From: Connor Abbott Date: Tue, 30 Jun 2015 20:38:20 +0000 (-0700) Subject: i965/fs: remove special case in setup_payload_interference() X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=18e73bf7f8b12022e02db3230ee109657581900b;p=mesa.git i965/fs: remove special case in setup_payload_interference() regs_read() will handle LINTERP for us since the previous commit. In addition, we were being too conservative, since it will only read 2 registers on SIMD8. instructions in affected programs: 9061 -> 8893 (-1.85%) helped: 10 HURT: 0 GAINED: 0 LOST: 0 All of the changes were due to spills being eliminated, mostly in KSP shaders. Reviewed-by: Jordan Justen Signed-off-by: Connor Abbott --- diff --git a/src/mesa/drivers/dri/i965/brw_fs_reg_allocate.cpp b/src/mesa/drivers/dri/i965/brw_fs_reg_allocate.cpp index 620fc235c1b..1ee19e45a1b 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_reg_allocate.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_reg_allocate.cpp @@ -389,26 +389,6 @@ fs_visitor::setup_payload_interference(struct ra_graph *g, /* Special case instructions which have extra implied registers used. */ switch (inst->opcode) { - case FS_OPCODE_LINTERP: - /* On gen6+ in SIMD16, there are 4 adjacent registers used by - * PLN's sourcing of the deltas, while we list only the first one - * in the arguments. Pre-gen6, the deltas are computed in normal - * VGRFs. - */ - if (devinfo->gen >= 6) { - int delta_x_arg = 0; - if (inst->src[delta_x_arg].file == HW_REG && - inst->src[delta_x_arg].fixed_hw_reg.file == - BRW_GENERAL_REGISTER_FILE) { - for (int i = 1; i < 4; ++i) { - int node = inst->src[delta_x_arg].fixed_hw_reg.nr + i; - assert(node < payload_node_count); - payload_last_use_ip[node] = use_ip; - } - } - } - break; - case CS_OPCODE_CS_TERMINATE: payload_last_use_ip[0] = use_ip; break;