mod builder_methods;
mod byte_addressable_buffer;
mod ext_inst;
mod intrinsics;
pub mod libm_intrinsics;
mod spirv_asm;
pub use ext_inst::ExtInst;
use rustc_span::DUMMY_SP;
pub use spirv_asm::InstructionTable;
use crate::maybe_pqp_cg_ssa as rustc_codegen_ssa;
use crate::abi::ConvSpirvType;
use crate::builder_spirv::{BuilderCursor, SpirvValue, SpirvValueExt};
use crate::codegen_cx::CodegenCx;
use crate::spirv_type::SpirvType;
use rspirv::spirv::Word;
use rustc_codegen_ssa::mir::operand::{OperandRef, OperandValue};
use rustc_codegen_ssa::mir::place::PlaceRef;
use rustc_codegen_ssa::traits::{
AbiBuilderMethods, ArgAbiBuilderMethods, BackendTypes, BuilderMethods,
CoverageInfoBuilderMethods, DebugInfoBuilderMethods, StaticBuilderMethods,
TypeMembershipCodegenMethods,
};
use rustc_errors::{Diag, DiagMessage};
use rustc_middle::mir::coverage::CoverageKind;
use rustc_middle::span_bug;
use rustc_middle::ty::layout::{
FnAbiError, FnAbiOfHelpers, FnAbiRequest, HasTyCtxt, HasTypingEnv, LayoutError,
LayoutOfHelpers, TyAndLayout,
};
use rustc_middle::ty::{Instance, Ty, TyCtxt, TypingEnv};
use rustc_span::Span;
use rustc_span::def_id::DefId;
use rustc_target::abi::call::{ArgAbi, FnAbi, PassMode};
use rustc_target::abi::{HasDataLayout, Size, TargetDataLayout};
use rustc_target::spec::{HasTargetSpec, Target};
use std::ops::{Deref, Range};
pub struct Builder<'a, 'tcx> {
cx: &'a CodegenCx<'tcx>,
cursor: BuilderCursor,
current_fn: <Self as BackendTypes>::Function,
current_span: Option<Span>,
}
impl<'a, 'tcx> Builder<'a, 'tcx> {
pub fn emit(&self) -> std::cell::RefMut<'_, rspirv::dr::Builder> {
self.emit_with_cursor(self.cursor)
}
pub fn zombie(&self, word: Word, reason: &str) {
if let Some(current_span) = self.current_span {
self.zombie_with_span(word, current_span, reason);
} else {
self.zombie_no_span(word, reason);
}
}
pub fn validate_atomic(&self, ty: Word, to_zombie: Word) {
if !self.i8_i16_atomics_allowed {
match self.lookup_type(ty) {
SpirvType::Integer(width, _) if width < 32 => {
self.zombie(to_zombie, "atomic on i8 or i16 when disallowed by runtime");
}
_ => (),
}
}
}
#[track_caller]
pub fn struct_err(&self, msg: impl Into<DiagMessage>) -> Diag<'_> {
if let Some(current_span) = self.current_span {
self.tcx.dcx().struct_span_err(current_span, msg)
} else {
self.tcx.dcx().struct_err(msg)
}
}
#[track_caller]
pub fn err(&self, msg: impl Into<DiagMessage>) {
if let Some(current_span) = self.current_span {
self.tcx.dcx().span_err(current_span, msg);
} else {
self.tcx.dcx().err(msg);
}
}
#[track_caller]
pub fn fatal(&self, msg: impl Into<DiagMessage>) -> ! {
if let Some(current_span) = self.current_span {
self.tcx.dcx().span_fatal(current_span, msg)
} else {
self.tcx.dcx().fatal(msg)
}
}
pub fn span(&self) -> Span {
self.current_span.unwrap_or(DUMMY_SP)
}
pub fn type_ptr_to(&self, ty: Word) -> Word {
SpirvType::Pointer { pointee: ty }.def(self.span(), self)
}
fn rotate(&mut self, value: SpirvValue, shift: SpirvValue, is_left: bool) -> SpirvValue {
let width = match self.lookup_type(shift.ty) {
SpirvType::Integer(width, _) => width,
other => self.fatal(format!(
"cannot rotate non-integer type: {}",
other.debug(shift.ty, self)
)),
};
let int_size = self.constant_int(shift.ty, width.into());
let mask = self.constant_int(shift.ty, (width - 1).into());
let zero = self.constant_int(shift.ty, 0);
let bool = SpirvType::Bool.def(self.span(), self);
let mask_shift = self.and(shift, mask);
let sub = self.sub(int_size, mask_shift);
let (lhs, rhs) = if is_left {
(self.shl(value, mask_shift), self.lshr(value, sub))
} else {
(self.lshr(value, mask_shift), self.shl(value, sub))
};
let or = self.or(lhs, rhs);
let mask_is_zero = self
.emit()
.i_equal(bool, None, mask_shift.def(self), zero.def(self))
.unwrap()
.with_type(bool);
self.select(mask_is_zero, value, or)
}
}
impl<'a, 'tcx> Deref for Builder<'a, 'tcx> {
type Target = CodegenCx<'tcx>;
fn deref(&self) -> &Self::Target {
self.cx
}
}
impl<'a, 'tcx> CoverageInfoBuilderMethods<'tcx> for Builder<'a, 'tcx> {
fn add_coverage(&mut self, _instance: Instance<'tcx>, _kind: &CoverageKind) {}
}
impl<'a, 'tcx> DebugInfoBuilderMethods for Builder<'a, 'tcx> {
fn dbg_var_addr(
&mut self,
_dbg_var: Self::DIVariable,
_scope_metadata: Self::DILocation,
_variable_alloca: Self::Value,
_direct_offset: Size,
_indirect_offsets: &[Size],
_fragment: Option<Range<Size>>,
) {
todo!()
}
fn set_dbg_loc(&mut self, _: Self::DILocation) {
todo!()
}
fn clear_dbg_loc(&mut self) {
todo!()
}
fn get_dbg_loc(&self) -> Option<Self::DILocation> {
None
}
fn insert_reference_to_gdb_debug_scripts_section_global(&mut self) {
todo!()
}
fn set_var_name(&mut self, _value: Self::Value, _name: &str) {
todo!()
}
}
impl<'a, 'tcx> ArgAbiBuilderMethods<'tcx> for Builder<'a, 'tcx> {
fn store_fn_arg(
&mut self,
arg_abi: &ArgAbi<'tcx, Ty<'tcx>>,
idx: &mut usize,
dst: PlaceRef<'tcx, Self::Value>,
) {
fn next(bx: &Builder<'_, '_>, idx: &mut usize) -> SpirvValue {
let val = bx.function_parameter_values.borrow()[&bx.current_fn.def(bx)][*idx];
*idx += 1;
val
}
match arg_abi.mode {
PassMode::Ignore => {}
PassMode::Direct(_) => {
self.store_arg(arg_abi, next(self, idx), dst);
}
PassMode::Pair(..) => {
OperandValue::Pair(next(self, idx), next(self, idx)).store(self, dst);
}
PassMode::Cast { .. } | PassMode::Indirect { .. } => span_bug!(
self.span(),
"query hooks should've made this `PassMode` impossible: {:#?}",
arg_abi
),
}
}
fn store_arg(
&mut self,
arg_abi: &ArgAbi<'tcx, Ty<'tcx>>,
val: Self::Value,
dst: PlaceRef<'tcx, Self::Value>,
) {
match arg_abi.mode {
PassMode::Ignore => {}
PassMode::Direct(_) | PassMode::Pair(..) => {
OperandRef::from_immediate_or_packed_pair(self, val, arg_abi.layout)
.val
.store(self, dst);
}
PassMode::Cast { .. } | PassMode::Indirect { .. } => span_bug!(
self.span(),
"query hooks should've made this `PassMode` impossible: {:#?}",
arg_abi
),
}
}
fn arg_memory_ty(&self, arg_abi: &ArgAbi<'tcx, Ty<'tcx>>) -> Self::Type {
arg_abi.layout.spirv_type(self.span(), self)
}
}
impl<'a, 'tcx> AbiBuilderMethods<'tcx> for Builder<'a, 'tcx> {
fn get_param(&mut self, index: usize) -> Self::Value {
self.function_parameter_values.borrow()[&self.current_fn.def(self)][index]
}
}
impl<'a, 'tcx> StaticBuilderMethods for Builder<'a, 'tcx> {
fn get_static(&mut self, def_id: DefId) -> Self::Value {
self.cx.get_static(def_id)
}
}
impl<'a, 'tcx> BackendTypes for Builder<'a, 'tcx> {
type Value = <CodegenCx<'tcx> as BackendTypes>::Value;
type Metadata = <CodegenCx<'tcx> as BackendTypes>::Metadata;
type Function = <CodegenCx<'tcx> as BackendTypes>::Function;
type BasicBlock = <CodegenCx<'tcx> as BackendTypes>::BasicBlock;
type Type = <CodegenCx<'tcx> as BackendTypes>::Type;
type Funclet = <CodegenCx<'tcx> as BackendTypes>::Funclet;
type DIScope = <CodegenCx<'tcx> as BackendTypes>::DIScope;
type DIVariable = <CodegenCx<'tcx> as BackendTypes>::DIVariable;
type DILocation = <CodegenCx<'tcx> as BackendTypes>::DILocation;
}
impl<'a, 'tcx> HasTypingEnv<'tcx> for Builder<'a, 'tcx> {
fn typing_env(&self) -> TypingEnv<'tcx> {
self.cx.typing_env()
}
}
impl<'a, 'tcx> HasTargetSpec for Builder<'a, 'tcx> {
fn target_spec(&self) -> &Target {
self.cx.target_spec()
}
}
impl<'a, 'tcx> HasTyCtxt<'tcx> for Builder<'a, 'tcx> {
fn tcx(&self) -> TyCtxt<'tcx> {
self.cx.tcx
}
}
impl<'a, 'tcx> HasDataLayout for Builder<'a, 'tcx> {
fn data_layout(&self) -> &TargetDataLayout {
self.cx.data_layout()
}
}
impl<'tcx> LayoutOfHelpers<'tcx> for Builder<'_, 'tcx> {
type LayoutOfResult = TyAndLayout<'tcx>;
#[inline]
fn handle_layout_err(&self, err: LayoutError<'tcx>, span: Span, ty: Ty<'tcx>) -> ! {
self.cx.handle_layout_err(err, span, ty)
}
}
impl<'tcx> FnAbiOfHelpers<'tcx> for Builder<'_, 'tcx> {
type FnAbiOfResult = &'tcx FnAbi<'tcx, Ty<'tcx>>;
#[inline]
fn handle_fn_abi_err(
&self,
err: FnAbiError<'tcx>,
span: Span,
fn_abi_request: FnAbiRequest<'tcx>,
) -> ! {
self.cx.handle_fn_abi_err(err, span, fn_abi_request)
}
}
impl<'tcx> TypeMembershipCodegenMethods<'tcx> for CodegenCx<'tcx> {}