Dumping Dfg patterns can take a non-trivial amount of time, so do it
only with --dump-dfg-patterns, instead of with --stats.
Also further improve dumping format.
Remove parallel (using the FST library writer thread) and offloaded
(separate Verilator internal thread) tracing (only used by FST). These
are not compatible with #6992, and #5806 should yield better performance
in all cases.
Consequently mark '--trace-threads' and '--trace-fst-thread' options as
deprecated
Apple clang rejects `-o` when a precompiled header (.gch) is involved,
reporting "cannot specify -o when generating multiple output files".
Remove the unnecessary `-o $@` from the two PCH build rules; the
`%.o: %.cpp` pattern already implies the correct output name.
Add jemalloc as an alternative malloc implementation for the Verilator
binary. When both tcmalloc and jemalloc are available, jemalloc is
preferred due to its better performance on RTLMeter.
The new --enable-jemalloc flag (default=check) mirrors the existing
--enable-tcmalloc behavior: auto-detected at configure time, supports
both static and dynamic linking, and is disabled when --enable-dev-asan
is active.
Introduce new pass that converts impure expressions, or those with
function and method calls into simple assignment statements. Please see
the blurb at the top of the file why this is useful and how it works.
In particular currently it enables more Dfg optimization as functions
will be inlined without AstExprStmt.
Ideally we should enforce this lowering is applied to every procedural
statement (there are still a handful of exceptions). With that, long
term with this pass + #6820, there should be no need to ever use an
AstExprStmt past this new lowering pass, which should enable more easier
optimization down the line.
Also ideally this should be run earlier. Currently it's after V3Tristate
as that calls pinReconnectSimple so we don't have to touch Cell ports.
Currently disabled when code coverage is enabled due to #7119.
Michael Rogenmoser
Miguel
Wilson Snyder
24bit-xjkp
Igor Zaworski
Nikolai Kumar
hjsanjana
M2kar
Yogish Sekhar
Todd Strader
Geza Lore
em2machine
Rowan Goemans
Shogo Yamazaki
Nikolay Puzanov
Artur Bieniek
Jakub Michalski
Eunseo Song
Tracy Narine
Marco Bartoli
Yangyu Chen
Veripool API Bot
Julian Carrier
Rahul Behl
jalcim
AUDIY