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https://github.com/c64scene-ar/llvm-6502.git
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b95fc31aa2
and code model. This eliminates the need to pass OptLevel flag all over the place and makes it possible for any codegen pass to use this information. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144788 91177308-0d34-0410-b5e6-96231b3b80d8
124 lines
4.3 KiB
C++
124 lines
4.3 KiB
C++
//===-- MipsTargetMachine.cpp - Define TargetMachine for Mips -------------===//
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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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// Implements the info about Mips target spec.
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//
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//===----------------------------------------------------------------------===//
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#include "Mips.h"
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#include "MipsTargetMachine.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 LLVMInitializeMipsTarget() {
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// Register the target.
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RegisterTargetMachine<MipsebTargetMachine> X(TheMipsTarget);
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RegisterTargetMachine<MipselTargetMachine> Y(TheMipselTarget);
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RegisterTargetMachine<Mips64ebTargetMachine> A(TheMips64Target);
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RegisterTargetMachine<Mips64elTargetMachine> B(TheMips64elTarget);
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}
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// DataLayout --> Big-endian, 32-bit pointer/ABI/alignment
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// The stack is always 8 byte aligned
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// On function prologue, the stack is created by decrementing
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// its pointer. Once decremented, all references are done with positive
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// offset from the stack/frame pointer, using StackGrowsUp enables
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// an easier handling.
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// Using CodeModel::Large enables different CALL behavior.
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MipsTargetMachine::
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MipsTargetMachine(const Target &T, StringRef TT,
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StringRef CPU, StringRef FS,
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Reloc::Model RM, CodeModel::Model CM,
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CodeGenOpt::Level OL,
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bool isLittle):
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LLVMTargetMachine(T, TT, CPU, FS, RM, CM, OL),
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Subtarget(TT, CPU, FS, isLittle),
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DataLayout(isLittle ?
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(Subtarget.isABI_N64() ?
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"e-p:64:64:64-i8:8:32-i16:16:32-i64:64:64-f128:128:128-n32" :
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"e-p:32:32:32-i8:8:32-i16:16:32-i64:64:64-n32") :
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(Subtarget.isABI_N64() ?
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"E-p:64:64:64-i8:8:32-i16:16:32-i64:64:64-f128:128:128-n32" :
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"E-p:32:32:32-i8:8:32-i16:16:32-i64:64:64-n32")),
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InstrInfo(*this),
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FrameLowering(Subtarget),
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TLInfo(*this), TSInfo(*this), JITInfo() {
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}
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MipsebTargetMachine::
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MipsebTargetMachine(const Target &T, StringRef TT,
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StringRef CPU, StringRef FS,
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Reloc::Model RM, CodeModel::Model CM,
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CodeGenOpt::Level OL) :
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MipsTargetMachine(T, TT, CPU, FS, RM, CM, OL, false) {}
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MipselTargetMachine::
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MipselTargetMachine(const Target &T, StringRef TT,
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StringRef CPU, StringRef FS,
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Reloc::Model RM, CodeModel::Model CM,
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CodeGenOpt::Level OL) :
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MipsTargetMachine(T, TT, CPU, FS, RM, CM, OL, true) {}
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Mips64ebTargetMachine::
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Mips64ebTargetMachine(const Target &T, StringRef TT,
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StringRef CPU, StringRef FS,
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Reloc::Model RM, CodeModel::Model CM,
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CodeGenOpt::Level OL) :
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MipsTargetMachine(T, TT, CPU, FS, RM, CM, OL, false) {}
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Mips64elTargetMachine::
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Mips64elTargetMachine(const Target &T, StringRef TT,
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StringRef CPU, StringRef FS,
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Reloc::Model RM, CodeModel::Model CM,
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CodeGenOpt::Level OL) :
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MipsTargetMachine(T, TT, CPU, FS, RM, CM, OL, true) {}
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// Install an instruction selector pass using
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// the ISelDag to gen Mips code.
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bool MipsTargetMachine::
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addInstSelector(PassManagerBase &PM)
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{
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PM.add(createMipsISelDag(*this));
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return false;
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}
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// Implemented by targets that want to run passes immediately before
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// machine code is emitted. return true if -print-machineinstrs should
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// print out the code after the passes.
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bool MipsTargetMachine::
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addPreEmitPass(PassManagerBase &PM)
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{
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PM.add(createMipsDelaySlotFillerPass(*this));
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return true;
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}
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bool MipsTargetMachine::
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addPreRegAlloc(PassManagerBase &PM) {
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// Do not restore $gp if target is Mips64.
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// In N32/64, $gp is a callee-saved register.
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if (!Subtarget.hasMips64())
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PM.add(createMipsEmitGPRestorePass(*this));
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return true;
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}
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bool MipsTargetMachine::
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addPostRegAlloc(PassManagerBase &PM) {
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PM.add(createMipsExpandPseudoPass(*this));
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return true;
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}
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bool MipsTargetMachine::addCodeEmitter(PassManagerBase &PM,
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JITCodeEmitter &JCE) {
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// Machine code emitter pass for Mips.
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PM.add(createMipsJITCodeEmitterPass(*this, JCE));
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return false;
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}
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