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//===-- AMDGPUSubtarget.cpp - AMDGPU Subtarget Information ----------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
/// \file
/// \brief Implements the AMDGPU specific subclass of TargetSubtarget.
//
//===----------------------------------------------------------------------===//
#include "AMDGPUSubtarget.h"
#include "R600InstrInfo.h"
#include "SIInstrInfo.h"
using namespace llvm;
#define DEBUG_TYPE "amdgpu-subtarget"
#define GET_SUBTARGETINFO_ENUM
#define GET_SUBTARGETINFO_TARGET_DESC
#define GET_SUBTARGETINFO_CTOR
#include "AMDGPUGenSubtargetInfo.inc"
AMDGPUSubtarget::AMDGPUSubtarget(StringRef TT, StringRef GPU, StringRef FS) :
AMDGPUGenSubtargetInfo(TT, GPU, FS),
DevName(GPU),
Is64bit(false),
DumpCode(false),
R600ALUInst(false),
HasVertexCache(false),
TexVTXClauseSize(0),
Gen(AMDGPUSubtarget::R600),
FP64(false),
CaymanISA(false),
EnableIRStructurizer(true),
EnableIfCvt(true),
WavefrontSize(0),
CFALUBug(false),
LocalMemorySize(0),
InstrItins(getInstrItineraryForCPU(GPU)) {
ParseSubtargetFeatures(GPU, FS);
if (getGeneration() <= AMDGPUSubtarget::NORTHERN_ISLANDS) {
InstrInfo.reset(new R600InstrInfo(*this));
} else {
InstrInfo.reset(new SIInstrInfo(*this));
}
}
unsigned AMDGPUSubtarget::getStackEntrySize() const {
assert(getGeneration() <= NORTHERN_ISLANDS);
switch(getWavefrontSize()) {
case 16:
return 8;
case 32:
return hasCaymanISA() ? 4 : 8;
case 64:
return 4;
default:
llvm_unreachable("Illegal wavefront size.");
}
}
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