a67d573ae6
Eval_tree debug is controled by debug_eval_tree flag.
2008-04-08 20:42:08 -07:00
ea74eb771e
Fix a couple problems with signed multiply
...
Problems with signed expressions that are set to parameters and
that include multipliciation exposed a few bugs in the calculation
of signed multiply. Fix this and add some improved diagnostics.
2008-03-25 21:35:08 -07:00
fe72d02cf6
Major rework of the ternary operator elaboration code.
...
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
fac1cc5a1c
Add user function synth and clean up expression code.
...
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
3716e972ec
Add support for unary +/- in real parameter evaluation.
...
This patch adds support for unary + and - of real value constants
to the eval_tree() functionality.
2008-02-20 17:24:44 -08:00
4cf8920e48
Fix trimming of unsigned verinum values.
...
Incorrect trimming of unsigned verinum values was causing the
compilers unsigned constant verinum pow function to give
incorrect results. This patch restores the pow compile time
optimization and fixes the trimming to always leave a single
zero in the MSB.
2008-02-05 15:40:21 -08:00
e82293c981
Add unsigned bit based power support to normal expressions.
...
This patch adds bit based power support to normal expressions.
It also pushes the constant unsigned bit based calculation to
the runtime until the bit based method can be copied to the
compiler. Continuous assignments also need to use this type
of calculation.
2008-02-05 15:33:51 -08:00
d9ac146b8f
Spelling fixes
...
only comments and documentation
some punctuation and capitalization for good measure
Changelogs are purposefully untouched
2008-01-29 20:24:24 -08:00
76164d7711
Rework compile-time evaluation of LT and GT
...
There was much redundant code in the compile-tile handling of the
less-then and greater-then of constant expressions, and much of it
was buggy. Unify much of the code and squeeze out the bugs so that
compile-time evaluations come out correctly.
2008-01-23 20:43:13 -08:00
89bf16b21e
Signed-ness of parameters
...
Propagate the signedness of named parameters when they are evaluated.
2008-01-22 20:16:43 -08:00
5b17f2039a
Fix bug in eval of <= compare
...
The compiler attempts to precalculate the results of <= comparisons.
Fix a few corner cases where the arguments are signed. Also fix the
important test of constant against non-constant where we try to test
if the non-constant value can possibly make the test fail.
2008-01-21 22:05:50 -08:00
8ea3b6b0b8
header includes for gcc-4.3 compatibility
...
minimal changes required to build without error
tested with gcc-4.3 (Debian 4.3-20071130-1) 4.3.0 20071130 (experimental)
2008-01-04 16:14:44 -08:00
7975e14b5c
LineInfo uses perm_string for path.
...
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
4c8a7b221c
Proper padding of constant bitwise operands
...
When evaluating bitwise binary expressions at compile time, get the
signed/unsigned padding correct. Pay special attention to the case
of $signed/$unsigned changing the signedness of the operand.
2007-12-17 21:00:18 -08:00
bab9c7adba
Proper compile time processing of arithmetic right shift
...
Handle arithmetic right shift during compile time. This comes
up with both the operands are constant expressions. the compiler
is able to evaluate this down to a constant to replace the
expression.
Signed-off-by: Stephen Williams <steve@icarus.com>
2007-11-08 21:52:38 -08:00
3b94c122b7
Constant concat operands are self determined
...
distinguish between self-determined and value-preserving when
evaluating constants that are arguments to concatenations.
Signed-off-by: Stephen Williams <steve@icarus.com>
2007-08-09 22:08:54 -07:00
c7d97f4146
Properly evaluate scope path expressions.
2007-06-02 03:42:12 +00:00
1f9a246c6d
Fix warning (ldolittle)
2007-05-31 18:36:06 +00:00
33e5f22cf1
Handle evaluate of addition of real valued constants.
2007-04-07 04:46:18 +00:00
d9efe3312e
Limit the calculated widths of constants.
2007-03-08 05:30:02 +00:00
91d84e7dc7
Major rework of array handling. Memories are replaced with the
...
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
ed5d3188b3
Fix padding of constant eval of NetESelect.
2006-11-04 06:16:27 +00:00
2302693201
Expression widths with unsized literals are pseudo-infinite width.
2006-10-30 05:44:49 +00:00
92cb1d4e2d
Use elab_and_eval for bit select expressions.
2006-09-19 23:00:15 +00:00
49b65e86fe
Add support for power in constant expressions.
2006-07-31 03:50:17 +00:00
5b3ba8c306
Properly handle signedness in compare.
2006-03-18 22:52:27 +00:00
908955c72c
Handle bit select of parameter with ranges.
2005-11-27 05:56:20 +00:00
c02b3b8ac6
Reorganize signal part select handling, and add support for
...
indexed part selects.
Expand expression constant propagation to eliminate extra
sums in certain cases.
2005-11-10 13:28:11 +00:00
9fd16575d9
Support bool expressions and compares handle them optimally.
2005-09-14 02:53:13 +00:00
b9799cf6ec
Remove NetVariable and ivl_variable_t structures.
2005-07-11 16:56:50 +00:00
a79fee39e9
Watch out for signed constants in magnitude compare.
2005-06-17 05:05:53 +00:00
e4ae832153
Clean up spurious trailing white space.
2004-10-04 01:10:51 +00:00
d1dac0017d
Fix the evaluation of constant ternary expressions.
2004-09-10 23:51:42 +00:00
1295058e5d
parameter keys are per_strings.
2004-02-20 06:22:56 +00:00
7fd669fcc0
NetEUReduce has its own dup_expr method.
2003-10-31 02:47:11 +00:00
1c99c629b1
Support constant evaluation of binary ^ operator.
2003-10-26 04:54:56 +00:00
f495c75faf
Evaluate real parameter expressions that contain real parameters.
2003-09-04 01:52:50 +00:00
1a3a3fbcfa
Fix || with true case on the right.
2003-08-01 02:12:30 +00:00
21ff80075a
Various warnings fixed.
2003-06-24 01:38:02 +00:00
8352c91b0a
Evaluate <= with real operands.
2003-06-05 04:28:24 +00:00
d3daa997b5
internal error for <= expression errors.
2003-06-04 01:26:17 +00:00
5903f0744c
Support parameters in real expressions and
...
as real expressions, and fix multiply and
divide with real results.
2003-05-30 02:55:32 +00:00
772a8b7dac
Handle real constants evaluation > and >=.
2003-04-15 05:06:56 +00:00
bab0924d86
Make some effort to preserve bits while
...
operating on constant values.
2003-04-14 03:40:21 +00:00
7a752bd111
More resilient WRT right expression width of GT.
2003-03-15 18:07:58 +00:00
1222153cdf
Keep parameter constants for the ivl_target API.
2003-03-10 23:40:53 +00:00
f8d1e15a27
NetEBDiv handles real value constant expressions.
2003-02-07 02:47:57 +00:00
e941e7e805
Spelling fixes.
2003-01-30 16:23:07 +00:00
8f0c02c0fa
Spelling fixes.
2003-01-27 05:09:17 +00:00
9f80ed32b6
Support bit select in constant expressions.
2002-12-05 02:14:33 +00:00
aa8869a3c7
Postpone parameter width check to evaluation.
2002-11-09 01:40:19 +00:00
43501809b1
Redo the parameter vector support to allow
...
parameter names in range expressions.
2002-10-19 22:59:49 +00:00
52bf4e613f
conditional ident string using autoconfig.
2002-08-12 01:34:58 +00:00
6bd8ab46d5
Eval ^ and &0 expressions.
2002-05-25 16:43:47 +00:00
a3eb6868ea
Allow parameters in concatenation of widths are defined.
2002-05-06 02:30:27 +00:00
8667b9a35d
Put off evaluation of concatenation repeat expresions
...
until after parameters are defined. This allows parms
to be used in repeat expresions.
Add the builtin $signed system function.
2002-05-05 21:11:49 +00:00
84020b16e3
Preserve stringiness string part select and concatenation.
2002-04-27 05:03:46 +00:00
10dc978778
Fixup eval of signed constants.
2002-04-27 03:17:15 +00:00
714ca3542d
Fix compile time eval of signed <= signed.
2002-04-24 02:47:02 +00:00
6d4c6b56f6
Fix constant evaluation of unary
2002-04-14 19:28:47 +00:00
9756cb6382
Propagate sign in unary minus.
2002-02-01 05:09:14 +00:00
349be0f169
Precalculate constant results of memory index expressions.
2002-01-22 01:40:04 +00:00
b397b10104
Evaluate constant unary minus.
2001-12-30 00:39:25 +00:00
ab6c8cb4b8
Parser and pform use hierarchical names as hname_t
...
objects instead of encoded strings.
2001-12-03 04:47:14 +00:00
cfed3933fa
Port close cropping behavior from mcrgb
...
Move window array reset to libmc.
2001-11-19 01:54:14 +00:00
1921e19635
fix constant overrun in | operands.
2001-10-22 15:31:21 +00:00
5c4b87675f
Evaluate constant == when operands differ in width.
2001-10-20 00:11:24 +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
85d53ebbf4
Handle 0 counts in repeat concatenation.
2001-07-16 20:41:41 +00:00
f5d0211864
In the context of range declarations, use elab_and_eval instead
...
of the less robust eval_const methods.
2001-02-10 20:29:39 +00:00
7ef3b44ab1
support evaluation of constant < in expressions.
2001-02-09 05:44:23 +00:00
94a1d59817
Support constant evaluation of / and % (PR#124)
2001-02-07 02:46:31 +00:00
219df169a3
Generalize the evaluation of floating point delays, and
...
get it working with delay assignment statements.
Allow parameters to be referenced by hierarchical name.
2001-01-14 23:04:55 +00:00
8bfae1e641
Evaluate constant === and !== expressions.
2001-01-04 16:49:50 +00:00
d5ec89813d
Evaluate constant logical && and ||.
2001-01-04 04:28:42 +00:00
120a211e68
Support a bunch of unary operators in parameter expressions.
2001-01-02 04:21:13 +00:00
b6a18098c7
Evaluate constant &, | and unary ~.
2001-01-02 03:23:40 +00:00
112936d661
Fix shift and ternary operators in parameter expressions (PR#86)
2001-01-01 21:49:33 +00:00
fe209a6996
Handle non-constant l-values.
2000-12-16 20:00:17 +00:00
f4671a3082
Evaluate <= and ?: in parameter expressions (PR#81)
2000-12-16 19:03:30 +00:00
21e0e8a8a1
Cnstant evaluation of NE.
2000-09-29 04:42:56 +00:00
fff759de20
multiply in parameter expressions.
2000-09-27 18:28:37 +00:00
18eb34921f
Add support for non-constant delays in delay statements,
...
Support evaluating ! in constant expressions, and
move some code from netlist.cc to net_proc.cc.
2000-07-07 04:53:53 +00:00
2b40c7ce11
integer division in expressions properly get width.
2000-04-28 18:43:23 +00:00
e7efc2709a
Redesign the implementation of scopes and parameters.
...
I now generate the scopes and notice the parameters
in a separate pass over the pform. Once the scopes
are generated, I can process overrides and evalutate
paremeters before elaboration begins.
2000-03-08 04:36:53 +00:00
b734ecf02f
Macintosh compilers do not support ident.
2000-02-23 02:56:53 +00:00
aa8908c52f
Multiplication all the way to simulation.
2000-01-13 03:35:35 +00:00
2c774bfe75
do the <= in bits, not numbers.
1999-10-22 23:57:53 +00:00
19b8615363
Support evaluating + operator at compile time.
1999-10-10 23:29:37 +00:00
1a21d2fe9d
Support shift operators.
1999-09-23 03:56:57 +00:00
1c41f8ebd2
Move set_width methods into a single file,
...
Add the NetEBLogic class for logic expressions,
Fix error setting with of && in if statements.
1999-09-23 00:21:54 +00:00
349f9ae302
Support parameters that reference other paramters.
1999-09-21 00:13:40 +00:00
3a5e55b229
Elaborate parameters in phases.
1999-09-20 02:21:10 +00:00
Stephen Williams
Cary R
Larry Doolittle
steve