-use rustc::ty::layout::{FloatTy, Integer, Primitive};
+use rustc_index::vec::IndexVec;
+use rustc_middle::ty::SymbolName;
+use rustc_target::abi::call::FnAbi;
+use rustc_target::abi::{Integer, Primitive};
use rustc_target::spec::{HasTargetSpec, Target};
-use cranelift::codegen::ir::{InstructionData, Opcode, ValueDef};
-
+use crate::constant::ConstantCx;
use crate::prelude::*;
-pub fn mir_var(loc: Local) -> Variable {
- Variable::with_u32(loc.index() as u32)
-}
-
-pub fn pointer_ty(tcx: TyCtxt) -> types::Type {
+pub(crate) fn pointer_ty(tcx: TyCtxt<'_>) -> types::Type {
match tcx.data_layout.pointer_size.bits() {
16 => types::I16,
32 => types::I32,
}
}
-pub fn scalar_to_clif_type(tcx: TyCtxt, scalar: Scalar) -> Type {
+pub(crate) fn scalar_to_clif_type(tcx: TyCtxt<'_>, scalar: Scalar) -> Type {
match scalar.value {
Primitive::Int(int, _sign) => match int {
Integer::I8 => types::I8,
Integer::I64 => types::I64,
Integer::I128 => types::I128,
},
- Primitive::Float(flt) => match flt {
- FloatTy::F32 => types::F32,
- FloatTy::F64 => types::F64,
- },
+ Primitive::F32 => types::F32,
+ Primitive::F64 => types::F64,
Primitive::Pointer => pointer_ty(tcx),
}
}
-pub fn clif_type_from_ty<'tcx>(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>) -> Option<types::Type> {
- Some(match ty.sty {
+fn clif_type_from_ty<'tcx>(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>) -> Option<types::Type> {
+ Some(match ty.kind() {
ty::Bool => types::I8,
ty::Uint(size) => match size {
UintTy::U8 => types::I8,
pointer_ty(tcx)
}
}
+ ty::Adt(adt_def, _) if adt_def.repr.simd() => {
+ let (element, count) = match &tcx.layout_of(ParamEnv::reveal_all().and(ty)).unwrap().abi
+ {
+ Abi::Vector { element, count } => (element.clone(), *count),
+ _ => unreachable!(),
+ };
+
+ match scalar_to_clif_type(tcx, element).by(u16::try_from(count).unwrap()) {
+ // Cranelift currently only implements icmp for 128bit vectors.
+ Some(vector_ty) if vector_ty.bits() == 128 => vector_ty,
+ _ => return None,
+ }
+ }
ty::Param(_) => bug!("ty param {:?}", ty),
_ => return None,
})
}
+fn clif_pair_type_from_ty<'tcx>(
+ tcx: TyCtxt<'tcx>,
+ ty: Ty<'tcx>,
+) -> Option<(types::Type, types::Type)> {
+ Some(match ty.kind() {
+ ty::Tuple(substs) if substs.len() == 2 => {
+ let mut types = substs.types();
+ let a = clif_type_from_ty(tcx, types.next().unwrap())?;
+ let b = clif_type_from_ty(tcx, types.next().unwrap())?;
+ if a.is_vector() || b.is_vector() {
+ return None;
+ }
+ (a, b)
+ }
+ ty::RawPtr(TypeAndMut { ty: pointee_ty, mutbl: _ }) | ty::Ref(_, pointee_ty, _) => {
+ if has_ptr_meta(tcx, pointee_ty) {
+ (pointer_ty(tcx), pointer_ty(tcx))
+ } else {
+ return None;
+ }
+ }
+ _ => return None,
+ })
+}
+
/// Is a pointer to this type a fat ptr?
-pub fn has_ptr_meta<'tcx>(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>) -> bool {
- let ptr_ty = tcx.mk_ptr(TypeAndMut { ty, mutbl: rustc::hir::Mutability::MutImmutable });
+pub(crate) fn has_ptr_meta<'tcx>(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>) -> bool {
+ let ptr_ty = tcx.mk_ptr(TypeAndMut { ty, mutbl: rustc_hir::Mutability::Not });
match &tcx.layout_of(ParamEnv::reveal_all().and(ptr_ty)).unwrap().abi {
Abi::Scalar(_) => false,
Abi::ScalarPair(_, _) => true,
}
}
-pub fn codegen_select(bcx: &mut FunctionBuilder, cond: Value, lhs: Value, rhs: Value) -> Value {
- let lhs_ty = bcx.func.dfg.value_type(lhs);
- let rhs_ty = bcx.func.dfg.value_type(rhs);
- assert_eq!(lhs_ty, rhs_ty);
- if lhs_ty == types::I8 || lhs_ty == types::I16 {
- // FIXME workaround for missing encoding for select.i8
- let lhs = bcx.ins().uextend(types::I32, lhs);
- let rhs = bcx.ins().uextend(types::I32, rhs);
- let res = bcx.ins().select(cond, lhs, rhs);
- bcx.ins().ireduce(lhs_ty, res)
- } else {
- bcx.ins().select(cond, lhs, rhs)
- }
-}
-
-pub fn codegen_icmp(
- fx: &mut FunctionCx<'_, '_, impl Backend>,
- intcc: IntCC,
- lhs: Value,
- rhs: Value,
-) -> Value {
- let lhs_ty = fx.bcx.func.dfg.value_type(lhs);
- let rhs_ty = fx.bcx.func.dfg.value_type(rhs);
- assert_eq!(lhs_ty, rhs_ty);
- if lhs_ty == types::I128 {
- // FIXME legalize `icmp.i128` in Cranelift
-
- let (lhs_lsb, lhs_msb) = fx.bcx.ins().isplit(lhs);
- let (rhs_lsb, rhs_msb) = fx.bcx.ins().isplit(rhs);
-
- match intcc {
- IntCC::Equal => {
- let lsb_eq = fx.bcx.ins().icmp(IntCC::Equal, lhs_lsb, rhs_lsb);
- let msb_eq = fx.bcx.ins().icmp(IntCC::Equal, lhs_msb, rhs_msb);
- fx.bcx.ins().band(lsb_eq, msb_eq)
- }
- IntCC::NotEqual => {
- let lsb_ne = fx.bcx.ins().icmp(IntCC::NotEqual, lhs_lsb, rhs_lsb);
- let msb_ne = fx.bcx.ins().icmp(IntCC::NotEqual, lhs_msb, rhs_msb);
- fx.bcx.ins().bor(lsb_ne, msb_ne)
- }
- _ => {
- // if msb_eq {
- // lsb_cc
- // } else {
- // msb_cc
- // }
-
- let msb_eq = fx.bcx.ins().icmp(IntCC::Equal, lhs_msb, rhs_msb);
- let lsb_cc = fx.bcx.ins().icmp(intcc, lhs_lsb, rhs_lsb);
- let msb_cc = fx.bcx.ins().icmp(intcc, lhs_msb, rhs_msb);
-
- fx.bcx.ins().select(msb_eq, lsb_cc, msb_cc)
- }
- }
- } else {
- fx.bcx.ins().icmp(intcc, lhs, rhs)
- }
-}
-
-pub fn codegen_icmp_imm(
- fx: &mut FunctionCx<'_, '_, impl Backend>,
+pub(crate) fn codegen_icmp_imm(
+ fx: &mut FunctionCx<'_, '_, '_>,
intcc: IntCC,
lhs: Value,
rhs: i128,
}
}
-fn resolve_normal_value_imm(func: &Function, val: Value) -> Option<i64> {
- if let ValueDef::Result(inst, 0 /*param*/) = func.dfg.value_def(val) {
- if let InstructionData::UnaryImm {
- opcode: Opcode::Iconst,
- imm,
- } = func.dfg[inst]
- {
- Some(imm.into())
- } else {
- None
- }
- } else {
- None
- }
-}
+pub(crate) fn type_min_max_value(
+ bcx: &mut FunctionBuilder<'_>,
+ ty: Type,
+ signed: bool,
+) -> (Value, Value) {
+ assert!(ty.is_int());
-fn resolve_128bit_value_imm(func: &Function, val: Value) -> Option<u128> {
- let (lsb, msb) = if let ValueDef::Result(inst, 0 /*param*/) = func.dfg.value_def(val) {
- if let InstructionData::Binary {
- opcode: Opcode::Iconcat,
- args: [lsb, msb],
- } = func.dfg[inst]
- {
- (lsb, msb)
- } else {
- return None;
- }
- } else {
- return None;
- };
+ if ty == types::I128 {
+ if signed {
+ let min = i128::MIN as u128;
+ let min_lsb = bcx.ins().iconst(types::I64, min as u64 as i64);
+ let min_msb = bcx.ins().iconst(types::I64, (min >> 64) as u64 as i64);
+ let min = bcx.ins().iconcat(min_lsb, min_msb);
- let lsb = resolve_normal_value_imm(func, lsb)? as u64 as u128;
- let msb = resolve_normal_value_imm(func, msb)? as u64 as u128;
+ let max = i128::MAX as u128;
+ let max_lsb = bcx.ins().iconst(types::I64, max as u64 as i64);
+ let max_msb = bcx.ins().iconst(types::I64, (max >> 64) as u64 as i64);
+ let max = bcx.ins().iconcat(max_lsb, max_msb);
- Some(msb << 64 | lsb)
-}
+ return (min, max);
+ } else {
+ let min_half = bcx.ins().iconst(types::I64, 0);
+ let min = bcx.ins().iconcat(min_half, min_half);
-pub fn resolve_value_imm(func: &Function, val: Value) -> Option<u128> {
- if func.dfg.value_type(val) == types::I128 {
- resolve_128bit_value_imm(func, val)
- } else {
- resolve_normal_value_imm(func, val).map(|imm| imm as u64 as u128)
+ let max_half = bcx.ins().iconst(types::I64, u64::MAX as i64);
+ let max = bcx.ins().iconcat(max_half, max_half);
+
+ return (min, max);
+ }
}
-}
-pub fn type_min_max_value(ty: Type, signed: bool) -> (i64, i64) {
- assert!(ty.is_int());
let min = match (ty, signed) {
(types::I8, false) | (types::I16, false) | (types::I32, false) | (types::I64, false) => {
0i64
}
- (types::I8, true) => i8::min_value() as i64,
- (types::I16, true) => i16::min_value() as i64,
- (types::I32, true) => i32::min_value() as i64,
- (types::I64, true) => i64::min_value(),
- (types::I128, _) => unimplemented!(),
+ (types::I8, true) => i64::from(i8::MIN),
+ (types::I16, true) => i64::from(i16::MIN),
+ (types::I32, true) => i64::from(i32::MIN),
+ (types::I64, true) => i64::MIN,
_ => unreachable!(),
};
let max = match (ty, signed) {
- (types::I8, false) => u8::max_value() as i64,
- (types::I16, false) => u16::max_value() as i64,
- (types::I32, false) => u32::max_value() as i64,
- (types::I64, false) => u64::max_value() as i64,
- (types::I8, true) => i8::max_value() as i64,
- (types::I16, true) => i16::max_value() as i64,
- (types::I32, true) => i32::max_value() as i64,
- (types::I64, true) => i64::max_value(),
- (types::I128, _) => unimplemented!(),
+ (types::I8, false) => i64::from(u8::MAX),
+ (types::I16, false) => i64::from(u16::MAX),
+ (types::I32, false) => i64::from(u32::MAX),
+ (types::I64, false) => u64::MAX as i64,
+ (types::I8, true) => i64::from(i8::MAX),
+ (types::I16, true) => i64::from(i16::MAX),
+ (types::I32, true) => i64::from(i32::MAX),
+ (types::I64, true) => i64::MAX,
_ => unreachable!(),
};
+ let (min, max) = (bcx.ins().iconst(ty, min), bcx.ins().iconst(ty, max));
+
(min, max)
}
-pub fn type_sign(ty: Ty<'_>) -> bool {
- match ty.sty {
+pub(crate) fn type_sign(ty: Ty<'_>) -> bool {
+ match ty.kind() {
ty::Ref(..) | ty::RawPtr(..) | ty::FnPtr(..) | ty::Char | ty::Uint(..) | ty::Bool => false,
ty::Int(..) => true,
ty::Float(..) => false, // `signed` is unused for floats
}
}
-pub struct FunctionCx<'clif, 'tcx, B: Backend + 'static> {
- // FIXME use a reference to `CodegenCx` instead of `tcx`, `module` and `constants` and `caches`
- pub tcx: TyCtxt<'tcx>,
- pub module: &'clif mut Module<B>,
- pub pointer_type: Type, // Cached from module
+pub(crate) struct FunctionCx<'m, 'clif, 'tcx: 'm> {
+ pub(crate) cx: &'clif mut crate::CodegenCx<'tcx>,
+ pub(crate) module: &'m mut dyn Module,
+ pub(crate) tcx: TyCtxt<'tcx>,
+ pub(crate) pointer_type: Type, // Cached from module
+ pub(crate) constants_cx: ConstantCx,
- pub instance: Instance<'tcx>,
- pub mir: &'tcx Body<'tcx>,
+ pub(crate) instance: Instance<'tcx>,
+ pub(crate) symbol_name: SymbolName<'tcx>,
+ pub(crate) mir: &'tcx Body<'tcx>,
+ pub(crate) fn_abi: Option<FnAbi<'tcx, Ty<'tcx>>>,
- pub bcx: FunctionBuilder,
- pub ebb_map: HashMap<BasicBlock, Ebb>,
- pub local_map: HashMap<Local, CPlace<'tcx>>,
+ pub(crate) bcx: FunctionBuilder<'clif>,
+ pub(crate) block_map: IndexVec<BasicBlock, Block>,
+ pub(crate) local_map: IndexVec<Local, CPlace<'tcx>>,
- pub clif_comments: crate::pretty_clif::CommentWriter,
- pub constants_cx: &'clif mut crate::constant::ConstantCx,
- pub caches: &'clif mut Caches<'tcx>,
- pub source_info_set: indexmap::IndexSet<SourceInfo>,
+ /// When `#[track_caller]` is used, the implicit caller location is stored in this variable.
+ pub(crate) caller_location: Option<CValue<'tcx>>,
+
+ pub(crate) clif_comments: crate::pretty_clif::CommentWriter,
+ pub(crate) source_info_set: indexmap::IndexSet<SourceInfo>,
+
+ /// This should only be accessed by `CPlace::new_var`.
+ pub(crate) next_ssa_var: u32,
+
+ pub(crate) inline_asm_index: u32,
}
-impl<'tcx, B: Backend> LayoutOf for FunctionCx<'_, 'tcx, B> {
+impl<'tcx> LayoutOf for FunctionCx<'_, '_, 'tcx> {
type Ty = Ty<'tcx>;
- type TyLayout = TyLayout<'tcx>;
+ type TyAndLayout = TyAndLayout<'tcx>;
- fn layout_of(&self, ty: Ty<'tcx>) -> TyLayout<'tcx> {
- let ty = self.monomorphize(&ty);
- self.tcx
- .layout_of(ParamEnv::reveal_all().and(&ty))
- .unwrap_or_else(|e| {
- if let layout::LayoutError::SizeOverflow(_) = e {
- self.tcx.sess.fatal(&e.to_string())
- } else {
- bug!("failed to get layout for `{}`: {}", ty, e)
- }
- })
+ fn layout_of(&self, ty: Ty<'tcx>) -> TyAndLayout<'tcx> {
+ RevealAllLayoutCx(self.tcx).layout_of(ty)
}
}
-impl<'tcx, B: Backend + 'static> layout::HasTyCtxt<'tcx> for FunctionCx<'_, 'tcx, B> {
+impl<'tcx> layout::HasTyCtxt<'tcx> for FunctionCx<'_, '_, 'tcx> {
fn tcx<'b>(&'b self) -> TyCtxt<'tcx> {
self.tcx
}
}
-impl<'tcx, B: Backend + 'static> layout::HasDataLayout for FunctionCx<'_, 'tcx, B> {
- fn data_layout(&self) -> &layout::TargetDataLayout {
+impl<'tcx> rustc_target::abi::HasDataLayout for FunctionCx<'_, '_, 'tcx> {
+ fn data_layout(&self) -> &rustc_target::abi::TargetDataLayout {
&self.tcx.data_layout
}
}
-impl<'tcx, B: Backend + 'static> layout::HasParamEnv<'tcx> for FunctionCx<'_, 'tcx, B> {
+impl<'tcx> layout::HasParamEnv<'tcx> for FunctionCx<'_, '_, 'tcx> {
fn param_env(&self) -> ParamEnv<'tcx> {
ParamEnv::reveal_all()
}
}
-impl<'tcx, B: Backend + 'static> HasTargetSpec for FunctionCx<'_, 'tcx, B> {
+impl<'tcx> HasTargetSpec for FunctionCx<'_, '_, 'tcx> {
fn target_spec(&self) -> &Target {
- &self.tcx.sess.target.target
+ &self.tcx.sess.target
}
}
-impl<'tcx, B: Backend> BackendTypes for FunctionCx<'_, 'tcx, B> {
- type Value = Value;
- type BasicBlock = Ebb;
- type Type = Type;
- type Funclet = !;
- type DIScope = !;
-}
-
-impl<'tcx, B: Backend + 'static> FunctionCx<'_, 'tcx, B> {
- pub fn monomorphize<T>(&self, value: &T) -> T
+impl<'tcx> FunctionCx<'_, '_, 'tcx> {
+ pub(crate) fn monomorphize<T>(&self, value: T) -> T
where
- T: TypeFoldable<'tcx>,
+ T: TypeFoldable<'tcx> + Copy,
{
- self.tcx.subst_and_normalize_erasing_regions(
- self.instance.substs,
+ self.instance.subst_mir_and_normalize_erasing_regions(
+ self.tcx,
ty::ParamEnv::reveal_all(),
value,
)
}
- pub fn clif_type(&self, ty: Ty<'tcx>) -> Option<Type> {
- clif_type_from_ty(self.tcx, self.monomorphize(&ty))
+ pub(crate) fn clif_type(&self, ty: Ty<'tcx>) -> Option<Type> {
+ clif_type_from_ty(self.tcx, ty)
+ }
+
+ pub(crate) fn clif_pair_type(&self, ty: Ty<'tcx>) -> Option<(Type, Type)> {
+ clif_pair_type_from_ty(self.tcx, ty)
}
- pub fn get_ebb(&self, bb: BasicBlock) -> Ebb {
- *self.ebb_map.get(&bb).unwrap()
+ pub(crate) fn get_block(&self, bb: BasicBlock) -> Block {
+ *self.block_map.get(bb).unwrap()
}
- pub fn get_local_place(&mut self, local: Local) -> CPlace<'tcx> {
- *self.local_map.get(&local).unwrap()
+ pub(crate) fn get_local_place(&mut self, local: Local) -> CPlace<'tcx> {
+ *self.local_map.get(local).unwrap_or_else(|| {
+ panic!("Local {:?} doesn't exist", local);
+ })
}
- pub fn set_debug_loc(&mut self, source_info: mir::SourceInfo) {
+ pub(crate) fn set_debug_loc(&mut self, source_info: mir::SourceInfo) {
let (index, _) = self.source_info_set.insert_full(source_info);
self.bcx.set_srcloc(SourceLoc::new(index as u32));
}
+
+ pub(crate) fn get_caller_location(&mut self, span: Span) -> CValue<'tcx> {
+ if let Some(loc) = self.caller_location {
+ // `#[track_caller]` is used; return caller location instead of current location.
+ return loc;
+ }
+
+ let topmost = span.ctxt().outer_expn().expansion_cause().unwrap_or(span);
+ let caller = self.tcx.sess.source_map().lookup_char_pos(topmost.lo());
+ let const_loc = self.tcx.const_caller_location((
+ rustc_span::symbol::Symbol::intern(
+ &caller.file.name.prefer_remapped().to_string_lossy(),
+ ),
+ caller.line as u32,
+ caller.col_display as u32 + 1,
+ ));
+ crate::constant::codegen_const_value(self, const_loc, self.tcx.caller_location_ty())
+ }
+
+ pub(crate) fn triple(&self) -> &target_lexicon::Triple {
+ self.module.isa().triple()
+ }
+
+ pub(crate) fn anonymous_str(&mut self, msg: &str) -> Value {
+ let mut data_ctx = DataContext::new();
+ data_ctx.define(msg.as_bytes().to_vec().into_boxed_slice());
+ let msg_id = self.module.declare_anonymous_data(false, false).unwrap();
+
+ // Ignore DuplicateDefinition error, as the data will be the same
+ let _ = self.module.define_data(msg_id, &data_ctx);
+
+ let local_msg_id = self.module.declare_data_in_func(msg_id, self.bcx.func);
+ if self.clif_comments.enabled() {
+ self.add_comment(local_msg_id, msg);
+ }
+ self.bcx.ins().global_value(self.pointer_type, local_msg_id)
+ }
+}
+
+pub(crate) struct RevealAllLayoutCx<'tcx>(pub(crate) TyCtxt<'tcx>);
+
+impl<'tcx> LayoutOf for RevealAllLayoutCx<'tcx> {
+ type Ty = Ty<'tcx>;
+ type TyAndLayout = TyAndLayout<'tcx>;
+
+ fn layout_of(&self, ty: Ty<'tcx>) -> TyAndLayout<'tcx> {
+ assert!(!ty.still_further_specializable());
+ self.0.layout_of(ParamEnv::reveal_all().and(&ty)).unwrap_or_else(|e| {
+ if let layout::LayoutError::SizeOverflow(_) = e {
+ self.0.sess.fatal(&e.to_string())
+ } else {
+ bug!("failed to get layout for `{}`: {}", ty, e)
+ }
+ })
+ }
+}
+
+impl<'tcx> layout::HasTyCtxt<'tcx> for RevealAllLayoutCx<'tcx> {
+ fn tcx<'b>(&'b self) -> TyCtxt<'tcx> {
+ self.0
+ }
+}
+
+impl<'tcx> rustc_target::abi::HasDataLayout for RevealAllLayoutCx<'tcx> {
+ fn data_layout(&self) -> &rustc_target::abi::TargetDataLayout {
+ &self.0.data_layout
+ }
+}
+
+impl<'tcx> layout::HasParamEnv<'tcx> for RevealAllLayoutCx<'tcx> {
+ fn param_env(&self) -> ParamEnv<'tcx> {
+ ParamEnv::reveal_all()
+ }
+}
+
+impl<'tcx> HasTargetSpec for RevealAllLayoutCx<'tcx> {
+ fn target_spec(&self) -> &Target {
+ &self.0.sess.target
+ }
}
projects / rust.git / blobdiff