-//===- MipsSubtarget.cpp - Mips Subtarget Information -----------*- C++ -*-===//
+//===-- MipsSubtarget.cpp - Mips Subtarget Information --------------------===//
//
// The LLVM Compiler Infrastructure
//
//
//===----------------------------------------------------------------------===//
//
-// This file implements the Mips specific subclass of TargetSubtarget.
+// This file implements the Mips specific subclass of TargetSubtargetInfo.
//
//===----------------------------------------------------------------------===//
#include "MipsSubtarget.h"
#include "Mips.h"
-#include "MipsGenSubtarget.inc"
-#include "llvm/Module.h"
-#include "llvm/Support/CommandLine.h"
+#include "MipsRegisterInfo.h"
+#include "llvm/Support/TargetRegistry.h"
+
+#define GET_SUBTARGETINFO_TARGET_DESC
+#define GET_SUBTARGETINFO_CTOR
+#include "MipsGenSubtargetInfo.inc"
+
using namespace llvm;
-cl::opt<bool> NotABICall("disable-mips-abicall", cl::Hidden,
- cl::desc("Disable code for SVR4-style dynamic objects"));
-cl::opt<bool> AbsoluteCall("enable-mips-absolute-call", cl::Hidden,
- cl::desc("Enable absolute call within abicall"));
-cl::opt<unsigned> SSThreshold("mips-ssection-threshold", cl::Hidden,
- cl::desc("Small data and bss section threshold size (default=8)"),
- cl::init(8));
+void MipsSubtarget::anchor() { }
-MipsSubtarget::MipsSubtarget(const TargetMachine &TM, const Module &M,
- const std::string &FS, bool little) :
- MipsArchVersion(Mips1), MipsABI(O32), IsLittle(little), IsSingleFloat(false),
- IsFP64bit(false), IsGP64bit(false), HasVFPU(false), HasABICall(true),
- HasAbsoluteCall(false), IsLinux(true), HasSEInReg(false), HasCondMov(false),
- HasMulDivAdd(false), HasMinMax(false), HasSwap(false), HasBitCount(false)
+MipsSubtarget::MipsSubtarget(const std::string &TT, const std::string &CPU,
+ const std::string &FS, bool little) :
+ MipsGenSubtargetInfo(TT, CPU, FS),
+ MipsArchVersion(Mips32), MipsABI(UnknownABI), IsLittle(little),
+ IsSingleFloat(false), IsFP64bit(false), IsGP64bit(false), HasVFPU(false),
+ IsLinux(true), HasSEInReg(false), HasCondMov(false), HasMulDivAdd(false),
+ HasMinMax(false), HasSwap(false), HasBitCount(false), InMips16Mode(false)
{
- std::string CPU = "mips1";
+ std::string CPUName = CPU;
+ if (CPUName.empty())
+ CPUName = "mips32";
// Parse features string.
- ParseSubtargetFeatures(FS, CPU);
- const std::string& TT = M.getTargetTriple();
+ ParseSubtargetFeatures(CPUName, FS);
+
+ // Initialize scheduling itinerary for the specified CPU.
+ InstrItins = getInstrItineraryForCPU(CPUName);
+
+ // Set MipsABI if it hasn't been set yet.
+ if (MipsABI == UnknownABI)
+ MipsABI = hasMips64() ? N64 : O32;
- // Small section size threshold
- SSectionThreshold = SSThreshold;
+ // Check if Architecture and ABI are compatible.
+ assert(((!hasMips64() && (isABI_O32() || isABI_EABI())) ||
+ (hasMips64() && (isABI_N32() || isABI_N64()))) &&
+ "Invalid Arch & ABI pair.");
// Is the target system Linux ?
if (TT.find("linux") == std::string::npos)
IsLinux = false;
+}
- // When only the target triple is specified and is
- // a allegrex target, set the features. We also match
- // big and little endian allegrex cores (dont really
- // know if a big one exists)
- if (TT.find("mipsallegrex") != std::string::npos ||
- TT.find("psp") != std::string::npos) {
- MipsABI = EABI;
- IsSingleFloat = true;
- MipsArchVersion = Mips2;
- HasVFPU = true; // Enables Allegrex Vector FPU (not supported yet)
- HasSEInReg = true;
- HasBitCount = true;
- }
-
- // Abicall is the default for O32 ABI and is ignored
- // for EABI.
- if (NotABICall || isABI_EABI())
- HasABICall = false;
-
- // TODO: disable when handling 64 bit symbols in the future.
- if (HasABICall && AbsoluteCall)
- HasAbsoluteCall = true;
+bool
+MipsSubtarget::enablePostRAScheduler(CodeGenOpt::Level OptLevel,
+ TargetSubtargetInfo::AntiDepBreakMode &Mode,
+ RegClassVector &CriticalPathRCs) const {
+ Mode = TargetSubtargetInfo::ANTIDEP_NONE;
+ CriticalPathRCs.clear();
+ CriticalPathRCs.push_back(hasMips64() ?
+ &Mips::CPU64RegsRegClass : &Mips::CPURegsRegClass);
+ return OptLevel >= CodeGenOpt::Aggressive;
}