mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-02-06 23:32:27 +00:00
b7df516d1f
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213018 91177308-0d34-0410-b5e6-96231b3b80d8
90 lines
2.6 KiB
C++
90 lines
2.6 KiB
C++
//===-- 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"
|
|
#include "llvm/ADT/SmallString.h"
|
|
|
|
#include "llvm/ADT/SmallString.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),
|
|
FP64Denormals(false),
|
|
FP32Denormals(false),
|
|
CaymanISA(false),
|
|
EnableIRStructurizer(true),
|
|
EnablePromoteAlloca(false),
|
|
EnableIfCvt(true),
|
|
WavefrontSize(0),
|
|
CFALUBug(false),
|
|
LocalMemorySize(0),
|
|
InstrItins(getInstrItineraryForCPU(GPU)) {
|
|
// On SI+, we want FP64 denormals to be on by default. FP32 denormals can be
|
|
// enabled, but some instructions do not respect them and they run at the
|
|
// double precision rate, so don't enable by default.
|
|
//
|
|
// We want to be able to turn these off, but making this a subtarget feature
|
|
// for SI has the unhelpful behavior that it unsets everything else if you
|
|
// disable it.
|
|
|
|
SmallString<256> FullFS("+promote-alloca,+fp64-denormals,");
|
|
FullFS += FS;
|
|
|
|
ParseSubtargetFeatures(GPU, FullFS);
|
|
|
|
if (getGeneration() <= AMDGPUSubtarget::NORTHERN_ISLANDS) {
|
|
InstrInfo.reset(new R600InstrInfo(*this));
|
|
|
|
// FIXME: I don't think think Evergreen has any useful support for
|
|
// denormals, but should be checked. Should we issue a warning somewhere if
|
|
// someone tries to enable these?
|
|
FP32Denormals = false;
|
|
FP64Denormals = false;
|
|
} 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.");
|
|
}
|
|
}
|