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agx: Add forward optimizing pass for fmov

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Explain the ideas behind our SSA-based optimizer (inspired by ACO's,
thank you to Daniel Schuermann for discussing this with me in the
context of Bifrost), and implement the subset needed to propagate
abs/neg through.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10582>
This commit is contained in:
Alyssa Rosenzweig
2021-04-17 10:29:27 -04:00
committed by Alyssa Rosenzweig
parent e50bae00f4
commit 28801b4849
4 changed files with 139 additions and 0 deletions
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5
src/asahi/compiler/agx_compile.c
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@@ -710,6 +710,11 @@ agx_compile_shader_nir(nir_shader *nir,
agx_foreach_block(ctx, block)
block->name = block_source_count++;
if (agx_debug & AGX_DBG_SHADERS && !skip_internal)
agx_print_shader(ctx, stdout);
agx_optimizer(ctx);
if (agx_debug & AGX_DBG_SHADERS && !skip_internal)
agx_print_shader(ctx, stdout);