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remove internal simd_size_and_ty from llvm backend

This commit is contained in:
Ashley Mannix 2020-11-13 14:32:03 +10:00
parent 540b5db630
commit 045105b1a2
2 changed files with 23 additions and 35 deletions
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51
compiler/rustc_codegen_llvm/src/intrinsic.rs
View File

@ -740,23 +740,6 @@ fn generic_simd_intrinsic(
llret_ty: &'ll Type,
span: Span,
) -> Result<&'ll Value, ()> {
// Given a SIMD vector type `x` return the element type and the number of
// elements in the vector.
fn simd_ty_and_len(bx: &Builder<'a, 'll, 'tcx>, simd_ty: Ty<'tcx>) -> (Ty<'tcx>, u64) {
let ty = if let ty::Adt(_def, _substs) = simd_ty.kind() {
let f0_ty = bx.layout_of(simd_ty).field(bx, 0).ty;
if let ty::Array(element_ty, _) = f0_ty.kind() { element_ty } else { f0_ty }
} else {
bug!("should only be called with a SIMD type")
};
let count = if let abi::Abi::Vector { count, .. } = bx.layout_of(simd_ty).abi {
count
} else {
bug!("should only be called with a SIMD type")
};
(ty, count)
}
// macros for error handling:
macro_rules! emit_error {
($msg: tt) => {
@ -809,7 +792,7 @@ fn generic_simd_intrinsic(
_ => return_error!("`{}` is not an integral type", in_ty),
};
require_simd!(arg_tys[1], "argument");
let (_, v_len) = simd_ty_and_len(bx, arg_tys[1]);
let (v_len, _) = arg_tys[1].simd_size_and_type(bx.tcx());
require!(
// Allow masks for vectors with fewer than 8 elements to be
// represented with a u8 or i8.
@ -840,11 +823,11 @@ fn generic_simd_intrinsic(
_ => None,
};
let (in_elem, in_len) = simd_ty_and_len(bx, arg_tys[0]);
let (in_len, in_elem) = arg_tys[0].simd_size_and_type(bx.tcx());
if let Some(cmp_op) = comparison {
require_simd!(ret_ty, "return");
let (out_ty, out_len) = simd_ty_and_len(bx, ret_ty);
let (out_len, out_ty) = ret_ty.simd_size_and_type(bx.tcx());
require!(
in_len == out_len,
"expected return type with length {} (same as input type `{}`), \
@ -878,7 +861,7 @@ fn generic_simd_intrinsic(
require_simd!(ret_ty, "return");
let (out_ty, out_len) = simd_ty_and_len(bx, ret_ty);
let (out_len, out_ty) = ret_ty.simd_size_and_type(bx.tcx());
require!(
out_len == n,
"expected return type of length {}, found `{}` with length {}",
@ -962,7 +945,7 @@ fn generic_simd_intrinsic(
let m_elem_ty = in_elem;
let m_len = in_len;
require_simd!(arg_tys[1], "argument");
let (_, v_len) = simd_ty_and_len(bx, arg_tys[1]);
let (v_len, _) = arg_tys[1].simd_size_and_type(bx.tcx());
require!(
m_len == v_len,
"mismatched lengths: mask length `{}` != other vector length `{}`",
@ -1187,8 +1170,8 @@ fn generic_simd_intrinsic(
require_simd!(ret_ty, "return");
// Of the same length:
let (_, out_len) = simd_ty_and_len(bx, arg_tys[1]);
let (_, out_len2) = simd_ty_and_len(bx, arg_tys[2]);
let (out_len, _) = arg_tys[1].simd_size_and_type(bx.tcx());
let (out_len2, _) = arg_tys[2].simd_size_and_type(bx.tcx());
require!(
in_len == out_len,
"expected {} argument with length {} (same as input type `{}`), \
@ -1231,8 +1214,8 @@ fn generic_simd_intrinsic(
// The second argument must be a simd vector with an element type that's a pointer
// to the element type of the first argument
let (element_ty0, _) = simd_ty_and_len(bx, arg_tys[0]);
let (element_ty1, _) = simd_ty_and_len(bx, arg_tys[1]);
let (_, element_ty0) = arg_tys[0].simd_size_and_type(bx.tcx());
let (_, element_ty1) = arg_tys[1].simd_size_and_type(bx.tcx());
let (pointer_count, underlying_ty) = match element_ty1.kind() {
ty::RawPtr(p) if p.ty == in_elem => (ptr_count(element_ty1), non_ptr(element_ty1)),
_ => {
@ -1256,7 +1239,7 @@ fn generic_simd_intrinsic(
assert_eq!(underlying_ty, non_ptr(element_ty0));
// The element type of the third argument must be a signed integer type of any width:
let (element_ty2, _) = simd_ty_and_len(bx, arg_tys[2]);
let (_, element_ty2) = arg_tys[2].simd_size_and_type(bx.tcx());
match element_ty2.kind() {
ty::Int(_) => (),
_ => {
@ -1316,8 +1299,8 @@ fn generic_simd_intrinsic(
require_simd!(arg_tys[2], "third");
// Of the same length:
let (_, element_len1) = simd_ty_and_len(bx, arg_tys[1]);
let (_, element_len2) = simd_ty_and_len(bx, arg_tys[2]);
let (element_len1, _) = arg_tys[1].simd_size_and_type(bx.tcx());
let (element_len2, _) = arg_tys[2].simd_size_and_type(bx.tcx());
require!(
in_len == element_len1,
"expected {} argument with length {} (same as input type `{}`), \
@ -1357,9 +1340,9 @@ fn generic_simd_intrinsic(
// The second argument must be a simd vector with an element type that's a pointer
// to the element type of the first argument
let (element_ty0, _element_len0) = simd_ty_and_len(bx, arg_tys[0]);
let (element_ty1, _element_len1) = simd_ty_and_len(bx, arg_tys[1]);
let (element_ty2, _element_len2) = simd_ty_and_len(bx, arg_tys[2]);
let (_, element_ty0) = arg_tys[0].simd_size_and_type(bx.tcx());
let (_, element_ty1) = arg_tys[1].simd_size_and_type(bx.tcx());
let (_, element_ty2) = arg_tys[2].simd_size_and_type(bx.tcx());
let (pointer_count, underlying_ty) = match element_ty1.kind() {
ty::RawPtr(p) if p.ty == in_elem && p.mutbl == hir::Mutability::Mut => {
(ptr_count(element_ty1), non_ptr(element_ty1))
@ -1589,7 +1572,7 @@ unsupported {} from `{}` with element `{}` of size `{}` to `{}`"#,
if name == sym::simd_cast {
require_simd!(ret_ty, "return");
let (out_elem, out_len) = simd_ty_and_len(bx, ret_ty);
let (out_len, out_elem) = ret_ty.simd_size_and_type(bx.tcx());
require!(
in_len == out_len,
"expected return type with length {} (same as input type `{}`), \
@ -1715,7 +1698,7 @@ unsupported {} from `{}` with element `{}` of size `{}` to `{}`"#,
return_error!(
"expected element type `{}` of vector type `{}` \
to be a signed or unsigned integer type",
simd_ty_and_len(bx, arg_tys[0]).0,
arg_tys[0].simd_size_and_type(bx.tcx()).1,
arg_tys[0]
);
}

7
compiler/rustc_middle/src/ty/sty.rs
View File

@ -1963,7 +1963,12 @@ impl<'tcx> TyS<'tcx> {
match self.kind() {
Adt(def, substs) => {
let variant = def.non_enum_variant();
(variant.fields.len() as u64, variant.fields[0].ty(tcx, substs))
let f0_ty = variant.fields[0].ty(tcx, substs);
match f0_ty.kind() {
Array(f0_elem_ty, f0_len) => (f0_len.eval_usize(tcx, ParamEnv::empty()) as u64, f0_elem_ty),
_ => (variant.fields.len() as u64, f0_ty),
}
}
_ => bug!("`simd_size_and_type` called on invalid type"),
}