/TableGen/TableGen.cpp b/utils/TableGen/TableGen.cpp
index 8250b8c..06be55b 100644
--- a/utils/TableGen/TableGen.cpp
+++ b/utils/TableGen/TableGen.cpp
@@ -40,7 +40,8 @@
GenTgtIntrinsic,
GenEDInfo,
PrintEnums,
- PrintSets
+ PrintSets,
+ GenOptParserDefs
};
namespace {
@@ -82,6 +83,8 @@
"Print enum values for a class"),
clEnumValN(PrintSets, "print-sets",
"Print expanded sets for testing DAG exprs"),
+ clEnumValN(GenOptParserDefs, "gen-opt-parser-defs",
+ "Generate option definitions"),
clEnumValEnd));
cl::opt<std::string>
@@ -138,6 +141,9 @@
case GenEDInfo:
EmitEnhancedDisassemblerInfo(Records, OS);
break;
+ case GenOptParserDefs:
+ EmitOptParser(Records, OS);
+ break;
case PrintEnums:
{
std::vector<Record*> Recs = Records.getAllDerivedDefinitions(Class);
diff --git a/utils/TableGen/TableGenBackends.h b/utils/TableGen/TableGenBackends.h
index f0d25d8..4c0d8dc 100644
--- a/utils/TableGen/TableGenBackends.h
+++ b/utils/TableGen/TableGenBackends.h
@@ -75,5 +75,6 @@
void EmitRegisterInfo(RecordKeeper &RK, raw_ostream &OS);
void EmitSubtarget(RecordKeeper &RK, raw_ostream &OS);
void EmitMapTable(RecordKeeper &RK, raw_ostream &OS);
+void EmitOptParser(RecordKeeper &RK, raw_ostream &OS);
} // End llvm namespace