This commit pulls the surface descriptor helpers out into brw_eu.h and
makes them no longer depend on the codegen infrastructure. This should
allow us to use them directly from the IR code instead of the generator.
This change is unfortunately less mechanical than perhaps one would like
but it should be fairly straightforward.
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Instead of magically falling back to SIMD8 for atomics and typed
messages on Ivy Bridge, explicitly figure out the exec size and pass
that into brw_surface_payload_size.
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
emit_uniformize() emits SHADER_OPCODE_FIND_LIVE_CHANNEL with its
flag_subreg set, so that the IR knows which flag is accessed. However
the flag is only used on Gen7 in Align1 mode.
To avoid setting unnecessary bits in the instruction words, get the
information we need and reset the default flag register. This allows
round-tripping through the assembler/disassembler.
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
For a long time, we based exec sizes on destination register widths.
We've not been doing that since 1ca3a94427 but a few remnants
accidentally remained.
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
A follow on patch will move the 'nr' field to the union containing the
immediate field, so prepare by checking that we're only testing these
assertions if the .file is correct.
The assertions with != ARF were kind of silly to begin with because the
<128 check is specifically only for things in the GRF.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
I triggered this bug while prototyping code for a future platform on
IVB. Could be a problem today though if a strided move is
copy-propagated into a type-converting move with DF destination.
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
When RepCtrl is set, the swizzle field is ignored by the hardware. In
order to ensure a 1-to-1 correspondence between the human-readable
disassembly and the binary instruction encoding always set the swizzle
to XXXX (all zeros) when it is unused due to RepCtrl
Signed-off-by: Sagar Ghuge <sagar.ghuge@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
To have uniform behavior while disassembling send(c) instruction use
register type of unsigned doubleword for src1 when message descriptor is
immediate value. Bspec does not specifiy anything for src1 immediate
default type.
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Sagar Ghuge <sagar.ghuge@intel.com>
v2: Split changes to the message type field to another patch. Suggested
by Caio.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Constructing a descriptor in-place as part of the immediate of an ALU
instruction is no longer supported.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
The return value is not used anymore. This allows simplifying the
code slightly, and in addition it should frustrate anybody's attempts
to continue using the obsolete piecemeal approach to construct a
message descriptor in combination with brw_send_indirect_message().
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
All users of brw_send_indirect_surface_message() should be providing a
full descriptor immediate up front by now, this isn't necessary
anymore.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
The current approach of returning a setup instruction where additional
descriptor fields can be specified is still supported in order to keep
things working, but it will be removed later in this series.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This replaces brw_set_message_descriptor() with the composition of
brw_set_desc() and a new inline helper function that packs the common
message descriptor controls into an integer. The goal is to represent
all message descriptors as a 32-bit integer which is written at once
into the instruction, which is more flexible (SENDS anyone?), robust
(see d2eecf0b0b fixing an issue
ultimately caused by some bits of the extended message descriptor
being left undefined) and future-proof than the current approach of
specifying the individual descriptor fields directly into the
instruction.
This approach also seems more self-documenting, since it will allow
removing calls to functions with way too many arguments like
brw_set_*_message() and brw_send_indirect_message(), and instead
provide a single descriptor argument constructed from an appropriate
combination of brw_*_desc() helpers.
Note that because brw_set_message_descriptor() was (conditionally?)
overriding fields of the instruction which strictly speaking weren't
part of the message descriptor, this involves calling
brw_inst_set_sfid() and brw_inst_set_eot() in some cases in addition
to brw_set_desc().
v2: Use SET_BITS macro instead of left shift (Ken).
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Instead of the state stack that's based on copying a dummy instruction
around, we start using a logical stack of brw_insn_states. This uses a
bit less memory and is way less conceptually bogus.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Prior to gen8, the flag [sub]register number is in a different spot on
3src instructions than on other instructions. Starting with Broadwell,
they made it consistent. This commit fixes bugs that occur when a
conditional modifier gets propagated into a 3src instruction such as a
MAD.
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Instead of doing a memcpy, this moves us to start with a blank
instruction (memset to zero) and copy the fields over one at a time.
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This is much cleaner than everything that wants a default value poking
at the bits of p->current directly.
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Adds suppport for ARB_fragment_shader_interlock. We achieve
the interlock and fragment ordering by issuing a memory fence
via sendc.
Signed-off-by: Plamena Manolova <plamena.manolova@intel.com>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
v2 (idr): Don't allow CSEL with a non-float src2.
v3 (idr): Add CSEL to fs_inst::flags_written. Suggested by Matt.
v4 (idr): Only set BRW_ALIGN_16 on Gen < 10 (suggested by Matt). Don't
reset the access mode afterwards (suggested by Samuel and Matt). Add
support for CSEL not modifying the flags to more places (requested by
Matt).
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com> [v3]
Reviewed-by: Matt Turner <mattst88@gmail.com>
Commit bit in the message descriptor (Bit 13) must be always set
to true in CNL+ for memory fence messages. It also fixes a piglit
GPU hang on cnl+ in simulation environment.
Piglit test: arb_shader_image_load_store-shader-mem-barrier
See HSD ES # 1404612949
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
This makes sure that the header-present bit of the message descriptor
is in sync with the IR instruction fields, which gives the optimizer
more control to avoid the overhead of setting up a message header when
it's possible to do so.
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This shouldn't cause any functional change at this point, it changes
SHADER_OPCODE_FIND_LIVE_CHANNEL to use the flag register specified at
the IR level instead of the hard-coded f1.0, now that it can be
represented in backend_instruction::flag_subreg. This will be
necessary for scheduling to behave correctly once more things start
making use of f1.0.
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
The PLN instruction is no more. Its functionality is now implemented
using two MAD instructions with the new native-float type. Instead of
pln(16) r20.0<1>:F r10.4<0;1,0>:F r4.0<8;8,1>:F
we now have
mad(8) acc0<1>:NF r10.7<0;1,0>:F r4.0<8;8,1>:F r10.4<0;1,0>:F
mad(8) r20.0<1>:F acc0<8;8,1>:NF r5.0<8;8,1>:F r10.5<0;1,0>:F
mad(8) acc0<1>:NF r10.7<0;1,0>:F r6.0<8;8,1>:F r10.4<0;1,0>:F
mad(8) r21.0<1>:F acc0<8;8,1>:NF r7.0<8;8,1>:F r10.5<0;1,0>:F
... and in the case of SIMD8 only the first pair of MAD instructions is
used.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This new type exposes the additional precision offered by the
accumulator register and will be used in the next patch to implement the
functionality of the PLN instruction using a pair of MAD instructions.
One weird thing to note: align1 ternary instructions may only have an
accumulator in the dst or src1 normally, but when src0's type is :NF
the accumulator is read.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Some cases weren't handled, such as stride 4 which is needed for 64-bit
operations. Presumably fixes the assertion failure mentioned in commit
2d04572038 (Revert "i965/fs: Use align1 mode on ternary instructions
on Gen10+") but who can really say since the commit neglected to list
any of them!
Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>
v2: Fix alignment style (Topi Pohjolainen)
(Jason Ekstrand)
- Enable bit_size parameter to scattered messages to enable different
bitsizes byte/word/dword.
- Remove use of brw_send_indirect_scattered_message in favor of
brw_send_indirect_surface_message.
- Move scattered messages to surface messages namespace.
- Assert align1 for scattered messages and assume Gen8+.
- Inline brw_set_dp_byte_scattered_read.
v3: (Jason Ekstrand)
- Use renamed brw_byte_scattered_data_element_from_bit_size method
- Assert scattered read for Gen8+ and Haswell.
- Use conditional expresion at components_read.
- Include comment about params for scattered opcodes.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
v2: (Jason Ekstrand)
- Enable bit_size parameter to scattered messages to enable different
bitsizes byte/word/dword.
- Remove use of brw_send_indirect_scattered_message in favor of
brw_send_indirect_surface_message.
- Move scattered messages to surface messages namespace.
- Assert align1 for scattered messages and assume Gen8+.
- Inline brw_set_dp_byte_scattered_write.
v3: - Remove leftover newline (Topi Pohjolainen)
- Rename brw_data_size to brw_scattered_data_element and use
defines instead of an enum (Jason Ekstrand)
- Assert scattered write for Gen8+ and Haswell (Jason Ekstrand)
Signed-off-by: Jose Maria Casanova Crespo <jmcasanova@igalia.com>
Signed-off-by: Alejandro Piñeiro <apinheiro@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Although it is possible to emit them directly as AND/OR on brw_fs_nir,
having a specific opcode makes it easier to remove duplicate settings
later.
v2: (Curro)
- Set thread control to 'switch' when using the control register
- Use a single SHADER_OPCODE_RND_MODE opcode taking an immediate
with the rounding mode.
- Avoid magic numbers setting rounding mode field at control register.
v3: (Curro)
- Remove redundant and add missing whitespace lines.
- Match printing instruction to IR opcode "rnd_mode"
v4: (Topi Pohjolainen)
- Fix code style.
Signed-off-by: Alejandro Piñeiro <apinheiro@igalia.com>
Signed-off-by: Jose Maria Casanova Crespo <jmcasanova@igalia.com>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
We have had a feature in codegen for some time that tries to
automatically infer the execution size of an instruction from the width
of its destination. For things such as fixed function GS, clipper, and
SF programs, this is very useful because they tend to have lots of
hand-rolled register setup and trying to specify the exec size all the
time would be prohibitive. For things that come from a higher-level IR,
however, it's easier to just set the right size all the time and the
automatic exec sizes can, in fact, cause problems. This commit makes it
optional while enabling it by default.
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
We're not using broadcast for any 32-bit types right now since we mostly
use it for emit_uniformize on 32-bit buffer indices. However, SPIR-V
subgroups are going to need it for 64-bit so let's make it work.
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
This means we have to drop const from a variable but it also means that
100% of the code which deals with the offset limit is in one place.
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
These restrictions effectively already existed due to the way we use
indirect sources but weren't being directly enforced.
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
The PRM says "The execution size must be 1." In 73137997e2, the
execution size was set to 1 when it should have been BRW_EXECUTE_1
(which maps to 0). Later, in dc2d3a7f5c, JMPI was used for
line AA on gen6 and earlier and we started manually stomping the
exeution size to BRW_EXECUTE_1 in the generator. This commit fixes the
original bug and makes brw_JMPI just do the right thing.
Reviewed-by: Matt Turner <mattst88@gmail.com>
Fixes: 73137997e2
