64 lines
2.1 KiB
TableGen
64 lines
2.1 KiB
TableGen
//===-- AMDGPUFeatures.td - AMDGPU Feature Definitions -----*- tablegen -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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def FeatureFP64 : SubtargetFeature<"fp64",
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"FP64",
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"true",
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"Enable double precision operations"
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>;
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def FeatureFMA : SubtargetFeature<"fmaf",
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"FMA",
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"true",
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"Enable single precision FMA (not as fast as mul+add, but fused)"
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>;
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// Some instructions do not support denormals despite this flag. Using
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// fp32 denormals also causes instructions to run at the double
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// precision rate for the device.
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def FeatureFP32Denormals : SubtargetFeature<"fp32-denormals",
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"FP32Denormals",
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"true",
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"Enable single precision denormal handling"
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>;
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class SubtargetFeatureLocalMemorySize <int Value> : SubtargetFeature<
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"localmemorysize"#Value,
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"LocalMemorySize",
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!cast<string>(Value),
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"The size of local memory in bytes"
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>;
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def FeatureLocalMemorySize0 : SubtargetFeatureLocalMemorySize<0>;
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def FeatureLocalMemorySize32768 : SubtargetFeatureLocalMemorySize<32768>;
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def FeatureLocalMemorySize65536 : SubtargetFeatureLocalMemorySize<65536>;
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class SubtargetFeatureWavefrontSize <int Value> : SubtargetFeature<
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"wavefrontsize"#Value,
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"WavefrontSize",
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!cast<string>(Value),
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"The number of threads per wavefront"
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>;
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def FeatureWavefrontSize16 : SubtargetFeatureWavefrontSize<16>;
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def FeatureWavefrontSize32 : SubtargetFeatureWavefrontSize<32>;
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def FeatureWavefrontSize64 : SubtargetFeatureWavefrontSize<64>;
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class SubtargetFeatureGeneration <string Value, string FeatureName,
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string Subtarget,
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list<SubtargetFeature> Implies> :
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SubtargetFeature <FeatureName, "Gen", Subtarget#"::"#Value,
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Value#" GPU generation", Implies>;
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def FeaturePromoteAlloca : SubtargetFeature <"promote-alloca",
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"EnablePromoteAlloca",
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"true",
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"Enable promote alloca pass"
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>;
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