mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 20:23:11 +01:00
110 lines
3.3 KiB
C++
110 lines
3.3 KiB
C++
//===- PowerPCSubtarget.cpp - PPC Subtarget Information -------------------===//
|
|
//
|
|
// 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 "PPCSubtarget.h"
|
|
#include "PPC.h"
|
|
#include "llvm/Module.h"
|
|
#include "PPCGenSubtarget.inc"
|
|
#include <iostream>
|
|
using namespace llvm;
|
|
|
|
#if defined(__APPLE__)
|
|
#include <mach/mach.h>
|
|
#include <mach/mach_host.h>
|
|
#include <mach/host_info.h>
|
|
#include <mach/machine.h>
|
|
|
|
/// GetCurrentPowerPCFeatures - Returns the current CPUs features.
|
|
static const char *GetCurrentPowerPCCPU() {
|
|
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);
|
|
|
|
if (hostInfo.cpu_type != CPU_TYPE_POWERPC) return "generic";
|
|
|
|
switch(hostInfo.cpu_subtype) {
|
|
case CPU_SUBTYPE_POWERPC_601: return "601";
|
|
case CPU_SUBTYPE_POWERPC_602: return "602";
|
|
case CPU_SUBTYPE_POWERPC_603: return "603";
|
|
case CPU_SUBTYPE_POWERPC_603e: return "603e";
|
|
case CPU_SUBTYPE_POWERPC_603ev: return "603ev";
|
|
case CPU_SUBTYPE_POWERPC_604: return "604";
|
|
case CPU_SUBTYPE_POWERPC_604e: return "604e";
|
|
case CPU_SUBTYPE_POWERPC_620: return "620";
|
|
case CPU_SUBTYPE_POWERPC_750: return "750";
|
|
case CPU_SUBTYPE_POWERPC_7400: return "7400";
|
|
case CPU_SUBTYPE_POWERPC_7450: return "7450";
|
|
case CPU_SUBTYPE_POWERPC_970: return "970";
|
|
default: ;
|
|
}
|
|
|
|
return "generic";
|
|
}
|
|
#endif
|
|
|
|
|
|
PPCSubtarget::PPCSubtarget(const Module &M, const std::string &FS, bool is64Bit)
|
|
: StackAlignment(16)
|
|
, InstrItins()
|
|
, IsGigaProcessor(false)
|
|
, Has64BitSupport(false)
|
|
, Use64BitRegs(false)
|
|
, IsPPC64(is64Bit)
|
|
, HasAltivec(false)
|
|
, HasFSQRT(false)
|
|
, HasSTFIWX(false)
|
|
, IsDarwin(false) {
|
|
|
|
// Determine default and user specified characteristics
|
|
std::string CPU = "generic";
|
|
#if defined(__APPLE__)
|
|
CPU = GetCurrentPowerPCCPU();
|
|
#endif
|
|
|
|
// Parse features string.
|
|
ParseSubtargetFeatures(FS, CPU);
|
|
|
|
// If we are generating code for ppc64, verify that options make sense.
|
|
if (is64Bit) {
|
|
if (!has64BitSupport()) {
|
|
std::cerr << "PPC: Generation of 64-bit code for a 32-bit processor "
|
|
"requested. Ignoring 32-bit processor feature.\n";
|
|
Has64BitSupport = true;
|
|
}
|
|
// Silently force 64-bit register use on ppc64.
|
|
Use64BitRegs = true;
|
|
}
|
|
|
|
// If the user requested use of 64-bit regs, but the cpu selected doesn't
|
|
// support it, warn and ignore.
|
|
if (use64BitRegs() && !has64BitSupport()) {
|
|
std::cerr << "PPC: 64-bit registers requested on CPU without support. "
|
|
"Disabling 64-bit register use.\n";
|
|
Use64BitRegs = 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;
|
|
} else if (TT.empty()) {
|
|
#if defined(__APPLE__)
|
|
IsDarwin = true;
|
|
#endif
|
|
}
|
|
}
|