v_frexp_exp_i16_f16 returns the two's complement for negative
exponents. For example, with 0.333252 it returns 0.666504 for
the mantissa and 65535 for the exponent (-1 in decimal).
RADV/LLVM and AMDVLK do a v_bfe_i32 and AMDGPU-PRO uses SDWA with
the sign extension bit set. The latter is probably what we want to
do in long term but for now RA doesn't support changing non-SDWA
instructions to SDWA if useful/needed.
Fixes dEQP-VK.glsl.builtin.precision_fp16_storage16b.frexp.compute.*.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4546>
These's still improvements needed for sub-dword definitions, but that's
not as simple.
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4507>
For emitting RMW packets in the command stream. This new helper
will be useful for implementing extended dynamic states to only
overwrite the fields that need to be updated instead of storing
more values in the pipeline.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4531>
Because 16-bit constants are represented with the s1 RegClass, we
have to extract the low half.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4509>
PSEUDO instructions are lowered using SDWA, and thus,
cannot take literals and before GFX9 cannot take constants
at all. As the in-register representation differs between
32bit and 16bit floats, we first need to ensure correct
behavior.
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4492>
Minor refactoring to avoid some pointer chasing.
This patch also changes the live_out argument to be
passed by reference to avoid an unnecessary copy.
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4130>
When finding a good place for a register, we can ignore
killed operands.
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4130>
An improved hashing greatly reduces the number of collisions,
and thus, increases the speed for lookups in the hash table.
The hash function now uses Murmur3 written by Austin Appleby.
This patch also pre-reserves space for the hashmap to avoid rehashing.
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4130>
This gives +8% with Wolfeinstein Youngblood on my Vega64, and
according to someone else, it also improves performance with Doom
2016 and Wolfenstein 2 (and probably other ID Tech games).
This improvement is because Youngblood uses GENERAL for the main
depth-only pass and TC-compat HTILE is now enabled with GENERAL if
we know that we are outside of a render loop. This obviously also
reduces the number of HTILE decompressions from/to GENERAL.
Note that Youngblood violates the Vulkan spec regarding render loops
because they are only allowed with input attachments. Expect possible
rendering issues if apps use render loops with the wrong way (ie.
without input attachmens) because HTILE might not be coherent if
a depth-stencil texture is sampled and rendered in the same draw.
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/2704
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4391>
If no texture fetches happen it's useless to enable TC-compat HTILE.
Because the driver currently doesn't support TC-compat HTILE for
storage images we don't have to check.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4497>
