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freedreno/ir3: update obsolete comment

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Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5458>
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Rob Clark 2020-06-14 09:53:11 -07:00 • committed by Marge Bot
parent 5baf430261
commit 1d54fb5b2b
1 changed files with 10 additions and 4 deletions
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14
src/freedreno/ir3/ir3_legalize.c
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@ -33,10 +33,16 @@
/*
* Legalize:
*
* We currently require that scheduling ensures that we have enough nop's
* in all the right places. The legalize step mostly handles fixing up
* instruction flags ((ss)/(sy)/(ei)), and collapses sequences of nop's
* into fewer nop's w/ rpt flag.
* The legalize pass handles ensuring sufficient nop's and sync flags for
* correct execution.
*
* 1) Iteratively determine where sync ((sy)/(ss)) flags are needed,
* based on state flowing out of predecessor blocks until there is
* no further change. In some cases this requires inserting nops.
* 2) Mark (ei) on last varying input, and (ul) on last use of a0.x
* 3) Final nop scheduling for instruction latency
* 4) Resolve jumps and schedule blocks, marking potential convergence
* points with (jp)
*/
struct ir3_legalize_ctx {