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freedreno/ir3/ra: fix failed assert for a0/p0

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The address and predicate register are special, they don't get assigned
in RA.  So do a better job of ignoring them rather than hitting later
asserts.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
This commit is contained in:
Rob Clark 2015-07-05 19:53:10 -04:00
parent 65b2ae510b
commit a1a6f00782
1 changed files with 5 additions and 0 deletions
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5
src/gallium/drivers/freedreno/ir3/ir3_ra.c
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@ -469,6 +469,11 @@ ra_block_find_definers(struct ir3_ra_ctx *ctx, struct ir3_block *block)
struct ir3_ra_instr_data *id = &ctx->instrd[instr->ip];
if (instr->regs_count == 0)
continue;
/* couple special cases: */
if (writes_addr(instr) || writes_pred(instr)) {
id->cls = -1;
continue;
}
id->defn = get_definer(ctx, instr, &id->sz, &id->off);
id->cls = size_to_class(id->sz, is_half(id->defn));
}