c045f51a7f
Spelling fixes (larry doolittle)
2007-02-26 19:51:38 +00:00
c1333a21ef
Prevent constant mux outputs from confusing itself.
2006-11-12 01:20:45 +00:00
e0bbfa512c
Constant propagate addresses through NetRamDq read ports.
2006-04-23 04:26:13 +00:00
d97560caa7
Fix overly agressive constant propagation through MUX causing lost Z bits.
2005-09-11 02:50:51 +00:00
fd29ba3398
Reduce mux slices that are constant throughout range.
2005-08-28 22:00:39 +00:00
44fbf60885
More thorough constant propagation through MUX devices.
2005-08-28 19:51:02 +00:00
a0d69113c3
More thorough constant propagation through MUX devices.
2005-08-28 19:50:03 +00:00
177b6ffb6a
Addtrbute keys are perm_strings.
2004-02-20 18:53:33 +00:00
074dcc934a
Do not remove constants accessible to VPI.
2003-11-08 17:53:34 +00:00
fad43d78b0
Donot elide FF that has set or clr connections.
2003-10-31 02:40:06 +00:00
65c8722d72
Handle X values in constant == nets.
2003-04-25 05:06:32 +00:00
badad63ab4
All NetObj objects have lex_string base names.
2003-03-06 00:28:41 +00:00
a275133ff9
LPM objects store only their base names.
2003-02-26 01:29:24 +00:00
e941e7e805
Spelling fixes.
2003-01-30 16:23:07 +00:00
8f0c02c0fa
Spelling fixes.
2003-01-27 05:09:17 +00:00
d2ac85e2c7
Copy gate delays when doing gate delay substitutions.
2002-08-20 04:12:22 +00:00
52bf4e613f
conditional ident string using autoconfig.
2002-08-12 01:34:58 +00:00
9fc4e1eddd
Cache calculated driven value.
2002-06-25 01:33:22 +00:00
58c2e12507
Make link_drive_constant cache its results in
...
the Nexus, to improve cprop performance.
2002-06-24 01:49:38 +00:00
bfad382fd1
Carry Verilog 2001 attributes with processes,
...
all the way through to the ivl_target API.
Divide signal reference counts between rval
and lval references.
2002-05-26 01:39:02 +00:00
e6c0629626
Add language support for Verilog-2001 attribute
...
syntax. Hook this support into existing $attribute
handling, and add number and void value types.
Add to the ivl_target API new functions for access
of complex attributes attached to gates.
2002-05-23 03:08:50 +00:00
b14a0b885a
Fix bug removing pairs of ones in XOR.
2002-04-14 02:51:37 +00:00
78bb3d6f09
Comments about xor evaluation.
2002-02-03 00:06:28 +00:00
400580179f
Get sense of 1-bit == operator right.
2001-12-31 01:56:08 +00:00
874bab10e4
NetObj constructor finally requires a scope.
2001-10-28 01:14:53 +00:00
b825f8d2b2
Create a config.h.in file to hold all the config
...
junk, and support gcc 3.0. (Stephan Boettcher)
2001-07-25 03:10:48 +00:00
b3a5a0e5ab
Generate vvp code for GT and GE comparisons.
2001-06-15 04:14:18 +00:00
f480943649
Support structural addition.
2001-06-07 02:12:43 +00:00
debe707097
check signals in the cprop functor.
2001-02-18 01:07:32 +00:00
59b69c6dd1
Constant propagation for compare ==.
2001-02-16 03:27:31 +00:00
f45ba008d8
Catch constants driving root module ports. (PR#130)
2001-02-10 04:50:54 +00:00
365b149ec1
Propagate initial value of constants into wires.
2000-12-30 03:11:15 +00:00
e33fb3ce51
Propagate constants through xnor gates. (PR#51)
2000-11-23 01:55:52 +00:00
e05b9a4769
Replace AND constand propagation.
2000-11-19 05:26:58 +00:00
2750977e4a
Thorough constant propagation for or and nor gates.
2000-11-18 05:13:27 +00:00
fc6978e4de
Handle constant propagation through XOR gates,
...
including reducing the gate to a constant,
a buffer or an inverter if possible.
2000-11-18 04:10:37 +00:00
a8da692540
Add support for the t-dll backend grabing flip-flops.
2000-11-11 00:03:36 +00:00
76e2c509d7
Put logic devices into scopes.
2000-10-07 19:45:42 +00:00
20d07a7366
Eliminate zero inputs to xor.
2000-10-06 21:26:34 +00:00
b5a36fef70
use bufif0 if z is in true case of mux.
2000-08-02 14:48:01 +00:00
cb7b1b6c94
Unlink z constants from nets.
2000-07-25 02:55:13 +00:00
2a08824ae9
Detect muxing Vz as a bufufN.
2000-07-15 05:13:43 +00:00
583868e74e
Redesign Links to include the Nexus class that
...
carries properties of the connected set of links.
2000-06-25 19:59:41 +00:00
e52ada617e
Get rid of useless next_link method.
2000-06-24 22:55:19 +00:00
ea96c3ef66
Support initialization of FF Q value.
2000-05-14 17:55:04 +00:00
b90cda1f3f
Carry strength values from Verilog source to the
...
pform and netlist for gates.
Change vvm constants to use the driver_t to drive
a constant value. This works better if there are
multiple drivers on a signal.
2000-05-07 04:37:55 +00:00
acfb5c177d
Over agressive signal elimination in constant probadation.
2000-04-28 21:00:28 +00:00
b734ecf02f
Macintosh compilers do not support ident.
2000-02-23 02:56:53 +00:00
c7193fa6fe
Do not delete constants that input to exressions.
2000-01-02 17:56:42 +00:00
b6d1bb1fa7
Propogate constant 0 in low bits of adders.
1999-12-30 04:19:12 +00:00
steve