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//===- PowerPCSubtarget.cpp - PPC Subtarget Information ---------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Nate Begeman and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the PPC specific subclass of TargetSubtarget.
//
//===----------------------------------------------------------------------===//
#include "PowerPCSubtarget.h"
#include "PowerPC.h"
#include "llvm/Module.h"
#include "llvm/Support/CommandLine.h"
using namespace llvm;
PPCTargetEnum llvm::PPCTarget = TargetDefault;
namespace llvm {
cl::opt<PPCTargetEnum, true>
PPCTargetArg(cl::desc("Force generation of code for a specific PPC target:"),
cl::values(
clEnumValN(TargetAIX, "aix", " Enable AIX codegen"),
clEnumValN(TargetDarwin,"darwin"," Enable Darwin codegen"),
clEnumValEnd),
cl::location(PPCTarget), cl::init(TargetDefault));
cl::opt<bool> EnableGPOPT("enable-gpopt", cl::Hidden,
cl::desc("Enable optimizations for GP cpus"));
}
#if defined(__APPLE__)
#include <mach/mach.h>
#include <mach/mach_host.h>
#include <mach/host_info.h>
#include <mach/machine.h>
static boolean_t IsGP() {
host_basic_info_data_t hostInfo;
mach_msg_type_number_t infoCount;
infoCount = HOST_BASIC_INFO_COUNT;
host_info(mach_host_self(), HOST_BASIC_INFO, (host_info_t)&hostInfo,
&infoCount);
return ((hostInfo.cpu_type == CPU_TYPE_POWERPC) &&
(hostInfo.cpu_subtype == CPU_SUBTYPE_POWERPC_970));
}
#endif
PPCSubtarget::PPCSubtarget(const Module &M)
: StackAlignment(16), IsGigaProcessor(false), IsAIX(false), IsDarwin(false) {
// Set the boolean corresponding to the current target triple, or the default
// if one cannot be determined, to true.
const std::string& TT = M.getTargetTriple();
if (TT.length() > 5) {
IsDarwin = TT.find("darwin") != std::string::npos;
#if defined(__APPLE__)
IsGigaProcessor = IsGP();
#endif
} else if (TT.empty()) {
#if defined(_POWER)
IsAIX = true;
#elif defined(__APPLE__)
IsDarwin = true;
IsGigaProcessor = IsGP();
#endif
}
// If GP opts are forced on by the commandline, do so now.
if (EnableGPOPT) IsGigaProcessor = true;
}
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