freedreno/ir3: extend liverange of arrays

Use livein state of other blocks to extend liverange of arrays when they
are still needed by successor blocks.

Signed-off-by: Rob Clark <robdclark@gmail.com>

diff --git a/src/gallium/drivers/freedreno/ir3/ir3_ra.c b/src/gallium/drivers/freedreno/ir3/ir3_ra.c
index a22e4ca49188f04b0c91eb6b2737deb3e6f22102..9158aa53b7dd33d7129d8c104f7f22f7442d769d 100644 (file)
--- a/src/gallium/drivers/freedreno/ir3/ir3_ra.c
+++ b/src/gallium/drivers/freedreno/ir3/ir3_ra.c
@@ -946,6 +946,17 @@ ra_add_interference(struct ir3_ra_ctx *ctx)
                                ctx->use[i] = MAX2(ctx->use[i], block->end_ip);
                        }
                }
+
+               list_for_each_entry (struct ir3_array, arr, &ctx->ir->array_list, node) {
+                       for (unsigned i = 0; i < arr->length; i++) {
+                               if (BITSET_TEST(bd->livein, i + arr->base)) {
+                                       arr->start_ip = MIN2(arr->start_ip, block->start_ip);
+                               }
+                               if (BITSET_TEST(bd->livein, i + arr->base)) {
+                                       arr->end_ip = MAX2(arr->end_ip, block->end_ip);
+                               }
+                       }
+               }
        }
 
        /* need to fix things up to keep outputs live: */