third_party_mesa3d/src/asahi/compiler/agx_nir.h

/*
 * Copyright 2023 Alyssa Rosenzweig
 * SPDX-License-Identifier: MIT
 */
#ifndef AGX_NIR_H
#define AGX_NIR_H

#include <stdbool.h>

struct nir_shader;

bool agx_nir_opt_ixor_bcsel(struct nir_shader *shader);
bool agx_nir_lower_algebraic_late(struct nir_shader *shader);
bool agx_nir_fuse_algebraic_late(struct nir_shader *shader);

#endif
agx: Mask shifts in the backend This gives our shifts SM5 behaviour at the cost of a little extra ALU. That way, we match NIR's shifts. This fixes unsoundness of GLSL expressions like "a << (b & 31)", where the & would mistakenly get optimized away. Closes: #8181 Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Reported-by: Georg Lehmann <dadschoorse@gmail.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21673> 2023-01-29 13:29:32 -05:00			`/*`
			`* Copyright 2023 Alyssa Rosenzweig`
			`* SPDX-License-Identifier: MIT`
			`*/`
			`#ifndef AGX_NIR_H`
			`#define AGX_NIR_H`

			`#include <stdbool.h>`

			`struct nir_shader;`

agx: Add algebraic opt to help with discard lowering When lowering discards, it will be convenient to generate the pattern: (cond ? 255 : 0) ^ 255 Add rules to optimize that to (cond ? 0 : 255) This is not part of the main algebraic optimizer since this lowering happens late. Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23998> 2023-06-16 08:55:58 -04:00			`bool agx_nir_opt_ixor_bcsel(struct nir_shader *shader);`
agx: Mask shifts in the backend This gives our shifts SM5 behaviour at the cost of a little extra ALU. That way, we match NIR's shifts. This fixes unsoundness of GLSL expressions like "a << (b & 31)", where the & would mistakenly get optimized away. Closes: #8181 Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Reported-by: Georg Lehmann <dadschoorse@gmail.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21673> 2023-01-29 13:29:32 -05:00			`bool agx_nir_lower_algebraic_late(struct nir_shader *shader);`
agx: Optimize multiplies We have an imad instruction and our iadd has a small immediate shift on the second source. Together, these allow expressing lots of integer multiplies more efficiently. Add some rules to optimize these now that the backend compiler can ingest the optimized forms. Half-register changes are from load_const scheduling changing in some vertex shaders. total instructions in shared programs: 1539092 -> 1537949 (-0.07%) instructions in affected programs: 167896 -> 166753 (-0.68%) total bytes in shared programs: 10543012 -> 10533866 (-0.09%) bytes in affected programs: 1218068 -> 1208922 (-0.75%) total halfregs in shared programs: 483180 -> 483448 (0.06%) halfregs in affected programs: 1942 -> 2210 (13.80%) Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22695> 2023-04-25 13:52:32 -04:00			`bool agx_nir_fuse_algebraic_late(struct nir_shader *shader);`
agx: Mask shifts in the backend This gives our shifts SM5 behaviour at the cost of a little extra ALU. That way, we match NIR's shifts. This fixes unsoundness of GLSL expressions like "a << (b & 31)", where the & would mistakenly get optimized away. Closes: #8181 Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Reported-by: Georg Lehmann <dadschoorse@gmail.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21673> 2023-01-29 13:29:32 -05:00
			`#endif`