1//===-- AMDGPUFeatures.td - AMDGPU Feature Definitions -----*- tablegen -*-===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8 9def FeatureFP64 : SubtargetFeature<"fp64", 10 "FP64", 11 "true", 12 "Enable double precision operations" 13>; 14 15def FeatureFMA : SubtargetFeature<"fmaf", 16 "FMA", 17 "true", 18 "Enable single precision FMA (not as fast as mul+add, but fused)" 19>; 20 21class SubtargetFeatureLocalMemorySize <int Value> : SubtargetFeature< 22 "localmemorysize"#Value, 23 "LocalMemorySize", 24 !cast<string>(Value), 25 "The size of local memory in bytes" 26>; 27 28def FeatureLocalMemorySize32768 : SubtargetFeatureLocalMemorySize<32768>; 29def FeatureLocalMemorySize65536 : SubtargetFeatureLocalMemorySize<65536>; 30 31class SubtargetFeatureWavefrontSize <int ValueLog2> : SubtargetFeature< 32 "wavefrontsize"#!shl(1, ValueLog2), 33 "WavefrontSizeLog2", 34 !cast<string>(ValueLog2), 35 "The number of threads per wavefront" 36>; 37 38def FeatureWavefrontSize16 : SubtargetFeatureWavefrontSize<4>; 39def FeatureWavefrontSize32 : SubtargetFeatureWavefrontSize<5>; 40def FeatureWavefrontSize64 : SubtargetFeatureWavefrontSize<6>; 41 42class SubtargetFeatureGeneration <string Value, string FeatureName, 43 string Subtarget, 44 list<SubtargetFeature> Implies> : 45 SubtargetFeature <FeatureName, "Gen", Subtarget#"::"#Value, 46 Value#" GPU generation", Implies>; 47 48def FeaturePromoteAlloca : SubtargetFeature <"promote-alloca", 49 "EnablePromoteAlloca", 50 "true", 51 "Enable promote alloca pass" 52>; 53 54