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pan/midgard: Allocate separate spill indices for lowered moves

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This helps RA be slightly more reasonable.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
This commit is contained in:
Alyssa Rosenzweig 2019-08-09 10:40:23 -07:00
parent 14b5b9ac38
commit 41e68094f8
1 changed files with 4 additions and 6 deletions
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10
src/panfrost/midgard/midgard_ra.c
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@ -497,16 +497,14 @@ mir_lower_special_reads(compiler_context *ctx)
midgard_instruction *use = mir_next_op(pre_use);
assert(use);
mir_insert_instruction_before(use, m);
mir_rewrite_index_dst_tag(ctx, i, idx, classes[j]);
} else {
idx = spill_idx++;
m = v_mov(i, blank_alu_src, idx);
mir_insert_instruction_before(pre_use, m);
mir_rewrite_index_src_single(pre_use, i, idx);
}
}
/* Rewrite to use */
if (hazard_write)
mir_rewrite_index_dst_tag(ctx, i, idx, classes[j]);
else
mir_rewrite_index_src_tag(ctx, i, idx, classes[j]);
}
}