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nir: Add un/pack_32_4x8 opcodes

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Complement the existing un/pack_32_2x16 opcodes. These are useful for
8-bit format packing. On Midgard, they are equivalent to just a 32-bit
move, but other GPUs could lower to other packs if needed.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5107>
This commit is contained in:
Alyssa Rosenzweig 2020-05-13 13:51:06 -04:00 • committed by Marge Bot
parent 46d5b07c5c
commit fcbc022787
1 changed files with 7 additions and 0 deletions
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7
src/compiler/nir/nir_opcodes.py
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@ -99,6 +99,7 @@ tbool8 = "bool8"
tbool16 = "bool16"
tbool32 = "bool32"
tuint = "uint"
tuint8 = "uint8"
tuint16 = "uint16"
tfloat16 = "float16"
tfloat32 = "float32"
@ -357,6 +358,9 @@ dst.x = (src0.x << 0) |
(src0.w << 24);
""")
unop_horiz("pack_32_4x8", 1, tuint32, 4, tuint8,
"dst.x = src0.x | ((uint32_t)src0.y << 8) | ((uint32_t)src0.z << 16) | ((uint32_t)src0.w << 24);")
unop_horiz("pack_32_2x16", 1, tuint32, 2, tuint16,
"dst.x = src0.x | ((uint32_t)src0.y << 16);")
@ -375,6 +379,9 @@ unop_horiz("unpack_64_4x16", 4, tuint16, 1, tuint64,
unop_horiz("unpack_32_2x16", 2, tuint16, 1, tuint32,
"dst.x = src0.x; dst.y = src0.x >> 16;")
unop_horiz("unpack_32_4x8", 4, tuint8, 1, tuint32,
"dst.x = src0.x; dst.y = src0.x >> 8; dst.z = src0.x >> 16; dst.w = src0.x >> 24;")
unop_horiz("unpack_half_2x16_flush_to_zero", 2, tfloat32, 1, tuint32, """
dst.x = unpack_half_1x16_flush_to_zero((uint16_t)(src0.x & 0xffff));
dst.y = unpack_half_1x16_flush_to_zero((uint16_t)(src0.x << 16));