llvm-6502/lib/Target/Hexagon/HexagonSubtarget.cpp
Chandler Carruth d410eaba04 Revert r155365, r155366, and r155367. All three of these have regression
test suite failures. The failures occur at each stage, and only get
worse, so I'm reverting all of them.

Please resubmit these patches, one at a time, after verifying that the
regression test suite passes. Never submit a patch without running the
regression test suite.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155372 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-23 18:25:57 +00:00

63 lines
1.7 KiB
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//===-- 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 "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 in code generation for Hexagon target"));
HexagonSubtarget::HexagonSubtarget(StringRef TT, StringRef CPU, StringRef FS):
HexagonGenSubtargetInfo(TT, CPU, FS),
HexagonArchVersion(V1),
CPUString(CPU.str()) {
ParseSubtargetFeatures(CPU, FS);
switch(HexagonArchVersion) {
case HexagonSubtarget::V2:
break;
case HexagonSubtarget::V3:
EnableV3 = true;
break;
case HexagonSubtarget::V4:
break;
default:
llvm_unreachable("Unknown Architecture Version.");
}
// Initialize scheduling itinerary for the specified CPU.
InstrItins = getInstrItineraryForCPU(CPUString);
// Max issue per cycle == bundle width.
InstrItins.IssueWidth = 4;
if (EnableMemOps)
UseMemOps = true;
else
UseMemOps = false;
}