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intel/fs/ra: Only add dest interference to sources that exist

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Fixes: 83dedb6354 "i965: Add src/dst interference for certain"
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
(cherry picked from commit 88cac12230)
This commit is contained in:
Jason Ekstrand 2019-05-14 10:36:09 -05:00 • committed by Juan A. Suarez Romero
parent c03d9a7fa9
commit 8cf49e1662
1 changed files with 1 additions and 1 deletions
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2
src/intel/compiler/brw_fs_reg_allocate.cpp
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@ -591,7 +591,7 @@ fs_visitor::assign_regs(bool allow_spilling, bool spill_all)
*/
foreach_block_and_inst(block, fs_inst, inst, cfg) {
if (inst->dst.file == VGRF && inst->has_source_and_destination_hazard()) {
for (unsigned i = 0; i < 3; i++) {
for (unsigned i = 0; i < inst->sources; i++) {
if (inst->src[i].file == VGRF) {
ra_add_node_interference(g, inst->dst.nr, inst->src[i].nr);
}