Previously, cretonne-wasm used its own Local struct for identifying
local variables. However, now that cretonne-frontend provides a
Variable struct, just use that instead.
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.
