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vk_pipeline_cache: Avoid recompiling new shaders on each new PL (#480)

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* cfg: Add one more divergence case

* Seen in RDR shaders

* renderer_vulkan: Reduce number of compiled shaders

* vk_pipeline_cache: Remove some unnecessary checks
This commit is contained in:
TheTurtle 2024-08-21 02:00:24 +03:00 • committed by GitHub
parent 32cb3649d3
commit 3f9c86ad33
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GPG key ID: B5690EEEBB952194
10 changed files with 125 additions and 86 deletions
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5
src/shader_recompiler/frontend/control_flow_graph.cpp
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@ -37,6 +37,7 @@ static IR::Condition MakeCondition(Opcode opcode) {
return IR::Condition::Execnz;
case Opcode::S_AND_SAVEEXEC_B64:
case Opcode::S_ANDN2_B64:
case Opcode::V_CMPX_NE_U32:
return IR::Condition::Execnz;
default:
return IR::Condition::True;
@ -93,7 +94,7 @@ void CFG::EmitDivergenceLabels() {
// While this instruction does not save EXEC it is often used paired
// with SAVEEXEC to mask the threads that didn't pass the condition
// of initial branch.
inst.opcode == Opcode::S_ANDN2_B64;
inst.opcode == Opcode::S_ANDN2_B64 || inst.opcode == Opcode::V_CMPX_NE_U32;
};
const auto is_close_scope = [](const GcnInst& inst) {
// Closing an EXEC scope can be either a branch instruction
@ -187,7 +188,7 @@ void CFG::LinkBlocks() {
const auto end_inst{block.end_inst};
// Handle divergence block inserted here.
if (end_inst.opcode == Opcode::S_AND_SAVEEXEC_B64 ||
end_inst.opcode == Opcode::S_ANDN2_B64) {
end_inst.opcode == Opcode::S_ANDN2_B64 || end_inst.opcode == Opcode::V_CMPX_NE_U32) {
// Blocks are stored ordered by address in the set
auto next_it = std::next(it);
auto* target_block = &(*next_it);