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//===-- IA64TargetMachine.cpp - Define TargetMachine for IA64 -------------===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Duraid Madina and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the IA64 specific subclass of TargetMachine.
//
//===----------------------------------------------------------------------===//
#include "IA64TargetMachine.h"
#include "IA64.h"
#include "llvm/Module.h"
#include "llvm/PassManager.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Target/TargetMachineRegistry.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/ADT/Statistic.h"
#include <iostream>
using namespace llvm;
/// IA64TargetMachineModule - Note that this is used on hosts that cannot link
/// in a library unless there are references into the library. In particular,
/// it seems that it is not possible to get things to work on Win32 without
/// this. Though it is unused, do not remove it.
extern "C" int IA64TargetMachineModule;
int IA64TargetMachineModule = 0;
namespace {
cl::opt<bool> DisableOutput("disable-ia64-llc-output", cl::Hidden,
cl::desc("Disable the IA64 asm printer, for use "
"when profiling the code generator."));
cl::opt<bool> EnableDAGIsel("enable-ia64-dag-isel", cl::Hidden,
cl::desc("Enable the IA64 DAG->DAG isel"));
// Register the target.
RegisterTarget<IA64TargetMachine> X("ia64", " IA-64 (Itanium)");
}
unsigned IA64TargetMachine::compileTimeMatchQuality() {
#if defined(__ia64__) || defined(__IA64__)
return 50;
#else
return 0;
#endif
}
unsigned IA64TargetMachine::getModuleMatchQuality(const Module &M) {
// we match [iI][aA]*64
bool seenIA64=false;
std::string TT = M.getTargetTriple();
if (TT.size() >= 4) {
if( (TT[0]=='i' || TT[0]=='I') &&
(TT[1]=='a' || TT[1]=='A') ) {
for(unsigned int i=2; i<(TT.size()-1); i++)
if(TT[i]=='6' && TT[i+1]=='4')
seenIA64=true;
}
if(seenIA64)
return 50; // strong match
}
return compileTimeMatchQuality()/2;
}
/// IA64TargetMachine ctor - Create an LP64 architecture model
///
IA64TargetMachine::IA64TargetMachine(const Module &M, const std::string &FS)
: TargetMachine("IA64"), DataLayout(std::string("IA64"), std::string("e")),
FrameInfo(TargetFrameInfo::StackGrowsDown, 16, 0),
TLInfo(*this) { // FIXME? check this stuff
}
// addPassesToEmitFile - We currently use all of the same passes as the JIT
// does to emit statically compiled machine code.
bool IA64TargetMachine::addPassesToEmitFile(PassManager &PM,
std::ostream &Out,
CodeGenFileType FileType,
bool Fast) {
if (FileType != TargetMachine::AssemblyFile) return true;
// FIXME: Implement efficient support for garbage collection intrinsics.
PM.add(createLowerGCPass());
// FIXME: Implement the invoke/unwind instructions!
PM.add(createLowerInvokePass(704, 16)); // on ia64 linux, jmpbufs are 704
// bytes and must be 16byte aligned
// Make sure that no unreachable blocks are instruction selected.
PM.add(createUnreachableBlockEliminationPass());
// Add an instruction selector
// FIXME: reap this option one day: if(EnableDAGIsel)
PM.add(createIA64DAGToDAGInstructionSelector(*this));
/* XXX not yet. ;)
// Run optional SSA-based machine code optimizations next...
if (!NoSSAPeephole)
PM.add(createIA64SSAPeepholeOptimizerPass());
*/
// Print the instruction selected machine code...
if (PrintMachineCode)
PM.add(createMachineFunctionPrinterPass(&std::cerr));
// Perform register allocation to convert to a concrete IA64 representation
PM.add(createRegisterAllocator());
if (PrintMachineCode)
PM.add(createMachineFunctionPrinterPass(&std::cerr));
if (PrintMachineCode)
PM.add(createMachineFunctionPrinterPass(&std::cerr));
// Insert prolog/epilog code. Eliminate abstract frame index references...
PM.add(createPrologEpilogCodeInserter());
/* XXX no, not just yet */
// PM.add(createIA64PeepholeOptimizerPass());
// Make sure everything is bundled happily
PM.add(createIA64BundlingPass(*this));
if (PrintMachineCode) // Print the register-allocated code
PM.add(createIA64CodePrinterPass(std::cerr, *this));
if (!DisableOutput)
PM.add(createIA64CodePrinterPass(Out, *this));
// Delete machine code for this function
PM.add(createMachineCodeDeleter());
return false; // success!
}
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