Fixes metadata guess when instructions in the program specify a
destination register with non-zero reg_offset and when the payload of
a LOAD_PAYLOAD spans several registers.
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
It's perfectly fine to read the second half of a register written with
force_writemask_all from a first half MOV instruction or vice versa, and
lower_load_payload shouldn't mark the whole MOV as belonging to the second
half in that case. Replicate the same metadata to both halves of the
destination when writemasking is disabled.
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
There's some commentary about how it's defined by other "modules", and
maybe that was true in 2000 when the code was added.
Reviewed-by: Eric Anholt <eric@anholt.net>
... and util_le{16,32}_to_cpu. I think I've used the right ones for
describing the actual operation performed (even though they're both just
"byte-swap this if I'm on big-endian").
The Linux Kernel has typedefs __le32/__be32 and friends that static
analysis tools can use to check that byte-orderings are correct. It
might be interesting to apply that here as well.
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
This corrects a trivial error introduced in commit
19252fee46. That patch was merged recently
and omits one condition (that 'samples' is greater than zero) in one of
the error checks. That error will definitely cause regressions.
Also corrects the reference to the specification above the error check,
which was wrongly quoting OpenGL instead of OpenGL-ES.
Reviewed-by: Martin Peres <martin.peres@linux.intel.com>
When under dispatch_width=16 the previous code would allocate 2 registers for
the payload when only one is needed. This manifested itself through bugs on SKL
which needs to mess with this instruction.
Ken though this might impact shader-db, but apparently it doesn't
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89118
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88999
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Tested-by: Timo Aaltonen <timo.aaltonen@canonical.com>
I initially wrote this based on the "(('fneg', ('fneg', a)), a)" above,
but we can generalize it and make it more potentially useful. In the
specific original case of a 0 for our new 'a' argument, it'll get further
algebraic optimization once the 0 is an argument to the new add.
No shader-db effects.
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
We have some useful optimizations to drop things like 'ine a, 0' on a
boolean argument, but if 'a' came from logical operations on bools, it
couldn't tell. These kinds of constructs appear as a result of TGSI->NIR
quite frequently (at least with if flattening), so being a little more
aggressive in detecting booleans can pay off.
v2: Add ixor as a booleanness-preserving op (Suggestion by Connor).
vc4 results:
total instructions in shared programs: 40207 -> 39881 (-0.81%)
instructions in affected programs: 6677 -> 6351 (-4.88%)
Reviewed-by: Matt Turner <mattst88@gmail.com> (v1)
Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
vc4 was already cleaning these up, but it does shave 4 NIR instructions in
shader-db.
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
Spotted by Coverity.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
If there is no pci-id, which is valid for vc4 and freedreno, just emit
an info msg. Keep malformed but existing pci-id's as a warning.
Mostly just to clean up a warning that confuses users for the non-pci
devices.
Signed-off-by: Rob Clark <robclark@freedesktop.org>
I never actually implemented the stubbed out fence stuff back in the
early days. Fix that.
We'll need a few libdrm_freedreno changes to handle timeout properly,
so ignore that for now to avoid a libdrm_freedreno dependency bump.
Signed-off-by: Rob Clark <robclark@freedesktop.org>
The brw_imm_ud will yield a HW_REG which then will introduce a barrier
for certain optimization opportunities.
No piglit regressions seen with gen8 (simd8vs).
Suggested-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
For fragment programs, we pull this mask from the payload header. The same
mask doesn't exist for compute shaders, so we set all bits to enabled.
Previously we were setting 0xff to support SIMD8 VS, but with CS we
support SIMD16, and therefore we change this to 0xffff.
Related commits for SIMD8 VS:
commit d9cd982d55
Author: Ben Widawsky <benjamin.widawsky@intel.com>
Date: Sun Feb 15 20:06:59 2015 -0800
i965/simd8vs: Fix SIMD8 atomics
commit 4a95be9772
Author: Jordan Justen <jordan.l.justen@intel.com>
Date: Tue Feb 17 09:57:35 2015 -0800
i965/simd8vs: Fix SIMD8 atomics (read-only)
Note: this mask is ANDed with the execution mask, so some channels may not end
up issuing the atomic operation.
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Because the TGSI interface creates merges for each instruction source
and then splits them back out, there are a lot of unnecessary
merge/split pairs which do essentially nothing. The various modifier/etc
propagation doesn't know how to walk though those, so just remove them
when they're unnecessary.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Since dropping some NV_fragment_program opcodes (commits
868f95f1da, a3688d686f)
we can no longer parse all opcodes necessary for this extension, leading
to bugs (https://bugs.freedesktop.org/show_bug.cgi?id=86980).
Hence don't announce support for it in swrast (no other driver enabled it).
(Note that remnants of some NV_fp/vp extensions remain, they could be
dropped but are required as hacks for getting viewperf11 catia to run.)
Francisco Jerez
Matt Turner
Brian Paul
Eduardo Lima Mitev
Marek Olšák
Ben Widawsky
Eric Anholt
Ilia Mirkin
Rob Clark
Jordan Justen
Chia-I Wu
Roland Scheidegger