795b0aaf9a
This primary motivation of this large commit (apologies for its size!) is to
introduce `Gpr` and `Xmm` newtypes over `Reg`. This should help catch
difficult-to-diagnose register class mixup bugs in x64 lowerings.
But having a newtype for `Gpr` and `Xmm` themselves isn't enough to catch all of
our operand-with-wrong-register-class bugs, because about 50% of operands on x64
aren't just a register, but a register or memory address or even an
immediate! So we have `{Gpr,Xmm}Mem[Imm]` newtypes as well.
Unfortunately, `GprMem` et al can't be `enum`s and are therefore a little bit
noisier to work with from ISLE. They need to maintain the invariant that their
registers really are of the claimed register class, so they need to encapsulate
the inner data. If they exposed the underlying `enum` variants, then anyone
could just change register classes or construct a `GprMem` that holds an XMM
register, defeating the whole point of these newtypes. So when working with
these newtypes from ISLE, we rely on external constructors like `(gpr_to_gpr_mem
my_gpr)` instead of `(GprMem.Gpr my_gpr)`.
A bit of extra lines of code are included to add support for register mapping
for all of these newtypes as well. Ultimately this is all a bit wordier than I'd
hoped it would be when I first started authoring this commit, but I think it is
all worth it nonetheless!
In the process of adding these newtypes, I didn't want to have to update both
the ISLE `extern` type definition of `MInst` and the Rust definition, so I move
the definition fully into ISLE, similar as aarch64.
Finally, this process isn't complete. I've introduced the newtypes here, and
I've made most XMM-using instructions switch from `Reg` to `Xmm`, as well as
register class-converting instructions, but I haven't moved all of the GPR-using
instructions over to the newtypes yet. I figured this commit was big enough as
it was, and I can continue the adoption of these newtypes in follow up commits.
Part of #3685.
105 lines
3.5 KiB
TOML
105 lines
3.5 KiB
TOML
[package]
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authors = ["The Cranelift Project Developers"]
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name = "cranelift-codegen"
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version = "0.80.0"
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description = "Low-level code generator library"
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license = "Apache-2.0 WITH LLVM-exception"
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documentation = "https://docs.rs/cranelift-codegen"
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repository = "https://github.com/bytecodealliance/wasmtime"
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categories = ["no-std"]
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readme = "README.md"
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keywords = ["compile", "compiler", "jit"]
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build = "build.rs"
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edition = "2018"
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[dependencies]
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cranelift-codegen-shared = { path = "./shared", version = "0.80.0" }
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cranelift-entity = { path = "../entity", version = "0.80.0" }
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cranelift-bforest = { path = "../bforest", version = "0.80.0" }
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hashbrown = { version = "0.9.1", optional = true }
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target-lexicon = "0.12"
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log = { version = "0.4.6", default-features = false }
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serde = { version = "1.0.94", features = ["derive"], optional = true }
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bincode = { version = "1.2.1", optional = true }
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gimli = { version = "0.26.0", default-features = false, features = ["write"], optional = true }
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smallvec = { version = "1.6.1" }
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regalloc = "0.0.34"
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souper-ir = { version = "2.1.0", optional = true }
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# It is a goal of the cranelift-codegen crate to have minimal external dependencies.
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# Please don't add any unless they are essential to the task of creating binary
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# machine code. Integration tests that need external dependencies can be
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# accomodated in `tests`.
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[dev-dependencies]
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criterion = "0.3"
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[build-dependencies]
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cranelift-codegen-meta = { path = "meta", version = "0.80.0" }
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cranelift-isle = { path = "../isle/isle", version = "=0.80.0", optional = true }
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miette = { version = "3", features = ["fancy"], optional = true }
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[features]
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default = ["std", "unwind"]
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# The "std" feature enables use of libstd. The "core" feature enables use
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# of some minimal std-like replacement libraries. At least one of these two
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# features need to be enabled.
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std = []
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# The "core" features enables use of "hashbrown" since core doesn't have
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# a HashMap implementation, and a workaround for Cargo #4866.
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core = ["hashbrown"]
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# This enables some additional functions useful for writing tests, but which
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# can significantly increase the size of the library.
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testing_hooks = []
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# This enables unwind info generation functionality.
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unwind = ["gimli"]
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# ISA targets for which we should build.
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# If no ISA targets are explicitly enabled, the ISA target for the host machine is enabled.
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x86 = []
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arm64 = []
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s390x = []
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arm32 = [] # Work-in-progress codegen backend for ARM.
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# Stub feature that does nothing, for Cargo-features compatibility: the new
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# backend is the default now.
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experimental_x64 = []
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# Option to enable all architectures.
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all-arch = [
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"x86",
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"arm64",
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"s390x"
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]
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# For dependent crates that want to serialize some parts of cranelift
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enable-serde = [
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"serde",
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"regalloc/enable-serde",
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"cranelift-entity/enable-serde",
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]
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# Allow snapshotting regalloc test cases. Useful only to report bad register
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# allocation failures, or for regalloc.rs developers.
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regalloc-snapshot = ["bincode", "regalloc/enable-serde"]
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# Enable support for the Souper harvester.
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souper-harvest = ["souper-ir", "souper-ir/stringify"]
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# Recompile ISLE DSL source files into their generated Rust code.
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rebuild-isle = ["cranelift-isle", "miette", "cranelift-codegen-meta/rebuild-isle"]
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# A hack to skip the ISLE-rebuild logic when testing for determinism
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# with the "Meta deterministic check" CI job.
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completely-skip-isle-for-ci-deterministic-check = []
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[badges]
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maintenance = { status = "experimental" }
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[[bench]]
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name = "x64-evex-encoding"
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harness = false
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