| //===-- SystemZSubtarget.cpp - SystemZ subtarget information --------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "SystemZSubtarget.h" |
| #include "MCTargetDesc/SystemZMCTargetDesc.h" |
| #include "llvm/IR/GlobalValue.h" |
| |
| using namespace llvm; |
| |
| #define DEBUG_TYPE "systemz-subtarget" |
| |
| #define GET_SUBTARGETINFO_TARGET_DESC |
| #define GET_SUBTARGETINFO_CTOR |
| #include "SystemZGenSubtargetInfo.inc" |
| |
| // Pin the vtable to this file. |
| void SystemZSubtarget::anchor() {} |
| |
| SystemZSubtarget & |
| SystemZSubtarget::initializeSubtargetDependencies(StringRef CPU, StringRef FS) { |
| std::string CPUName = CPU; |
| if (CPUName.empty()) |
| CPUName = "generic"; |
| // Parse features string. |
| ParseSubtargetFeatures(CPUName, FS); |
| return *this; |
| } |
| |
| SystemZSubtarget::SystemZSubtarget(const Triple &TT, const std::string &CPU, |
| const std::string &FS, |
| const TargetMachine &TM) |
| : SystemZGenSubtargetInfo(TT, CPU, FS), HasDistinctOps(false), |
| HasLoadStoreOnCond(false), HasHighWord(false), HasFPExtension(false), |
| HasPopulationCount(false), HasFastSerialization(false), |
| HasInterlockedAccess1(false), HasMiscellaneousExtensions(false), |
| HasTransactionalExecution(false), HasProcessorAssist(false), |
| HasVector(false), HasLoadStoreOnCond2(false), TargetTriple(TT), |
| InstrInfo(initializeSubtargetDependencies(CPU, FS)), TLInfo(TM, *this), |
| TSInfo(), FrameLowering() {} |
| |
| bool SystemZSubtarget::isPC32DBLSymbol(const GlobalValue *GV, |
| CodeModel::Model CM) const { |
| // PC32DBL accesses require the low bit to be clear. Note that a zero |
| // value selects the default alignment and is therefore OK. |
| if (GV->getAlignment() == 1) |
| return false; |
| |
| // For the small model, all locally-binding symbols are in range. |
| if (CM == CodeModel::Small) |
| return TLInfo.getTargetMachine().shouldAssumeDSOLocal(*GV->getParent(), GV); |
| |
| // For Medium and above, assume that the symbol is not within the 4GB range. |
| // Taking the address of locally-defined text would be OK, but that |
| // case isn't easy to detect. |
| return false; |
| } |