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For now we're still just generating MOVs, but this will let us fold into
other ops in the future. No difference on shader-db.
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Every caller was dereffing the qinst, and this will let us make the number
of sources vary depending on the destination of the qinst so that we can
have general ALU ops that store to tex_[strb] and get an implicit uniform.
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This will be used in the ddx/ddy support for "Am I the top half?" or "Am I
the left half?" checks.
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We have the prior list_foreach() all over the code, but I need to move
where instructions live as part of adding support for control flow. Start
by just converting to a helper iterator macro. (The simpler
"qir_for_each_inst()" will be used for the for-each-inst-in-a-block
iterator macro later)
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Introduced in 8e2d0843c02daf5280184f179ae8ed440ac90d7f.
Signed-off-by: Rhys Kidd <rhyskidd@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
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This will be used for resetting the uniform stream in the presence of
branching, but may also be useful as an optimization to reduce how many
uniforms we have to copy out per draw call (in exchange for increasing
icache pressure).
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This has caught a couple of bugs during loop development so far, and I
should probably have written it long ago.
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