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https://github.com/c64scene-ar/llvm-6502.git
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d04a8d4b33
Sooooo many of these had incorrect or strange main module includes. I have manually inspected all of these, and fixed the main module include to be the nearest plausible thing I could find. If you own or care about any of these source files, I encourage you to take some time and check that these edits were sensible. I can't have broken anything (I strictly added headers, and reordered them, never removed), but they may not be the headers you'd really like to identify as containing the API being implemented. Many forward declarations and missing includes were added to a header files to allow them to parse cleanly when included first. The main module rule does in fact have its merits. =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169131 91177308-0d34-0410-b5e6-96231b3b80d8
95 lines
3.5 KiB
C++
95 lines
3.5 KiB
C++
//===-- HexagonTargetObjectFile.cpp - Hexagon asm properties --------------===//
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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 contains the declarations of the HexagonTargetAsmInfo properties.
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//
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//===----------------------------------------------------------------------===//
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#include "HexagonTargetObjectFile.h"
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#include "HexagonSubtarget.h"
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#include "HexagonTargetMachine.h"
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#include "llvm/DataLayout.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/Function.h"
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#include "llvm/GlobalVariable.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/ELF.h"
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using namespace llvm;
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static cl::opt<int> SmallDataThreshold("hexagon-small-data-threshold",
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cl::init(8), cl::Hidden);
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void HexagonTargetObjectFile::Initialize(MCContext &Ctx,
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const TargetMachine &TM) {
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TargetLoweringObjectFileELF::Initialize(Ctx, TM);
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SmallDataSection =
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getContext().getELFSection(".sdata", ELF::SHT_PROGBITS,
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ELF::SHF_WRITE | ELF::SHF_ALLOC,
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SectionKind::getDataRel());
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SmallBSSSection =
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getContext().getELFSection(".sbss", ELF::SHT_NOBITS,
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ELF::SHF_WRITE | ELF::SHF_ALLOC,
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SectionKind::getBSS());
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}
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// sdata/sbss support taken largely from the MIPS Backend.
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static bool IsInSmallSection(uint64_t Size) {
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return Size > 0 && Size <= (uint64_t)SmallDataThreshold;
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}
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/// IsGlobalInSmallSection - Return true if this global value should be
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/// placed into small data/bss section.
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bool HexagonTargetObjectFile::IsGlobalInSmallSection(const GlobalValue *GV,
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const TargetMachine &TM) const {
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// If the primary definition of this global value is outside the current
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// translation unit or the global value is available for inspection but not
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// emission, then do nothing.
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if (GV->isDeclaration() || GV->hasAvailableExternallyLinkage())
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return false;
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// Otherwise, Check if GV should be in sdata/sbss, when normally it would end
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// up in getKindForGlobal(GV, TM).
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return IsGlobalInSmallSection(GV, TM, getKindForGlobal(GV, TM));
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}
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/// IsGlobalInSmallSection - Return true if this global value should be
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/// placed into small data/bss section.
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bool HexagonTargetObjectFile::
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IsGlobalInSmallSection(const GlobalValue *GV, const TargetMachine &TM,
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SectionKind Kind) const {
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// Only global variables, not functions.
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const GlobalVariable *GVA = dyn_cast<GlobalVariable>(GV);
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if (!GVA)
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return false;
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if (Kind.isBSS() || Kind.isDataNoRel() || Kind.isCommon()) {
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Type *Ty = GV->getType()->getElementType();
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return IsInSmallSection(TM.getDataLayout()->getTypeAllocSize(Ty));
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}
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return false;
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}
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const MCSection *HexagonTargetObjectFile::
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SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
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Mangler *Mang, const TargetMachine &TM) const {
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// Handle Small Section classification here.
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if (Kind.isBSS() && IsGlobalInSmallSection(GV, TM, Kind))
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return SmallBSSSection;
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if (Kind.isDataNoRel() && IsGlobalInSmallSection(GV, TM, Kind))
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return SmallDataSection;
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// Otherwise, we work the same as ELF.
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return TargetLoweringObjectFileELF::SelectSectionForGlobal(GV, Kind, Mang,TM);
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}
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