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This adds a new subtarget feature called FPARMv8 (implied by NEON), and predicates the support of the FP instructions and registers on this feature. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193739 91177308-0d34-0410-b5e6-96231b3b80d8
59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
//===-- AArch64Subtarget.cpp - AArch64 Subtarget Information --------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the AArch64 specific subclass of TargetSubtargetInfo.
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//
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//===----------------------------------------------------------------------===//
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#include "AArch64Subtarget.h"
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#include "AArch64RegisterInfo.h"
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#include "MCTargetDesc/AArch64MCTargetDesc.h"
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#include "llvm/IR/GlobalValue.h"
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#include "llvm/Target/TargetSubtargetInfo.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/ADT/SmallVector.h"
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#define GET_SUBTARGETINFO_TARGET_DESC
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#define GET_SUBTARGETINFO_CTOR
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#include "AArch64GenSubtargetInfo.inc"
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using namespace llvm;
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AArch64Subtarget::AArch64Subtarget(StringRef TT, StringRef CPU, StringRef FS)
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: AArch64GenSubtargetInfo(TT, CPU, FS), HasFPARMv8(false), HasNEON(false),
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HasCrypto(false), TargetTriple(TT), CPUString(CPU) {
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initializeSubtargetFeatures(CPU, FS);
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}
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void AArch64Subtarget::initializeSubtargetFeatures(StringRef CPU,
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StringRef FS) {
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if (CPU.empty())
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CPUString = "generic";
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std::string FullFS = FS;
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if (CPUString == "generic") {
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// Enable FP by default.
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if (FullFS.empty())
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FullFS = "+fp-armv8";
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else
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FullFS = "+fp-armv8," + FullFS;
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}
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ParseSubtargetFeatures(CPU, FullFS);
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}
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bool AArch64Subtarget::GVIsIndirectSymbol(const GlobalValue *GV,
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Reloc::Model RelocM) const {
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if (RelocM == Reloc::Static)
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return false;
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return !GV->hasLocalLinkage() && !GV->hasHiddenVisibility();
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}
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