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shader: Fix branches to visited virtual blocks

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This commit is contained in:
ReinUsesLisp 2021-04-02 01:17:47 -03:00 committed by ameerj
parent d0a529683a
commit b4a5e767d0
2 changed files with 12 additions and 0 deletions
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2
src/shader_recompiler/backend/spirv/emit_spirv.cpp
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@ -56,6 +56,8 @@ ArgType Arg(EmitContext& ctx, const IR::Value& arg) {
return arg.Label();
} else if constexpr (std::is_same_v<ArgType, IR::Attribute>) {
return arg.Attribute();
} else if constexpr (std::is_same_v<ArgType, IR::Reg>) {
return arg.Reg();
}
}

10
src/shader_recompiler/frontend/maxwell/control_flow.cpp
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@ -486,6 +486,16 @@ Block* CFG::AddLabel(Block* block, Stack stack, Location pc, FunctionId function
}
if (const auto it{function.blocks.find(pc, Compare{})}; it != function.blocks.end()) {
// Block already exists and it has been visited
if (function.blocks.begin() != it) {
// Check if the previous node is the virtual variant of the label
// This won't exist if a virtual node is not needed or it hasn't been visited
// If it hasn't been visited and a virtual node is needed, this will still behave as
// expected because the node impersonated with its virtual node.
const auto prev{std::prev(it)};
if (it->begin.Virtual() == prev->begin) {
return &*prev;
}
}
return &*it;
}
Block* const new_block{block_pool.Create(Block{