bjoernager/rust
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Merge commit '97e5045493' into sync_cg_clif-2021-12-20

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bjorn3 2021-12-20 18:56:35 +01:00
commit 3426a730ff
36 changed files with 1017 additions and 532 deletions
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62
compiler/rustc_codegen_cranelift/src/value_and_place.rs
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@ -329,7 +329,6 @@ impl<'tcx> CPlace<'tcx> {
// FIXME Don't force the size to a multiple of 16 bytes once Cranelift gets a way to
// specify stack slot alignment.
size: (u32::try_from(layout.size.bytes()).unwrap() + 15) / 16 * 16,
offset: None,
});
CPlace { inner: CPlaceInner::Addr(Pointer::stack_slot(stack_slot), None), layout }
}
@ -472,7 +471,6 @@ impl<'tcx> CPlace<'tcx> {
// FIXME Don't force the size to a multiple of 16 bytes once Cranelift gets a way to
// specify stack slot alignment.
size: (src_ty.bytes() + 15) / 16 * 16,
offset: None,
});
let ptr = Pointer::stack_slot(stack_slot);
ptr.store(fx, data, MemFlags::trusted());
@ -512,6 +510,26 @@ impl<'tcx> CPlace<'tcx> {
let dst_layout = self.layout();
let to_ptr = match self.inner {
CPlaceInner::Var(_local, var) => {
if let ty::Array(element, len) = dst_layout.ty.kind() {
// Can only happen for vector types
let len =
u16::try_from(len.eval_usize(fx.tcx, ParamEnv::reveal_all())).unwrap();
let vector_ty = fx.clif_type(element).unwrap().by(len).unwrap();
let data = match from.0 {
CValueInner::ByRef(ptr, None) => {
let mut flags = MemFlags::new();
flags.set_notrap();
ptr.load(fx, vector_ty, flags)
}
CValueInner::ByVal(_)
| CValueInner::ByValPair(_, _)
| CValueInner::ByRef(_, Some(_)) => bug!("array should be ByRef"),
};
fx.bcx.def_var(var, data);
return;
}
let data = CValue(from.0, dst_layout).load_scalar(fx);
let dst_ty = fx.clif_type(self.layout().ty).unwrap();
transmute_value(fx, var, data, dst_ty);
@ -583,7 +601,7 @@ impl<'tcx> CPlace<'tcx> {
let src_align = src_layout.align.abi.bytes() as u8;
let dst_align = dst_layout.align.abi.bytes() as u8;
fx.bcx.emit_small_memory_copy(
fx.module.target_config(),
fx.target_config,
to_addr,
from_addr,
size,
@ -605,14 +623,39 @@ impl<'tcx> CPlace<'tcx> {
let layout = self.layout();
match self.inner {
CPlaceInner::Var(local, var) => {
if let Abi::Vector { .. } = layout.abi {
CPlaceInner::Var(local, var) => match layout.ty.kind() {
ty::Array(_, _) => {
// Can only happen for vector types
return CPlace {
inner: CPlaceInner::VarLane(local, var, field.as_u32().try_into().unwrap()),
layout: layout.field(fx, field.as_u32().try_into().unwrap()),
};
}
}
ty::Adt(adt_def, substs) if layout.ty.is_simd() => {
let f0_ty = adt_def.non_enum_variant().fields[0].ty(fx.tcx, substs);
match f0_ty.kind() {
ty::Array(_, _) => {
assert_eq!(field.as_u32(), 0);
return CPlace {
inner: CPlaceInner::Var(local, var),
layout: layout.field(fx, field.as_u32().try_into().unwrap()),
};
}
_ => {
return CPlace {
inner: CPlaceInner::VarLane(
local,
var,
field.as_u32().try_into().unwrap(),
),
layout: layout.field(fx, field.as_u32().try_into().unwrap()),
};
}
}
}
_ => {}
},
CPlaceInner::VarPair(local, var1, var2) => {
let layout = layout.field(&*fx, field.index());
@ -629,7 +672,12 @@ impl<'tcx> CPlace<'tcx> {
let (field_ptr, field_layout) = codegen_field(fx, base, extra, layout, field);
if field_layout.is_unsized() {
CPlace::for_ptr_with_extra(field_ptr, extra.unwrap(), field_layout)
if let ty::Foreign(_) = field_layout.ty.kind() {
assert!(extra.is_none());
CPlace::for_ptr(field_ptr, field_layout)
} else {
CPlace::for_ptr_with_extra(field_ptr, extra.unwrap(), field_layout)
}
} else {
CPlace::for_ptr(field_ptr, field_layout)
}