fe72d02cf6
Major rework of the ternary operator elaboration code.
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This patch reworks much of the ternary code to short circuit when
possible and supports real values better. It adds a blend operator
for real values that returns 0.0 when the values differ and the value
when they match. This deviates slightly from the standard which
specifies that the value for reals is always 0.0 when the conditional
is 'bx. There are also a couple bug fixes.
These fixes have not been ported to continuous assignments yet.
Ternary operators used at compile time and in procedural assignments
should be complete (short circuit and support real values).
2008-03-08 19:45:13 -08:00
285ff2859f
Add power operator synthesize().
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This patch adds synthesize() for the power operator.
2008-02-25 15:57:56 -08:00
fac1cc5a1c
Add user function synth and clean up expression code.
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This patch adds synthesize() for user functions. It also cleans up a
number of inconsistencies and missing checks in the expression code.
2008-02-24 20:00:18 -08:00
7975e14b5c
LineInfo uses perm_string for path.
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Rework the handling of file names to use a perm_string heap to hold
the file names, instead of the custom file name heap in the lexor.
Also rename the get_line to get_fileline to reflect its real duties.
This latter chage touched a lot of files.
2007-12-20 12:31:01 -05:00
fa2712a3ee
Fix for pr1851310.
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This patch fixes a bug in the compiler which prevented array words
from being correctly selected when used in the RHS of a continuous
assignment.
2007-12-15 15:56:54 -08:00
083b9b6ee6
Handle repeat concatenation in continuous assign
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When a repeat concatenation expression is translated to a netlist,
get the repeat expression right. This comes up when an elab_and_eval
elaboration contains a repeat concationation, and the expression is
ultimately turned into a netlist by expr_synth.
Signed-off-by: Stephen Williams <steve@icarus.com>
2007-09-01 17:36:57 -07:00
c7d97f4146
Properly evaluate scope path expressions.
2007-06-02 03:42:12 +00:00
8ed1a010f7
Allow bit/part select of vectors in continuous assignments.
2007-04-15 01:37:29 +00:00
2229825783
fix handling of unary reduction logic in certain nets.
2007-04-12 05:21:54 +00:00
a863b2390c
Remove useless assert
2007-04-04 02:31:57 +00:00
326329d497
Set some missing local flags.
2007-02-05 01:42:31 +00:00
4b829bf04f
Get argument widths right for shift results.
2007-01-20 02:10:45 +00:00
91d84e7dc7
Major rework of array handling. Memories are replaced with the
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more general concept of arrays. The NetMemory and NetEMemory
classes are removed from the ivl core program, and the IVL_LPM_RAM
lpm type is removed from the ivl_target API.
2007-01-16 05:44:14 +00:00
fc0695beb6
Handle 64bit delay constants.
2006-08-08 05:11:37 +00:00
49b65e86fe
Add support for power in constant expressions.
2006-07-31 03:50:17 +00:00
ed70db84ce
Handle real valued literals in net contexts.
2006-07-08 21:48:46 +00:00
a8b86ea3bb
More explicit datatype setup.
2006-05-01 20:47:58 +00:00
dc2898cc73
fix net type of multiply output.
2006-05-01 05:40:21 +00:00
0c9fb766b6
Get the data type of part select results right.
2006-04-30 05:17:48 +00:00
a4116efd57
Fix the return type of a synthesized divide.
2006-01-03 05:15:33 +00:00
7235706923
Make sure div, mod and mult nodes have line number info.
2005-09-15 23:04:09 +00:00
b69f59f2ec
Handle memory references is continuous assignments.
2005-08-31 05:07:31 +00:00
73f3589ea6
use NetPartSelect to shrink part from high bits.
2005-06-13 23:22:14 +00:00
9278dad244
Make synthesized padding vector-aware.
2005-06-13 22:26:03 +00:00
3bd09d1470
synthesis of Logic and shifts using vector gates.
2005-05-15 04:47:00 +00:00
d548c9a5f8
Handle synthesis of concatenation expressions.
2005-05-06 00:25:13 +00:00
af7e196518
synthesis of add and unary get vector widths right.
2005-04-25 01:30:31 +00:00
365cfedd55
Update DFF support to new data flow.
2005-04-24 23:44:01 +00:00
ab1ca54df2
Update support for LPM_MOD.
2005-03-12 06:43:35 +00:00
257e1f9516
Support shifts and divide.
2005-02-19 02:43:38 +00:00
d74177634c
Restructure NetMux devices to pass vectors.
...
Generate NetMux devices from ternary expressions,
Reduce NetMux devices to bufif when appropriate.
2005-02-12 06:25:40 +00:00
99ace10774
Simplified NetMult and IVL_LPM_MULT.
2005-01-28 05:39:33 +00:00
bf6a5d0f50
Implement LPM_COMPARE nodes as two-input vector functors.
2005-01-16 04:20:32 +00:00
65e9b6be12
Rework of internals to carry vectors through nexus instead
...
of single bits. Make the ivl, tgt-vvp and vvp initial changes
down this path.
2004-12-11 02:31:25 +00:00
3dbc07f34d
Implement signed divide and signed right shift in nets.
2004-06-30 02:16:26 +00:00
2d63705093
Connect rsif of multiply to DataB.
2004-06-16 16:21:34 +00:00
e8e0cd7cab
Support / and % in synthesized contexts.
2004-06-12 15:00:02 +00:00
ba309e60bb
Fix synthesis method for logical and/or
2004-06-01 01:04:57 +00:00
177b6ffb6a
Addtrbute keys are perm_strings.
2004-02-20 18:53:33 +00:00
27af95d402
Use perm_strings for named langiage items.
2004-02-18 17:11:54 +00:00
2f8a40b159
Fix evaluation of compare to constant expression.
2004-02-15 04:23:48 +00:00
8eccb7b9a1
Remove redundant scope tokens.
2003-11-10 19:39:20 +00:00
4eae8426a9
More flexible width handling for synthesized add.
2003-10-27 06:04:21 +00:00
1cb589fee0
Assure ternary arguments are wide enough.
2003-09-26 02:44:27 +00:00
b0230cf4d4
Support synthesis of constant downshifts.
2003-09-03 23:31:36 +00:00
7c1401a2ba
Spelling patch.
2003-08-28 04:11:17 +00:00
a95463ff81
Add support for IVL_LPM_MULT device.
2003-08-09 03:23:03 +00:00
bfe31e22bf
Start handling pad of expressions in code generators.
2003-07-26 03:34:42 +00:00
21ff80075a
Various warnings fixed.
2003-06-24 01:38:02 +00:00
58f5955687
Less picky about expression widths while synthesizing ternary.
2003-04-19 04:52:56 +00:00
58f2fe73c8
Detect constant shift distances in synthesis.
2003-04-08 05:07:15 +00:00
2c129dfbfa
Synthesize shift expressions.
2003-04-08 04:33:55 +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
46253ed873
Rework expression parsing and elaboration to
...
accommodate real/realtime values and expressions.
2003-01-26 21:15:58 +00:00
0ccb9139c9
Magnitude compare to 0.
2002-11-17 23:37:55 +00:00
52bf4e613f
conditional ident string using autoconfig.
2002-08-12 01:34:58 +00:00
33ee1da817
Smart synthesis of binary AND expressions.
2002-07-07 22:31:39 +00:00
301040a67a
Avoid emitting to vvp local net symbols.
2002-07-05 21:26:17 +00:00
bfad382fd1
Carry Verilog 2001 attributes with processes,
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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
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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
1a22f37d92
Synthesize reduction logic.
2001-12-30 17:06:52 +00:00
dddbeb957a
Comments about MUX synthesis.
2001-12-18 05:34:02 +00:00
e85347bf8b
Handle part selects in l-values of DFF devices.
2001-11-29 01:58:18 +00:00
874bab10e4
NetObj constructor finally requires a scope.
2001-10-28 01:14:53 +00:00
7a149a6943
Scope/module names are char* instead of string.
2001-10-20 05:21:51 +00:00
3fbbd4080a
synthesize the special case of compare with 0.
2001-08-31 22:59:48 +00:00
8356e6a51f
Properly synthesize part selects.
2001-08-05 02:49:07 +00:00
b825f8d2b2
Create a config.h.in file to hold all the config
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junk, and support gcc 3.0. (Stephan Boettcher)
2001-07-25 03:10:48 +00:00
30787fd49e
Put synthesized signals in proper scope.
2001-07-07 01:38:45 +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
2b0aaec8ab
FreeBSD port has a maintainer now.
2001-02-15 06:59:35 +00:00
145ac49233
NetMux needs a scope. (PR#115)
2001-01-18 03:16:35 +00:00
a5c69b50e5
Do not delete synthesized signals used in expressions.
2000-11-29 23:16:18 +00:00
ea921efced
synthesis for unary reduction ! and N operators.
2000-11-29 05:24:00 +00:00
291ab97422
Add support for || synthesis (PR#53)
2000-11-29 02:09:52 +00:00
76e2c509d7
Put logic devices into scopes.
2000-10-07 19:45:42 +00:00
8d8f1e2401
Move signal tables to the NetScope class.
2000-05-02 00:58:11 +00:00
2b40c7ce11
integer division in expressions properly get width.
2000-04-28 18:43:23 +00:00
2094a2f466
Catch some simple identity compareoptimizations.
2000-04-20 00:28:03 +00:00
726f7b8b11
Synthesis of comparator in expressions.
...
Connect the NetEvent and related classes
together better.
2000-04-16 23:32:18 +00:00
b734ecf02f
Macintosh compilers do not support ident.
2000-02-23 02:56:53 +00:00
e6820ed169
Handle synthesis of concatenation.
2000-01-01 06:18:00 +00:00
4de8ba489d
Rewrite the cprop functor to use the functor_t interface.
1999-12-17 06:18:15 +00:00
65ae92859c
NetConst can now hold wide constants.
1999-12-17 03:38:46 +00:00
e96e8c62be
NetESignal object no longer need to be NetNode
...
objects. Let them keep a pointer to NetNet objects.
1999-11-28 23:42:02 +00:00
4cfa3e4047
Support the creation of scopes.
1999-11-27 19:07:57 +00:00
fbf0bf1fb7
Whoops, created a signal with a duplicate name.
1999-11-19 03:00:59 +00:00
2cce0ce238
Patch to synthesize LPM_ADD_SUB from expressions,
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Thanks to Larry Doolittle. Also handle constants
in expressions.
Synthesize adders in XNF, based on a patch from
Larry. Accept synthesis of constants from Larry
as is.
1999-11-05 04:40:40 +00:00
cb5fc54b5e
Patch to synthesize unary ~ and the ternary operator.
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Thanks to Larry Doolittle <LRDoolittle@lbl.gov>.
Add the LPM_MUX device, and integrate it with the
ternary synthesis from Larry. Replace the lpm_mux
generator in t-xnf.cc to use XNF EQU devices to
put muxs into function units.
Rewrite elaborate_net for the PETernary class to
also use the LPM_MUX device.
1999-11-04 03:53:26 +00:00
b66e7b1713
Add the synthesize method to NetExpr to handle
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synthesis of expressions, and use that method
to improve r-value handling of LPM_FF synthesis.
Modify the XNF target to handle LPM_FF objects.
1999-11-02 04:55:34 +00:00
Cary R
Stephen Williams
Martin Whitaker
steve