On 04/09/2012 05:36 AM, Stefan Plantikow wrote:
Hi,
Am Sonntag, 8. April 2012 um 23:16 schrieb Brian Anderson:
#[abi = "rust-intrinsic"]
native mod intrinsics {
fn bswap_i16(i: i16) -> i16;
}
The rust intrinsics would all just be hardcoded into the compiler to
translate to the appropriate llvm intrinsics.
As an llvm intrinsic:
#[abi = "llvm-intrinsic"]
native mod intrinsics {
#[link_name = "bswap.i16"]
fn bswap_i16(i16: i16) -> i16;
}
In this case rustc probably doesn't need to know anything specific about
the intrinsic - we just generate an intrinsic instruction with the given
name and types.
is there any advantage from choosing one form over the other (maybe in terms of
optimizability) beyond what already was mentioned?
I don't think so.
-Brian
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