llvm-6502/lib/Target/Hexagon/HexagonSubtarget.cpp
Sebastian Pop b72a939d8d fix HexagonSubtarget parsing of -mv flag
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162217 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-20 19:56:47 +00:00

78 lines
2.2 KiB
C++

//===-- HexagonSubtarget.cpp - Hexagon Subtarget Information --------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the Hexagon specific subclass of TargetSubtarget.
//
//===----------------------------------------------------------------------===//
#include "HexagonSubtarget.h"
#include "Hexagon.h"
#include "HexagonRegisterInfo.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorHandling.h"
using namespace llvm;
#define GET_SUBTARGETINFO_CTOR
#define GET_SUBTARGETINFO_TARGET_DESC
#include "HexagonGenSubtargetInfo.inc"
static cl::opt<bool>
EnableV3("enable-hexagon-v3", cl::Hidden,
cl::desc("Enable Hexagon V3 instructions."));
static cl::opt<bool>
EnableMemOps(
"enable-hexagon-memops",
cl::Hidden, cl::ZeroOrMore, cl::ValueDisallowed,
cl::desc("Generate V4 memop instructions."));
static cl::opt<bool>
EnableIEEERndNear(
"enable-hexagon-ieee-rnd-near",
cl::Hidden, cl::ZeroOrMore, cl::init(false),
cl::desc("Generate non-chopped conversion from fp to int."));
HexagonSubtarget::HexagonSubtarget(StringRef TT, StringRef CPU, StringRef FS):
HexagonGenSubtargetInfo(TT, CPU, FS),
CPUString(CPU.str()) {
// If the programmer has not specified a Hexagon version, default to -mv4.
if (CPUString.empty())
CPUString = "hexagonv4";
if (CPUString == "hexagonv2") {
HexagonArchVersion = V2;
} else if (CPUString == "hexagonv3") {
EnableV3 = true;
HexagonArchVersion = V3;
} else if (CPUString == "hexagonv4") {
HexagonArchVersion = V4;
} else if (CPUString == "hexagonv5") {
HexagonArchVersion = V5;
} else {
llvm_unreachable("Unrecognized Hexagon processor version");
}
ParseSubtargetFeatures(CPUString, FS);
// Initialize scheduling itinerary for the specified CPU.
InstrItins = getInstrItineraryForCPU(CPUString);
if (EnableMemOps)
UseMemOps = true;
else
UseMemOps = false;
if (EnableIEEERndNear)
ModeIEEERndNear = true;
else
ModeIEEERndNear = false;
}