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shader: factor live execution guards before resource planning

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This commit is contained in:
nmzik
2026-10-13 01:03:46 +02:00
parent 2f88a0a3b2
commit c9ec82e32e
4 changed files with 65 additions and 17 deletions
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src/graphics/shader/recompiler/ShaderRecompiler.cpp
+9 -8
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@@ -789,19 +789,20 @@ TranslateResult TranslateProgram(const Decoder::Program& decoded, const CompileO
GetDumpLabel(options), StageName(options.stage), options.shader_hash,
static_cast<uint64_t>(ir.blocks.size()), phase_ms());
IR::RewriteToSsa(ir.blocks);
IR::ConstantPropagationPass(ir.blocks, ir.wave_size);
IR::ResolveControlFlowIdentities(ir);
IR::RemoveIdentities(ir.blocks);
IR::EliminateDeadCode(ir.blocks);
const auto read_lane_stats = IR::EliminateReadLane(ir, ir.wave_size);
if (read_lane_stats.rewritten_reads != 0) {
LOGF("%s read-lane elimination: reads=%" PRIu32 "\n", GetDumpLabel(options),
read_lane_stats.rewritten_reads);
const auto simplify = [&ir] {
IR::ConstantPropagationPass(ir.blocks, ir.wave_size);
IR::ResolveControlFlowIdentities(ir);
IR::RemoveIdentities(ir.blocks);
IR::EliminateDeadCode(ir.blocks);
};
simplify();
const auto read_lane_stats = IR::EliminateReadLane(ir, ir.wave_size);
if (read_lane_stats.rewritten_reads != 0) {
LOGF("%s read-lane elimination: reads=%" PRIu32 "\n", GetDumpLabel(options),
read_lane_stats.rewritten_reads);
}
// Cleanup also exposes profitable folds by removing dead predicate consumers.
simplify();
if (decoded.has_swap_pc) {
// Leaf returns are resolved CFG edges; native PC values must not escape into GPU data.
for (const auto* block: ir.blocks)