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| author | ameerj <52414509+ameerj@users.noreply.github.com> | 2021-08-25 14:26:49 -0400 |
|---|---|---|
| committer | ameerj <52414509+ameerj@users.noreply.github.com> | 2021-08-30 11:46:25 -0400 |
| commit | 907dfbea71bbfd92290d1eff1d2f0f7a33b32dc1 (patch) | |
| tree | 03d206644462b28e726a66a52ff17df41f96598b /src/shader_recompiler/frontend/maxwell/structured_control_flow.cpp | |
| parent | 4fda7f1c821e1000210b1dfdf1074795b1aa9d96 (diff) | |
structured_control_flow: Skip reordering nested demote branches.
Nested demote branches add complexity with combining the condition if it has not been initialized yet. Skip them for the time being.
Diffstat (limited to 'src/shader_recompiler/frontend/maxwell/structured_control_flow.cpp')
| -rw-r--r-- | src/shader_recompiler/frontend/maxwell/structured_control_flow.cpp | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/shader_recompiler/frontend/maxwell/structured_control_flow.cpp b/src/shader_recompiler/frontend/maxwell/structured_control_flow.cpp index 77d1cd0fc3..69eeaa3e6a 100644 --- a/src/shader_recompiler/frontend/maxwell/structured_control_flow.cpp +++ b/src/shader_recompiler/frontend/maxwell/structured_control_flow.cpp @@ -872,10 +872,21 @@ private: std::vector<IR::Block*> demote_blocks; std::vector<IR::U1> demote_conds; u32 num_epilogues{}; + u32 branch_depth{}; for (const IR::AbstractSyntaxNode& node : syntax_list) { + if (node.type == Type::If) { + ++branch_depth; + } + if (node.type == Type::EndIf) { + --branch_depth; + } if (node.type != Type::Block) { continue; } + if (branch_depth > 1) { + // Skip reordering nested demote branches. + continue; + } for (const IR::Inst& inst : node.data.block->Instructions()) { const IR::Opcode op{inst.GetOpcode()}; if (op == IR::Opcode::DemoteToHelperInvocation) { |