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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4368 91177308-0d34-0410-b5e6-96231b3b80d8
59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
//===-- TargetMachine.cpp - General Target Information ---------------------==//
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//
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// This file describes the general parts of a Target machine.
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// This file also implements MachineCacheInfo.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Target/TargetMachine.h"
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#include "llvm/Target/MachineCacheInfo.h"
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#include "llvm/Type.h"
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//---------------------------------------------------------------------------
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// class TargetMachine
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//
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// Purpose:
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// Machine description.
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//
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//---------------------------------------------------------------------------
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// function TargetMachine::findOptimalStorageSize
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//
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// Purpose:
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// This default implementation assumes that all sub-word data items use
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// space equal to optSizeForSubWordData, and all other primitive data
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// items use space according to the type.
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//
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unsigned int
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TargetMachine::findOptimalStorageSize(const Type* ty) const
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{
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switch(ty->getPrimitiveID())
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{
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case Type::BoolTyID:
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case Type::UByteTyID:
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case Type::SByteTyID:
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case Type::UShortTyID:
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case Type::ShortTyID:
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return optSizeForSubWordData;
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default:
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return DataLayout.getTypeSize(ty);
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}
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}
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//---------------------------------------------------------------------------
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// class MachineCacheInfo
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//
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// Purpose:
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// Describes properties of the target cache architecture.
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//---------------------------------------------------------------------------
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void MachineCacheInfo::Initialize() {
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numLevels = 2;
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cacheLineSizes.push_back(16); cacheLineSizes.push_back(32);
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cacheSizes.push_back(1 << 15); cacheSizes.push_back(1 << 20);
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cacheAssoc.push_back(1); cacheAssoc.push_back(4);
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}
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