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Remove extension whitelist from some transforms

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Remove extension whitelists from transforms that are essentially
combinatorial (and avoiding pointers) or which affect only control flow.
It's very very unlikely an extension will add a new control flow construct.

Remove from:
- dead branch elimination
- dead insertion elimination
- insert extract elimination
- block merge

Fixes https://github.com/KhronosGroup/SPIRV-Tools/issues/1392
This commit is contained in:
David Neto 2018-03-08 12:17:52 -05:00
parent 314cfa29b2
commit 340370eddb
8 changed files with 1 additions and 236 deletions
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54
source/opt/block_merge_pass.cpp
View File

@ -121,27 +121,9 @@ bool BlockMergePass::IsMerge(ir::BasicBlock* block) {
return IsMerge(block->id());
}
void BlockMergePass::Initialize(ir::IRContext* c) {
InitializeProcessing(c);
// Initialize extension whitelist
InitExtensions();
};
bool BlockMergePass::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;
}
void BlockMergePass::Initialize(ir::IRContext* c) { InitializeProcessing(c); };
Pass::Status BlockMergePass::ProcessImpl() {
// Do not process if any disallowed extensions are enabled
if (!AllExtensionsSupported()) return Status::SuccessWithoutChange;
// Process all entry point functions.
ProcessFunction pfn = [this](ir::Function* fp) { return MergeBlocks(fp); };
bool modified = ProcessEntryPointCallTree(pfn, get_module());
@ -155,39 +137,5 @@ Pass::Status BlockMergePass::Process(ir::IRContext* c) {
return ProcessImpl();
}
void BlockMergePass::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",
"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",
});
}
} // namespace opt
} // namespace spvtools

9
source/opt/block_merge_pass.h
View File

@ -48,12 +48,6 @@ class BlockMergePass : public Pass {
// with no other predecessors. Merge these blocks into a single block.
bool MergeBlocks(ir::Function* func);
// Initialize extensions whitelist
void InitExtensions();
// Return true if all extensions in this module are allowed by this pass.
bool AllExtensionsSupported() const;
// Returns true if |block| (or |id|) contains a merge instruction.
bool IsHeader(ir::BasicBlock* block);
bool IsHeader(uint32_t id);
@ -65,9 +59,6 @@ class BlockMergePass : public Pass {
void Initialize(ir::IRContext* c);
Pass::Status ProcessImpl();
// Extensions supported by this pass.
std::unordered_set<std::string> extensions_whitelist_;
};
} // namespace opt

50
source/opt/dead_branch_elim_pass.cpp
View File

@ -367,30 +367,14 @@ bool DeadBranchElimPass::EliminateDeadBranches(ir::Function* func) {
void DeadBranchElimPass::Initialize(ir::IRContext* c) {
InitializeProcessing(c);
// Initialize extension whitelist
InitExtensions();
};
bool DeadBranchElimPass::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 DeadBranchElimPass::ProcessImpl() {
// 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 all entry point functions
ProcessFunction pfn = [this](ir::Function* fp) {
return EliminateDeadBranches(fp);
@ -406,39 +390,5 @@ Pass::Status DeadBranchElimPass::Process(ir::IRContext* module) {
return ProcessImpl();
}
void DeadBranchElimPass::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",
"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",
});
}
} // namespace opt
} // namespace spvtools

9
source/opt/dead_branch_elim_pass.h
View File

@ -128,17 +128,8 @@ class DeadBranchElimPass : public MemPass {
const std::unordered_map<ir::BasicBlock*, ir::BasicBlock*>&
unreachable_continues);
// Initialize extensions whitelist
void InitExtensions();
// Return true if all extensions in this module are allowed by this pass.
bool AllExtensionsSupported() const;
void Initialize(ir::IRContext* c);
Pass::Status ProcessImpl();
// Extensions supported by this pass.
std::unordered_set<std::string> extensions_whitelist_;
};
} // namespace opt

50
source/opt/dead_insert_elim_pass.cpp
View File

@ -244,25 +244,9 @@ bool DeadInsertElimPass::EliminateDeadInsertsOnePass(ir::Function* func) {
void DeadInsertElimPass::Initialize(ir::IRContext* c) {
InitializeProcessing(c);
// Initialize extension whitelist
InitExtensions();
};
bool DeadInsertElimPass::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 DeadInsertElimPass::ProcessImpl() {
// Do not process if any disallowed extensions are enabled
if (!AllExtensionsSupported()) return Status::SuccessWithoutChange;
// Process all entry point functions.
ProcessFunction pfn = [this](ir::Function* fp) {
return EliminateDeadInserts(fp);
@ -278,39 +262,5 @@ Pass::Status DeadInsertElimPass::Process(ir::IRContext* c) {
return ProcessImpl();
}
void DeadInsertElimPass::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",
"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",
});
}
} // namespace opt
} // namespace spvtools

6
source/opt/dead_insert_elim_pass.h
View File

@ -63,9 +63,6 @@ class DeadInsertElimPass : public MemPass {
// arrays are not currently eliminated.
bool EliminateDeadInsertsOnePass(ir::Function* func);
// Initialize extensions whitelist
void InitExtensions();
// Return true if all extensions in this module are allowed by this pass.
bool AllExtensionsSupported() const;
@ -77,9 +74,6 @@ class DeadInsertElimPass : public MemPass {
// Visited phis as insert chain is traversed; used to avoid infinite loop
std::unordered_set<uint32_t> visitedPhis_;
// Extensions supported by this pass.
std::unordered_set<std::string> extensions_whitelist_;
};
} // namespace opt

50
source/opt/insert_extract_elim.cpp
View File

@ -199,25 +199,9 @@ bool InsertExtractElimPass::EliminateInsertExtract(ir::Function* func) {
void InsertExtractElimPass::Initialize(ir::IRContext* c) {
InitializeProcessing(c);
// Initialize extension whitelist
InitExtensions();
};
bool InsertExtractElimPass::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 InsertExtractElimPass::ProcessImpl() {
// Do not process if any disallowed extensions are enabled
if (!AllExtensionsSupported()) return Status::SuccessWithoutChange;
// Process all entry point functions.
ProcessFunction pfn = [this](ir::Function* fp) {
return EliminateInsertExtract(fp);
@ -233,39 +217,5 @@ Pass::Status InsertExtractElimPass::Process(ir::IRContext* c) {
return ProcessImpl();
}
void InsertExtractElimPass::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",
"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",
});
}
} // namespace opt
} // namespace spvtools

9
source/opt/insert_extract_elim.h
View File

@ -51,17 +51,8 @@ class InsertExtractElimPass : public MemPass {
// CompositeConstruct or ConstantComposite.
bool EliminateInsertExtract(ir::Function* func);
// Initialize extensions whitelist
void InitExtensions();
// Return true if all extensions in this module are allowed by this pass.
bool AllExtensionsSupported() const;
void Initialize(ir::IRContext* c);
Pass::Status ProcessImpl();
// Extensions supported by this pass.
std::unordered_set<std::string> extensions_whitelist_;
};
} // namespace opt