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Structure early returns with shared loop continuations

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nmzik committed 2026-09-16 22:33:19 +04:00
1 parent 8589731a27
commit fb94a819c7
2 files changed
+53 -5
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src/graphics/shader/recompiler/frontend/cfg/ShaderCFG.cpp
+4 -5
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@@ -1206,13 +1206,12 @@ uint32_t FindSelectionMerge(const Graph& graph, const BasicBlock& block) {
return false_target;
}
// A return can leave a selection without reaching its merge. Keep the
// continuing arm as the merge instead of joining live state with a return.
if (graph.Dominates(block.id, false_target) &&
HasLinearPathToTerminal(graph, true_target)) {
// continuing arm as the merge. Shared continuations receive a dedicated
// gateway in SplitSharedMergeBlock before structured control is emitted.
if (HasLinearPathToTerminal(graph, true_target)) {
return false_target;
}
if (graph.Dominates(block.id, true_target) &&
HasLinearPathToTerminal(graph, false_target)) {
if (HasLinearPathToTerminal(graph, false_target)) {
return true_target;
}
}