diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs_register_coalesce.cpp | 80 |
1 files changed, 40 insertions, 40 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs_register_coalesce.cpp b/src/mesa/drivers/dri/i965/brw_fs_register_coalesce.cpp index 0329bc3ebc6..34f8715eeb9 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_register_coalesce.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_register_coalesce.cpp @@ -95,26 +95,26 @@ is_coalesce_candidate(const fs_visitor *v, const fs_inst *inst) static bool can_coalesce_vars(brw::fs_live_variables *live_intervals, const cfg_t *cfg, const fs_inst *inst, - int var_to, int var_from) + int dst_var, int src_var) { - if (!live_intervals->vars_interfere(var_from, var_to)) + if (!live_intervals->vars_interfere(src_var, dst_var)) return true; - int start_to = live_intervals->start[var_to]; - int end_to = live_intervals->end[var_to]; - int start_from = live_intervals->start[var_from]; - int end_from = live_intervals->end[var_from]; + int dst_start = live_intervals->start[dst_var]; + int dst_end = live_intervals->end[dst_var]; + int src_start = live_intervals->start[src_var]; + int src_end = live_intervals->end[src_var]; /* Variables interfere and one line range isn't a subset of the other. */ - if ((end_to > end_from && start_from < start_to) || - (end_from > end_to && start_to < start_from)) + if ((dst_end > src_end && src_start < dst_start) || + (src_end > dst_end && dst_start < src_start)) return false; /* Check for a write to either register in the intersection of their live * ranges. */ - int start_ip = MAX2(start_to, start_from); - int end_ip = MIN2(end_to, end_from); + int start_ip = MAX2(dst_start, src_start); + int end_ip = MIN2(dst_end, src_end); foreach_block(block, cfg) { if (block->end_ip < start_ip) @@ -154,11 +154,11 @@ fs_visitor::register_coalesce() int src_size = 0; int channels_remaining = 0; - int reg_from = -1, reg_to = -1; - int reg_to_offset[MAX_VGRF_SIZE]; + int src_reg = -1, dst_reg = -1; + int dst_reg_offset[MAX_VGRF_SIZE]; fs_inst *mov[MAX_VGRF_SIZE]; - int var_to[MAX_VGRF_SIZE]; - int var_from[MAX_VGRF_SIZE]; + int dst_var[MAX_VGRF_SIZE]; + int src_var[MAX_VGRF_SIZE]; foreach_block_and_inst(block, fs_inst, inst, cfg) { if (!is_coalesce_candidate(this, inst)) @@ -170,8 +170,8 @@ fs_visitor::register_coalesce() continue; } - if (reg_from != inst->src[0].reg) { - reg_from = inst->src[0].reg; + if (src_reg != inst->src[0].reg) { + src_reg = inst->src[0].reg; src_size = alloc.sizes[inst->src[0].reg]; assert(src_size <= MAX_VGRF_SIZE); @@ -179,15 +179,15 @@ fs_visitor::register_coalesce() channels_remaining = src_size; memset(mov, 0, sizeof(mov)); - reg_to = inst->dst.reg; + dst_reg = inst->dst.reg; } - if (reg_to != inst->dst.reg) + if (dst_reg != inst->dst.reg) continue; if (inst->opcode == SHADER_OPCODE_LOAD_PAYLOAD) { for (int i = 0; i < src_size; i++) { - reg_to_offset[i] = i; + dst_reg_offset[i] = i; } mov[0] = inst; channels_remaining -= inst->regs_written; @@ -203,9 +203,9 @@ fs_visitor::register_coalesce() channels_remaining = -1; continue; } - reg_to_offset[offset] = inst->dst.reg_offset; + dst_reg_offset[offset] = inst->dst.reg_offset; if (inst->regs_written > 1) - reg_to_offset[offset + 1] = inst->dst.reg_offset + 1; + dst_reg_offset[offset + 1] = inst->dst.reg_offset + 1; mov[offset] = inst; channels_remaining -= inst->regs_written; } @@ -215,20 +215,20 @@ fs_visitor::register_coalesce() bool can_coalesce = true; for (int i = 0; i < src_size; i++) { - if (reg_to_offset[i] != reg_to_offset[0] + i) { + if (dst_reg_offset[i] != dst_reg_offset[0] + i) { /* Registers are out-of-order. */ can_coalesce = false; - reg_from = -1; + src_reg = -1; break; } - var_to[i] = live_intervals->var_from_vgrf[reg_to] + reg_to_offset[i]; - var_from[i] = live_intervals->var_from_vgrf[reg_from] + i; + dst_var[i] = live_intervals->var_from_vgrf[dst_reg] + dst_reg_offset[i]; + src_var[i] = live_intervals->var_from_vgrf[src_reg] + i; if (!can_coalesce_vars(live_intervals, cfg, inst, - var_to[i], var_from[i])) { + dst_var[i], src_var[i])) { can_coalesce = false; - reg_from = -1; + src_reg = -1; break; } } @@ -251,31 +251,31 @@ fs_visitor::register_coalesce() foreach_block_and_inst(block, fs_inst, scan_inst, cfg) { if (scan_inst->dst.file == GRF && - scan_inst->dst.reg == reg_from) { - scan_inst->dst.reg = reg_to; + scan_inst->dst.reg == src_reg) { + scan_inst->dst.reg = dst_reg; scan_inst->dst.reg_offset = - reg_to_offset[scan_inst->dst.reg_offset]; + dst_reg_offset[scan_inst->dst.reg_offset]; } for (int j = 0; j < scan_inst->sources; j++) { if (scan_inst->src[j].file == GRF && - scan_inst->src[j].reg == reg_from) { - scan_inst->src[j].reg = reg_to; + scan_inst->src[j].reg == src_reg) { + scan_inst->src[j].reg = dst_reg; scan_inst->src[j].reg_offset = - reg_to_offset[scan_inst->src[j].reg_offset]; + dst_reg_offset[scan_inst->src[j].reg_offset]; } } } for (int i = 0; i < src_size; i++) { - live_intervals->start[var_to[i]] = - MIN2(live_intervals->start[var_to[i]], - live_intervals->start[var_from[i]]); - live_intervals->end[var_to[i]] = - MAX2(live_intervals->end[var_to[i]], - live_intervals->end[var_from[i]]); + live_intervals->start[dst_var[i]] = + MIN2(live_intervals->start[dst_var[i]], + live_intervals->start[src_var[i]]); + live_intervals->end[dst_var[i]] = + MAX2(live_intervals->end[dst_var[i]], + live_intervals->end[src_var[i]]); } - reg_from = -1; + src_reg = -1; } if (progress) { |