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Author SHA1 Message Date
Marcelina Kościelnicka
50d532f01c techmap/shift_shiftx: Remove the "shiftx2mux" special path. 
Our techmap rules for $shift and $shiftx cells contained a special path
that aimed to decompose the shift LSB-first instead of MSB-first in
select cases that come up in pmux lowering.  This path was needlessly
overcomplicated and contained bugs.

Instead of doing that, just switch over the main path to iterate
LSB-first (except for the specially-handled MSB for signed shifts
and overflow handling).  This also makes the code consistent with
shl/shr/sshl/sshr cells, which are already decomposed LSB-first.

Fixes #2346.
 2020-08-20 12:44:09 +02:00
Yosys Bot
93d663be62 Bump version 2020-08-19 00:10:09 +00:00
Xiretza
916028906a Ensure \A_SIGNED is never used with $shiftx 
It has no effect on the output ($shiftx doesn't perform any sign
extension whatsoever), so an attempt to use it should be caught early.
 2020-08-18 19:36:24 +02:00
Xiretza
928fd40c2e Respect \A_SIGNED for $shift 
This reflects the behaviour of $shr/$shl, which sign-extend their A
operands to the size of their output, then do a logical shift (shift in
0-bits).
 2020-08-18 19:36:24 +02:00
clairexen
22765ef0a5
Merge pull request #2339 from zachjs/display-format-0s 
Allow %0s $display format specifier
 2020-08-18 17:39:01 +02:00
clairexen
4aa0dc4dc7
Merge pull request #2338 from zachjs/const-branch-finish 
Propagate const_fold through generate blocks and branches
 2020-08-18 17:38:07 +02:00
clairexen
a9681f4e06
Merge pull request #2317 from zachjs/expand-genblock 
Fix generate scoping issues
 2020-08-18 17:37:11 +02:00
Claire Wolf
fce5f02a9d Merge branch 'zachjs-const-func-block-var' 2020-08-18 17:32:00 +02:00
Claire Wolf
7f767bf2b7 Merge branch 'const-func-block-var' of https://github.com/zachjs/yosys into zachjs-const-func-block-var 
Signed-off-by: Claire Wolf <claire@symbioticeda.com>
 2020-08-18 17:29:49 +02:00
clairexen
5ee9349647
Merge pull request #2281 from zachjs/const-real 
Allow reals as constant function parameters
 2020-08-18 17:22:20 +02:00
Yosys Bot
3cb3978ff4 Bump version 2020-08-14 00:10:13 +00:00
Dan Ravensloft
3b534a203a intel_alm: fix typo in MISTRAL_MUL27X27 cell name 2020-08-13 17:08:50 +02:00
Yosys Bot
f61d62a7bc Bump version 2020-08-13 00:10:08 +00:00
whitequark
a74a43d85d
Merge pull request #2340 from andy-knowles/cxxrtl-fix-alu-carryout 
cxxrtl.h: Fix incorrect CarryOut in alu when Bits % 32 != 0 && Invert == False
 2020-08-12 20:02:18 +00:00
Andy Knowles
5829d16fcd
cxxrtl.h: Fix incorrect CarryOut in alu() 2020-08-12 21:04:34 +02:00
Dan Ravensloft
97daf612cb intel_alm: add more megafunctions. NFC. 2020-08-12 18:39:22 +02:00
Andy Knowles
1227c3681b cxxrtl.h: Fix incorrect CarryOut in alu when Bits % 32 != 0 && Invert == False 2020-08-12 11:32:57 +02:00
Yosys Bot
04f6158bf2 Bump version 2020-08-10 09:30:51 +00:00
Zachary Snow
2ee0b8ebea Propagate const_fold through generate blocks and branches 2020-08-09 17:21:08 -04:00
Zachary Snow
96ec9acf84 Allow %0s $display format specifier 2020-08-09 17:19:49 -04:00
Marcelina Kościelnicka
9a4f420b4b Replace opt_rmdff with opt_dff. 2020-08-07 13:21:03 +02:00
Zachary Snow
c3e95eb1ab Fix generate scoping issues 
- expand_genblock defers prefixing of items within named sub-blocks
- Allow partially-qualified references to local scopes
- Handle shadowing within generate blocks
- Resolve generate scope references within tasks and functions
- Apply generate scoping to genvars
- Resolves #2214, resolves #1456
 2020-07-31 20:32:47 -06:00
Claire Wolf
c39ebe6ae0 Bump YOSYS_VER 
Signed-off-by: Claire Wolf <claire@symbioticeda.com>
 2020-07-31 20:57:41 +02:00
Marcelina Kościelnicka
18ad56ef41 Add dffunmap pass. 
To be used with backends that cannot deal with fancy FF types (like blif
or smt).
 2020-07-31 00:59:51 +02:00
Marcelina Kościelnicka
6cd135a5eb opt_expr: Remove -clkinv option, make it the default. 
Adds -noclkinv option just in case the old behavior was actually useful
to someone.
 2020-07-31 00:08:15 +02:00
Marcelina Kościelnicka
cf60699884 synth_ice40: Use opt_dff. 
The main part is converting ice40_dsp to recognize the new FF types
created in opt_dff instead of trying to recognize the mux patterns on
its own.

The fsm call has been moved upwards because the passes cannot deal with
$dffe/$sdff*, and other optimizations don't help it much anyway.
 2020-07-30 22:26:20 +02:00
Marcelina Kościelnicka
8501342fc5 synth_xilinx: Use opt_dff. 
The main part is converting xilinx_dsp to recognize the new FF types
created in opt_dff instead of trying to recognize the patterns on its
own.

The fsm call has been moved upwards because the passes cannot deal with
$dffe/$sdff*, and other optimizations don't help it much anyway.
 2020-07-30 22:26:09 +02:00
Marcelina Kościelnicka
4a05cad7f8 async2sync: Support all FF types. 2020-07-30 20:22:03 +02:00
Marcelina Kościelnicka
af6623ebb8 Add opt_dff pass. 2020-07-30 18:27:04 +02:00
Marcelina Kościelnicka
8fd43515c5 verilog_backend: Add handling for all FF types. 2020-07-30 18:22:36 +02:00
Miodrag Milanović
2f50c5af48
Merge pull request #2314 from YosysHQ/verifix_errorfix 
Verific - prevent exit yosys due to stored error
 2020-07-29 15:41:26 +02:00
Miodrag Milanovic
cc02d58194 Clear last error message 2020-07-29 15:28:33 +02:00
Marcelina Kościelnicka
dc18bf1969 opt_expr: Fix handling of $_XNOR_ cells with A = B. 
Fixes #2311.
 2020-07-29 12:41:43 +02:00
Marcelina Kościelnicka
773b056ffb ffinit: Fortify the code a bit. 
This fixes handling of messy cases involving repeatedly setting and
removing the same init bit.
 2020-07-28 17:21:15 +02:00
clairexen
45e96d5d87
Merge pull request #2301 from zachjs/for-loop-errors 
Clearer for loop error messages
 2020-07-28 14:07:26 +02:00
clairexen
66afed6f55
Merge pull request #2306 from YosysHQ/mwk/equiv_induct-undef 
equiv_induct: Fix up assumption for $equiv cells in -undef mode.
 2020-07-28 12:56:22 +02:00
Marcelina Kościelnicka
a1a0abf52a equiv_induct: Fix up assumption for $equiv cells in -undef mode. 
Before this fix, equiv_induct only assumed that one of the following is
true:

- defined value of A is equal to defined value of B
- A is undefined

This lets through valuations where A is defined, B is undefined, and
the defined (meaningless) value of B happens to match the defined value
of A.  Instead, tighten this up to OR of the following:

- defined value of A is equal to defined value of B, and B is not
  undefined
- A is undefined
 2020-07-27 18:36:13 +02:00
Dan Ravensloft
a2fb84fd0c intel_alm: direct M10K instantiation 
This reverts commit a3a90f6377.
 2020-07-27 15:39:06 +02:00
Dan Ravensloft
62311b7ec0 intel_alm: increase abc9 -W 2020-07-26 23:56:54 +02:00
clairexen
9bcde4d82b
Merge pull request #2299 from zachjs/arg-loop 
Avoid generating wires for function args which are constant
 2020-07-26 21:34:55 +02:00
Zachary Snow
58da181af9 Clearer for loop error messages 2020-07-25 10:37:16 -06:00
Zachary Snow
f69daf4830 Allow blocks with declarations within constant functions 2020-07-25 10:16:12 -06:00
Zachary Snow
59c4ad8ed3 Avoid generating wires for function args which are constant 2020-07-24 21:18:24 -06:00
Marcelina Kościelnicka
bd959d5d9e async2sync: Refactor to use FfInitVals. 2020-07-24 11:22:31 +02:00
Marcelina Kościelnicka
c9251eb26b memory_dff: Refactor to use FfInitVals. 2020-07-24 11:22:31 +02:00
Marcelina Kościelnicka
557f81cb49 proc_dlatch: Refactor to use FfInitVals. 2020-07-24 11:22:31 +02:00
Marcelina Kościelnicka
31d6107521 pmux2shift: Refactor to use FfInitVals. 2020-07-24 11:22:31 +02:00
Marcelina Kościelnicka
4d9105ccb0 wreduce: Refactor to use FfInitVals. 2020-07-24 11:22:31 +02:00
Marcelina Kościelnicka
7b1a4fc1e6 techmap: Refactor to use FfInitVals. 2020-07-24 11:22:31 +02:00
Marcelina Kościelnicka
9e72be3ae8 shregmap: Refactor to use FfInitVals. 2020-07-24 11:22:31 +02:00