mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-12-12 03:30:09 +00:00
2d2a512691
* Move ProcessFunction* function from pass to the context. There are a few functions that are used to traverse the call tree. They currently live in the Pass class, but they have nothing to do with a pass, and may be needed outside of a pass. They would be better in the ir context, or in a specific call tree class if we ever have a need for it. * Don't inline recursive functions. Inlining does not check if a function is recursive or not. This has been fine as long as the shader was a Vulkan shader, which forbid recursive functions. However, not all shaders are vulkan, so either we limit inlining to Vulkan shaders or we teach it to look for recursive functions. I prefer to keep the passes as general as is reasonable. The change does not require much new code in inlining and gives a reason to refactor some other code. The changes are to add a member function to the Function class that checks if that function is recursive or not. Then this is used in inlining to not inlining a function call if it calls a recursive function. * Add id to function analysis There are a few places that build a map from ids to Function whose result is that id. I decided to add an analysis to the context for this to reduce that code, and simplify some of the functions. * Add missing file.
113 lines
4.1 KiB
C++
113 lines
4.1 KiB
C++
// Copyright (c) 2017 The Khronos Group Inc.
|
|
// Copyright (c) 2017 Valve Corporation
|
|
// Copyright (c) 2017 LunarG Inc.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include "source/opt/local_ssa_elim_pass.h"
|
|
|
|
#include "source/cfa.h"
|
|
#include "source/opt/iterator.h"
|
|
#include "source/opt/ssa_rewrite_pass.h"
|
|
|
|
namespace spvtools {
|
|
namespace opt {
|
|
|
|
bool LocalMultiStoreElimPass::AllExtensionsSupported() const {
|
|
// If any extension not in whitelist, return false
|
|
for (auto& ei : get_module()->extensions()) {
|
|
const char* extName =
|
|
reinterpret_cast<const char*>(&ei.GetInOperand(0).words[0]);
|
|
if (extensions_whitelist_.find(extName) == extensions_whitelist_.end())
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
Pass::Status LocalMultiStoreElimPass::ProcessImpl() {
|
|
// Assumes relaxed logical addressing only (see instruction.h)
|
|
// TODO(greg-lunarg): Add support for physical addressing
|
|
if (context()->get_feature_mgr()->HasCapability(SpvCapabilityAddresses))
|
|
return Status::SuccessWithoutChange;
|
|
// Do not process if module contains OpGroupDecorate. Additional
|
|
// support required in KillNamesAndDecorates().
|
|
// TODO(greg-lunarg): Add support for OpGroupDecorate
|
|
for (auto& ai : get_module()->annotations())
|
|
if (ai.opcode() == SpvOpGroupDecorate) return Status::SuccessWithoutChange;
|
|
// Do not process if any disallowed extensions are enabled
|
|
if (!AllExtensionsSupported()) return Status::SuccessWithoutChange;
|
|
// Process functions
|
|
ProcessFunction pfn = [this](Function* fp) {
|
|
return SSARewriter(this).RewriteFunctionIntoSSA(fp);
|
|
};
|
|
bool modified = context()->ProcessEntryPointCallTree(pfn);
|
|
return modified ? Status::SuccessWithChange : Status::SuccessWithoutChange;
|
|
}
|
|
|
|
LocalMultiStoreElimPass::LocalMultiStoreElimPass() = default;
|
|
|
|
Pass::Status LocalMultiStoreElimPass::Process() {
|
|
// Initialize extension whitelist
|
|
InitExtensions();
|
|
return ProcessImpl();
|
|
}
|
|
|
|
void LocalMultiStoreElimPass::InitExtensions() {
|
|
extensions_whitelist_.clear();
|
|
extensions_whitelist_.insert({
|
|
"SPV_AMD_shader_explicit_vertex_parameter",
|
|
"SPV_AMD_shader_trinary_minmax",
|
|
"SPV_AMD_gcn_shader",
|
|
"SPV_KHR_shader_ballot",
|
|
"SPV_AMD_shader_ballot",
|
|
"SPV_AMD_gpu_shader_half_float",
|
|
"SPV_KHR_shader_draw_parameters",
|
|
"SPV_KHR_subgroup_vote",
|
|
"SPV_KHR_16bit_storage",
|
|
"SPV_KHR_device_group",
|
|
"SPV_KHR_multiview",
|
|
"SPV_NVX_multiview_per_view_attributes",
|
|
"SPV_NV_viewport_array2",
|
|
"SPV_NV_stereo_view_rendering",
|
|
"SPV_NV_sample_mask_override_coverage",
|
|
"SPV_NV_geometry_shader_passthrough",
|
|
"SPV_AMD_texture_gather_bias_lod",
|
|
"SPV_KHR_storage_buffer_storage_class",
|
|
// SPV_KHR_variable_pointers
|
|
// Currently do not support extended pointer expressions
|
|
"SPV_AMD_gpu_shader_int16",
|
|
"SPV_KHR_post_depth_coverage",
|
|
"SPV_KHR_shader_atomic_counter_ops",
|
|
"SPV_EXT_shader_stencil_export",
|
|
"SPV_EXT_shader_viewport_index_layer",
|
|
"SPV_AMD_shader_image_load_store_lod",
|
|
"SPV_AMD_shader_fragment_mask",
|
|
"SPV_EXT_fragment_fully_covered",
|
|
"SPV_AMD_gpu_shader_half_float_fetch",
|
|
"SPV_GOOGLE_decorate_string",
|
|
"SPV_GOOGLE_hlsl_functionality1",
|
|
"SPV_NV_shader_subgroup_partitioned",
|
|
"SPV_EXT_descriptor_indexing",
|
|
"SPV_NV_fragment_shader_barycentric",
|
|
"SPV_NV_compute_shader_derivatives",
|
|
"SPV_NV_shader_image_footprint",
|
|
"SPV_NV_shading_rate",
|
|
"SPV_NV_mesh_shader",
|
|
"SPV_NV_ray_tracing",
|
|
"SPV_EXT_fragment_invocation_density",
|
|
});
|
|
}
|
|
|
|
} // namespace opt
|
|
} // namespace spvtools
|