[Mesa-dev] [PATCH 3/3] panfrost/midgard: Enable integer constant inlining

Alyssa Rosenzweig alyssa at rosenzweig.io
Wed May 15 04:59:06 UTC 2019


Midgard ALU features two types of constants: embedded constants (128-bit
chunk, zero/one per schedule bundle) and inline constants (16-bit
splattered into the op, second source if present). Inline constants are
much more efficient from a space and scheduling freedom standpoint, so
it's desirable to inline when possible. Now that integer ops are well
understood and in use, we enable inlining of integers constants in
addition to floats (which have been inlined since forever).

Signed-off-by: Alyssa Rosenzweig <alyssa at rosenzweig.io>
---
 src/gallium/drivers/panfrost/midgard/midgard_compile.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/src/gallium/drivers/panfrost/midgard/midgard_compile.c b/src/gallium/drivers/panfrost/midgard/midgard_compile.c
index 5354c0667e2..421a3343a71 100644
--- a/src/gallium/drivers/panfrost/midgard/midgard_compile.c
+++ b/src/gallium/drivers/panfrost/midgard/midgard_compile.c
@@ -3134,11 +3134,7 @@ embedded_to_inline_constant(compiler_context *ctx)
                         /* Scale constant appropriately, if we can legally */
                         uint16_t scaled_constant = 0;
 
-                        /* XXX: Check legality */
                         if (midgard_is_integer_op(op)) {
-                                /* TODO: Inline integer */
-                                continue;
-
                                 unsigned int *iconstants = (unsigned int *) ins->constants;
                                 scaled_constant = (uint16_t) iconstants[component];
 
-- 
2.20.1



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