From 09fb41dc63eeda3a82580f119704e691ead9e76a Mon Sep 17 00:00:00 2001 From: ReinUsesLisp Date: Mon, 26 Jul 2021 04:15:23 -0300 Subject: shader: Use TryInstRecursive on XMAD multiply folding Simplify a bit the logic. --- .../ir_opt/constant_propagation_pass.cpp | 26 ++++++++++------------ 1 file changed, 12 insertions(+), 14 deletions(-) (limited to 'src') diff --git a/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp b/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp index 8dd6d6c2c..08a06da02 100644 --- a/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp +++ b/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp @@ -116,33 +116,31 @@ bool FoldXmadMultiply(IR::Block& block, IR::Inst& inst) { * * This optimization has been proven safe by LLVM and MSVC. */ - const IR::Value lhs_arg{inst.Arg(0)}; - const IR::Value rhs_arg{inst.Arg(1)}; - if (lhs_arg.IsImmediate() || rhs_arg.IsImmediate()) { + IR::Inst* const lhs_shl{inst.Arg(0).TryInstRecursive()}; + IR::Inst* const rhs_mul{inst.Arg(1).TryInstRecursive()}; + if (!lhs_shl || !rhs_mul) { return false; } - IR::Inst* const lhs_shl{lhs_arg.InstRecursive()}; if (lhs_shl->GetOpcode() != IR::Opcode::ShiftLeftLogical32 || lhs_shl->Arg(1) != IR::Value{16U}) { return false; } - if (lhs_shl->Arg(0).IsImmediate()) { + IR::Inst* const lhs_mul{lhs_shl->Arg(0).TryInstRecursive()}; + if (!lhs_mul) { return false; } - IR::Inst* const lhs_mul{lhs_shl->Arg(0).InstRecursive()}; - IR::Inst* const rhs_mul{rhs_arg.InstRecursive()}; if (lhs_mul->GetOpcode() != IR::Opcode::IMul32 || rhs_mul->GetOpcode() != IR::Opcode::IMul32) { return false; } - if (lhs_mul->Arg(1).Resolve() != rhs_mul->Arg(1).Resolve()) { + const IR::U32 factor_b{lhs_mul->Arg(1)}; + if (factor_b.Resolve() != rhs_mul->Arg(1).Resolve()) { return false; } - const IR::U32 factor_b{lhs_mul->Arg(1)}; - if (lhs_mul->Arg(0).IsImmediate() || rhs_mul->Arg(0).IsImmediate()) { + IR::Inst* const lhs_bfe{lhs_mul->Arg(0).TryInstRecursive()}; + IR::Inst* const rhs_bfe{rhs_mul->Arg(0).TryInstRecursive()}; + if (!lhs_bfe || !rhs_bfe) { return false; } - IR::Inst* const lhs_bfe{lhs_mul->Arg(0).InstRecursive()}; - IR::Inst* const rhs_bfe{rhs_mul->Arg(0).InstRecursive()}; if (lhs_bfe->GetOpcode() != IR::Opcode::BitFieldUExtract) { return false; } @@ -155,10 +153,10 @@ bool FoldXmadMultiply(IR::Block& block, IR::Inst& inst) { if (rhs_bfe->Arg(1) != IR::Value{0U} || rhs_bfe->Arg(2) != IR::Value{16U}) { return false; } - if (lhs_bfe->Arg(0).Resolve() != rhs_bfe->Arg(0).Resolve()) { + const IR::U32 factor_a{lhs_bfe->Arg(0)}; + if (factor_a.Resolve() != rhs_bfe->Arg(0).Resolve()) { return false; } - const IR::U32 factor_a{lhs_bfe->Arg(0)}; IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)}; inst.ReplaceUsesWith(ir.IMul(factor_a, factor_b)); return true; -- cgit v1.2.3