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| author | ReinUsesLisp <reinuseslisp@airmail.cc> | 2021-02-11 16:39:06 -0300 |
|---|---|---|
| committer | ameerj <52414509+ameerj@users.noreply.github.com> | 2021-07-22 21:51:22 -0400 |
| commit | 9170200a11715d131645d1ffb92e86e6ef0d7e88 (patch) | |
| tree | 6c6f84c38a9b59d023ecb09c0737ea56da166b64 /src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp | |
| parent | 2930dccecc933d6748772e9f51a5724fe1e6771b (diff) | |
shader: Initial implementation of an AST
Diffstat (limited to 'src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp')
| -rw-r--r-- | src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp b/src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp index 15a9db90a9..8ca996e935 100644 --- a/src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp +++ b/src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp @@ -34,6 +34,13 @@ struct SignFlagTag : FlagTag {}; struct CarryFlagTag : FlagTag {}; struct OverflowFlagTag : FlagTag {}; +struct GotoVariable : FlagTag { + GotoVariable() = default; + explicit GotoVariable(u32 index_) : index{index_} {} + + u32 index; +}; + struct DefTable { [[nodiscard]] ValueMap& operator[](IR::Reg variable) noexcept { return regs[IR::RegIndex(variable)]; @@ -43,6 +50,10 @@ struct DefTable { return preds[IR::PredIndex(variable)]; } + [[nodiscard]] ValueMap& operator[](GotoVariable goto_variable) { + return goto_vars[goto_variable.index]; + } + [[nodiscard]] ValueMap& operator[](ZeroFlagTag) noexcept { return zero_flag; } @@ -61,6 +72,7 @@ struct DefTable { std::array<ValueMap, IR::NUM_USER_REGS> regs; std::array<ValueMap, IR::NUM_USER_PREDS> preds; + boost::container::flat_map<u32, ValueMap> goto_vars; ValueMap zero_flag; ValueMap sign_flag; ValueMap carry_flag; @@ -68,15 +80,15 @@ struct DefTable { }; IR::Opcode UndefOpcode(IR::Reg) noexcept { - return IR::Opcode::Undef32; + return IR::Opcode::UndefU32; } IR::Opcode UndefOpcode(IR::Pred) noexcept { - return IR::Opcode::Undef1; + return IR::Opcode::UndefU1; } IR::Opcode UndefOpcode(const FlagTag&) noexcept { - return IR::Opcode::Undef1; + return IR::Opcode::UndefU1; } [[nodiscard]] bool IsPhi(const IR::Inst& inst) noexcept { @@ -165,6 +177,9 @@ void SsaRewritePass(IR::Function& function) { pass.WriteVariable(pred, block, inst.Arg(1)); } break; + case IR::Opcode::SetGotoVariable: + pass.WriteVariable(GotoVariable{inst.Arg(0).U32()}, block, inst.Arg(1)); + break; case IR::Opcode::SetZFlag: pass.WriteVariable(ZeroFlagTag{}, block, inst.Arg(0)); break; @@ -187,6 +202,9 @@ void SsaRewritePass(IR::Function& function) { inst.ReplaceUsesWith(pass.ReadVariable(pred, block)); } break; + case IR::Opcode::GetGotoVariable: + inst.ReplaceUsesWith(pass.ReadVariable(GotoVariable{inst.Arg(0).U32()}, block)); + break; case IR::Opcode::GetZFlag: inst.ReplaceUsesWith(pass.ReadVariable(ZeroFlagTag{}, block)); break; |