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| author | FernandoS27 <fsahmkow27@gmail.com> | 2021-03-24 23:41:55 +0100 |
|---|---|---|
| committer | ameerj <52414509+ameerj@users.noreply.github.com> | 2021-07-22 21:51:24 -0400 |
| commit | c7c518e280d1ac04adb08d45145690fd06ac7b18 (patch) | |
| tree | 1bce4c12238600828bef6bdf0c92da6f69c054b1 /src/shader_recompiler/ir_opt/constant_propagation_pass.cpp | |
| parent | 32c5483beb2f79f5d55eb2906f2bfdfa1698bca3 (diff) | |
shader: Implement TLD4 and TLD4_B
Diffstat (limited to 'src/shader_recompiler/ir_opt/constant_propagation_pass.cpp')
| -rw-r--r-- | src/shader_recompiler/ir_opt/constant_propagation_pass.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp b/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp index 3dab424f60..28060dccfa 100644 --- a/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp +++ b/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp @@ -403,6 +403,18 @@ void ConstantPropagation(IR::Block& block, IR::Inst& inst) { return (base >> shift) & ((1U << count) - 1); }); return; + case IR::Opcode::BitFieldSExtract: + FoldWhenAllImmediates(inst, [](s32 base, u32 shift, u32 count) { + const size_t back_shift = static_cast<size_t>(shift) + static_cast<size_t>(count); + if (back_shift > Common::BitSize<s32>()) { + throw LogicError("Undefined result in {}({}, {}, {})", IR::Opcode::BitFieldSExtract, + base, shift, count); + } + const size_t left_shift = Common::BitSize<s32>() - back_shift; + return static_cast<u32>(static_cast<s32>(base << left_shift) >> + static_cast<size_t>(Common::BitSize<s32>() - count)); + }); + return; case IR::Opcode::BranchConditional: return FoldBranchConditional(inst); default: |