forked from OSchip/llvm-project
102 lines
3.3 KiB
C++
102 lines
3.3 KiB
C++
//===-- ARMTargetMachine.cpp - Define TargetMachine for ARM ---------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the "Instituto Nokia de Tecnologia" and
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// 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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//
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//===----------------------------------------------------------------------===//
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#include "ARMTargetMachine.h"
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#include "ARMTargetAsmInfo.h"
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#include "ARMFrameInfo.h"
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#include "ARM.h"
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#include "llvm/Module.h"
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#include "llvm/PassManager.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Target/TargetMachineRegistry.h"
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#include "llvm/Target/TargetOptions.h"
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using namespace llvm;
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static cl::opt<bool> DisableLdStOpti("disable-arm-loadstore-opti", cl::Hidden,
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cl::desc("Disable load store optimization pass"));
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namespace {
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// Register the target.
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RegisterTarget<ARMTargetMachine> X("arm", " ARM");
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RegisterTarget<ThumbTargetMachine> Y("thumb", " Thumb");
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}
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/// ThumbTargetMachine - Create an Thumb architecture model.
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///
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unsigned ThumbTargetMachine::getModuleMatchQuality(const Module &M) {
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std::string TT = M.getTargetTriple();
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if (TT.size() >= 6 && std::string(TT.begin(), TT.begin()+6) == "thumb-")
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return 20;
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return M.getPointerSize() == Module::Pointer32;
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}
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ThumbTargetMachine::ThumbTargetMachine(const Module &M, const std::string &FS)
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: ARMTargetMachine(M, FS, true) {
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}
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/// TargetMachine ctor - Create an ARM architecture model.
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///
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ARMTargetMachine::ARMTargetMachine(const Module &M, const std::string &FS,
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bool isThumb)
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: Subtarget(M, FS, isThumb),
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DataLayout(Subtarget.isAPCS_ABI() ?
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// APCS ABI
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(isThumb ?
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std::string("e-p:32:32-f64:32:32-i64:32:32-"
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"i16:16:32-i8:8:32-i1:8:32-a:0:32") :
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std::string("e-p:32:32-f64:32:32-i64:32:32")) :
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// AAPCS ABI
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(isThumb ?
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std::string("e-p:32:32-f64:64:64-i64:64:64-"
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"i16:16:32-i8:8:32-i1:8:32-a:0:32") :
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std::string("e-p:32:32-f64:64:64-i64:64:64"))),
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InstrInfo(Subtarget),
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FrameInfo(Subtarget) {}
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unsigned ARMTargetMachine::getModuleMatchQuality(const Module &M) {
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std::string TT = M.getTargetTriple();
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if (TT.size() >= 4 && std::string(TT.begin(), TT.begin()+4) == "arm-")
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return 20;
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return M.getPointerSize() == Module::Pointer32;
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}
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const TargetAsmInfo *ARMTargetMachine::createTargetAsmInfo() const {
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return new ARMTargetAsmInfo(*this);
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}
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// Pass Pipeline Configuration
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bool ARMTargetMachine::addInstSelector(FunctionPassManager &PM, bool Fast) {
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PM.add(createARMISelDag(*this));
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return false;
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}
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bool ARMTargetMachine::addPreEmitPass(FunctionPassManager &PM, bool Fast) {
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// FIXME: temporarily disabling load / store optimization pass for Thumb mode.
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if (!Fast && !DisableLdStOpti && !Subtarget.isThumb())
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PM.add(createARMLoadStoreOptimizationPass());
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PM.add(createARMConstantIslandPass());
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return true;
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}
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bool ARMTargetMachine::addAssemblyEmitter(FunctionPassManager &PM, bool Fast,
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std::ostream &Out) {
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// Output assembly language.
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PM.add(createARMCodePrinterPass(Out, *this));
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return false;
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}
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