fffbfe7c0c
WebAssemblyUtils depends on CodeGen which depends on all middle end optimization libraries. This component is used by WebAssembly's AsmParser, Disassembler, and MCTargetDesc libraries. Because of this, any MC layer tool built with WebAssembly support includes a larger portion of LLVM than it should. To fix this I've created an MC only version of WebAssemblyTypeUtilities.cpp in MCTargetDesc to be used by the MC components. This shrinks llvm-objdump and llvm-mc on my local release+asserts build by 5-6 MB. Reviewed By: MaskRay, aheejin Differential Revision: https://reviews.llvm.org/D144354
56 lines
2.0 KiB
C++
56 lines
2.0 KiB
C++
//===-- WebAssemblyMCAsmInfo.cpp - WebAssembly asm properties -------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// This file contains the declarations of the WebAssemblyMCAsmInfo
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/// properties.
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///
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//===----------------------------------------------------------------------===//
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#include "WebAssemblyMCAsmInfo.h"
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#include "WebAssemblyMCTargetDesc.h"
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#include "llvm/TargetParser/Triple.h"
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using namespace llvm;
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#define DEBUG_TYPE "wasm-mc-asm-info"
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WebAssemblyMCAsmInfo::~WebAssemblyMCAsmInfo() = default; // anchor.
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WebAssemblyMCAsmInfo::WebAssemblyMCAsmInfo(const Triple &T,
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const MCTargetOptions &Options) {
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CodePointerSize = CalleeSaveStackSlotSize = T.isArch64Bit() ? 8 : 4;
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// TODO: What should MaxInstLength be?
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UseDataRegionDirectives = true;
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// Use .skip instead of .zero because .zero is confusing when used with two
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// arguments (it doesn't actually zero things out).
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ZeroDirective = "\t.skip\t";
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Data8bitsDirective = "\t.int8\t";
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Data16bitsDirective = "\t.int16\t";
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Data32bitsDirective = "\t.int32\t";
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Data64bitsDirective = "\t.int64\t";
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AlignmentIsInBytes = false;
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COMMDirectiveAlignmentIsInBytes = false;
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LCOMMDirectiveAlignmentType = LCOMM::Log2Alignment;
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SupportsDebugInformation = true;
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// When compilation is done on a cpp file by clang, the exception model info
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// is stored in LangOptions, which is later used to set the info in
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// TargetOptions and then MCAsmInfo in LLVMTargetMachine::initAsmInfo(). But
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// this process does not happen when compiling bitcode directly with clang, so
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// we make sure this info is set correctly.
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if (WebAssembly::WasmEnableEH || WebAssembly::WasmEnableSjLj)
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ExceptionsType = ExceptionHandling::Wasm;
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}
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