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//===-- AMDGPUFeatures.td - AMDGPU Feature Definitions -----*- tablegen -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
def FeatureFP64 : SubtargetFeature<"fp64",
"FP64",
"true",
"Enable double precision operations"
>;
def FeatureFMA : SubtargetFeature<"fmaf",
"FMA",
"true",
"Enable single precision FMA (not as fast as mul+add, but fused)"
>;
// Addressable local memory size is the maximum number of bytes of LDS that can
// be allocated to a single workgroup.
class SubtargetFeatureAddressableLocalMemorySize <int Value> : SubtargetFeature<
"addressablelocalmemorysize"#Value,
"AddressableLocalMemorySize",
!cast<string>(Value),
"The size of local memory in bytes"
>;
def FeatureAddressableLocalMemorySize32768 : SubtargetFeatureAddressableLocalMemorySize<32768>;
def FeatureAddressableLocalMemorySize65536 : SubtargetFeatureAddressableLocalMemorySize<65536>;
def FeatureAddressableLocalMemorySize163840 : SubtargetFeatureAddressableLocalMemorySize<163840>;
class SubtargetFeatureWavefrontSize <int ValueLog2> : SubtargetFeature<
"wavefrontsize"#!shl(1, ValueLog2),
"WavefrontSizeLog2",
!cast<string>(ValueLog2),
"The number of threads per wavefront"
>;
def FeatureWavefrontSize16 : SubtargetFeatureWavefrontSize<4>;
def FeatureWavefrontSize32 : SubtargetFeatureWavefrontSize<5>;
def FeatureWavefrontSize64 : SubtargetFeatureWavefrontSize<6>;
class SubtargetFeatureGeneration <string Value, string FeatureName,
string Subtarget,
list<SubtargetFeature> Implies> :
SubtargetFeature <FeatureName, "Gen", Subtarget#"::"#Value,
Value#" GPU generation", Implies>;
def FeaturePromoteAlloca : SubtargetFeature <"promote-alloca",
"EnablePromoteAlloca",
"true",
"Enable promote alloca pass"
>;
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