Marcelina Kościelnicka
2f8541a92e
opt_expr: Fix X and CO outputs for $alu identity-mapping rules.
2020-04-16 11:48:29 +02:00
Marcelina Kościelnicka
6c16fd760b
opt_expr: Add more $alu optimizations.
...
Detect the places in the $alu where the carry bit is constant (due to
const A[i] == B[i] ^ BI) and split it into smaller $alu at these points.
Also, make the existing const-carry detection for low bits more generic
(now handles cases where both BI and CI are constant, but not equal to
one another).
Fixes #1912 .
2020-04-14 21:48:13 +02:00
Marcelina Kościelnicka
840bb17089
opt_expr: Optimize multiplications with low 0 bits in operands.
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Fixes #1500 .
2020-04-13 16:52:22 +02:00
Eddie Hung
956ecd48f7
kernel: big fat patch to use more ID::*, otherwise ID(*)
2020-04-02 09:51:32 -07:00
Eddie Hung
37f42fe102
Merge pull request #1845 from YosysHQ/eddie/kernel_speedup
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kernel: speedup by using more pass-by-const-ref
2020-04-02 07:13:33 -07:00
Eddie Hung
c90324662c
Merge pull request #1828 from YosysHQ/eddie/celltypes_speedup
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kernel: share a single CellTypes within a pass
2020-04-01 14:17:45 -07:00
Eddie Hung
4ae7f3a8ed
Merge pull request #1790 from YosysHQ/eddie/opt_expr_xor
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opt_expr: optimise $xor/$xnor/$_XOR_/$_XNOR_ -s with constant inputs
2020-04-01 14:17:01 -07:00
Eddie Hung
4d897975a8
Code review fixes
2020-03-30 08:22:46 -07:00
Eddie Hung
0c0dc4ffc3
opt_expr: fix failing $xnor test
2020-03-20 14:39:08 -07:00
Eddie Hung
af16ca9dd4
opt_expr: fix missing brace
2020-03-20 09:17:53 -07:00
Eddie Hung
01f9aabc2f
opt_expr: extend to $xnor and $_XNOR_
2020-03-19 16:56:39 -07:00
Eddie Hung
ee5995641e
opt_expr: optimise 1-bit $xor or $_XOR_ with constant input
2020-03-19 16:33:54 -07:00
Eddie Hung
8d1fa0e3b9
opt_expr: remove redundant
2020-03-19 14:34:27 -07:00
Eddie Hung
213a895589
opt_expr: optimise $sub when both A[i] and B[i] == 1'b1
2020-03-19 14:34:10 -07:00
Eddie Hung
a8e5d0c402
opt_expr: optimise for identity $alu-s just like $add/$sub
2020-03-19 14:24:55 -07:00
Eddie Hung
7ad7f41bc5
kernel: share a single CellTypes within a pass
2020-03-18 12:21:40 -07:00
Eddie Hung
432a09af80
kernel: SigSpec use more const& + overloads to prevent implicit SigSpec
2020-03-13 08:17:39 -07:00
Alyssa Milburn
e709fd3da1
Fix opt_expr.eqneq.cmpzero debug print
2019-12-15 20:40:38 +01:00
Clifford Wolf
a67d63714b
Fix handling of z_digit "?" and fix optimization of cmp with "z"
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Signed-off-by: Clifford Wolf <clifford@clifford.at>
2019-09-13 13:39:39 +02:00
Eddie Hung
9245f0d3f5
Copy-paste typo
2019-08-22 08:43:44 -07:00
Eddie Hung
6f971470f8
Respect opt_expr -keepdc as per @cliffordwolf
2019-08-22 08:37:27 -07:00
Eddie Hung
379f33af54
Handle $shift and Y_WIDTH > 1 as per @cliffordwolf
2019-08-22 08:22:23 -07:00
Eddie Hung
9e31f01b34
Add cover()
2019-08-22 08:06:24 -07:00
Eddie Hung
d0ffe7544c
Canonical form
2019-08-22 08:05:01 -07:00
Eddie Hung
d3a212ff91
opt_expr to trim A port of $shiftx if Y_WIDTH == 1
2019-08-21 21:53:55 -07:00
Clifford Wolf
2a78a1fd00
Merge pull request #1283 from YosysHQ/clifford/fix1255
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Fix various NDEBUG compiler warnings
2019-08-17 15:07:16 +02:00
Eddie Hung
eae5a6b12c
Use ID::keep more liberally too
2019-08-15 14:51:12 -07:00
Eddie Hung
52355f5185
Use more ID::{A,B,Y,blackbox,whitebox}
2019-08-15 14:50:10 -07:00
Clifford Wolf
49301b733e
Merge branch 'master' into clifford/fix1255
2019-08-15 22:44:38 +02:00
Eddie Hung
6cd8cace0c
Fix
2019-08-15 11:25:42 -07:00
Eddie Hung
467c34eff0
Convert a few more to ID
2019-08-15 10:24:35 -07:00
Clifford Wolf
85b0b2c589
Merge branch 'master' into clifford/ids
2019-08-15 10:22:59 +02:00
Clifford Wolf
0c5db07cd6
Fix various NDEBUG compiler warnings, closes #1255
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Signed-off-by: Clifford Wolf <clifford@clifford.at>
2019-08-13 13:29:03 +02:00
Eddie Hung
88d5185596
Merge remote-tracking branch 'origin/master' into eddie/fix_1262
2019-08-11 21:13:40 -07:00
Clifford Wolf
6995914f3f
Use ID() macro in all of passes/opt/
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This was obtained by running the following SED command in passes/opt/
and then using "meld foo.cc foo.cc.orig" to manually fix all resulting
compiler errors.
sed -i.orig -r 's/"\\\\([a-zA-Z0-9_]+)"/ID(\1)/g; s/"(\$[a-zA-Z0-9_]+)"/ID(\1)/g;' *.cc
Signed-off-by: Clifford Wolf <clifford@clifford.at>
2019-08-11 11:39:46 +02:00
Eddie Hung
282cc77604
Wrong way around
2019-08-10 11:55:00 -07:00
Eddie Hung
02b0d328ad
cover_list -> cover as per @cliffordwolf
2019-08-10 08:26:41 -07:00
Eddie Hung
849e0eeab4
Grammar
2019-08-09 12:43:21 -07:00
Eddie Hung
31f6d74552
Separate $alu handling
2019-08-09 12:13:32 -07:00
Eddie Hung
9f1b82f594
opt_expr -fine to trim LSBs of $alu too
2019-08-09 10:32:12 -07:00
Eddie Hung
e6d5147214
Merge remote-tracking branch 'origin/master' into eddie/cleanup
2019-08-07 11:11:50 -07:00
Eddie Hung
43081337fa
Cleanup opt_expr.cc
2019-08-06 16:04:21 -07:00
Eddie Hung
bfc7164af7
Move LSB-trimming functionality from wreduce to opt_expr
2019-08-06 15:25:50 -07:00
Clifford Wolf
42190207b4
Improve opt_expr and opt_clean handling of (partially) undriven and/or unused wires, fixes #981
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Signed-off-by: Clifford Wolf <clifford@clifford.at>
2019-05-03 14:25:01 +02:00
Clifford Wolf
9d117eba9d
Add handling of init attributes in "opt_expr -undriven"
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Signed-off-by: Clifford Wolf <clifford@clifford.at>
2019-04-30 14:46:12 +02:00
Clifford Wolf
e158ea2097
Add log_debug() framework
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Signed-off-by: Clifford Wolf <clifford@clifford.at>
2019-04-22 17:25:52 +02:00
Clifford Wolf
f806b95ed6
Improve handling of and-with-1 and or-with-0 in opt_expr, fixes #327
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Signed-off-by: Clifford Wolf <clifford@clifford.at>
2019-03-14 20:52:00 +01:00
Clifford Wolf
0fc6e2bfcf
Merge pull request #770 from whitequark/opt_expr_cmp
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opt_expr: refactor and improve simplification of comparisons
2019-01-02 17:34:04 +01:00
whitequark
bf8db55ef3
opt_expr: improve simplification of comparisons with large constants.
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The idea behind this simplification is that a N-bit signal X being
compared with an M-bit constant where M>N and the constant has Nth
or higher bit set, it either always succeeds or always fails.
However, the existing implementation only worked with one-hot signals
for some reason. It also printed incorrect messages.
This commit adjusts the simplification to have as much power as
possible, and fixes other bugs.
2019-01-02 15:45:28 +00:00
whitequark
efa278e232
Fix typographical and grammatical errors and inconsistencies.
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The initial list of hits was generated with the codespell command
below, and each hit was evaluated and fixed manually while taking
context into consideration.
DIRS="kernel/ frontends/ backends/ passes/ techlibs/"
DIRS="${DIRS} libs/ezsat/ libs/subcircuit"
codespell $DIRS -S *.o -L upto,iff,thru,synopsys,uint
More hits were found by looking through comments and strings manually.
2019-01-02 13:12:17 +00:00