cranelift-native crate: add API variant allowing backend selection.
@@ -34,8 +34,24 @@ use raw_cpuid::CpuId;
/// machine, or `Err(())` if the host machine is not supported
/// in the current configuration.
pub fn builder() -> Result<isa::Builder, &'static str> {
- let mut isa_builder = isa::lookup(Triple::host()).map_err(|err| match err {
- isa::LookupError::SupportDisabled => "support for architecture disabled at compile time",
+ builder_with_backend_variant(isa::BackendVariant::Any)
+}
+
+/// Return an `isa` builder configured for the current host
+/// machine, or `Err(())` if the host machine is not supported
+/// in the current configuration.
+///
+/// Selects the given backend variant specifically; this is
+/// useful when more than oen backend exists for a given target
+/// (e.g., on x86-64).
+pub fn builder_with_backend_variant(
+ variant: isa::BackendVariant,
+) -> Result<isa::Builder, &'static str> {
+ let mut isa_builder =
+ isa::lookup_variant(Triple::host(), variant).map_err(|err| match err {
+ isa::LookupError::SupportDisabled => {
+ "support for architecture disabled at compile time"
+ }
isa::LookupError::Unsupported => "unsupported architecture",
})?;
