diff options
| author | ReinUsesLisp <reinuseslisp@airmail.cc> | 2021-02-24 18:31:32 -0300 |
|---|---|---|
| committer | ameerj <52414509+ameerj@users.noreply.github.com> | 2021-07-22 21:51:22 -0400 |
| commit | 7496bbf7584049fb9c99cf705e9cc16aee61a55a (patch) | |
| tree | 8aeb8a37fa2efda20e05238041c1d54dae073949 /src/shader_recompiler/backend/spirv/emit_spirv.cpp | |
| parent | e87a502da2d5a8356a639d53c0a16a77890de4c7 (diff) | |
spirv: Add support for self-referencing phi nodes
Diffstat (limited to 'src/shader_recompiler/backend/spirv/emit_spirv.cpp')
| -rw-r--r-- | src/shader_recompiler/backend/spirv/emit_spirv.cpp | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/src/shader_recompiler/backend/spirv/emit_spirv.cpp b/src/shader_recompiler/backend/spirv/emit_spirv.cpp index f3aca90d06..bcd6bda28b 100644 --- a/src/shader_recompiler/backend/spirv/emit_spirv.cpp +++ b/src/shader_recompiler/backend/spirv/emit_spirv.cpp @@ -217,9 +217,16 @@ Id EmitPhi(EmitContext& ctx, IR::Inst* inst) { IR::Inst* const arg_inst{arg.Inst()}; def = arg_inst->Definition<Id>(); if (!Sirit::ValidId(def)) { - // If it hasn't been defined, get a forward declaration - def = ctx.ForwardDeclarationId(); - arg_inst->SetDefinition<Id>(def); + if (arg_inst == inst) { + // This is a self referencing phi node + def = ctx.CurrentId(); + // Self-referencing definition will be set by the caller + } else { + // If it hasn't been defined and it's not a self reference, + // get a forward declaration + def = ctx.ForwardDeclarationId(); + arg_inst->SetDefinition<Id>(def); + } } } IR::Block* const phi_block{inst->PhiBlock(index)}; |