caio/clang-p2996
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[ORC-RT] Replace FnTag arg of WrapperFunction::call with generic dispatch arg.

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This decouples function argument serialization / deserialization from the
function call dispatch mechanism. This will eventually allow us to replace the
existing __orc_rt_jit_dispatch function with a system that supports pre-linking
parts of the ORC runtime into the executor.
This commit is contained in:
Lang Hames
2024-09-10 14:53:49 +10:00
parent 3928edecfb
commit 462251b80b
5 changed files with 75 additions and 31 deletions
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14
compiler-rt/lib/orc/coff_platform.cpp
View File

@@ -17,6 +17,7 @@
#include "debug.h"
#include "error.h"
#include "jit_dispatch.h"
#include "wrapper_function_utils.h"
#include <array>
@@ -315,9 +316,9 @@ Error COFFPlatformRuntimeState::dlopenFull(JITDylibState &JDS) {
// Call back to the JIT to push the initializers.
Expected<COFFJITDylibDepInfoMap> DepInfoMap((COFFJITDylibDepInfoMap()));
if (auto Err = WrapperFunction<SPSExpected<SPSCOFFJITDylibDepInfoMap>(
SPSExecutorAddr)>::call(&__orc_rt_coff_push_initializers_tag,
DepInfoMap,
ExecutorAddr::fromPtr(JDS.Header)))
SPSExecutorAddr)>::
call(JITDispatch(&__orc_rt_coff_push_initializers_tag), DepInfoMap,
ExecutorAddr::fromPtr(JDS.Header)))
return Err;
if (!DepInfoMap)
return DepInfoMap.takeError();
@@ -445,10 +446,9 @@ COFFPlatformRuntimeState::lookupSymbolInJITDylib(void *header,
std::string_view Sym) {
Expected<ExecutorAddr> Result((ExecutorAddr()));
if (auto Err = WrapperFunction<SPSExpected<SPSExecutorAddr>(
SPSExecutorAddr, SPSString)>::call(&__orc_rt_coff_symbol_lookup_tag,
Result,
ExecutorAddr::fromPtr(header),
Sym))
SPSExecutorAddr,
SPSString)>::call(JITDispatch(&__orc_rt_coff_symbol_lookup_tag),
Result, ExecutorAddr::fromPtr(header), Sym))
return std::move(Err);
return Result;
}

13
compiler-rt/lib/orc/elfnix_platform.cpp
View File

@@ -14,6 +14,7 @@
#include "common.h"
#include "compiler.h"
#include "error.h"
#include "jit_dispatch.h"
#include "wrapper_function_utils.h"
#include <algorithm>
@@ -352,10 +353,9 @@ ELFNixPlatformRuntimeState::lookupSymbolInJITDylib(void *DSOHandle,
std::string_view Sym) {
Expected<ExecutorAddr> Result((ExecutorAddr()));
if (auto Err = WrapperFunction<SPSExpected<SPSExecutorAddr>(
SPSExecutorAddr, SPSString)>::call(&__orc_rt_elfnix_symbol_lookup_tag,
Result,
ExecutorAddr::fromPtr(DSOHandle),
Sym))
SPSExecutorAddr,
SPSString)>::call(JITDispatch(&__orc_rt_elfnix_symbol_lookup_tag),
Result, ExecutorAddr::fromPtr(DSOHandle), Sym))
return std::move(Err);
return Result;
}
@@ -368,8 +368,9 @@ ELFNixPlatformRuntimeState::getJITDylibInitializersByName(
std::string PathStr(Path.data(), Path.size());
if (auto Err =
WrapperFunction<SPSExpected<SPSELFNixJITDylibInitializerSequence>(
SPSString)>::call(&__orc_rt_elfnix_get_initializers_tag, Result,
Path))
SPSString)>::
call(JITDispatch(&__orc_rt_elfnix_get_initializers_tag, Result),
Path))
return std::move(Err);
return Result;
}

50
compiler-rt/lib/orc/jit_dispatch.h Normal file
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@@ -0,0 +1,50 @@
//===------ jit_dispatch.h - Call back to an ORC controller -----*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file is a part of the ORC runtime support library.
//
//===----------------------------------------------------------------------===//
#ifndef ORC_RT_JIT_DISPATCH_H
#define ORC_RT_JIT_DISPATCH_H
#include "common.h"
#include "wrapper_function_utils.h"
namespace orc_rt {
class JITDispatch {
public:
JITDispatch(const void *FnTag) : FnTag(FnTag) {}
WrapperFunctionResult operator()(const char *ArgData, size_t ArgSize) {
// Since the functions cannot be zero/unresolved on Windows, the following
// reference taking would always be non-zero, thus generating a compiler
// warning otherwise.
#if !defined(_WIN32)
if (ORC_RT_UNLIKELY(!&__orc_rt_jit_dispatch_ctx))
return WrapperFunctionResult::createOutOfBandError(
"__orc_rt_jit_dispatch_ctx not set")
.release();
if (ORC_RT_UNLIKELY(!&__orc_rt_jit_dispatch))
return WrapperFunctionResult::createOutOfBandError(
"__orc_rt_jit_dispatch not set")
.release();
#endif
return __orc_rt_jit_dispatch(&__orc_rt_jit_dispatch_ctx, FnTag, ArgData,
ArgSize);
}
private:
const void *FnTag;
};
} // namespace orc_rt
#endif // ORC_RT_JIT_DISPATCH_H

8
compiler-rt/lib/orc/macho_platform.cpp
View File

@@ -16,6 +16,7 @@
#include "debug.h"
#include "error.h"
#include "interval_map.h"
#include "jit_dispatch.h"
#include "wrapper_function_utils.h"
#include <algorithm>
@@ -915,7 +916,7 @@ Error MachOPlatformRuntimeState::requestPushSymbols(
Error OpErr = Error::success();
if (auto Err = WrapperFunction<SPSError(
SPSExecutorAddr, SPSSequence<SPSTuple<SPSString, bool>>)>::
call(&__orc_rt_macho_push_symbols_tag, OpErr,
call(JITDispatch(&__orc_rt_macho_push_symbols_tag), OpErr,
ExecutorAddr::fromPtr(JDS.Header), Symbols)) {
cantFail(std::move(OpErr));
return std::move(Err);
@@ -1145,8 +1146,9 @@ Error MachOPlatformRuntimeState::dlopenFull(
// Unlock so that we can accept the initializer update.
JDStatesLock.unlock();
if (auto Err = WrapperFunction<SPSExpected<SPSMachOJITDylibDepInfoMap>(
SPSExecutorAddr)>::call(&__orc_rt_macho_push_initializers_tag,
DepInfo, ExecutorAddr::fromPtr(JDS.Header)))
SPSExecutorAddr)>::
call(JITDispatch(&__orc_rt_macho_push_initializers_tag), DepInfo,
ExecutorAddr::fromPtr(JDS.Header)))
return Err;
JDStatesLock.lock();

21
compiler-rt/lib/orc/wrapper_function_utils.h
View File

@@ -13,10 +13,9 @@
#ifndef ORC_RT_WRAPPER_FUNCTION_UTILS_H
#define ORC_RT_WRAPPER_FUNCTION_UTILS_H
#include "orc_rt/c_api.h"
#include "common.h"
#include "error.h"
#include "executor_address.h"
#include "orc_rt/c_api.h"
#include "simple_packed_serialization.h"
#include <type_traits>
@@ -288,30 +287,22 @@ private:
using ResultSerializer = detail::ResultSerializer<SPSRetTagT, RetT>;
public:
template <typename RetT, typename... ArgTs>
static Error call(const void *FnTag, RetT &Result, const ArgTs &...Args) {
template <typename DispatchFn, typename RetT, typename... ArgTs>
static Error call(DispatchFn &&Dispatch, RetT &Result, const ArgTs &...Args) {
// RetT might be an Error or Expected value. Set the checked flag now:
// we don't want the user to have to check the unused result if this
// operation fails.
detail::ResultDeserializer<SPSRetTagT, RetT>::makeSafe(Result);
// Since the functions cannot be zero/unresolved on Windows, the following
// reference taking would always be non-zero, thus generating a compiler
// warning otherwise.
#if !defined(_WIN32)
if (ORC_RT_UNLIKELY(!&__orc_rt_jit_dispatch_ctx))
return make_error<StringError>("__orc_rt_jit_dispatch_ctx not set");
if (ORC_RT_UNLIKELY(!&__orc_rt_jit_dispatch))
return make_error<StringError>("__orc_rt_jit_dispatch not set");
#endif
auto ArgBuffer =
WrapperFunctionResult::fromSPSArgs<SPSArgList<SPSTagTs...>>(Args...);
if (const char *ErrMsg = ArgBuffer.getOutOfBandError())
return make_error<StringError>(ErrMsg);
WrapperFunctionResult ResultBuffer = __orc_rt_jit_dispatch(
&__orc_rt_jit_dispatch_ctx, FnTag, ArgBuffer.data(), ArgBuffer.size());
WrapperFunctionResult ResultBuffer =
Dispatch(ArgBuffer.data(), ArgBuffer.size());
if (auto ErrMsg = ResultBuffer.getOutOfBandError())
return make_error<StringError>(ErrMsg);