mirror of
https://github.com/c64scene-ar/llvm-6502.git
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59ee62d241
and MCSubtargetInfo. - Added methods to update subtarget features (used when targets automatically detect subtarget features or switch modes). - Teach X86Subtarget to update MCSubtargetInfo features bits since the MCSubtargetInfo layer can be shared with other modules. - These fixes .code 16 / .code 32 support since mode switch is updated in MCSubtargetInfo so MC code emitter can do the right thing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134884 91177308-0d34-0410-b5e6-96231b3b80d8
69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
//===- SystemZSubtarget.cpp - SystemZ Subtarget Information -------*- C++ -*-=//
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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 SystemZ specific subclass of TargetSubtargetInfo.
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//
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//===----------------------------------------------------------------------===//
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#include "SystemZSubtarget.h"
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#include "SystemZ.h"
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#include "llvm/GlobalValue.h"
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#include "llvm/Target/TargetMachine.h"
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#include "llvm/Target/TargetRegistry.h"
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#define GET_SUBTARGETINFO_ENUM
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#define GET_SUBTARGETINFO_MC_DESC
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#define GET_SUBTARGETINFO_TARGET_DESC
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#define GET_SUBTARGETINFO_CTOR
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#include "SystemZGenSubtargetInfo.inc"
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using namespace llvm;
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SystemZSubtarget::SystemZSubtarget(const std::string &TT,
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const std::string &CPU,
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const std::string &FS):
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SystemZGenSubtargetInfo(TT, CPU, FS), HasZ10Insts(false) {
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std::string CPUName = CPU;
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if (CPUName.empty())
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CPUName = "z9";
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// Parse features string.
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ParseSubtargetFeatures(CPUName, FS);
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}
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/// True if accessing the GV requires an extra load.
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bool SystemZSubtarget::GVRequiresExtraLoad(const GlobalValue* GV,
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const TargetMachine& TM,
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bool isDirectCall) const {
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if (TM.getRelocationModel() == Reloc::PIC_) {
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// Extra load is needed for all externally visible.
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if (isDirectCall)
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return false;
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if (GV->hasLocalLinkage() || GV->hasHiddenVisibility())
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return false;
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return true;
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}
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return false;
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}
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MCSubtargetInfo *createSystemZMCSubtargetInfo(StringRef TT, StringRef CPU,
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StringRef FS) {
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MCSubtargetInfo *X = new MCSubtargetInfo();
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InitSystemZMCSubtargetInfo(X, TT, CPU, FS);
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return X;
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}
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extern "C" void LLVMInitializeSystemZMCSubtargetInfo() {
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TargetRegistry::RegisterMCSubtargetInfo(TheSystemZTarget,
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createSystemZMCSubtargetInfo);
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}
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