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authorFernandoS27 <fsahmkow27@gmail.com>2021-04-18 19:10:55 +0200
committerameerj <52414509+ameerj@users.noreply.github.com>2021-07-23 03:51:29 +0200
commitda936d6ad8cef5418b7644754ee4bcbf7f6125f8 (patch)
tree63cb827cfcf4a315287d4c32842f681f378da2e4
parentvk_graphics_pipeline: Fix texture buffer descriptors (diff)
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-rw-r--r--src/shader_recompiler/frontend/maxwell/control_flow.cpp41
-rw-r--r--src/shader_recompiler/frontend/maxwell/control_flow.h9
2 files changed, 47 insertions, 3 deletions
diff --git a/src/shader_recompiler/frontend/maxwell/control_flow.cpp b/src/shader_recompiler/frontend/maxwell/control_flow.cpp
index 9811183f1..298faa03e 100644
--- a/src/shader_recompiler/frontend/maxwell/control_flow.cpp
+++ b/src/shader_recompiler/frontend/maxwell/control_flow.cpp
@@ -185,8 +185,20 @@ Function::Function(ObjectPool<Block>& block_pool, Location start_address)
label.block->branch_false = nullptr;
}
-CFG::CFG(Environment& env_, ObjectPool<Block>& block_pool_, Location start_address)
- : env{env_}, block_pool{block_pool_}, program_start{start_address} {
+CFG::CFG(Environment& env_, ObjectPool<Block>& block_pool_, Location start_address,
+ bool exits_to_dispatcher_)
+ : env{env_}, block_pool{block_pool_}, program_start{start_address}, exits_to_dispatcher{
+ exits_to_dispatcher_} {
+ if (exits_to_dispatcher) {
+ dispatch_block = block_pool.Create(Block{});
+ dispatch_block->begin = {};
+ dispatch_block->end = {};
+ dispatch_block->end_class = EndClass::Exit;
+ dispatch_block->cond = IR::Condition(true);
+ dispatch_block->stack = {};
+ dispatch_block->branch_true = nullptr;
+ dispatch_block->branch_false = nullptr;
+ }
functions.emplace_back(block_pool, start_address);
for (FunctionId function_id = 0; function_id < functions.size(); ++function_id) {
while (!functions[function_id].labels.empty()) {
@@ -196,6 +208,12 @@ CFG::CFG(Environment& env_, ObjectPool<Block>& block_pool_, Location start_addre
AnalyzeLabel(function_id, label);
}
}
+ if (exits_to_dispatcher) {
+ const auto it = functions[0].blocks.rbegin();
+ dispatch_block->begin = it->end + 1;
+ dispatch_block->end = it->end + 1;
+ functions[0].blocks.insert(*dispatch_block);
+ }
}
void CFG::AnalyzeLabel(FunctionId function_id, Label& label) {
@@ -462,11 +480,22 @@ CFG::AnalysisState CFG::AnalyzeEXIT(Block* block, FunctionId function_id, Locati
// EXIT will never be taken
return AnalysisState::Continue;
}
+ if (exits_to_dispatcher && function_id != 0) {
+ throw NotImplementedException("Dispatch EXIT on external function.");
+ }
if (pred != Predicate{true} || flow_test != IR::FlowTest::T) {
if (block->stack.Peek(Token::PEXIT).has_value()) {
throw NotImplementedException("Conditional EXIT with PEXIT token");
}
const IR::Condition cond{flow_test, static_cast<IR::Pred>(pred.index), pred.negated};
+ if (exits_to_dispatcher) {
+ block->end = pc;
+ block->branch_true = dispatch_block;
+ block->end_class = EndClass::Branch;
+ block->cond = cond;
+ block->branch_false = AddLabel(block, block->stack, pc + 1, function_id);
+ return AnalysisState::Branch;
+ }
AnalyzeCondInst(block, function_id, pc, EndClass::Exit, cond);
return AnalysisState::Branch;
}
@@ -477,6 +506,14 @@ CFG::AnalysisState CFG::AnalyzeEXIT(Block* block, FunctionId function_id, Locati
block->branch_false = nullptr;
return AnalysisState::Branch;
}
+ if (exits_to_dispatcher) {
+ block->cond = IR::Condition{true};
+ block->end = pc;
+ block->end_class = EndClass::Branch;
+ block->branch_true = dispatch_block;
+ block->branch_false = nullptr;
+ return AnalysisState::Branch;
+ }
block->end = pc + 1;
block->end_class = EndClass::Exit;
return AnalysisState::Branch;
diff --git a/src/shader_recompiler/frontend/maxwell/control_flow.h b/src/shader_recompiler/frontend/maxwell/control_flow.h
index 89966b16a..0e515c3b6 100644
--- a/src/shader_recompiler/frontend/maxwell/control_flow.h
+++ b/src/shader_recompiler/frontend/maxwell/control_flow.h
@@ -111,7 +111,8 @@ class CFG {
};
public:
- explicit CFG(Environment& env, ObjectPool<Block>& block_pool, Location start_address);
+ explicit CFG(Environment& env, ObjectPool<Block>& block_pool, Location start_address,
+ bool exits_to_dispatcher = false);
CFG& operator=(const CFG&) = delete;
CFG(const CFG&) = delete;
@@ -128,6 +129,10 @@ public:
return std::span(functions.data(), functions.size());
}
+ [[nodiscard]] bool ExitsToDispatcher() const {
+ return exits_to_dispatcher;
+ }
+
private:
void AnalyzeLabel(FunctionId function_id, Label& label);
@@ -158,6 +163,8 @@ private:
boost::container::small_vector<Function, 1> functions;
FunctionId current_function_id{0};
Location program_start;
+ bool exits_to_dispatcher{};
+ Block* dispatch_block{};
};
} // namespace Shader::Maxwell::Flow