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cranelift-simplejit: add a translation mechanism for LibCalls (#747)

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This commit is contained in:
antoyo
2019-04-29 10:58:39 -04:00
committed by Benjamin Bouvier
parent d8d573208b
commit 79d6978e29
6 changed files with 135 additions and 57 deletions
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21
cranelift/faerie/src/backend.rs
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@@ -46,7 +46,7 @@ impl FaerieBuilder {
/// The `libcall_names` function provides a way to translate `cranelift_codegen`'s `ir::LibCall`
/// enum to symbols. LibCalls are inserted in the IR as part of the legalization for certain
/// floating point instructions, and for stack probes. If you don't know what to use for this
/// argument, use `FaerieBuilder::default_libcall_names()`.
/// argument, use `cranelift_module::default_libcall_names()`.
pub fn new(
isa: Box<TargetIsa>,
name: String,
@@ -65,25 +65,6 @@ impl FaerieBuilder {
libcall_names,
})
}
/// Default names for `ir::LibCall`s. A function by this name is imported into the object as
/// part of the translation of a `ir::ExternalName::LibCall` variant.
pub fn default_libcall_names() -> Box<Fn(ir::LibCall) -> String> {
Box::new(move |libcall| match libcall {
ir::LibCall::Probestack => "__cranelift_probestack".to_owned(),
ir::LibCall::CeilF32 => "ceilf".to_owned(),
ir::LibCall::CeilF64 => "ceil".to_owned(),
ir::LibCall::FloorF32 => "floorf".to_owned(),
ir::LibCall::FloorF64 => "floor".to_owned(),
ir::LibCall::TruncF32 => "truncf".to_owned(),
ir::LibCall::TruncF64 => "trunc".to_owned(),
ir::LibCall::NearestF32 => "nearbyintf".to_owned(),
ir::LibCall::NearestF64 => "nearbyint".to_owned(),
ir::LibCall::Memcpy => "memcpy".to_owned(),
ir::LibCall::Memset => "memset".to_owned(),
ir::LibCall::Memmove => "memmove".to_owned(),
})
}
}
/// A `FaerieBackend` implements `Backend` and emits ".o" files using the `faerie` library.