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pan/mdg: Use analysis to set .cont/.last flags

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Corresponds roughly to what we analyze. Note that "terminate AND
execute" is a contradiction (rather: it's equivalent to just
terminating), hence why there are only three possibilities for the
states of the flags:

   .cont = continue, don't execute
   .last = don't continue, don't execute
   .cont.last = continue and execute

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5014>
This commit is contained in:
Alyssa Rosenzweig 2020-05-12 13:34:52 -04:00 • committed by Marge Bot
parent 9a7f0e268b
commit 344dd91497
1 changed files with 2 additions and 10 deletions
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12
src/panfrost/midgard/midgard_emit.c
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@ -508,16 +508,8 @@ emit_binary_bundle(compiler_context *ctx,
ctx->texture_op_count--;
if (mir_op_computes_derivatives(ctx->stage, ins->texture.op)) {
bool continues = ctx->texture_op_count > 0;
/* Control flow complicates helper invocation
* lifespans, so for now just keep helper threads
* around indefinitely with loops. TODO: Proper
* analysis */
continues |= ctx->loop_count > 0;
ins->texture.cont = continues;
ins->texture.last = !continues;
ins->texture.cont = !ins->helper_terminate;
ins->texture.last = ins->helper_terminate || ins->helper_execute;
} else {
ins->texture.cont = ins->texture.last = 1;
}