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freedreno/ir3: extend liverange of arrays

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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>
This commit is contained in:
Rob Clark 2018-01-21 11:13:44 -05:00
parent ac459a6f7f
commit 1b658533e1
1 changed files with 11 additions and 0 deletions
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11
src/gallium/drivers/freedreno/ir3/ir3_ra.c
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@ -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: */