df6b24fd3a
ivl & vvp: Enabled 'string' as the return type in VPI functions.
2016-01-05 14:23:25 +01:00
63ad15ee2e
Rework user function calls to use specialized opcodes.
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Create The %callf/* opcodes to invoke user defined functions in a
more specialized way. This allows for some sanity checking on the
way, and also is a step towards keeping return values on stacks.
2015-12-27 20:29:10 -08:00
6c91588d33
Fix some errors found with cppcheck
2015-11-02 00:14:29 -08:00
a65c007fdb
Fix some cppcheck warnings
2015-10-02 09:43:54 -07:00
f01a312f17
Minor code generation improvements
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Use $flag_inv instead of %inv is several places.
2015-09-30 16:25:10 -07:00
fe7156289b
Remove some useless vvp opcodes.
2015-09-30 15:41:22 -07:00
571109481f
Use cmpi in more cases
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Before this patch, only literals on the right side of a < compare
(or left side of a > compare) would be blended into a %cmpi instruction.
This patch broadends the cases where the %cmpi can be used.
2015-09-30 12:35:19 -07:00
9f4b485c1c
Updated copyright dates displayed for main programs and targets.
2015-08-17 22:05:08 +01:00
05a52e55e9
Create a BUFZ to drive the 0.0 value onto an undriven real wire.
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This is needed to allow forced values to propagate correctly.
2015-06-26 00:45:00 +01:00
b242663cae
Support negedge flip-flops in synthesis and in vvp.
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Also extend the support for FF asynchronous set values to vvp and
fix the dff functor in vvp to correctly model asynchronous set/clr
behaviour.
2015-06-13 16:47:57 +01:00
2739f83702
Spelling fixes in C and C++ comments
2015-06-04 15:00:29 -07:00
33c651aa00
Spelling fixes in .txt files
2015-05-25 12:52:03 -07:00
cfbc90812b
Enable use of MinGW ANSI stdio routines.
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Defining __USE_MINGW_ANSI_STDIO=1 provides C99 compatible printf
and scanf routines, which avoids the need for workarounds for the
various failings of the Microsoft C runtime library.
2015-05-10 11:45:42 +01:00
e1ae5020c4
Another sorry message to catch non-constant RHS in procedural CA.
2015-04-25 11:25:33 +01:00
02ee3874e7
Space/code cleanup and warn that vvp does not support S/R D-FF
2015-04-20 15:41:44 -07:00
5dc1396eea
Spelling fixes
2015-04-13 11:35:12 -07:00
8326fe843b
Update format string to use correct format character
2015-04-08 19:36:33 -07:00
1cbc38100e
Update some cppcheck suppression files
2015-04-08 19:36:21 -07:00
50b45dac7b
Update queue push front/back code generation
2015-03-06 16:56:22 -08:00
feb710a186
Add support for any width 2-state darray objects
2015-02-27 11:43:25 -08:00
62abb199d7
Add support for 4-state dynamic arrays
2015-02-26 17:56:49 -08:00
756c9ceccf
ivl: Functions returning a dynamic array may be casted to vector.
2015-02-04 16:02:38 +01:00
8b3667f76e
ivl: Casting vectors to dynamic arrays.
2015-02-04 16:02:38 +01:00
a52242745a
ivl: Casting dynamic arrays to vectors.
2015-02-04 16:02:38 +01:00
01ba41afd8
Only skip zero repeat expressions in a concatenation.
2015-02-02 18:15:12 -08:00
84c592b068
Fix white space issue
2015-02-02 15:29:25 -08:00
bb93a585b6
Generate correct vvp code for zero replication cases
2015-02-02 15:27:57 -08:00
b3425d6cf3
Report that 4-state dynamic arrays are not currently supported in vvp
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Also fix some error code propagation issues.
2015-01-16 18:22:16 -08:00
40ae1051d4
Report the vvp only supports a dynamic array of size 8, 16, 32 or 64
2015-01-15 18:18:14 -08:00
1ffcd40336
Fix a clear word to be after it has been used
2015-01-14 19:48:24 -08:00
eeaf23041b
vvp: Support for dynamic arrays of logic type.
2015-01-12 11:08:31 +01:00
71c4ea36e8
Pass -v compiler option to vvp in the output file shebang line.
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Slightly modified version of the patch contributed by Stephan
Böttcheron iverilog-devel.
2014-12-16 21:22:19 +00:00
5df179cd5f
Implement feature request #47 .
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This causes vvp to evaluate all the input expressions for a user
function call before assigning any of them to the function input
variables. This stops the input variables being overwritten if
the same (non-automatic) function is used in one of the input
expressions.
2014-12-14 21:46:28 +00:00
b2d8d41e3f
Fix some cppcheck warnings in tgt-vvp
2014-12-10 16:30:55 -08:00
1efa220773
Fix non-blocking assignment to an array error state handling
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If either the index or part offset expressions generate an undefined
value then the assignment is skipped. This patch reworks the code that
handles the flags used to detect this. For some simple cases a global
flag is not needed, but for other cases one is needed since there are
two expressions that can generate an error and even when there is only
a variable expression this error state needs to be preserved if there
is a variable delay. An undefined delay value defaults to zero and is
not an error.
2014-12-09 17:29:18 -08:00
105521b547
Merge branch 'master' into vec4-stack
2014-12-06 08:24:46 -08:00
77ebfcacb9
Correctly pass if a darray element is signed or unsigned.
2014-12-05 18:23:02 -08:00
409f8c5823
Add the vec4 %subi instruction
2014-12-05 09:45:29 -08:00
85c7b07a9b
Implement %cmp/ne and %cmpi/ne
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These pull in the inversion of the output flags so that they more
efficiently implement != and !==, without %flag_inv instructions.
2014-12-03 11:06:11 -08:00
3bd307db85
Expression cast handles size if need be.
2014-12-02 16:54:32 -08:00
f287546f49
Fix a %vpi_call call syntax.
2014-12-02 15:28:22 -08:00
1645e682f4
Generate more efficient vec4-stack code for real le compare.
2014-12-02 14:53:01 -08:00
58fb80aec4
Implement and put to use the %muli instruction.
2014-12-02 12:46:17 -08:00
38f277d81b
Merge branch 'master' into vec4-stack
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Conflicts:
vvp/array.cc
vvp/vthread.cc
2014-12-02 11:21:58 -08:00
b12e00d875
ivl: String to vector casting.
2014-11-27 17:36:23 +01:00
663c79d4af
Add the %cmp/e instructions, and put them to use.
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When testing for == and ===, there is no need to also calculate <,
so it makes sense to have a special instruction for these cases.
2014-11-21 16:45:27 -08:00
b96f04ccce
Implement the %parti/X instructions
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This allows part select with constant base to be handled optimally.
Also update some more instructions to more optimally work with
the vec4 stack.
2014-11-20 18:43:24 -08:00
a9db765f98
Generate better code for condition expressions.
2014-11-20 14:47:44 -08:00
c71ab5869a
vvp code generator try to generate condition flags directly.
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When generating code for a condition expression, i.e. directly
before a %jmp/X statement, try to generate the result into the
flag bit without passing through the vec4 stack. For example, the
%cmpX/X instructions generate results into the flag bits, so it
makes no sense to push these bits into the vec4 stack then pop
them back into the flag bit. So try to handle this case.
2014-11-19 18:32:19 -08:00
04bdfbccee
Add %cmpi/s and %cmpi/u instructions for performance
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These bypass the vec4 stack in some common cases, saving instructions
and vec4 manipulations.
Also, minor improvement to the %flag/set/vec4 statement.
Kill a few warnings.
2014-11-19 16:38:43 -08:00
Maciej Suminski
Stephen Williams
Cary R
Martin Whitaker
Martin Whitaker
Larry Doolittle