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/*========================== begin_copyright_notice ============================
Copyright (C) 2017-2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#include "Compiler/Optimizer/OpenCLPasses/ImageFuncs/ImageFuncsAnalysis.hpp"
#include "Compiler/Optimizer/OCLBIUtils.h"
#include "Compiler/IGCPassSupport.h"
#include <set>
#include "Probe/Assertion.h"
using namespace llvm;
using namespace IGC;
// Register pass to igc-opt
#define PASS_FLAG "igc-image-func-analysis"
#define PASS_DESCRIPTION "Analyzes image height, width, depth functions"
#define PASS_CFG_ONLY false
#define PASS_ANALYSIS false
IGC_INITIALIZE_PASS_BEGIN(ImageFuncsAnalysis, PASS_FLAG, PASS_DESCRIPTION, PASS_CFG_ONLY, PASS_ANALYSIS)
IGC_INITIALIZE_PASS_DEPENDENCY(MetaDataUtilsWrapper)
IGC_INITIALIZE_PASS_END(ImageFuncsAnalysis, PASS_FLAG, PASS_DESCRIPTION, PASS_CFG_ONLY, PASS_ANALYSIS)
char ImageFuncsAnalysis::ID = 0;
ImageFuncsAnalysis::ImageFuncsAnalysis() : ModulePass(ID)
{
initializeImageFuncsAnalysisPass(*PassRegistry::getPassRegistry());
}
// All image functions needed resolved by implicit arguments
const llvm::StringRef ImageFuncsAnalysis::GET_IMAGE_HEIGHT = "__builtin_IB_get_image_height";
const llvm::StringRef ImageFuncsAnalysis::GET_IMAGE_WIDTH = "__builtin_IB_get_image_width";
const llvm::StringRef ImageFuncsAnalysis::GET_IMAGE_DEPTH = "__builtin_IB_get_image_depth";
const llvm::StringRef ImageFuncsAnalysis::GET_IMAGE_NUM_MIP_LEVELS = "__builtin_IB_get_image_num_mip_levels";
const llvm::StringRef ImageFuncsAnalysis::GET_IMAGE_CHANNEL_DATA_TYPE = "__builtin_IB_get_image_channel_data_type";
const llvm::StringRef ImageFuncsAnalysis::GET_IMAGE_CHANNEL_ORDER = "__builtin_IB_get_image_channel_order";
const llvm::StringRef ImageFuncsAnalysis::GET_IMAGE_SRGB_CHANNEL_ORDER = "__builtin_IB_get_image_srgb_channel_order";
const llvm::StringRef ImageFuncsAnalysis::GET_IMAGE_ARRAY_SIZE = "__builtin_IB_get_image_array_size";
const llvm::StringRef ImageFuncsAnalysis::GET_IMAGE_NUM_SAMPLES = "__builtin_IB_get_image_num_samples";
const llvm::StringRef ImageFuncsAnalysis::GET_SAMPLER_ADDRESS_MODE = "__builtin_IB_get_address_mode";
const llvm::StringRef ImageFuncsAnalysis::GET_SAMPLER_NORMALIZED_COORDS = "__builtin_IB_is_normalized_coords";
const llvm::StringRef ImageFuncsAnalysis::GET_SAMPLER_SNAP_WA_REQUIRED = "__builtin_IB_get_snap_wa_reqd";
const llvm::StringRef ImageFuncsAnalysis::GET_FLAT_IMAGE_BASEOFFSET = "__builtin_IB_get_flat_image_baseoffset";
const llvm::StringRef ImageFuncsAnalysis::GET_FLAT_IMAGE_HEIGHT = "__builtin_IB_get_flat_image_height";
const llvm::StringRef ImageFuncsAnalysis::GET_FLAT_IMAGE_WIDTH = "__builtin_IB_get_flat_image_width";
const llvm::StringRef ImageFuncsAnalysis::GET_FLAT_IMAGE_PITCH = "__builtin_IB_get_flat_image_pitch";
bool ImageFuncsAnalysis::runOnModule(Module& M) {
bool changed = false;
m_pMDUtils = getAnalysis<MetaDataUtilsWrapper>().getMetaDataUtils();
// Run on all functions defined in this module
for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I) {
Function* pFunc = &(*I);
if (pFunc->isDeclaration()) continue;
if (runOnFunction(*pFunc))
{
changed = true;
}
}
// Update LLVM metadata based on IGC MetadataUtils
if (changed)
m_pMDUtils->save(M.getContext());
return changed;
}
bool ImageFuncsAnalysis::runOnFunction(Function& F) {
// Visit the function
visit(F);
ImplicitArgs::addImageArgs(F, m_argMap, getAnalysis<MetaDataUtilsWrapper>().getMetaDataUtils());
m_argMap.clear();
return true;
}
void ImageFuncsAnalysis::visitCallInst(CallInst& CI)
{
if (!CI.getCalledFunction())
{
return;
}
StringRef funcName = CI.getCalledFunction()->getName();
// Check for OpenCL image dimension function calls
std::set<int>* imageFunc = nullptr;
if (funcName == GET_IMAGE_HEIGHT)
{
imageFunc = &m_argMap[ImplicitArg::IMAGE_HEIGHT];
}
else if (funcName == GET_IMAGE_WIDTH)
{
imageFunc = &m_argMap[ImplicitArg::IMAGE_WIDTH];
}
else if (funcName == GET_IMAGE_DEPTH)
{
imageFunc = &m_argMap[ImplicitArg::IMAGE_DEPTH];
}
else if (funcName == GET_IMAGE_NUM_MIP_LEVELS)
{
imageFunc = &m_argMap[ImplicitArg::IMAGE_NUM_MIP_LEVELS];
}
else if (funcName == GET_IMAGE_CHANNEL_DATA_TYPE)
{
imageFunc = &m_argMap[ImplicitArg::IMAGE_CHANNEL_DATA_TYPE];
}
else if (funcName == GET_IMAGE_CHANNEL_ORDER)
{
imageFunc = &m_argMap[ImplicitArg::IMAGE_CHANNEL_ORDER];
}
else if (funcName == GET_IMAGE_SRGB_CHANNEL_ORDER)
{
imageFunc = &m_argMap[ImplicitArg::IMAGE_SRGB_CHANNEL_ORDER];
}
else if (funcName == GET_IMAGE_ARRAY_SIZE)
{
imageFunc = &m_argMap[ImplicitArg::IMAGE_ARRAY_SIZE];
}
else if (funcName == GET_IMAGE_NUM_SAMPLES)
{
imageFunc = &m_argMap[ImplicitArg::IMAGE_NUM_SAMPLES];
}
else if (funcName == GET_SAMPLER_ADDRESS_MODE)
{
imageFunc = &m_argMap[ImplicitArg::SAMPLER_ADDRESS];
}
else if (funcName == GET_SAMPLER_NORMALIZED_COORDS)
{
imageFunc = &m_argMap[ImplicitArg::SAMPLER_NORMALIZED];
}
else if (funcName == GET_SAMPLER_SNAP_WA_REQUIRED)
{
imageFunc = &m_argMap[ImplicitArg::SAMPLER_SNAP_WA];
}
else if (funcName == GET_FLAT_IMAGE_BASEOFFSET)
{
imageFunc = &m_argMap[ImplicitArg::FLAT_IMAGE_BASEOFFSET];
}
else if (funcName == GET_FLAT_IMAGE_HEIGHT)
{
imageFunc = &m_argMap[ImplicitArg::FLAT_IMAGE_HEIGHT];
}
else if (funcName == GET_FLAT_IMAGE_WIDTH)
{
imageFunc = &m_argMap[ImplicitArg::FLAT_IMAGE_WIDTH];
}
else if (funcName == GET_FLAT_IMAGE_PITCH)
{
imageFunc = &m_argMap[ImplicitArg::FLAT_IMAGE_PITCH];
}
else
{
// Non image function, do nothing
return;
}
// Extract the arg num and add it to the appropriate data structure
IGC_ASSERT_MESSAGE(IGCLLVM::getNumArgOperands(&CI) == 1, "Supported image/sampler functions are expected to have only one argument");
// We only care about image and sampler arguments here, inline samplers
// don't require extra kernel parameters.
Value* callArg = ValueTracker::track(&CI, 0, getAnalysis<MetaDataUtilsWrapper>().getMetaDataUtils(), getAnalysis<MetaDataUtilsWrapper>().getModuleMetaData());
// TODO: For now assume that we may not trace a sampler/texture for indirect access.
// In this case we provide no WA support for indirect case and all WAs will return 0.
// These WAs need to be reworked to support indirect case in the future.
if (callArg)
{
if (Argument * arg = dyn_cast<Argument>(callArg))
{
imageFunc->insert(arg->getArgNo());
}
}
else
{
// Only these args should be hit by the indirect case
IGC_ASSERT(funcName == GET_SAMPLER_NORMALIZED_COORDS || funcName == GET_SAMPLER_SNAP_WA_REQUIRED);
}
}
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