This is only a debugging aid at this point, so compile out of the
release build. This reduces peak memory consumption by 4-5%. We still
keep the global counters to detect the tree have changed, to avoid
unnecessary dumps.
Multiple tricks to reduce the size of class FileLine from 72 to 40
bytes:
- Reduce file name index from 32 to 16 bits. This still allows 64K
unique input files, which is hopefully enough.
- Intern message/warning enable bitset and use a 16-bit index, again
allowing 64K unique sets which is hopefully enough.
- Put the m_waive flag into the sign bit of one of the line numbers.
- Use explicit reference counting to avoid overhead of shared_ptr.
Added assertions to ensure interned data fits within it's index space.
This saves ~5-10% peak memory consumption at no measurable run-time cost
on various designs.
- Rename `--dump-treei` option to `--dumpi-tree`, which itself is now a
special case of `--dumpi-<tag>` where tag can be a magic word, or a
filename
- Control dumping via static `dump*()` functions, analogous to `debug()`
- Make dumping independent of the value of `debug()` (so dumping always
works even without the debug flag)
- Add separate `--dumpi-graph` for dumping V3Graphs, which is again a
special case of `--dumpi-<tag>`
- Alias `--dump-<tag>` to `--dumpi-<tag> 3` as before
Use astgen to generate a more thorough version of AstNode::checkTree,
which checks that operands are or consistent structure and type, as
described in the @astgen op directives. Also change checkTree to always
run when --debug-check is given.
Fix discovered fallout.
Introduce the @astgen directives parsed by astgen, currently used for
the generation child node (operand) accessors. Please see the updated
internal documentation for details.
This approach reduced total time of V3Undriven stage from 34,2s to 2,5s
in design containing almost 400 000 unused variables.
Signed-off-by: Kamil Rakoczy <krakoczy@antmicro.com>
Generate type specific static overloads of Ast<Node>::addNext, which
return the correct sub-type of the 'this' they were invoked on.
Also remove AstNode::addNextNull, which is now only used in the parser,
implement in verilog.y directly as a template function.
- Move DType representations into V3AstNodeDType.h
- Move AstNodeMath and subclasses into V3AstNodeMath.h
- Move any other AstNode subtypes into V3AstNodeOther.h
- Fix up out-of-order definitions via inline methods and implementations
in V3Inlines.h and V3AstNodes.cpp
- Enforce declaration order of AstNode subtypes via astgen,
which will now fail when definitions are mis-ordered.
Rely less on strings and represent AstNode classes as a 'class Node',
with all associated properties kept together, rather than distributed
over multiple dictionaries or constructed at retrieval time.
No functional change intended.
