devcontainers are a convenient way to provide users a reproducible
build environment. It is currently supported by Visual Studio Code,
Visual Studio and IntelliJ.
When the user opens the verilator repo in VSCode with the standard
devcontainer extension installed, VSCode will ask the user if they
want to reopen in the devcontainer, then build the Docker image as per
our definition and then restart VSCode 'remotely' attached to the
Docker container.
More information:
https://code.visualstudio.com/docs/devcontainers/containers
Also:
- zlibc is missing on Debian-based systems now
- Add non-root user to Dockerfile and make default
- Enable creating constant pool entries for RHS of simple
var = const assignments
- Never extract ArraySel (it's just pointer arithmetic)
- Remove unnecessary AstTraceInc precond child tree
- Always fully recurse expressions (fix transplanted from #4617)
- General cleanup
Overall the patch is performance neutral to slightly positive, but saves
~10% peak Verialtor memory usage due to not creating temporaries (which
are later expanded) for any ArraySels.
Adds a new field to `AstSenItem` that stores the `iff` condition which is then handled by `SenExprBuilder`.
Signed-off-by: Krzysztof Bieganski <kbieganski@antmicro.com>
This patch addresses two issues with NBAs in non-inlined functions/tasks:
- If the NBA writes to a local automatic var, the var could cease to exist before the NBA executes. This is normally addressed by fork dynscopes (#4356), but NBA-to-fork transformation happens way after `V3Fork` (in `V3Timing`). To solve this, we put NBAs that write to locals under forks in `V3Fork` already. This way, such locals will be put in dynscopes, and will still exist after the task containing the NBA exits.
- The above change means that any writes in forks other than `fork..join` should be handled by `V3Fork`. Thus, in `V3SchedTiming`, we only have to worry about read references, so we can simply copy all remaining locals. Because we copy, lifetimes are not an issue. This fixes a bug that allowed assignment intravals to be overwritten if they go out of scope in the containing function.
