Maintain an explicit "reachable" flag when decoding wasm. Push placeholder
frames on the control-flow stack instead of just maintaining a count of
the stack depth in unreachable code, so that we can whether If blocks
have Elses, and whether block exits are branched to, in all contexts.
Fixes#217.
Individual compilation passes call the corresponding timing::*()
function and hold on to their timing token while they run. This causes
nested per-pass timing information to be recorded in thread-local
storage.
The --time-passes command line option prints a pass timing report to
stdout.
The reserved register heaps are not implemented in the Cretonne
legalizer, so IR generated by the dummy environment would trip
assertions when compiled.
Use a heap with a vmctx base address instead, and also demonstrate how
vmctx arguments are added to all signatures to achieve this.
* wasm testsuite: ignore hidden files in test dir
and report a rejected file. it was picking up vim .swp files
* wasmtests: correct wat syntax in icall.wat
* Replace FunctionBuilder's Drop impl with a finalize function.
This has the advantage of not triggering assertion failures in the event
of abandoning a partially-built function. It has the disadvantage of
requiring users to call finalize() explicitly.
Ebb parameters are appended explicitly by whoever calls create_block,
so they don't need to also be inferred from branches. This makes the
frontend code more flexible for producers that want to create things
in a different order, and it eliminates more temporary allocations.
FunctionBuilder no longer maintains its own list of the function
parameter values; these can be obtained from the ebb parameter list
on the entry block.
switch_to_block doesn't need its jump_args argument, since jump
arguments are handled by the `jump` instruction and others, rather
than on the switch to a new ebb itself.
Rename the ArgumentType type to AbiParam since it describes the ABI
characteristics of a parameter or return value, not just the value type.
In Signature, rename members argument_types and return_types to "params"
and "returns". Again, they are not just types.
Fix a couple lingering references to "EBB arguments".
Add EBB parameter and EBB argument to the langref glossary to clarify
the distinction between formal EBB parameter values and arguments passed
to branches.
- Replace "ebb_arg" with "ebb_param" in function names that deal with
EBB parameters.
- Rename the ValueDef variants to Result and Param.
- A bunch of other small langref fixes.
No functional changes intended.
This is needed to allow implementations to have 'data-lifetime
references if they choose to. The DummyEnvironment is an example of an
implementation that doesn't choose to.
This renames WasmRuntime to ModuleEnvironment, and makes several changes
to allow for more flexible compilation.
ModuleEnvironment no longer derives from FuncEnvironment, and no longer
has the `begin_translation` and `next_translation` functions, so that
independent `FuncEnvironment` instances can operate within the same
module.
Also, this obviates the rest of TranslationResult, as it moves processing
of function bodies into the environment. The DummyEnvironment implementation
gives an example of decoding the function bodies as they are parsed, however
other implementation strategies are now possible.
Also, redo how functions are named in the DummyRuntime. Use the FunctionName
field to just encode the wasm function index rather than trying to shoehorn
a printable name into it. And to make up for that, teach the wasm printer
to print export names as comments next to the function definitions.
This also makes the fields of DummyRuntime public, in preparation for
the DummyRuntime to have a more general-purpose debugging role, as well
as possibly to allow it to serve as a base for other implementations.
