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04bcc11905
derived classes. Since global data alignment, layout, and mangling is often based on the DataLayout, move it to the TargetMachine. This ensures that global data is going to be layed out and mangled consistently if the subtarget changes on a per function basis. Prior to this all targets(*) have had subtarget dependent code moved out and onto the TargetMachine. *One target hasn't been migrated as part of this change: R600. The R600 port has, as a subtarget feature, the size of pointers and this affects global data layout. I've currently hacked in a FIXME to enable progress, but the port needs to be updated to either pass the 64-bitness to the TargetMachine, or fix the DataLayout to avoid subtarget dependent features. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227113 91177308-0d34-0410-b5e6-96231b3b80d8
72 lines
2.4 KiB
C++
72 lines
2.4 KiB
C++
//===-- MSP430TargetMachine.cpp - Define TargetMachine for MSP430 ---------===//
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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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// Top-level implementation for the MSP430 target.
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//
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//===----------------------------------------------------------------------===//
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#include "MSP430TargetMachine.h"
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#include "MSP430.h"
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#include "llvm/CodeGen/Passes.h"
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#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/PassManager.h"
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#include "llvm/Support/TargetRegistry.h"
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using namespace llvm;
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extern "C" void LLVMInitializeMSP430Target() {
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// Register the target.
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RegisterTargetMachine<MSP430TargetMachine> X(TheMSP430Target);
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}
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MSP430TargetMachine::MSP430TargetMachine(const Target &T, StringRef TT,
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StringRef CPU, StringRef FS,
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const TargetOptions &Options,
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Reloc::Model RM, CodeModel::Model CM,
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CodeGenOpt::Level OL)
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: LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
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TLOF(make_unique<TargetLoweringObjectFileELF>()),
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// FIXME: Check DataLayout string.
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DL("e-m:e-p:16:16-i32:16:32-a:16-n8:16"), Subtarget(TT, CPU, FS, *this) {
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initAsmInfo();
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}
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MSP430TargetMachine::~MSP430TargetMachine() {}
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namespace {
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/// MSP430 Code Generator Pass Configuration Options.
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class MSP430PassConfig : public TargetPassConfig {
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public:
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MSP430PassConfig(MSP430TargetMachine *TM, PassManagerBase &PM)
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: TargetPassConfig(TM, PM) {}
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MSP430TargetMachine &getMSP430TargetMachine() const {
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return getTM<MSP430TargetMachine>();
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}
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bool addInstSelector() override;
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void addPreEmitPass() override;
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};
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} // namespace
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TargetPassConfig *MSP430TargetMachine::createPassConfig(PassManagerBase &PM) {
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return new MSP430PassConfig(this, PM);
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}
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bool MSP430PassConfig::addInstSelector() {
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// Install an instruction selector.
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addPass(createMSP430ISelDag(getMSP430TargetMachine(), getOptLevel()));
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return false;
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}
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void MSP430PassConfig::addPreEmitPass() {
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// Must run branch selection immediately preceding the asm printer.
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addPass(createMSP430BranchSelectionPass(), false);
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}
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