Module: Mesa Branch: main Commit: d36a43598c2dd2c490e8e8cb901d067fa56aeb8d URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=d36a43598c2dd2c490e8e8cb901d067fa56aeb8d
Author: Daniel Schürmann <[email protected]> Date: Tue Dec 21 12:17:24 2021 +0100 aco/ra: fix get_reg_for_operand() in case of stride mismatches We have to clear the register file from the previous operand as otherwise, there might be no space left. Totals from 5 (0.00% of 134572) affected shaders: (GFX10.3) CodeSize: 21144 -> 21000 (-0.68%); split: -0.72%, +0.04% Instrs: 3738 -> 3720 (-0.48%); split: -0.51%, +0.03% Latency: 517229 -> 516319 (-0.18%); split: -0.18%, +0.00% InvThroughput: 49068 -> 48902 (-0.34%); split: -0.38%, +0.04% Copies: 501 -> 483 (-3.59%); split: -3.79%, +0.20% Cc: mesa-stable Reviewed-by: Timur Kristóf <[email protected]> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14279> --- src/amd/compiler/aco_register_allocation.cpp | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/src/amd/compiler/aco_register_allocation.cpp b/src/amd/compiler/aco_register_allocation.cpp index 530d7d2e177..088afaa307c 100644 --- a/src/amd/compiler/aco_register_allocation.cpp +++ b/src/amd/compiler/aco_register_allocation.cpp @@ -1934,10 +1934,9 @@ get_reg_for_operand(ra_ctx& ctx, RegisterFile& register_file, dst = operand.physReg(); } else { + /* clear the operand in case it's only a stride mismatch */ + register_file.clear(src, operand.regClass()); dst = get_reg(ctx, register_file, operand.getTemp(), parallelcopy, instr, operand_index); - update_renames( - ctx, register_file, parallelcopy, instr, - instr->opcode != aco_opcode::p_create_vector ? rename_not_killed_ops : (UpdateRenames)0); } Operand pc_op = operand;
