From: Rhys Perry Date: Tue, 21 Apr 2020 16:37:44 +0000 (+0100) Subject: aco: copy-propagate p_create_vector copies of vectors X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=2dc550202e82c5da198ad0a416a5d24dd89addd8;p=mesa.git aco: copy-propagate p_create_vector copies of vectors Instead of copying the operands of the other p_create_vector and labelling the definition with label_vec, copy the operands and label it with label_temp so that it can be copy-propagated. This was found while removing a redundant copy in load_input_from_temps() which removed duplicate p_create_vector instructions. shader-db (Navi): Totals from 139 (0.11% of 127638) affected shaders: VGPRs: 8472 -> 7948 (-6.19%) CodeSize: 514592 -> 512368 (-0.43%) MaxWaves: 1089 -> 1195 (+9.73%) Instrs: 100214 -> 99658 (-0.55%) Cycles: 400856 -> 398632 (-0.55%) VMEM: 15545 -> 15338 (-1.33%) Copies: 5140 -> 4584 (-10.82%) Signed-off-by: Rhys Perry Reviewed-by: Timur Kristóf Part-of: --- diff --git a/src/amd/compiler/aco_optimizer.cpp b/src/amd/compiler/aco_optimizer.cpp index 491df9404ba..3c87d061468 100644 --- a/src/amd/compiler/aco_optimizer.cpp +++ b/src/amd/compiler/aco_optimizer.cpp @@ -898,6 +898,11 @@ void label_instruction(opt_ctx &ctx, Block& block, aco_ptr& instr) switch (instr->opcode) { case aco_opcode::p_create_vector: { + if (instr->operands.size() == 1 && instr->operands[0].isTemp()) + ctx.info[instr->definitions[0].tempId()].set_temp(instr->operands[0].getTemp()); + else + ctx.info[instr->definitions[0].tempId()].set_vec(instr.get()); + unsigned num_ops = instr->operands.size(); for (const Operand& op : instr->operands) { if (op.isTemp() && ctx.info[op.tempId()].is_vec()) @@ -923,10 +928,6 @@ void label_instruction(opt_ctx &ctx, Block& block, aco_ptr& instr) } assert(k == num_ops); } - if (instr->operands.size() == 1 && instr->operands[0].isTemp()) - ctx.info[instr->definitions[0].tempId()].set_temp(instr->operands[0].getTemp()); - else - ctx.info[instr->definitions[0].tempId()].set_vec(instr.get()); break; } case aco_opcode::p_split_vector: {