mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-12-26 17:51:02 +00:00
Revert "Improvements to vector dce."
This reverts commit 2813722993.
A regression was found. Undoing the change until it is fixed.
This commit is contained in:
Steven Perron
parent
4246abdc74
commit
a00a0a09ae
@ -596,82 +596,5 @@ bool Instruction::IsOpcodeCodeMotionSafe() const {
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}
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}
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bool Instruction::IsScalarizable() const {
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if (spvOpcodeIsScalarizable(opcode())) {
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return true;
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}
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const uint32_t kExtInstSetIdInIdx = 0;
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const uint32_t kExtInstInstructionInIdx = 1;
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if (opcode() == SpvOpExtInst) {
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uint32_t instSetId =
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context()->get_feature_mgr()->GetExtInstImportId_GLSLstd450();
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if (GetSingleWordInOperand(kExtInstSetIdInIdx) == instSetId) {
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switch (GetSingleWordInOperand(kExtInstInstructionInIdx)) {
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case GLSLstd450Round:
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case GLSLstd450RoundEven:
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case GLSLstd450Trunc:
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case GLSLstd450FAbs:
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case GLSLstd450SAbs:
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case GLSLstd450FSign:
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case GLSLstd450SSign:
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case GLSLstd450Floor:
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case GLSLstd450Ceil:
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case GLSLstd450Fract:
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case GLSLstd450Radians:
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case GLSLstd450Degrees:
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case GLSLstd450Sin:
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case GLSLstd450Cos:
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case GLSLstd450Tan:
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case GLSLstd450Asin:
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case GLSLstd450Acos:
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case GLSLstd450Atan:
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case GLSLstd450Sinh:
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case GLSLstd450Cosh:
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case GLSLstd450Tanh:
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case GLSLstd450Asinh:
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case GLSLstd450Acosh:
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case GLSLstd450Atanh:
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case GLSLstd450Atan2:
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case GLSLstd450Pow:
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case GLSLstd450Exp:
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case GLSLstd450Log:
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case GLSLstd450Exp2:
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case GLSLstd450Log2:
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case GLSLstd450Sqrt:
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case GLSLstd450InverseSqrt:
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case GLSLstd450Modf:
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case GLSLstd450FMin:
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case GLSLstd450UMin:
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case GLSLstd450SMin:
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case GLSLstd450FMax:
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case GLSLstd450UMax:
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case GLSLstd450SMax:
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case GLSLstd450FClamp:
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case GLSLstd450UClamp:
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case GLSLstd450SClamp:
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case GLSLstd450FMix:
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case GLSLstd450Step:
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case GLSLstd450SmoothStep:
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case GLSLstd450Fma:
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case GLSLstd450Frexp:
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case GLSLstd450Ldexp:
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case GLSLstd450FindILsb:
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case GLSLstd450FindSMsb:
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case GLSLstd450FindUMsb:
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case GLSLstd450NMin:
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case GLSLstd450NMax:
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case GLSLstd450NClamp:
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return true;
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default:
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return false;
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}
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}
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}
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return false;
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}
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} // namespace ir
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} // namespace spvtools
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@ -24,7 +24,6 @@
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#include "operand.h"
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#include "util/ilist_node.h"
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#include "latest_version_glsl_std_450_header.h"
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#include "latest_version_spirv_header.h"
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#include "reflect.h"
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#include "spirv-tools/libspirv.h"
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@ -406,8 +405,6 @@ class Instruction : public utils::IntrusiveNodeBase<Instruction> {
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// is always added to |options|.
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std::string PrettyPrint(uint32_t options = 0u) const;
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bool IsScalarizable() const;
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private:
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// Returns the total count of result type id and result id.
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uint32_t TypeResultIdCount() const {
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@ -702,7 +699,6 @@ bool Instruction::IsAtomicOp() const { return spvOpcodeIsAtomicOp(opcode()); }
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bool Instruction::IsConstant() const {
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return IsCompileTimeConstantInst(opcode());
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}
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} // namespace ir
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} // namespace spvtools
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@ -45,14 +45,27 @@ void VectorDCE::FindLiveComponents(ir::Function* function,
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// Prime the work list. We will assume that any instruction that does
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// not result in a vector is live.
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//
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// TODO: If we want to remove all of the dead code with the current
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// implementation, we will have to iterate VectorDCE and ADCE. That can be
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// avoided if we treat scalar results as if they are vectors with 1 element.
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//
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// Extending to structures and matrices is not as straight forward because of
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// the nesting. We cannot simply us a bit vector to keep track of which
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// components are live because of arbitrary nesting of structs.
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function->ForEachInst(
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[&work_list, this, live_components](ir::Instruction* current_inst) {
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if (!HasVectorOrScalarResult(current_inst)) {
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MarkUsesAsLive(current_inst, all_components_live_, live_components,
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&work_list);
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bool is_vector = HasVectorResult(current_inst);
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if (!is_vector) {
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switch (current_inst->opcode()) {
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case SpvOpCompositeExtract:
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MarkExtractUseAsLive(current_inst, live_components, &work_list);
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break;
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default:
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MarkUsesAsLive(current_inst, all_components_live_,
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live_components, &work_list);
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break;
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}
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}
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});
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@ -62,9 +75,6 @@ void VectorDCE::FindLiveComponents(ir::Function* function,
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ir::Instruction* current_inst = current_item.instruction;
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switch (current_inst->opcode()) {
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case SpvOpCompositeExtract:
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MarkExtractUseAsLive(current_inst, live_components, &work_list);
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break;
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case SpvOpCompositeInsert:
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MarkInsertUsesAsLive(current_item, live_components, &work_list);
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break;
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@ -72,11 +82,13 @@ void VectorDCE::FindLiveComponents(ir::Function* function,
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MarkVectorShuffleUsesAsLive(current_item, live_components, &work_list);
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break;
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case SpvOpCompositeConstruct:
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MarkCompositeContructUsesAsLive(current_item, live_components,
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// TODO: If we have a vector parameter, then we can determine which
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// of its components are live.
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MarkUsesAsLive(current_inst, all_components_live_, live_components,
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&work_list);
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break;
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default:
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if (current_inst->IsScalarizable()) {
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if (spvOpcodeIsScalarizable(current_inst->opcode())) {
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MarkUsesAsLive(current_inst, current_item.components, live_components,
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&work_list);
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} else {
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@ -96,7 +108,7 @@ void VectorDCE::MarkExtractUseAsLive(const ir::Instruction* current_inst,
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current_inst->GetSingleWordInOperand(kExtractCompositeIdInIdx);
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ir::Instruction* operand_inst = def_use_mgr->GetDef(operand_id);
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if (HasVectorOrScalarResult(operand_inst)) {
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if (HasVectorResult(operand_inst)) {
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WorkListItem new_item;
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new_item.instruction = operand_inst;
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new_item.components.Set(current_inst->GetSingleWordInOperand(1));
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@ -157,46 +169,6 @@ void VectorDCE::MarkVectorShuffleUsesAsLive(
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AddItemToWorkListIfNeeded(second_operand, live_components, work_list);
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}
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void VectorDCE::MarkCompositeContructUsesAsLive(
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VectorDCE::WorkListItem work_item,
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VectorDCE::LiveComponentMap* live_components,
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std::vector<VectorDCE::WorkListItem>* work_list) {
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analysis::DefUseManager* def_use_mgr = context()->get_def_use_mgr();
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analysis::TypeManager* type_mgr = context()->get_type_mgr();
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uint32_t current_component = 0;
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ir::Instruction* current_inst = work_item.instruction;
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uint32_t num_in_operands = current_inst->NumInOperands();
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for (uint32_t i = 0; i < num_in_operands; ++i) {
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uint32_t id = current_inst->GetSingleWordInOperand(i);
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ir::Instruction* op_inst = def_use_mgr->GetDef(id);
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if (HasScalarResult(op_inst)) {
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WorkListItem new_work_item;
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new_work_item.instruction = op_inst;
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if (work_item.components.Get(current_component)) {
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new_work_item.components.Set(0);
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}
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AddItemToWorkListIfNeeded(new_work_item, live_components, work_list);
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current_component++;
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} else {
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assert(HasVectorResult(op_inst));
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WorkListItem new_work_item;
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new_work_item.instruction = op_inst;
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uint32_t op_vector_size =
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type_mgr->GetType(op_inst->result_id())->AsVector()->element_count();
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for (uint32_t op_vector_idx = 0; op_vector_idx < op_vector_size;
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op_vector_idx++, current_component++) {
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if (work_item.components.Get(current_component)) {
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new_work_item.components.Set(op_vector_idx);
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}
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}
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AddItemToWorkListIfNeeded(new_work_item, live_components, work_list);
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}
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}
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}
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void VectorDCE::MarkUsesAsLive(
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ir::Instruction* current_inst, const utils::BitVector& live_elements,
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LiveComponentMap* live_components,
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@ -212,19 +184,10 @@ void VectorDCE::MarkUsesAsLive(
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new_item.instruction = operand_inst;
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new_item.components = live_elements;
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AddItemToWorkListIfNeeded(new_item, live_components, work_list);
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} else if (HasScalarResult(operand_inst)) {
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WorkListItem new_item;
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new_item.instruction = operand_inst;
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new_item.components.Set(0);
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AddItemToWorkListIfNeeded(new_item, live_components, work_list);
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}
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});
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}
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bool VectorDCE::HasVectorOrScalarResult(const ir::Instruction* inst) const {
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return HasScalarResult(inst) || HasVectorResult(inst);
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}
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bool VectorDCE::HasVectorResult(const ir::Instruction* inst) const {
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analysis::TypeManager* type_mgr = context()->get_type_mgr();
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if (inst->type_id() == 0) {
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@ -232,29 +195,8 @@ bool VectorDCE::HasVectorResult(const ir::Instruction* inst) const {
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}
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const analysis::Type* current_type = type_mgr->GetType(inst->type_id());
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switch (current_type->kind()) {
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case analysis::Type::kVector:
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return true;
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default:
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return false;
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}
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}
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bool VectorDCE::HasScalarResult(const ir::Instruction* inst) const {
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analysis::TypeManager* type_mgr = context()->get_type_mgr();
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if (inst->type_id() == 0) {
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return false;
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}
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const analysis::Type* current_type = type_mgr->GetType(inst->type_id());
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switch (current_type->kind()) {
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case analysis::Type::kBool:
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case analysis::Type::kInteger:
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case analysis::Type::kFloat:
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return true;
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default:
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return false;
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}
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bool is_vector = current_type->AsVector() != nullptr;
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return is_vector;
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}
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bool VectorDCE::RewriteInstructions(
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@ -287,10 +229,19 @@ bool VectorDCE::RewriteInstructions(
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}
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switch (current_inst->opcode()) {
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case SpvOpCompositeInsert:
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modified |=
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RewriteInsertInstruction(current_inst, live_component->second);
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break;
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case SpvOpCompositeInsert: {
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// If the value being inserted is not live, then we can skip the
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// insert.
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uint32_t insert_index = current_inst->GetSingleWordInOperand(2);
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if (!live_component->second.Get(insert_index)) {
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modified = true;
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context()->KillNamesAndDecorates(current_inst->result_id());
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uint32_t composite_id =
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current_inst->GetSingleWordInOperand(kInsertCompositeIdInIdx);
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context()->ReplaceAllUsesWith(current_inst->result_id(),
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composite_id);
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}
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} break;
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case SpvOpCompositeConstruct:
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// TODO: The members that are not live can be replaced by an undef
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// or constant. This will remove uses of those values, and possibly
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@ -304,33 +255,6 @@ bool VectorDCE::RewriteInstructions(
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return modified;
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}
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bool VectorDCE::RewriteInsertInstruction(
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ir::Instruction* current_inst, const utils::BitVector& live_components) {
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// If the value being inserted is not live, then we can skip the insert.
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bool modified = false;
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uint32_t insert_index = current_inst->GetSingleWordInOperand(2);
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if (!live_components.Get(insert_index)) {
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modified = true;
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context()->KillNamesAndDecorates(current_inst->result_id());
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uint32_t composite_id =
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current_inst->GetSingleWordInOperand(kInsertCompositeIdInIdx);
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context()->ReplaceAllUsesWith(current_inst->result_id(), composite_id);
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}
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// If the values already in the composite are not used, then replace it with
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// an undef.
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utils::BitVector temp = live_components;
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temp.Clear(insert_index);
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if (temp.Empty()) {
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context()->ForgetUses(current_inst);
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uint32_t undef_id = Type2Undef(current_inst->type_id());
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current_inst->SetInOperand(kInsertCompositeIdInIdx, {undef_id});
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context()->AnalyzeUses(current_inst);
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}
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return modified;
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}
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void VectorDCE::AddItemToWorkListIfNeeded(
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WorkListItem work_item, VectorDCE::LiveComponentMap* live_components,
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std::vector<WorkListItem>* work_list) {
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@ -71,26 +71,8 @@ class VectorDCE : public MemPass {
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bool RewriteInstructions(ir::Function* function,
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const LiveComponentMap& live_components);
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// Rewrites the OpCompositeInsert instruction |current_inst| to avoid
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// unnecessary computes given that the only components of the result that are
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// live are |live_components|.
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//
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// If the value being inserted is not live, then the result of |current_inst|
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// is replaced by the composite input to |current_inst|.
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//
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// If the composite input to |current_inst| is not live, then it is replaced
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// by and OpUndef in |current_inst|.
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bool RewriteInsertInstruction(ir::Instruction* current_inst,
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const utils::BitVector& live_components);
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// Returns true if the result of |inst| is a vector or a scalar.
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bool HasVectorOrScalarResult(const ir::Instruction* inst) const;
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// Returns true if the result of |inst| is a scalar.
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bool HasVectorResult(const ir::Instruction* inst) const;
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// Returns true if the result of |inst| is a vector.
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bool HasScalarResult(const ir::Instruction* inst) const;
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bool HasVectorResult(const ir::Instruction* inst) const;
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// Adds |work_item| to |work_list| if it is not already live according to
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// |live_components|. |live_components| is updated to indicate that
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@ -130,13 +112,6 @@ class VectorDCE : public MemPass {
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LiveComponentMap* live_components,
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std::vector<WorkListItem>* work_list);
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// Marks the uses in the OpCompositeConstruct instruction |current_inst| as
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// live. If anything becomes live they are added to |work_list| and
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// |live_components| is updated accordingly.
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void MarkCompositeContructUsesAsLive(WorkListItem work_item,
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LiveComponentMap* live_components,
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std::vector<WorkListItem>* work_list);
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// A BitVector that can always be used to say that all components of a vector
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// are live.
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utils::BitVector all_components_live_;
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@ -561,6 +561,124 @@ OpFunctionEnd
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before_predefs + before, after_predefs + after, true, true);
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}
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TEST_F(DeadInsertElimTest, DeadInsertInCycleToDo) {
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// Dead insert in chain with cycle. Demonstrates analysis can handle
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// cycles in chains.
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//
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// TODO(greg-lunarg): Improve algorithm to remove dead insert into v.y. Will
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// likely require similar logic to ADCE.
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//
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// Note: The SPIR-V assembly has had store/load elimination
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// performed to allow the inserts and extracts to directly
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// reference each other.
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//
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// #version 450
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//
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// layout (location=0) in vec4 In0;
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// layout (location=1) in float In1;
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// layout (location=2) in float In2;
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// layout (location=0) out vec4 OutColor;
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//
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// layout(std140, binding = 0 ) uniform _Globals_
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// {
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// int g_n ;
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// };
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//
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// void main()
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// {
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// vec2 v = vec2(0.0, 1.0);
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// for (int i = 0; i < g_n; i++) {
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// v.x = v.x + 1;
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// v.y = v.y * 0.9; // dead
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// }
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// OutColor = vec4(v.x);
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// }
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const std::string assembly =
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R"(OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Fragment %main "main" %OutColor %In0 %In1 %In2
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OpExecutionMode %main OriginUpperLeft
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OpSource GLSL 450
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OpName %main "main"
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OpName %_Globals_ "_Globals_"
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OpMemberName %_Globals_ 0 "g_n"
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OpName %_ ""
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OpName %OutColor "OutColor"
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OpName %In0 "In0"
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OpName %In1 "In1"
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OpName %In2 "In2"
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OpMemberDecorate %_Globals_ 0 Offset 0
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OpDecorate %_Globals_ Block
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OpDecorate %_ DescriptorSet 0
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OpDecorate %_ Binding 0
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OpDecorate %OutColor Location 0
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OpDecorate %In0 Location 0
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OpDecorate %In1 Location 1
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OpDecorate %In2 Location 2
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%void = OpTypeVoid
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%10 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v2float = OpTypeVector %float 2
|
||||
%_ptr_Function_v2float = OpTypePointer Function %v2float
|
||||
%float_0 = OpConstant %float 0
|
||||
%float_1 = OpConstant %float 1
|
||||
%16 = OpConstantComposite %v2float %float_0 %float_1
|
||||
%int = OpTypeInt 32 1
|
||||
%_ptr_Function_int = OpTypePointer Function %int
|
||||
%int_0 = OpConstant %int 0
|
||||
%_Globals_ = OpTypeStruct %int
|
||||
%_ptr_Uniform__Globals_ = OpTypePointer Uniform %_Globals_
|
||||
%_ = OpVariable %_ptr_Uniform__Globals_ Uniform
|
||||
%_ptr_Uniform_int = OpTypePointer Uniform %int
|
||||
%bool = OpTypeBool
|
||||
%float_0_75 = OpConstant %float 0.75
|
||||
%int_1 = OpConstant %int 1
|
||||
%v4float = OpTypeVector %float 4
|
||||
%_ptr_Output_v4float = OpTypePointer Output %v4float
|
||||
%OutColor = OpVariable %_ptr_Output_v4float Output
|
||||
%_ptr_Input_v4float = OpTypePointer Input %v4float
|
||||
%In0 = OpVariable %_ptr_Input_v4float Input
|
||||
%_ptr_Input_float = OpTypePointer Input %float
|
||||
%In1 = OpVariable %_ptr_Input_float Input
|
||||
%In2 = OpVariable %_ptr_Input_float Input
|
||||
%main = OpFunction %void None %10
|
||||
%29 = OpLabel
|
||||
OpBranch %30
|
||||
%30 = OpLabel
|
||||
%31 = OpPhi %v2float %16 %29 %32 %33
|
||||
%34 = OpPhi %int %int_0 %29 %35 %33
|
||||
OpLoopMerge %36 %33 None
|
||||
OpBranch %37
|
||||
%37 = OpLabel
|
||||
%38 = OpAccessChain %_ptr_Uniform_int %_ %int_0
|
||||
%39 = OpLoad %int %38
|
||||
%40 = OpSLessThan %bool %34 %39
|
||||
OpBranchConditional %40 %41 %36
|
||||
%41 = OpLabel
|
||||
%42 = OpCompositeExtract %float %31 0
|
||||
%43 = OpFAdd %float %42 %float_1
|
||||
%44 = OpCompositeInsert %v2float %43 %31 0
|
||||
%45 = OpCompositeExtract %float %44 1
|
||||
%46 = OpFMul %float %45 %float_0_75
|
||||
%32 = OpCompositeInsert %v2float %46 %44 1
|
||||
OpBranch %33
|
||||
%33 = OpLabel
|
||||
%35 = OpIAdd %int %34 %int_1
|
||||
OpBranch %30
|
||||
%36 = OpLabel
|
||||
%47 = OpCompositeExtract %float %31 0
|
||||
%48 = OpCompositeConstruct %v4float %47 %47 %47 %47
|
||||
OpStore %OutColor %48
|
||||
OpReturn
|
||||
OpFunctionEnd
|
||||
)";
|
||||
|
||||
SinglePassRunAndCheck<opt::DeadInsertElimPass>(assembly, assembly, true,
|
||||
true);
|
||||
}
|
||||
|
||||
// TODO(greg-lunarg): Add tests to verify handling of these cases:
|
||||
//
|
||||
|
||||
|
||||
@ -354,225 +354,13 @@ OpFunctionEnd
|
||||
after_predefs + after, true, true);
|
||||
}
|
||||
|
||||
TEST_F(VectorDCETest, DeadInsertWithScalars) {
|
||||
// Dead insert which requires two passes to eliminate
|
||||
//
|
||||
// Note: The SPIR-V assembly has had store/load elimination
|
||||
// performed to allow the inserts and extracts to directly
|
||||
// reference each other.
|
||||
//
|
||||
// #version 450
|
||||
//
|
||||
// layout (location=0) in vec4 In0;
|
||||
// layout (location=1) in float In1;
|
||||
// layout (location=2) in float In2;
|
||||
// layout (location=0) out vec4 OutColor;
|
||||
//
|
||||
// layout(std140, binding = 0 ) uniform _Globals_
|
||||
// {
|
||||
// bool g_b;
|
||||
// bool g_b2;
|
||||
// };
|
||||
//
|
||||
// void main()
|
||||
// {
|
||||
// vec4 v1, v2;
|
||||
// v1 = In0;
|
||||
// v1.y = In1 + In2; // dead, second pass
|
||||
// if (g_b) v1.x = 1.0;
|
||||
// v2.x = v1.x;
|
||||
// v2.y = v1.y; // dead, first pass
|
||||
// if (g_b2) v2.x = 0.0;
|
||||
// OutColor = vec4(v2.x,v2.x,0.0,1.0);
|
||||
// }
|
||||
|
||||
const std::string before_predefs =
|
||||
R"(OpCapability Shader
|
||||
%1 = OpExtInstImport "GLSL.std.450"
|
||||
OpMemoryModel Logical GLSL450
|
||||
OpEntryPoint Fragment %main "main" %In0 %In1 %In2 %OutColor
|
||||
OpExecutionMode %main OriginUpperLeft
|
||||
OpSource GLSL 450
|
||||
OpName %main "main"
|
||||
OpName %In0 "In0"
|
||||
OpName %In1 "In1"
|
||||
OpName %In2 "In2"
|
||||
OpName %_Globals_ "_Globals_"
|
||||
OpMemberName %_Globals_ 0 "g_b"
|
||||
OpMemberName %_Globals_ 1 "g_b2"
|
||||
OpName %_ ""
|
||||
OpName %OutColor "OutColor"
|
||||
OpDecorate %In0 Location 0
|
||||
OpDecorate %In1 Location 1
|
||||
OpDecorate %In2 Location 2
|
||||
OpMemberDecorate %_Globals_ 0 Offset 0
|
||||
OpMemberDecorate %_Globals_ 1 Offset 4
|
||||
OpDecorate %_Globals_ Block
|
||||
OpDecorate %_ DescriptorSet 0
|
||||
OpDecorate %_ Binding 0
|
||||
OpDecorate %OutColor Location 0
|
||||
%void = OpTypeVoid
|
||||
%10 = OpTypeFunction %void
|
||||
%float = OpTypeFloat 32
|
||||
%v4float = OpTypeVector %float 4
|
||||
%_ptr_Function_v4float = OpTypePointer Function %v4float
|
||||
%_ptr_Input_v4float = OpTypePointer Input %v4float
|
||||
%In0 = OpVariable %_ptr_Input_v4float Input
|
||||
%_ptr_Input_float = OpTypePointer Input %float
|
||||
%In1 = OpVariable %_ptr_Input_float Input
|
||||
%In2 = OpVariable %_ptr_Input_float Input
|
||||
%uint = OpTypeInt 32 0
|
||||
%_Globals_ = OpTypeStruct %uint %uint
|
||||
%_ptr_Uniform__Globals_ = OpTypePointer Uniform %_Globals_
|
||||
%_ = OpVariable %_ptr_Uniform__Globals_ Uniform
|
||||
%int = OpTypeInt 32 1
|
||||
%int_0 = OpConstant %int 0
|
||||
%_ptr_Uniform_uint = OpTypePointer Uniform %uint
|
||||
%bool = OpTypeBool
|
||||
%uint_0 = OpConstant %uint 0
|
||||
%float_1 = OpConstant %float 1
|
||||
%int_1 = OpConstant %int 1
|
||||
%float_0 = OpConstant %float 0
|
||||
%_ptr_Output_v4float = OpTypePointer Output %v4float
|
||||
%OutColor = OpVariable %_ptr_Output_v4float Output
|
||||
%27 = OpUndef %v4float
|
||||
)";
|
||||
|
||||
const std::string after_predefs =
|
||||
R"(OpCapability Shader
|
||||
%1 = OpExtInstImport "GLSL.std.450"
|
||||
OpMemoryModel Logical GLSL450
|
||||
OpEntryPoint Fragment %main "main" %In0 %In1 %In2 %OutColor
|
||||
OpExecutionMode %main OriginUpperLeft
|
||||
OpSource GLSL 450
|
||||
OpName %main "main"
|
||||
OpName %In0 "In0"
|
||||
OpName %In1 "In1"
|
||||
OpName %In2 "In2"
|
||||
OpName %_Globals_ "_Globals_"
|
||||
OpMemberName %_Globals_ 0 "g_b"
|
||||
OpMemberName %_Globals_ 1 "g_b2"
|
||||
OpName %_ ""
|
||||
OpName %OutColor "OutColor"
|
||||
OpDecorate %In0 Location 0
|
||||
OpDecorate %In1 Location 1
|
||||
OpDecorate %In2 Location 2
|
||||
OpMemberDecorate %_Globals_ 0 Offset 0
|
||||
OpMemberDecorate %_Globals_ 1 Offset 4
|
||||
OpDecorate %_Globals_ Block
|
||||
OpDecorate %_ DescriptorSet 0
|
||||
OpDecorate %_ Binding 0
|
||||
OpDecorate %OutColor Location 0
|
||||
%void = OpTypeVoid
|
||||
%10 = OpTypeFunction %void
|
||||
%float = OpTypeFloat 32
|
||||
%v4float = OpTypeVector %float 4
|
||||
%_ptr_Function_v4float = OpTypePointer Function %v4float
|
||||
%_ptr_Input_v4float = OpTypePointer Input %v4float
|
||||
%In0 = OpVariable %_ptr_Input_v4float Input
|
||||
%_ptr_Input_float = OpTypePointer Input %float
|
||||
%In1 = OpVariable %_ptr_Input_float Input
|
||||
%In2 = OpVariable %_ptr_Input_float Input
|
||||
%uint = OpTypeInt 32 0
|
||||
%_Globals_ = OpTypeStruct %uint %uint
|
||||
%_ptr_Uniform__Globals_ = OpTypePointer Uniform %_Globals_
|
||||
%_ = OpVariable %_ptr_Uniform__Globals_ Uniform
|
||||
%int = OpTypeInt 32 1
|
||||
%int_0 = OpConstant %int 0
|
||||
%_ptr_Uniform_uint = OpTypePointer Uniform %uint
|
||||
%bool = OpTypeBool
|
||||
%uint_0 = OpConstant %uint 0
|
||||
%float_1 = OpConstant %float 1
|
||||
%int_1 = OpConstant %int 1
|
||||
%float_0 = OpConstant %float 0
|
||||
%_ptr_Output_v4float = OpTypePointer Output %v4float
|
||||
%OutColor = OpVariable %_ptr_Output_v4float Output
|
||||
%27 = OpUndef %v4float
|
||||
)";
|
||||
|
||||
const std::string before =
|
||||
R"(%main = OpFunction %void None %10
|
||||
%28 = OpLabel
|
||||
%29 = OpLoad %v4float %In0
|
||||
%30 = OpLoad %float %In1
|
||||
%31 = OpLoad %float %In2
|
||||
%32 = OpFAdd %float %30 %31
|
||||
%33 = OpCompositeInsert %v4float %32 %29 1
|
||||
%34 = OpAccessChain %_ptr_Uniform_uint %_ %int_0
|
||||
%35 = OpLoad %uint %34
|
||||
%36 = OpINotEqual %bool %35 %uint_0
|
||||
OpSelectionMerge %37 None
|
||||
OpBranchConditional %36 %38 %37
|
||||
%38 = OpLabel
|
||||
%39 = OpCompositeInsert %v4float %float_1 %33 0
|
||||
OpBranch %37
|
||||
%37 = OpLabel
|
||||
%40 = OpPhi %v4float %33 %28 %39 %38
|
||||
%41 = OpCompositeExtract %float %40 0
|
||||
%42 = OpCompositeInsert %v4float %41 %27 0
|
||||
%43 = OpCompositeExtract %float %40 1
|
||||
%44 = OpCompositeInsert %v4float %43 %42 1
|
||||
%45 = OpAccessChain %_ptr_Uniform_uint %_ %int_1
|
||||
%46 = OpLoad %uint %45
|
||||
%47 = OpINotEqual %bool %46 %uint_0
|
||||
OpSelectionMerge %48 None
|
||||
OpBranchConditional %47 %49 %48
|
||||
%49 = OpLabel
|
||||
%50 = OpCompositeInsert %v4float %float_0 %44 0
|
||||
OpBranch %48
|
||||
%48 = OpLabel
|
||||
%51 = OpPhi %v4float %44 %37 %50 %49
|
||||
%52 = OpCompositeExtract %float %51 0
|
||||
%53 = OpCompositeExtract %float %51 0
|
||||
%54 = OpCompositeConstruct %v4float %52 %53 %float_0 %float_1
|
||||
OpStore %OutColor %54
|
||||
OpReturn
|
||||
OpFunctionEnd
|
||||
)";
|
||||
|
||||
const std::string after =
|
||||
R"(%main = OpFunction %void None %10
|
||||
%28 = OpLabel
|
||||
%29 = OpLoad %v4float %In0
|
||||
%34 = OpAccessChain %_ptr_Uniform_uint %_ %int_0
|
||||
%35 = OpLoad %uint %34
|
||||
%36 = OpINotEqual %bool %35 %uint_0
|
||||
OpSelectionMerge %37 None
|
||||
OpBranchConditional %36 %38 %37
|
||||
%38 = OpLabel
|
||||
%39 = OpCompositeInsert %v4float %float_1 %29 0
|
||||
OpBranch %37
|
||||
%37 = OpLabel
|
||||
%40 = OpPhi %v4float %29 %28 %39 %38
|
||||
%41 = OpCompositeExtract %float %40 0
|
||||
%42 = OpCompositeInsert %v4float %41 %27 0
|
||||
%45 = OpAccessChain %_ptr_Uniform_uint %_ %int_1
|
||||
%46 = OpLoad %uint %45
|
||||
%47 = OpINotEqual %bool %46 %uint_0
|
||||
OpSelectionMerge %48 None
|
||||
OpBranchConditional %47 %49 %48
|
||||
%49 = OpLabel
|
||||
%50 = OpCompositeInsert %v4float %float_0 %42 0
|
||||
OpBranch %48
|
||||
%48 = OpLabel
|
||||
%51 = OpPhi %v4float %42 %37 %50 %49
|
||||
%52 = OpCompositeExtract %float %51 0
|
||||
%53 = OpCompositeExtract %float %51 0
|
||||
%54 = OpCompositeConstruct %v4float %52 %53 %float_0 %float_1
|
||||
OpStore %OutColor %54
|
||||
OpReturn
|
||||
OpFunctionEnd
|
||||
)";
|
||||
|
||||
SinglePassRunAndCheck<opt::DeadInsertElimPass>(
|
||||
before_predefs + before, after_predefs + after, true, true);
|
||||
}
|
||||
|
||||
#ifdef SPIRV_EFFCEE
|
||||
TEST_F(VectorDCETest, DeadInsertInCycle) {
|
||||
TEST_F(VectorDCETest, DeadInsertInCycleToDo) {
|
||||
// Dead insert in chain with cycle. Demonstrates analysis can handle
|
||||
// cycles in chains going through scalars intermediate values.
|
||||
//
|
||||
// TODO: Improve algorithm to remove dead insert into v.y. Need to treat
|
||||
// scalars at if they are vectors with a single element.
|
||||
//
|
||||
// Note: The SPIR-V assembly has had store/load elimination
|
||||
// performed to allow the inserts and extracts to directly
|
||||
// reference each other.
|
||||
@ -600,15 +388,7 @@ TEST_F(VectorDCETest, DeadInsertInCycle) {
|
||||
// }
|
||||
|
||||
const std::string assembly =
|
||||
R"(
|
||||
; CHECK: [[init_val:%\w+]] = OpConstantComposite %v2float %float_0 %float_1
|
||||
; CHECK: [[undef:%\w+]] = OpUndef %v2float
|
||||
; CHECK: OpFunction
|
||||
; CHECK: [[entry_lab:%\w+]] = OpLabel
|
||||
; CHECK: [[loop_header:%\w+]] = OpLabel
|
||||
; CHECK: OpPhi %v2float [[init_val]] [[entry_lab]] [[x_insert:%\w+]] {{%\w+}}
|
||||
; CHECK: [[x_insert:%\w+]] = OpCompositeInsert %v2float %43 [[undef]] 0
|
||||
OpCapability Shader
|
||||
R"(OpCapability Shader
|
||||
%1 = OpExtInstImport "GLSL.std.450"
|
||||
OpMemoryModel Logical GLSL450
|
||||
OpEntryPoint Fragment %main "main" %OutColor %In0 %In1 %In2
|
||||
@ -688,7 +468,7 @@ OpReturn
|
||||
OpFunctionEnd
|
||||
)";
|
||||
|
||||
SinglePassRunAndMatch<opt::VectorDCE>(assembly, true);
|
||||
SinglePassRunAndCheck<opt::VectorDCE>(assembly, assembly, true, true);
|
||||
}
|
||||
|
||||
TEST_F(VectorDCETest, DeadLoadFeedingCompositeConstruct) {
|
||||
@ -696,12 +476,7 @@ TEST_F(VectorDCETest, DeadLoadFeedingCompositeConstruct) {
|
||||
// TODO: Implement the rewrite for CompositeConstruct.
|
||||
|
||||
const std::string assembly =
|
||||
R"(
|
||||
; CHECK: [[undef:%\w+]] = OpUndef %float
|
||||
; CHECK: [[ac:%\w+]] = OpAccessChain %_ptr_Input_float %In0 %uint_2
|
||||
; CHECK: [[load:%\w+]] = OpLoad %float [[ac]]
|
||||
; CHECK: OpCompositeConstruct %v3float [[load]] [[undef]] [[undef]]
|
||||
OpCapability Shader
|
||||
R"(OpCapability Shader
|
||||
%1 = OpExtInstImport "GLSL.std.450"
|
||||
OpMemoryModel Logical GLSL450
|
||||
OpEntryPoint Fragment %main "main" %In0 %OutColor
|
||||
@ -769,9 +544,10 @@ OpReturn
|
||||
OpFunctionEnd
|
||||
)";
|
||||
|
||||
SinglePassRunAndMatch<opt::VectorDCE>(assembly, true);
|
||||
SinglePassRunAndCheck<opt::VectorDCE>(assembly, assembly, true, true);
|
||||
}
|
||||
|
||||
#ifdef SPIRV_EFFCEE
|
||||
TEST_F(VectorDCETest, DeadLoadFeedingVectorShuffle) {
|
||||
// Detach the loads feeding the CompositeConstruct for the unused elements.
|
||||
// TODO: Implement the rewrite for CompositeConstruct.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user