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Add simd_bswap intrinsic

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This commit is contained in:
Caleb Zulawski 2023-07-27 23:04:14 -04:00
parent 0eb5efc7ae
commit 3ea0e6e3fb
6 changed files with 63 additions and 16 deletions
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22
compiler/rustc_codegen_llvm/src/intrinsic.rs
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@ -2074,6 +2074,28 @@ fn generic_simd_intrinsic<'ll, 'tcx>(
simd_neg: Int => neg, Float => fneg;
}
if name == sym::simd_bswap {
let vec_ty = bx.cx.type_vector(
match *in_elem.kind() {
ty::Int(i) => bx.cx.type_int_from_ty(i),
ty::Uint(i) => bx.cx.type_uint_from_ty(i),
_ => return_error!(InvalidMonomorphization::UnsupportedOperation {
span,
name,
in_ty,
in_elem
}),
},
in_len as u64,
);
let llvm_intrinsic =
&format!("llvm.bswap.v{}i{}", in_len, in_elem.int_size_and_signed(bx.tcx()).0.bits(),);
let fn_ty = bx.type_func(&[vec_ty], vec_ty);
let f = bx.declare_cfn(llvm_intrinsic, llvm::UnnamedAddr::No, fn_ty);
let v = bx.call(fn_ty, None, None, f, &[args[0].immediate()], None);
return Ok(v);
}
if name == sym::simd_arith_offset {
// This also checks that the first operand is a ptr type.
let pointee = in_elem.builtin_deref(true).unwrap_or_else(|| {