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//===- Pass.cpp - MLIR pass registration generator ------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// PassCAPIGen uses the description of passes to generate C API for the passes.
//
//===----------------------------------------------------------------------===//
#include "mlir/TableGen/GenInfo.h"
#include "mlir/TableGen/Pass.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FormatVariadic.h"
#include "llvm/TableGen/Error.h"
#include "llvm/TableGen/Record.h"
using namespace mlir;
using namespace mlir::tblgen;
static llvm::cl::OptionCategory
passGenCat("Options for -gen-pass-capi-header and -gen-pass-capi-impl");
static llvm::cl::opt<std::string>
groupName("prefix",
llvm::cl::desc("The prefix to use for this group of passes. The "
"form will be mlirCreate<prefix><passname>, the "
"prefix can avoid conflicts across libraries."),
llvm::cl::cat(passGenCat));
const char *const passDecl = R"(
/* Create {0} Pass. */
MLIR_CAPI_EXPORTED MlirPass mlirCreate{0}{1}(void);
MLIR_CAPI_EXPORTED void mlirRegister{0}{1}(void);
)";
const char *const fileHeader = R"(
/* Autogenerated by mlir-tblgen; don't manually edit. */
#include "mlir-c/Pass.h"
#ifdef __cplusplus
extern "C" {
#endif
)";
const char *const fileFooter = R"(
#ifdef __cplusplus
}
#endif
)";
/// Emit TODO
static bool emitCAPIHeader(const llvm::RecordKeeper &records, raw_ostream &os) {
os << fileHeader;
os << "// Registration for the entire group\n";
os << "MLIR_CAPI_EXPORTED void mlirRegister" << groupName
<< "Passes(void);\n\n";
for (const auto *def : records.getAllDerivedDefinitions("PassBase")) {
Pass pass(def);
StringRef defName = pass.getDef()->getName();
os << llvm::formatv(passDecl, groupName, defName);
}
os << fileFooter;
return false;
}
const char *const passCreateDef = R"(
MlirPass mlirCreate{0}{1}(void) {
return wrap({2}.release());
}
void mlirRegister{0}{1}(void) {
register{1}();
}
)";
/// {0}: The name of the pass group.
const char *const passGroupRegistrationCode = R"(
//===----------------------------------------------------------------------===//
// {0} Group Registration
//===----------------------------------------------------------------------===//
void mlirRegister{0}Passes(void) {{
register{0}Passes();
}
)";
static bool emitCAPIImpl(const llvm::RecordKeeper &records, raw_ostream &os) {
os << "/* Autogenerated by mlir-tblgen; don't manually edit. */";
os << llvm::formatv(passGroupRegistrationCode, groupName);
for (const auto *def : records.getAllDerivedDefinitions("PassBase")) {
Pass pass(def);
StringRef defName = pass.getDef()->getName();
std::string constructorCall;
if (StringRef constructor = pass.getConstructor(); !constructor.empty())
constructorCall = constructor.str();
else
constructorCall =
llvm::formatv("create{0}()", pass.getDef()->getName()).str();
os << llvm::formatv(passCreateDef, groupName, defName, constructorCall);
}
return false;
}
static mlir::GenRegistration genCAPIHeader("gen-pass-capi-header",
"Generate pass C API header",
&emitCAPIHeader);
static mlir::GenRegistration genCAPIImpl("gen-pass-capi-impl",
"Generate pass C API implementation",
&emitCAPIImpl);
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