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i965/vec4: Change opt_vector_float to keep track of the last offset seen in bytes.

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This simplifies things slightly and makes the pass more correct in
presence of sub-GRF offsets.

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
This commit is contained in:
Francisco Jerez 2016-09-01 21:51:07 -07:00
parent 230615e228
commit b52fefc4d5
1 changed files with 3 additions and 3 deletions
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6
src/mesa/drivers/dri/i965/brw_vec4.cpp
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@ -365,7 +365,7 @@ vec4_visitor::opt_vector_float()
bool progress = false;
foreach_block(block, cfg) {
int last_reg = -1, last_reg_offset = -1;
int last_reg = -1, last_offset = -1;
enum brw_reg_file last_reg_file = BAD_FILE;
uint8_t imm[4] = { 0 };
@ -405,7 +405,7 @@ vec4_visitor::opt_vector_float()
* sequence. Combine anything we've accumulated so far.
*/
if (last_reg != inst->dst.nr ||
last_reg_offset != inst->dst.offset / REG_SIZE ||
last_offset != inst->dst.offset ||
last_reg_file != inst->dst.file ||
(vf > 0 && dest_type != need_type)) {
@ -449,7 +449,7 @@ vec4_visitor::opt_vector_float()
imm_inst[inst_count++] = inst;
last_reg = inst->dst.nr;
last_reg_offset = inst->dst.offset / REG_SIZE;
last_offset = inst->dst.offset;
last_reg_file = inst->dst.file;
if (vf > 0)
dest_type = need_type;