llvm-project/llvm/lib/Target/SPIRV/SPIRVTargetTransformInfo.cpp
Arseniy Obolenskiy d8f71b1638
[SPIR-V] Add support for SPV_INTEL_masked_gather_scatter extension (#185418)
Fixes the first bullet in #184638 

Corresponding patch to add support for vector operands in
OpConvertPtrToU/OpConvertUToPtr operations in spirv-val:
https://github.com/KhronosGroup/SPIRV-Tools/pull/6575

SPIR-V extension reference used:
278044a51f/extensions/INTEL/SPV_INTEL_masked_gather_scatter.asciidoc
2026-03-11 13:14:36 +01:00

50 lines
1.7 KiB
C++

//===- SPIRVTargetTransformInfo.cpp - SPIR-V specific TTI -------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "SPIRVTargetTransformInfo.h"
#include "SPIRVSubtarget.h"
#include "llvm/IR/IntrinsicsSPIRV.h"
using namespace llvm;
bool llvm::SPIRVTTIImpl::collectFlatAddressOperands(
SmallVectorImpl<int> &OpIndexes, Intrinsic::ID IID) const {
switch (IID) {
case Intrinsic::spv_generic_cast_to_ptr_explicit:
OpIndexes.push_back(0);
return true;
default:
return false;
}
}
Value *llvm::SPIRVTTIImpl::rewriteIntrinsicWithAddressSpace(IntrinsicInst *II,
Value *OldV,
Value *NewV) const {
auto IntrID = II->getIntrinsicID();
switch (IntrID) {
case Intrinsic::spv_generic_cast_to_ptr_explicit: {
unsigned NewAS = NewV->getType()->getPointerAddressSpace();
unsigned DstAS = II->getType()->getPointerAddressSpace();
return NewAS == DstAS ? NewV
: ConstantPointerNull::get(
PointerType::get(NewV->getContext(), DstAS));
}
default:
return nullptr;
}
}
bool SPIRVTTIImpl::isLegalMaskedGather(Type *DataType, Align Alignment) const {
return ST->canUseExtension(SPIRV::Extension::SPV_INTEL_masked_gather_scatter);
}
bool SPIRVTTIImpl::isLegalMaskedScatter(Type *DataType, Align Alignment) const {
return ST->canUseExtension(SPIRV::Extension::SPV_INTEL_masked_gather_scatter);
}