Commit Graph

61 Commits

Author SHA1 Message Date
Stephen Williams 8f519531f3 Optimize load-add with load/add instruction
Where and expression is an immediate value added to a signal value,
it is possible to optimize them to a single instruction that combines
the load with an add at the same time.
2007-12-04 19:15:15 -08:00
Cary R 7e59186f1e Fixes for wide division/modulus.
Wide division/modulus (more bits than unsigned long) gave incorrect
results when both the divisor and dividend where the same. They also
did not produce an error message when dividing by zero.
2007-11-05 20:24:33 -08:00
Stephen Williams bef55d4426 Nets initialize with z value.
At time zero, nets (not variables) need to be initialized with z
instead of x.

Signed-off-by: Stephen Williams <steve@icarus.com>
2007-08-28 16:56:01 -07:00
steve ae82eccdc4 handle constant inf values. 2007-06-12 02:36:58 +00:00
steve 611d2c81b3 Spelling fixes from Larry 2007-03-22 16:08:14 +00:00
steve fc9a90c9e0 Add support for edge sensitive spec paths. 2007-03-02 06:13:22 +00:00
steve d958a4a5af Handle relink of continuous assignment. 2007-02-05 01:08:10 +00:00
steve 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
steve 316422d93b Handle vpiRealVal reads of signals, and real anyedge events. 2006-12-09 19:06:53 +00:00
steve 898b0e0365 Support release of a for/linked reg. 2006-08-04 04:37:37 +00:00
steve 80f30be9d0 Add support for system functions in continuous assignments. 2006-06-18 04:15:50 +00:00
steve 6f46d12e07 Add support for logic parameters. 2006-03-08 05:29:42 +00:00
steve 2b8fd28a95 Force instruction that can be indexed. 2005-11-26 17:16:05 +00:00
steve 35951510c5 Put vec8 and vec4 nets into seperate net classes. 2005-11-25 17:55:26 +00:00
steve bebcc05aab Handle very wide % and / operations using expanded vector2 support. 2005-11-10 13:27:16 +00:00
steve ee22550047 Lazy processing of vvp_fun_part functor. 2005-09-20 00:51:53 +00:00
steve be73be8c98 Spelling patches from Larry. 2005-09-19 21:45:35 +00:00
steve bc489a7761 Bring threads into the vvp_vector4_t structure. 2005-08-27 02:34:42 +00:00
steve a8d49921ee gcc4 compile errors. 2005-07-14 23:34:18 +00:00
steve 3ac79c294a Implement real valued signals and arith nodes. 2005-07-06 04:29:25 +00:00
steve de1dd2f2b3 Make bit masks of vector4_t 64bit aware. 2005-06-26 01:57:22 +00:00
steve 6c8e1f7834 inline the vvp_send_vec4_pv function. 2005-06-24 02:16:42 +00:00
steve b58705b829 Inline more simple stuff, and more vector4_t by const reference for performance. 2005-06-22 18:30:12 +00:00
steve 7091915b73 Reduce vvp_vector4 copies by using const references. 2005-06-22 00:04:48 +00:00
steve 5513974b78 Optimize vvp_scalar_t handling, and fun_buf Z handling. 2005-06-21 22:48:23 +00:00
steve ad78af2f91 Inline some commonly called vvp_vector4_t methods. 2005-06-20 01:28:14 +00:00
steve 1b30bac9f3 Optimize the LOAD_VEC implementation. 2005-06-19 18:42:00 +00:00
steve 466ab5c2c7 Resolv do not propogate inputs that do not change. 2005-06-15 00:47:15 +00:00
steve 21c7abf090 Accomodate fussy compilers. 2005-06-14 00:42:06 +00:00
steve 80cac983c6 More unified vec4 to hex string functions. 2005-06-13 00:54:04 +00:00
steve 668781788b Support resistive mos devices. 2005-06-12 15:13:37 +00:00
steve a59f3b1fa6 Implement nmos and pmos devices. 2005-06-12 00:44:49 +00:00
steve 42433f4df9 Add support for notif0/1 gates.
Make delay nodes support inertial delay.
 Add the %force/link instruction.
2005-06-02 16:02:11 +00:00
steve b6fd4f610b Add a sign-extension node. 2005-05-24 01:43:27 +00:00
steve ed78c5b677 Force part base out of bounds if index is invalid. 2005-05-09 00:36:58 +00:00
steve 7dd0d255a6 Add support for variable part select. 2005-05-08 23:40:14 +00:00
steve f6da64e2ec ostream insert for vvp_vector4_t objects. 2005-05-07 03:14:50 +00:00
steve e9bf021f6c vvp_fun_signal eliminates duplicate propagations. 2005-04-25 04:42:17 +00:00
steve a3f696cd06 Add vvp driver functor for logic outputs,
Add ostream output operators for debugging.
2005-04-13 06:34:20 +00:00
steve fe91ebe77c Default behavior for recv_vec8 methods. 2005-04-09 05:30:38 +00:00
steve 573e07225d Rework the vvp_delay_t class. 2005-04-03 05:45:51 +00:00
steve b7ef2fcb0a Reimplement combinational UDPs. 2005-04-01 06:02:45 +00:00
steve 53da6e9a33 Add support for LPM_UFUNC user defined functions. 2005-03-18 02:56:03 +00:00
steve 313502f360 Implement VPI access to signal strengths,
Fix resolution of ambiguous drive pairs,
 Fix spelling of scalar.
2005-03-12 04:27:42 +00:00
steve c5e7e2ec0a Signals may receive part vectors from %set/x0
instructions. Re-implement the %set/x0 to do
 just that. Remove the useless %set/x0/x instruction.
2005-02-14 01:50:23 +00:00
steve ff067bb959 tri0 and tri1 resolvers must replace HiZ with 0/1 after resolution. 2005-02-13 05:26:30 +00:00
steve 355ead0002 Add debug dumps for vectors, and fix vvp_scaler_t make from BIT4_X values. 2005-02-12 06:13:22 +00:00
steve ca1bbc79a3 Add .repeat functor and BIFIF functors. 2005-02-07 22:42:42 +00:00
steve b48abb2148 Add wide .arith/mult, and vvp_vector2_t vectors. 2005-02-04 05:13:02 +00:00
steve 018014368b Add support for reduction logic gates. 2005-02-03 04:55:13 +00:00