89b57061f7
This moves the registry higher in the LLVM library dependency stack. Every client of the target registry needs to link against MC anyway to actually use the target, so we might as well move this out of Support. This allows us to ensure that Support doesn't have includes from MC/*. Differential Revision: https://reviews.llvm.org/D111454
62 lines
2.2 KiB
C++
62 lines
2.2 KiB
C++
//===-- WebAssemblySubtarget.cpp - WebAssembly Subtarget Information ------===//
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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 implements the WebAssembly-specific subclass of
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/// TargetSubtarget.
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///
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//===----------------------------------------------------------------------===//
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#include "WebAssemblySubtarget.h"
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#include "MCTargetDesc/WebAssemblyMCTargetDesc.h"
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#include "WebAssemblyInstrInfo.h"
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#include "llvm/MC/TargetRegistry.h"
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using namespace llvm;
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#define DEBUG_TYPE "wasm-subtarget"
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#define GET_SUBTARGETINFO_CTOR
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#define GET_SUBTARGETINFO_TARGET_DESC
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#include "WebAssemblyGenSubtargetInfo.inc"
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WebAssemblySubtarget &
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WebAssemblySubtarget::initializeSubtargetDependencies(StringRef CPU,
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StringRef FS) {
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// Determine default and user-specified characteristics
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LLVM_DEBUG(llvm::dbgs() << "initializeSubtargetDependencies\n");
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if (CPU.empty())
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CPU = "generic";
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ParseSubtargetFeatures(CPU, /*TuneCPU*/ CPU, FS);
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return *this;
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}
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WebAssemblySubtarget::WebAssemblySubtarget(const Triple &TT,
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const std::string &CPU,
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const std::string &FS,
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const TargetMachine &TM)
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: WebAssemblyGenSubtargetInfo(TT, CPU, /*TuneCPU*/ CPU, FS),
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TargetTriple(TT), FrameLowering(),
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InstrInfo(initializeSubtargetDependencies(CPU, FS)), TSInfo(),
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TLInfo(TM, *this) {}
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bool WebAssemblySubtarget::enableAtomicExpand() const {
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// If atomics are disabled, atomic ops are lowered instead of expanded
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return hasAtomics();
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}
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bool WebAssemblySubtarget::enableMachineScheduler() const {
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// Disable the MachineScheduler for now. Even with ShouldTrackPressure set and
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// enableMachineSchedDefaultSched overridden, it appears to have an overall
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// negative effect for the kinds of register optimizations we're doing.
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return false;
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}
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bool WebAssemblySubtarget::useAA() const { return true; }
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