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i965/fs: Enable constant propagation in 16-wide.

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All that needed fixing was skipping the newly-possible
uncompressed/sechalf partial GRF constant writes.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Eric Anholt 2011-03-25 11:19:53 -07:00
parent 91d1a14158
commit 0834607a89
1 changed files with 3 additions and 5 deletions
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8
src/mesa/drivers/dri/i965/brw_fs.cpp
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@ -3107,10 +3107,6 @@ fs_visitor::propagate_constants()
{
bool progress = false;
/* Need to update the MRF tracking for compressed instructions. */
if (c->dispatch_width == 16)
return false;
calculate_live_intervals();
foreach_iter(exec_list_iterator, iter, this->instructions) {
@ -3119,7 +3115,9 @@ fs_visitor::propagate_constants()
if (inst->opcode != BRW_OPCODE_MOV ||
inst->predicated ||
inst->dst.file != GRF || inst->src[0].file != IMM ||
inst->dst.type != inst->src[0].type)
inst->dst.type != inst->src[0].type ||
(c->dispatch_width == 16 &&
(inst->force_uncompressed || inst->force_sechalf)))
continue;
/* Don't bother with cases where we should have had the