TableGen: introduce support for MSBuiltin
Add MSBuiltin which is similar in vein to GCCBuiltin. This allows for adding
intrinsics for Microsoft compatibility to individual instructions. This is
needed to permit the creation of ARM specific MSVC extensions.
This is not currently in use, and requires an associated change in clang to
enable use of the intrinsics defined by this new class. This merely sets the
LLVM portion of the infrastructure in place to permit the use of this
functionality. A separate set of changes will enable the new intrinsics.
llvm-svn: 212350
diff --git a/llvm/utils/TableGen/IntrinsicEmitter.cpp b/llvm/utils/TableGen/IntrinsicEmitter.cpp
index 5dba951..430ef32 100644
--- a/llvm/utils/TableGen/IntrinsicEmitter.cpp
+++ b/llvm/utils/TableGen/IntrinsicEmitter.cpp
@@ -54,6 +54,8 @@
raw_ostream &OS);
void EmitIntrinsicToGCCBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints,
raw_ostream &OS);
+ void EmitIntrinsicToMSBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints,
+ raw_ostream &OS);
void EmitSuffix(raw_ostream &OS);
};
} // End anonymous namespace
@@ -96,6 +98,9 @@
// Emit code to translate GCC builtins into LLVM intrinsics.
EmitIntrinsicToGCCBuiltinMap(Ints, OS);
+ // Emit code to translate MS builtins into LLVM intrinsics.
+ EmitIntrinsicToMSBuiltinMap(Ints, OS);
+
EmitSuffix(OS);
}
@@ -790,6 +795,55 @@
OS << "#endif\n\n";
}
+void IntrinsicEmitter::
+EmitIntrinsicToMSBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints,
+ raw_ostream &OS) {
+ std::map<std::string, std::map<std::string, std::string>> TargetBuiltins;
+
+ for (const auto &Intrinsic : Ints) {
+ if (Intrinsic.MSBuiltinName.empty())
+ continue;
+
+ auto &Builtins = TargetBuiltins[Intrinsic.TargetPrefix];
+ if (!Builtins.insert(std::make_pair(Intrinsic.MSBuiltinName,
+ Intrinsic.EnumName)).second)
+ PrintFatalError("Intrinsic '" + Intrinsic.TheDef->getName() + "': "
+ "duplicate MS builtin name!");
+ }
+
+ OS << "// Get the LLVM intrinsic that corresponds to a MS builtin.\n"
+ "// This is used by the C front-end. The MS builtin name is passed\n"
+ "// in as a BuiltinName, and a target prefix (e.g. 'arm') is passed\n"
+ "// in as a TargetPrefix. The result is assigned to 'IntrinsicID'.\n"
+ "#ifdef GET_LLVM_INTRINSIC_FOR_MS_BUILTIN\n";
+
+ OS << (TargetOnly ? "static " + TargetPrefix : "") << "Intrinsic::ID "
+ << (TargetOnly ? "" : "Intrinsic::")
+ << "getIntrinsicForMSBuiltin(const char *TP, const char *BN) {\n";
+ OS << " StringRef BuiltinName(BN);\n"
+ " StringRef TargetPrefix(TP);\n"
+ "\n";
+
+ for (const auto &Builtins : TargetBuiltins) {
+ OS << " ";
+ if (Builtins.first.empty())
+ OS << "/* Target Independent Builtins */ ";
+ else
+ OS << "if (TargetPrefix == \"" << Builtins.first << "\") ";
+ OS << "{\n";
+ EmitTargetBuiltins(Builtins.second, TargetPrefix, OS);
+ OS << "}";
+ }
+
+ OS << " return ";
+ if (!TargetPrefix.empty())
+ OS << "(" << TargetPrefix << "Intrinsic::ID)";
+ OS << "Intrinsic::not_intrinsic;\n";
+ OS << "}\n";
+
+ OS << "#endif\n\n";
+}
+
void llvm::EmitIntrinsics(RecordKeeper &RK, raw_ostream &OS, bool TargetOnly) {
IntrinsicEmitter(RK, TargetOnly).run(OS);
}