This patch updates or removes all references to the Cranelift repository. It affects links in README documents, issues that were transferred to the Wasmtime repository, CI badges, and a small bunch of sundry items.
The EVEX encoding format (e.g. in AVX-512) allows addressing 32 registers instead of 16. The FPR register class currently defines 16 registers, `%xmm0`-`%xmm15`; that class is kept as-is with this change. A larger class, FPR32, is added as a super-class of FPR using a larger bank of registers, `%xmm0`-`%xmm31`.
With this change, register banks can now be re-ordered and other components (e.g. unwinding, regalloc) will no longer break. The previous behavior assumed that GPR registers always started at `RegUnit` 0.
Update the documentation for the merger, and also for various changes in
Cranelift. Remove some old obsolete documentation, and convert the remaining
Sphinx files to Markdown. Some of the remaining content is still out of
date, but this is a step forward.
This is a rebase of [1]. In the long term, we'll want to simplify these
analysis passes. For now, this is simple and will reduce the number of
instructions processed in certain cases.
[1] https://github.com/bytecodealliance/cranelift/pull/866
* Manually rename BasicBlock to BlockPredecessor
BasicBlock is a pair of (Ebb, Inst) that is used to represent the
basic block subcomponent of an Ebb that is a predecessor to an Ebb.
Eventually we will be able to remove this struct, but for now it
makes sense to give it a non-conflicting name so that we can start
to transition Ebb to represent a basic block.
I have not updated any comments that refer to BasicBlock, as
eventually we will remove BlockPredecessor and replace with Block,
which is a basic block, so the comments will become correct.
* Manually rename SSABuilder block types to avoid conflict
SSABuilder has its own Block and BlockData types. These along with
associated identifier will cause conflicts in a later commit, so
they are renamed to be more verbose here.
* Automatically rename 'Ebb' to 'Block' in *.rs
* Automatically rename 'EBB' to 'block' in *.rs
* Automatically rename 'ebb' to 'block' in *.rs
* Automatically rename 'extended basic block' to 'basic block' in *.rs
* Automatically rename 'an basic block' to 'a basic block' in *.rs
* Manually update comment for `Block`
`Block`'s wikipedia article required an update.
* Automatically rename 'an `Block`' to 'a `Block`' in *.rs
* Automatically rename 'extended_basic_block' to 'basic_block' in *.rs
* Automatically rename 'ebb' to 'block' in *.clif
* Manually rename clif constant that contains 'ebb' as substring to avoid conflict
* Automatically rename filecheck uses of 'EBB' to 'BB'
'regex: EBB' -> 'regex: BB'
'$EBB' -> '$BB'
* Automatically rename 'EBB' 'Ebb' to 'block' in *.clif
* Automatically rename 'an block' to 'a block' in *.clif
* Fix broken testcase when function name length increases
Test function names are limited to 16 characters. This causes
the new longer name to be truncated and fail a filecheck test. An
outdated comment was also fixed.
* All: Drop 'basic-blocks' feature
This makes it so that 'basic-blocks' cannot be disabled and we can
start assuming it everywhere.
* Tests: Replace non-bb filetests with bb version
* Tests: Adapt solver-fixedconflict filetests to use basic blocks
This commit aligns the representation of stackmaps to be the same
as Spidermonkey's by:
* Reversing the order of the bitmap from low addresses to high addresses
* Including incoming stack arguments
* Excluding outgoing stack arguments
Additionally, some accessor functions were added to allow Spidermonkey
to access the internals of the bitmap.
Accessing Wasm reference globals that are reference types will
want to use the plain load/store instructions. This commit adds
encodings for these instructions to match loading a i32/i64.
Producers of IR are required to insert the appropriate barriers
around the loads/stores.
Spidermonkey returns a sentinel ref value of '-1' from some VM functions
to indicate failure. This commit adds an instruction analagous to ref.is_null
that checks for this value.
Previously, the assertion checked for `lane > 0` when it should have been `lane >= 0`; since lane is unsigned, this half of the assertion can be entirely removed.
* Use `is_wasm_parameter` in translating wasm calls
Added in #1329 it's now possible for multiple parameters to be non-wasm
parameters, so the previous `param_types` method is no longer suitable
for acquiring all wasm-related parameters, rather then `FuncEnvironment`
must be consulted. This removes usage of `param_types()` as a method
from the wasm translation and instead adds a custom method inline for
filtering the parameters based on `is_wasm_parameter`.
* Apply feedback
* Run rustfmt
* Don't require `mut`
* Run rustfmt
* Correctly count the number of wasm parameters.
Following up on #1329, this further replaces `num_normal_params` with a function
which calls `is_wasm_parameter` to correctly count the number of wasm
parameters a function has.
* Move is_wasm_parameter's implementation into the trait.
