openpower-isa.git
2 years agomisnamed instruction, lfiwzx
Luke Kenneth Casson Leighton [Sat, 8 Oct 2022 09:10:15 +0000 (10:10 +0100)]
misnamed instruction, lfiwzx

2 years agomore work on inssort. add useful reg-dump in ISACaller
Luke Kenneth Casson Leighton [Fri, 7 Oct 2022 12:47:03 +0000 (13:47 +0100)]
more work on inssort. add useful reg-dump in ISACaller

2 years agonope. failfirst needs to always save the result, but truncate VL *after*.
Luke Kenneth Casson Leighton [Thu, 6 Oct 2022 21:41:04 +0000 (22:41 +0100)]
nope.  failfirst needs to always save the result, but truncate VL *after*.
https://bugs.libre-soc.org/show_bug.cgi?id=936

2 years agofix fail-first to exclude failed element in VLi=0 mode
Luke Kenneth Casson Leighton [Thu, 6 Oct 2022 19:19:42 +0000 (20:19 +0100)]
fix fail-first to exclude failed element in VLi=0 mode

2 years agosort out CROPs fail-first in ISACaller. needed to take a copy of CR
Luke Kenneth Casson Leighton [Thu, 6 Oct 2022 17:34:38 +0000 (18:34 +0100)]
sort out CROPs fail-first in ISACaller.  needed to take a copy of CR
for when sv.cmp (and other pseudocode) *overwrites* CR and it needs
restoring (when VLI=0).  also needed to identify 3-bit and 5-bit
ffirst mode, and extract bottom 2 bits of BF

2 years agomake fail-first cope with sv.cmp which uses CR[BF]
Luke Kenneth Casson Leighton [Thu, 6 Oct 2022 16:26:24 +0000 (17:26 +0100)]
make fail-first cope with sv.cmp which uses CR[BF]

2 years agoadd insert sort svp64 test
Luke Kenneth Casson Leighton [Thu, 6 Oct 2022 14:59:54 +0000 (15:59 +0100)]
add insert sort svp64 test

2 years agosearch for BF in registers to over-ride Vector lookup into CR Register
Luke Kenneth Casson Leighton [Thu, 6 Oct 2022 14:58:11 +0000 (15:58 +0100)]
search for BF in registers to over-ride Vector lookup into CR Register
CR[32+BF...] is used, so it is more complex

2 years agostarting to add sv.cmp support and failfirst, had to add
Luke Kenneth Casson Leighton [Thu, 6 Oct 2022 13:36:23 +0000 (14:36 +0100)]
starting to add sv.cmp support and failfirst, had to add
SVMode to SVP64RMModeDecode to identify the different RM modes first

2 years agoadd PredicateBaseRM decode to CR Ops Simple mode as well as ff=3-bit
Luke Kenneth Casson Leighton [Thu, 6 Oct 2022 12:16:28 +0000 (13:16 +0100)]
add PredicateBaseRM decode to CR Ops Simple mode as well as ff=3-bit

2 years agoadd vli mode to ff=5 CR ops
Luke Kenneth Casson Leighton [Thu, 6 Oct 2022 11:57:57 +0000 (12:57 +0100)]
add vli mode to ff=5 CR ops

2 years agowhoops must only be PredicateBaseRM in CROpFF5RM
Luke Kenneth Casson Leighton [Thu, 6 Oct 2022 11:51:42 +0000 (12:51 +0100)]
whoops must only be PredicateBaseRM in CROpFF5RM

2 years agoadd sv.cmp (ffirst-5) decode/encode asm support
Luke Kenneth Casson Leighton [Thu, 6 Oct 2022 11:43:00 +0000 (12:43 +0100)]
add sv.cmp (ffirst-5) decode/encode asm support
* sv/trans/svp64.py needed a totally different ffirst handling
* CROpFF5RM needs to derive from FFPRRc0BaseRM and PredicateWidthBaseRM

2 years agoslightly different crops failfirst mode bits
Luke Kenneth Casson Leighton [Thu, 6 Oct 2022 11:18:30 +0000 (12:18 +0100)]
slightly different crops failfirst mode bits

2 years agoadd sv.cmp and try fail-first test_pysvp64dist.py
Luke Kenneth Casson Leighton [Thu, 6 Oct 2022 10:53:59 +0000 (11:53 +0100)]
add sv.cmp and try fail-first test_pysvp64dist.py

2 years agoremove complaints about standard Cray-style Vectors for the past 40 years
Luke Kenneth Casson Leighton [Sun, 2 Oct 2022 11:38:32 +0000 (12:38 +0100)]
remove complaints about standard Cray-style Vectors for the past 40 years
being able to have VL set to zero dynamically at runtime.
it is not appropriate to have complaints about 40-year-old standard
canonical behaviour of Cray Vectors in source code comments

VL=0 being set dynamically at runtime based on an algorithm input
sets the operations to nop because that is expected behaviour.
to not have VL=0 would be catastrophically inconvenient: it would
require either Illegal-Instruction traps to be raised, or Condition
Codes to be set and followed up with instructions to test and
branch for the dynamic condition when RA was zero, or to pre-test
for RA or CTR pre-being-zero prior to entry into a loop.

Data-Dependent Fail-First would become irrevocably damaged as well
as it is possible for VL to be set to zero at that time (first
test fails)

sv.bc would also be irrevocably damaged as it would no longer
be possible in VLSET mode to have VL become truncated to zero
dynamically based on a Condition Code.

in all it is pretty catastrophic to the entire Cray-Vector paradigm
and would severely damage SimpleV to disallow VL=0 purely for
arbitrary "convenience"

2 years agocomments for why preinc is called for svstep
Luke Kenneth Casson Leighton [Sun, 2 Oct 2022 02:29:39 +0000 (03:29 +0100)]
comments for why preinc is called for svstep

2 years agocomment out selectableint getitem logs
Luke Kenneth Casson Leighton [Sun, 2 Oct 2022 02:21:08 +0000 (03:21 +0100)]
comment out selectableint getitem logs

2 years agoskip svstate_pre_inc on svremap
Luke Kenneth Casson Leighton [Sat, 1 Oct 2022 23:35:08 +0000 (00:35 +0100)]
skip svstate_pre_inc on svremap
should not be needed

2 years agono svstate instruction
Luke Kenneth Casson Leighton [Sat, 1 Oct 2022 23:26:23 +0000 (00:26 +0100)]
no svstate instruction

2 years agosvstep calls SVSTATE_NEXT so needs svstate_pre_inc
Luke Kenneth Casson Leighton [Sat, 1 Oct 2022 23:24:25 +0000 (00:24 +0100)]
svstep calls SVSTATE_NEXT so needs svstate_pre_inc
setvl no longer calls SVSTATE_NEXT so does not

2 years agoremove special case from setvl calling SVSTATE_NEXT,
Luke Kenneth Casson Leighton [Sat, 1 Oct 2022 23:10:15 +0000 (00:10 +0100)]
remove special case from setvl calling SVSTATE_NEXT,
only accessible through svstep now

2 years agoreplacing setvl-svstep with just svstep
Luke Kenneth Casson Leighton [Sat, 1 Oct 2022 21:40:21 +0000 (22:40 +0100)]
replacing setvl-svstep with just svstep

2 years agoreplacing setvl-svstep with just svstep
Luke Kenneth Casson Leighton [Sat, 1 Oct 2022 21:36:04 +0000 (22:36 +0100)]
replacing setvl-svstep with just svstep

2 years agoreplacing setvl-svstep with just svstep
Luke Kenneth Casson Leighton [Sat, 1 Oct 2022 21:27:25 +0000 (22:27 +0100)]
replacing setvl-svstep with just svstep

2 years agocomments
Luke Kenneth Casson Leighton [Sat, 1 Oct 2022 16:00:06 +0000 (17:00 +0100)]
comments

2 years agocomments
Luke Kenneth Casson Leighton [Sat, 1 Oct 2022 15:55:13 +0000 (16:55 +0100)]
comments

2 years agominor cleanup in ISACaller on result handling
Luke Kenneth Casson Leighton [Sat, 1 Oct 2022 15:44:56 +0000 (16:44 +0100)]
minor cleanup in ISACaller on result handling
create a dictionary matched with output reg names, adapt handle_carry
handle_overflow etc. to use it. mostly

2 years agosimplify ISACaller execute_one
Luke Kenneth Casson Leighton [Sat, 1 Oct 2022 13:43:24 +0000 (14:43 +0100)]
simplify ISACaller execute_one

2 years agosimplify setting default SVSHAPE SPRs to zero
Luke Kenneth Casson Leighton [Sat, 1 Oct 2022 13:21:44 +0000 (14:21 +0100)]
simplify setting default SVSHAPE SPRs to zero

2 years agoincrease pcdec. output compression by skipping impossible codes
Jacob Lifshay [Sat, 1 Oct 2022 00:10:44 +0000 (17:10 -0700)]
increase pcdec. output compression by skipping impossible codes

2 years agoprefix codes tests pass
Jacob Lifshay [Fri, 30 Sep 2022 23:08:53 +0000 (16:08 -0700)]
prefix codes tests pass

2 years agono need for ctr mode on sv.bc
Luke Kenneth Casson Leighton [Fri, 30 Sep 2022 17:39:45 +0000 (18:39 +0100)]
no need for ctr mode on sv.bc

2 years agoctr mode not needed, just use unconditional CTR dec
Luke Kenneth Casson Leighton [Fri, 30 Sep 2022 17:37:35 +0000 (18:37 +0100)]
ctr mode not needed, just use unconditional CTR dec

2 years agoset srcstep/dststep to zero in StepLoop (ISACaller) at loopend
Luke Kenneth Casson Leighton [Fri, 30 Sep 2022 13:39:27 +0000 (14:39 +0100)]
set srcstep/dststep to zero in StepLoop (ISACaller) at loopend
see if a different style of looping can be used

2 years agoadd sv.bc vlset-inverted test
Luke Kenneth Casson Leighton [Fri, 30 Sep 2022 13:03:20 +0000 (14:03 +0100)]
add sv.bc vlset-inverted test

2 years agocomments/variables-cleanup
Luke Kenneth Casson Leighton [Fri, 30 Sep 2022 12:59:05 +0000 (13:59 +0100)]
comments/variables-cleanup

2 years agoadd sv.bc vlset-inverted test
Luke Kenneth Casson Leighton [Fri, 30 Sep 2022 11:28:19 +0000 (12:28 +0100)]
add sv.bc vlset-inverted test
this one inverts all the logic (some instead of all, LE instead of GT,
VL-truncate if FAIL)
and thus can swap the success-fail branch point.  avoids one branch in loops

2 years agoadd sv.bc/vs - VLset - test. truncates VL at the vector-condition-fail point
Luke Kenneth Casson Leighton [Fri, 30 Sep 2022 10:56:55 +0000 (11:56 +0100)]
add sv.bc/vs - VLset - test. truncates VL at the vector-condition-fail point

2 years agoadd code-comments in variance_svp64_real.s on how to use sv.bc/ctr/all
Luke Kenneth Casson Leighton [Fri, 30 Sep 2022 09:47:41 +0000 (10:47 +0100)]
add code-comments in variance_svp64_real.s on how to use sv.bc/ctr/all

2 years agoadd new sv.bc CTR-loop test, subtracts VL from CTR
Luke Kenneth Casson Leighton [Fri, 30 Sep 2022 09:37:57 +0000 (10:37 +0100)]
add new sv.bc CTR-loop test, subtracts VL from CTR

2 years agowhitespace
Luke Kenneth Casson Leighton [Fri, 30 Sep 2022 08:14:26 +0000 (09:14 +0100)]
whitespace

2 years agouse regs variables in get_predint
Luke Kenneth Casson Leighton [Fri, 30 Sep 2022 08:12:41 +0000 (09:12 +0100)]
use regs variables in get_predint

2 years agocomments
Luke Kenneth Casson Leighton [Fri, 30 Sep 2022 08:06:58 +0000 (09:06 +0100)]
comments

2 years agofix pcdec. assembly -- merge into va_form() since it's no longer VA2-form
Jacob Lifshay [Fri, 30 Sep 2022 03:49:16 +0000 (20:49 -0700)]
fix pcdec. assembly -- merge into va_form() since it's no longer VA2-form

2 years agofix pcdec.'s form
Jacob Lifshay [Fri, 30 Sep 2022 03:46:38 +0000 (20:46 -0700)]
fix pcdec.'s form

2 years agorewrite pcdec. pseudocode to work better for JPEG
Jacob Lifshay [Fri, 30 Sep 2022 03:17:50 +0000 (20:17 -0700)]
rewrite pcdec. pseudocode to work better for JPEG

the pcdec. unittests aren't updated yet

2 years agoadd lookup table generation for JPEG decode
Jacob Lifshay [Fri, 30 Sep 2022 01:44:47 +0000 (18:44 -0700)]
add lookup table generation for JPEG decode

2 years agoallow logging function to be overridden for Mem.log_fancy
Jacob Lifshay [Fri, 30 Sep 2022 01:44:23 +0000 (18:44 -0700)]
allow logging function to be overridden for Mem.log_fancy

2 years agoconvert svp64 bigint unittests to use TestAccumulatorBase
Jacob Lifshay [Thu, 29 Sep 2022 23:21:22 +0000 (16:21 -0700)]
convert svp64 bigint unittests to use TestAccumulatorBase

2 years agofinish changing to use adde, not addeo for bigint add
Jacob Lifshay [Thu, 29 Sep 2022 22:46:48 +0000 (15:46 -0700)]
finish changing to use adde, not addeo for bigint add

2 years agosv.adde not sv.addeo
Luke Kenneth Casson Leighton [Thu, 29 Sep 2022 18:00:30 +0000 (19:00 +0100)]
sv.adde not sv.addeo

2 years agodestination for maddedu and divmod2du for RS defaults to RC for scalar
Luke Kenneth Casson Leighton [Thu, 29 Sep 2022 14:06:52 +0000 (15:06 +0100)]
destination for maddedu and divmod2du for RS defaults to RC for scalar

2 years agowowser, complex. implementing maddedu implicit RC/RS rules.
Luke Kenneth Casson Leighton [Thu, 29 Sep 2022 13:59:45 +0000 (14:59 +0100)]
wowser, complex. implementing maddedu implicit RC/RS rules.
still TODO
    <!-- bit 8 of EXTRA is clear: RS.[s|v]=RT.[s|v]+MAXVL
    <!-- bit 8 of EXTRA is set  : RS.[s|v]=RC.[s|v]
actually it is currently "if RC is scalar then RS=RC" which is more
sensible

2 years agoadd carry-roll-over-vector-mul-with-add (!) unit test
Luke Kenneth Casson Leighton [Thu, 29 Sep 2022 13:57:26 +0000 (14:57 +0100)]
add carry-roll-over-vector-mul-with-add (!) unit test
test_caller_svp64_bigint.py
https://bugs.libre-soc.org/show_bug.cgi?id=937

2 years agocomments
Luke Kenneth Casson Leighton [Thu, 29 Sep 2022 11:09:43 +0000 (12:09 +0100)]
comments

2 years agoadd shift-left and shift-right scalar-to-vector tests
Luke Kenneth Casson Leighton [Thu, 29 Sep 2022 10:56:20 +0000 (11:56 +0100)]
add shift-left and shift-right scalar-to-vector tests

2 years agoupdate iterators in ISACaller, not used yet
Luke Kenneth Casson Leighton [Thu, 29 Sep 2022 01:39:55 +0000 (02:39 +0100)]
update iterators in ISACaller, not used yet

2 years agorename madded->maddedu for consistency with PowerISA maddhdu instruction
Jacob Lifshay [Thu, 29 Sep 2022 03:10:05 +0000 (20:10 -0700)]
rename madded->maddedu for consistency with PowerISA maddhdu instruction

2 years agorename divrem2du->divmod2du for consistency with PowerISA mod* instructions
Jacob Lifshay [Thu, 29 Sep 2022 03:05:02 +0000 (20:05 -0700)]
rename divrem2du->divmod2du for consistency with PowerISA mod* instructions

2 years agoadd bigint tests and fix madded pseudocode
Jacob Lifshay [Thu, 29 Sep 2022 02:46:54 +0000 (19:46 -0700)]
add bigint tests and fix madded pseudocode

2 years agoadd bigint ops
Jacob Lifshay [Thu, 29 Sep 2022 02:46:15 +0000 (19:46 -0700)]
add bigint ops

2 years agofill out dsld/dsrd pseudocode
Jacob Lifshay [Thu, 29 Sep 2022 02:45:00 +0000 (19:45 -0700)]
fill out dsld/dsrd pseudocode

2 years agoadd missing DRAFT comment
Jacob Lifshay [Thu, 29 Sep 2022 02:43:16 +0000 (19:43 -0700)]
add missing DRAFT comment

2 years agofix test_minor_30
Jacob Lifshay [Thu, 29 Sep 2022 02:39:27 +0000 (19:39 -0700)]
fix test_minor_30

2 years agoformat code
Jacob Lifshay [Thu, 29 Sep 2022 02:39:07 +0000 (19:39 -0700)]
format code

2 years agoclean up bigint instruction naming
Jacob Lifshay [Thu, 29 Sep 2022 02:33:00 +0000 (19:33 -0700)]
clean up bigint instruction naming

2 years agoremove unnecesary commented code
Jacob Lifshay [Thu, 29 Sep 2022 02:29:20 +0000 (19:29 -0700)]
remove unnecesary commented code

2 years agoadd unofficial and comment2 fields to minor_31.csv
Jacob Lifshay [Thu, 29 Sep 2022 02:08:07 +0000 (19:08 -0700)]
add unofficial and comment2 fields to minor_31.csv

2 years agosrcstep
Luke Kenneth Casson Leighton [Wed, 28 Sep 2022 23:49:46 +0000 (00:49 +0100)]
srcstep

2 years agorename iterators init function
Luke Kenneth Casson Leighton [Wed, 28 Sep 2022 21:14:17 +0000 (22:14 +0100)]
rename iterators init function

2 years agoredundant comment
Luke Kenneth Casson Leighton [Wed, 28 Sep 2022 21:04:16 +0000 (22:04 +0100)]
redundant comment

2 years agosplit out svstate update in ISACaller
Luke Kenneth Casson Leighton [Wed, 28 Sep 2022 21:00:23 +0000 (22:00 +0100)]
split out svstate update in ISACaller

2 years agomove failfirst check to separate function in ISACaller
Luke Kenneth Casson Leighton [Wed, 28 Sep 2022 20:44:54 +0000 (21:44 +0100)]
move failfirst check to separate function in ISACaller

2 years agonew revision of dsld
Luke Kenneth Casson Leighton [Wed, 28 Sep 2022 20:00:10 +0000 (21:00 +0100)]
new revision of dsld

2 years agoadd double-sld pseudocode, first draft
Luke Kenneth Casson Leighton [Wed, 28 Sep 2022 18:33:48 +0000 (19:33 +0100)]
add double-sld pseudocode, first draft

2 years agoadd limit argument to MASK() helper
Luke Kenneth Casson Leighton [Wed, 28 Sep 2022 18:33:00 +0000 (19:33 +0100)]
add limit argument to MASK() helper

2 years agoadd Z23 shift-mode fields.txt
Luke Kenneth Casson Leighton [Wed, 28 Sep 2022 18:04:06 +0000 (19:04 +0100)]
add Z23 shift-mode fields.txt

2 years agobugfix reset remaps and get subvl early
Luke Kenneth Casson Leighton [Wed, 28 Sep 2022 16:20:07 +0000 (17:20 +0100)]
bugfix reset remaps and get subvl early

2 years agocomments on horizontal-or
Luke Kenneth Casson Leighton [Wed, 28 Sep 2022 13:34:21 +0000 (14:34 +0100)]
comments on horizontal-or

2 years agomake matrix horizontal-remap example more generic
Luke Kenneth Casson Leighton [Wed, 28 Sep 2022 13:27:21 +0000 (14:27 +0100)]
make matrix horizontal-remap example more generic

2 years agoadd horizontal-or-reduction example that thoroughly abuses the way
Luke Kenneth Casson Leighton [Wed, 28 Sep 2022 13:18:42 +0000 (14:18 +0100)]
add horizontal-or-reduction example that thoroughly abuses the way
that Matrix REMAP works, ignoring the B Matrix entirely

2 years agowhoops VL incorrect in svshape markdown RTL for matrix REMAP
Luke Kenneth Casson Leighton [Wed, 28 Sep 2022 13:11:55 +0000 (14:11 +0100)]
whoops VL incorrect in svshape markdown RTL for matrix REMAP

2 years agoextracting demo JPEG bitstream works
Jacob Lifshay [Wed, 28 Sep 2022 02:25:46 +0000 (19:25 -0700)]
extracting demo JPEG bitstream works

2 years agoadd unpack predicated unit test
Luke Kenneth Casson Leighton [Tue, 27 Sep 2022 16:53:00 +0000 (17:53 +0100)]
add unpack predicated unit test

2 years agohack to check skipping on predicate being all-zero.
Luke Kenneth Casson Leighton [Tue, 27 Sep 2022 16:25:05 +0000 (17:25 +0100)]
hack to check skipping on predicate being all-zero.
HOWEVER... this will not work on sv.branches

2 years agosort out predicate loop-skip on pack/unpack
Luke Kenneth Casson Leighton [Tue, 27 Sep 2022 15:40:32 +0000 (16:40 +0100)]
sort out predicate loop-skip on pack/unpack

2 years agoadapt loops to include predicate-mask skipping in ISACaller
Luke Kenneth Casson Leighton [Tue, 27 Sep 2022 14:39:18 +0000 (15:39 +0100)]
adapt loops to include predicate-mask skipping in ISACaller
currently not working, investigating (disabled for now)

2 years agofix typo
Konstantinos Margaritis [Tue, 27 Sep 2022 10:23:13 +0000 (10:23 +0000)]
fix typo

2 years agocomment out more debug messages and reference C function
Konstantinos Margaritis [Tue, 27 Sep 2022 10:08:09 +0000 (10:08 +0000)]
comment out more debug messages and reference C function

2 years agocomment out debug messages
Konstantinos Margaritis [Tue, 27 Sep 2022 10:07:02 +0000 (10:07 +0000)]
comment out debug messages

2 years agoWorking version of VP8 DCT4x4 in SVP64
Konstantinos Margaritis [Tue, 27 Sep 2022 10:04:49 +0000 (10:04 +0000)]
Working version of VP8 DCT4x4 in SVP64

2 years agoremove unused prototypes
Konstantinos Margaritis [Tue, 27 Sep 2022 10:03:12 +0000 (10:03 +0000)]
remove unused prototypes

2 years agoadd WIP jpeg decoder demo
Jacob Lifshay [Tue, 27 Sep 2022 04:05:38 +0000 (21:05 -0700)]
add WIP jpeg decoder demo

this includes a tiny test jpeg that's <2kB, so should be fine to be in git.

2 years agoadd more tests and fix missing corner case
Jacob Lifshay [Mon, 26 Sep 2022 23:01:03 +0000 (16:01 -0700)]
add more tests and fix missing corner case

2 years agopcdec.: change CR0.eq to be early-stop-needed to fit with data-dependent fail-first
Jacob Lifshay [Mon, 26 Sep 2022 22:59:33 +0000 (15:59 -0700)]
pcdec.: change CR0.eq to be early-stop-needed to fit with data-dependent fail-first

2 years agoadd checks for pcdec. once=1
Jacob Lifshay [Mon, 26 Sep 2022 22:20:13 +0000 (15:20 -0700)]
add checks for pcdec. once=1

2 years agomore cleanup after swapping RA/RB for pcdec.
Jacob Lifshay [Mon, 26 Sep 2022 21:50:34 +0000 (14:50 -0700)]
more cleanup after swapping RA/RB for pcdec.

2 years agoclean up after lkcl swapped RA/RB for pcdec.
Jacob Lifshay [Mon, 26 Sep 2022 21:48:55 +0000 (14:48 -0700)]
clean up after lkcl swapped RA/RB for pcdec.

2 years agoskipping on maskedout elements de-restricted when substep zero
Luke Kenneth Casson Leighton [Mon, 26 Sep 2022 21:44:21 +0000 (22:44 +0100)]
skipping on maskedout elements de-restricted when substep zero
makes predicate skipping work in pack mode