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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
55 lines
1.9 KiB
C++
55 lines
1.9 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/Support/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 FS) {
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// Determine default and user-specified characteristics
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if (CPUString.empty())
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CPUString = "generic";
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ParseSubtargetFeatures(CPUString, 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, FS), CPUString(CPU),
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TargetTriple(TT), FrameLowering(),
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InstrInfo(initializeSubtargetDependencies(FS)), TSInfo(),
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TLInfo(TM, *this) {}
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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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