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Rollup merge of #88855 - calebzulawski:feature/simd_shuffle, r=nagisa

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Allow simd_shuffle to accept vectors of any length

cc ``@rust-lang/project-portable-simd`` ``@workingjubilee``
This commit is contained in:
Yuki Okushi 2021-09-19 17:31:29 +09:00 • committed by GitHub
commit e675073e73
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14 changed files with 171 additions and 35 deletions
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7
compiler/rustc_typeck/src/check/intrinsic.rs
View file

@ -2,7 +2,7 @@
//! intrinsics that the compiler exposes.
use crate::errors::{
SimdShuffleMissingLength, UnrecognizedAtomicOperation, UnrecognizedIntrinsicFunction,
UnrecognizedAtomicOperation, UnrecognizedIntrinsicFunction,
WrongNumberOfGenericArgumentsToIntrinsic,
};
use crate::require_same_types;
@ -468,6 +468,7 @@ pub fn check_platform_intrinsic_type(tcx: TyCtxt<'_>, it: &hir::ForeignItem<'_>)
| sym::simd_reduce_max
| sym::simd_reduce_min_nanless
| sym::simd_reduce_max_nanless => (2, vec![param(0)], param(1)),
sym::simd_shuffle => (3, vec![param(0), param(0), param(1)], param(2)),
name if name.as_str().starts_with("simd_shuffle") => {
match name.as_str()["simd_shuffle".len()..].parse() {
Ok(n) => {
@ -475,7 +476,9 @@ pub fn check_platform_intrinsic_type(tcx: TyCtxt<'_>, it: &hir::ForeignItem<'_>)
(2, params, param(1))
}
Err(_) => {
tcx.sess.emit_err(SimdShuffleMissingLength { span: it.span, name });
let msg =
format!("unrecognized platform-specific intrinsic function: `{}`", name);
tcx.sess.struct_span_err(it.span, &msg).emit();
return;
}
}

8
compiler/rustc_typeck/src/errors.rs
View file

@ -121,14 +121,6 @@ pub struct AssocTypeBindingNotAllowed {
pub span: Span,
}
#[derive(SessionDiagnostic)]
#[error = "E0439"]
pub struct SimdShuffleMissingLength {
#[message = "invalid `simd_shuffle`, needs length: `{name}`"]
pub span: Span,
pub name: Symbol,
}
#[derive(SessionDiagnostic)]
#[error = "E0436"]
pub struct FunctionalRecordUpdateOnNonStruct {