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Merged
merged 4 commits into from
Jun 2, 2025
Merged

Improve intrinsic handling in cg_ssa (part 2) #141760

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1f717ae
Use layout field of OperandRef and PlaceRef in codegen_intrinsic_call
bjorn3 May 30, 2025
38a6dae
Use layout field of OperandRef in generic_simd_intrinsic
bjorn3 May 30, 2025
0fcea3d
Avoid computing function type for intrinsic instances
bjorn3 May 30, 2025
284bec5
Directly use from_immediate for handling bool
bjorn3 May 30, 2025
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40 changes: 16 additions & 24 deletions compiler/rustc_codegen_gcc/src/intrinsic/mod.rs
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,7 @@ use rustc_codegen_ssa::traits::{
use rustc_middle::bug;
#[cfg(feature = "master")]
use rustc_middle::ty::layout::FnAbiOf;
use rustc_middle::ty::layout::{HasTypingEnv, LayoutOf};
use rustc_middle::ty::layout::LayoutOf;
use rustc_middle::ty::{self, Instance, Ty};
use rustc_span::{Span, Symbol, sym};
use rustc_target::callconv::{ArgAbi, PassMode};
Expand Down Expand Up @@ -205,21 +205,10 @@ impl<'a, 'gcc, 'tcx> IntrinsicCallBuilderMethods<'tcx> for Builder<'a, 'gcc, 'tc
span: Span,
) -> Result<(), Instance<'tcx>> {
let tcx = self.tcx;
let callee_ty = instance.ty(tcx, self.typing_env());

let (def_id, fn_args) = match *callee_ty.kind() {
ty::FnDef(def_id, fn_args) => (def_id, fn_args),
_ => bug!("expected fn item type, found {}", callee_ty),
};

let sig = callee_ty.fn_sig(tcx);
let sig = tcx.normalize_erasing_late_bound_regions(self.typing_env(), sig);
let arg_tys = sig.inputs();
let ret_ty = sig.output();
let name = tcx.item_name(def_id);
let name = tcx.item_name(instance.def_id());
let name_str = name.as_str();

let llret_ty = self.layout_of(ret_ty).gcc_type(self);
let fn_args = instance.args;

let simple = get_simple_intrinsic(self, name);
let simple_func = get_simple_function(self, name);
Expand Down Expand Up @@ -320,8 +309,7 @@ impl<'a, 'gcc, 'tcx> IntrinsicCallBuilderMethods<'tcx> for Builder<'a, 'gcc, 'tc
| sym::rotate_right
| sym::saturating_add
| sym::saturating_sub => {
let ty = arg_tys[0];
match int_type_width_signed(ty, self) {
match int_type_width_signed(args[0].layout.ty, self) {
Some((width, signed)) => match name {
sym::ctlz | sym::cttz => {
let func = self.current_func.borrow().expect("func");
Expand Down Expand Up @@ -400,7 +388,7 @@ impl<'a, 'gcc, 'tcx> IntrinsicCallBuilderMethods<'tcx> for Builder<'a, 'gcc, 'tc
tcx.dcx().emit_err(InvalidMonomorphization::BasicIntegerType {
span,
name,
ty,
ty: args[0].layout.ty,
});
return Ok(());
}
Expand Down Expand Up @@ -492,7 +480,14 @@ impl<'a, 'gcc, 'tcx> IntrinsicCallBuilderMethods<'tcx> for Builder<'a, 'gcc, 'tc
}

_ if name_str.starts_with("simd_") => {
match generic_simd_intrinsic(self, name, callee_ty, args, ret_ty, llret_ty, span) {
match generic_simd_intrinsic(
self,
name,
args,
result.layout.ty,
result.layout.gcc_type(self),
span,
) {
Ok(value) => value,
Err(()) => return Ok(()),
}
Expand All @@ -503,13 +498,10 @@ impl<'a, 'gcc, 'tcx> IntrinsicCallBuilderMethods<'tcx> for Builder<'a, 'gcc, 'tc
};

if result.layout.ty.is_bool() {
OperandRef::from_immediate_or_packed_pair(self, value, result.layout)
.val
.store(self, result);
let val = self.from_immediate(value);
self.store_to_place(val, result.val);
} else if !result.layout.ty.is_unit() {
let ptr_llty = self.type_ptr_to(result.layout.gcc_type(self));
let ptr = self.pointercast(result.val.llval, ptr_llty);
self.store(value, ptr, result.val.align);
self.store_to_place(value, result.val);
}
Ok(())
}
Expand Down
87 changes: 41 additions & 46 deletions compiler/rustc_codegen_gcc/src/intrinsic/simd.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,6 @@ use crate::context::CodegenCx;
pub fn generic_simd_intrinsic<'a, 'gcc, 'tcx>(
bx: &mut Builder<'a, 'gcc, 'tcx>,
name: Symbol,
callee_ty: Ty<'tcx>,
args: &[OperandRef<'tcx, RValue<'gcc>>],
ret_ty: Ty<'tcx>,
llret_ty: Type<'gcc>,
Expand All @@ -54,24 +53,17 @@ pub fn generic_simd_intrinsic<'a, 'gcc, 'tcx>(
};
}

let tcx = bx.tcx();
let sig = tcx.normalize_erasing_late_bound_regions(
ty::TypingEnv::fully_monomorphized(),
callee_ty.fn_sig(tcx),
);
let arg_tys = sig.inputs();

if name == sym::simd_select_bitmask {
require_simd!(
arg_tys[1],
InvalidMonomorphization::SimdArgument { span, name, ty: arg_tys[1] }
args[1].layout.ty,
InvalidMonomorphization::SimdArgument { span, name, ty: args[1].layout.ty }
);
let (len, _) = arg_tys[1].simd_size_and_type(bx.tcx());
let (len, _) = args[1].layout.ty.simd_size_and_type(bx.tcx());

let expected_int_bits = (len.max(8) - 1).next_power_of_two();
let expected_bytes = len / 8 + ((len % 8 > 0) as u64);

let mask_ty = arg_tys[0];
let mask_ty = args[0].layout.ty;
let mut mask = match *mask_ty.kind() {
ty::Int(i) if i.bit_width() == Some(expected_int_bits) => args[0].immediate(),
ty::Uint(i) if i.bit_width() == Some(expected_int_bits) => args[0].immediate(),
Expand Down Expand Up @@ -121,8 +113,11 @@ pub fn generic_simd_intrinsic<'a, 'gcc, 'tcx>(
}

// every intrinsic below takes a SIMD vector as its first argument
require_simd!(arg_tys[0], InvalidMonomorphization::SimdInput { span, name, ty: arg_tys[0] });
let in_ty = arg_tys[0];
require_simd!(
args[0].layout.ty,
InvalidMonomorphization::SimdInput { span, name, ty: args[0].layout.ty }
);
let in_ty = args[0].layout.ty;

let comparison = match name {
sym::simd_eq => Some(BinOp::Eq),
Expand All @@ -134,7 +129,7 @@ pub fn generic_simd_intrinsic<'a, 'gcc, 'tcx>(
_ => None,
};

let (in_len, in_elem) = arg_tys[0].simd_size_and_type(bx.tcx());
let (in_len, in_elem) = args[0].layout.ty.simd_size_and_type(bx.tcx());
if let Some(cmp_op) = comparison {
require_simd!(ret_ty, InvalidMonomorphization::SimdReturn { span, name, ty: ret_ty });

Expand Down Expand Up @@ -401,13 +396,13 @@ pub fn generic_simd_intrinsic<'a, 'gcc, 'tcx>(
#[cfg(feature = "master")]
if name == sym::simd_insert || name == sym::simd_insert_dyn {
require!(
in_elem == arg_tys[2],
in_elem == args[2].layout.ty,
InvalidMonomorphization::InsertedType {
span,
name,
in_elem,
in_ty,
out_ty: arg_tys[2]
out_ty: args[2].layout.ty
}
);

Expand Down Expand Up @@ -439,10 +434,10 @@ pub fn generic_simd_intrinsic<'a, 'gcc, 'tcx>(
let m_elem_ty = in_elem;
let m_len = in_len;
require_simd!(
arg_tys[1],
InvalidMonomorphization::SimdArgument { span, name, ty: arg_tys[1] }
args[1].layout.ty,
InvalidMonomorphization::SimdArgument { span, name, ty: args[1].layout.ty }
);
let (v_len, _) = arg_tys[1].simd_size_and_type(bx.tcx());
let (v_len, _) = args[1].layout.ty.simd_size_and_type(bx.tcx());
require!(
m_len == v_len,
InvalidMonomorphization::MismatchedLengths { span, name, m_len, v_len }
Expand Down Expand Up @@ -911,26 +906,26 @@ pub fn generic_simd_intrinsic<'a, 'gcc, 'tcx>(
// All types must be simd vector types
require_simd!(in_ty, InvalidMonomorphization::SimdFirst { span, name, ty: in_ty });
require_simd!(
arg_tys[1],
InvalidMonomorphization::SimdSecond { span, name, ty: arg_tys[1] }
args[1].layout.ty,
InvalidMonomorphization::SimdSecond { span, name, ty: args[1].layout.ty }
);
require_simd!(
arg_tys[2],
InvalidMonomorphization::SimdThird { span, name, ty: arg_tys[2] }
args[2].layout.ty,
InvalidMonomorphization::SimdThird { span, name, ty: args[2].layout.ty }
);
require_simd!(ret_ty, InvalidMonomorphization::SimdReturn { span, name, ty: ret_ty });

// Of the same length:
let (out_len, _) = arg_tys[1].simd_size_and_type(bx.tcx());
let (out_len2, _) = arg_tys[2].simd_size_and_type(bx.tcx());
let (out_len, _) = args[1].layout.ty.simd_size_and_type(bx.tcx());
let (out_len2, _) = args[2].layout.ty.simd_size_and_type(bx.tcx());
require!(
in_len == out_len,
InvalidMonomorphization::SecondArgumentLength {
span,
name,
in_len,
in_ty,
arg_ty: arg_tys[1],
arg_ty: args[1].layout.ty,
out_len
}
);
Expand All @@ -941,7 +936,7 @@ pub fn generic_simd_intrinsic<'a, 'gcc, 'tcx>(
name,
in_len,
in_ty,
arg_ty: arg_tys[2],
arg_ty: args[2].layout.ty,
out_len: out_len2
}
);
Expand Down Expand Up @@ -970,8 +965,8 @@ pub fn generic_simd_intrinsic<'a, 'gcc, 'tcx>(

// 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) = arg_tys[0].simd_size_and_type(bx.tcx());
let (_, element_ty1) = arg_tys[1].simd_size_and_type(bx.tcx());
let (_, element_ty0) = args[0].layout.ty.simd_size_and_type(bx.tcx());
let (_, element_ty1) = args[1].layout.ty.simd_size_and_type(bx.tcx());
let (pointer_count, underlying_ty) = match *element_ty1.kind() {
ty::RawPtr(p_ty, _) if p_ty == in_elem => {
(ptr_count(element_ty1), non_ptr(element_ty1))
Expand All @@ -983,7 +978,7 @@ pub fn generic_simd_intrinsic<'a, 'gcc, 'tcx>(
span,
name,
expected_element: element_ty1,
second_arg: arg_tys[1],
second_arg: args[1].layout.ty,
in_elem,
in_ty,
mutability: ExpectedPointerMutability::Not,
Expand All @@ -998,7 +993,7 @@ pub fn generic_simd_intrinsic<'a, 'gcc, 'tcx>(

// The element type of the third argument must be an integer type of any width:
// TODO: also support unsigned integers.
let (_, element_ty2) = arg_tys[2].simd_size_and_type(bx.tcx());
let (_, element_ty2) = args[2].layout.ty.simd_size_and_type(bx.tcx());
match *element_ty2.kind() {
ty::Int(_) => (),
_ => {
Expand Down Expand Up @@ -1030,25 +1025,25 @@ pub fn generic_simd_intrinsic<'a, 'gcc, 'tcx>(
// All types must be simd vector types
require_simd!(in_ty, InvalidMonomorphization::SimdFirst { span, name, ty: in_ty });
require_simd!(
arg_tys[1],
InvalidMonomorphization::SimdSecond { span, name, ty: arg_tys[1] }
args[1].layout.ty,
InvalidMonomorphization::SimdSecond { span, name, ty: args[1].layout.ty }
);
require_simd!(
arg_tys[2],
InvalidMonomorphization::SimdThird { span, name, ty: arg_tys[2] }
args[2].layout.ty,
InvalidMonomorphization::SimdThird { span, name, ty: args[2].layout.ty }
);

// Of the same length:
let (element_len1, _) = arg_tys[1].simd_size_and_type(bx.tcx());
let (element_len2, _) = arg_tys[2].simd_size_and_type(bx.tcx());
let (element_len1, _) = args[1].layout.ty.simd_size_and_type(bx.tcx());
let (element_len2, _) = args[2].layout.ty.simd_size_and_type(bx.tcx());
require!(
in_len == element_len1,
InvalidMonomorphization::SecondArgumentLength {
span,
name,
in_len,
in_ty,
arg_ty: arg_tys[1],
arg_ty: args[1].layout.ty,
out_len: element_len1
}
);
Expand All @@ -1059,7 +1054,7 @@ pub fn generic_simd_intrinsic<'a, 'gcc, 'tcx>(
name,
in_len,
in_ty,
arg_ty: arg_tys[2],
arg_ty: args[2].layout.ty,
out_len: element_len2
}
);
Expand All @@ -1082,9 +1077,9 @@ pub fn generic_simd_intrinsic<'a, 'gcc, 'tcx>(

// 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) = 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 (_, element_ty0) = args[0].layout.ty.simd_size_and_type(bx.tcx());
let (_, element_ty1) = args[1].layout.ty.simd_size_and_type(bx.tcx());
let (_, element_ty2) = args[2].layout.ty.simd_size_and_type(bx.tcx());
let (pointer_count, underlying_ty) = match *element_ty1.kind() {
ty::RawPtr(p_ty, mutbl) if p_ty == in_elem && mutbl == hir::Mutability::Mut => {
(ptr_count(element_ty1), non_ptr(element_ty1))
Expand All @@ -1096,7 +1091,7 @@ pub fn generic_simd_intrinsic<'a, 'gcc, 'tcx>(
span,
name,
expected_element: element_ty1,
second_arg: arg_tys[1],
second_arg: args[1].layout.ty,
in_elem,
in_ty,
mutability: ExpectedPointerMutability::Mut,
Expand Down Expand Up @@ -1194,8 +1189,8 @@ pub fn generic_simd_intrinsic<'a, 'gcc, 'tcx>(
return_error!(InvalidMonomorphization::ExpectedVectorElementType {
span,
name,
expected_element: arg_tys[0].simd_size_and_type(bx.tcx()).1,
vector_type: arg_tys[0],
expected_element: args[0].layout.ty.simd_size_and_type(bx.tcx()).1,
vector_type: args[0].layout.ty,
});
}
};
Expand Down
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