use crate::prelude::*;
-pub fn trans_mono_item<'a, 'tcx: 'a>(
- cx: &mut CodegenCx<'a, 'tcx, CurrentBackend>,
- context: &mut Context,
+struct PrintOnPanic<F: Fn() -> String>(F);
+impl<F: Fn() -> String> Drop for PrintOnPanic<F> {
+ fn drop(&mut self) {
+ if ::std::thread::panicking() {
+ println!("{}", (self.0)());
+ }
+ }
+}
+
+pub fn trans_mono_item<'a, 'clif, 'tcx: 'a, B: Backend + 'static>(
+ cx: &mut crate::CodegenCx<'a, 'clif, 'tcx, B>,
mono_item: MonoItem<'tcx>,
+ linkage: Linkage,
) {
let tcx = cx.tcx;
-
match mono_item {
- MonoItem::Fn(inst) => match inst {
- Instance {
- def: InstanceDef::Item(def_id),
- substs: _,
- } => {
- let mut mir = ::std::io::Cursor::new(Vec::new());
- ::rustc_mir::util::write_mir_pretty(tcx, Some(def_id), &mut mir).unwrap();
- tcx.sess.warn(&format!(
- "{:?}:\n\n{}",
- inst,
- String::from_utf8_lossy(&mir.into_inner())
- ));
-
- let (func_id, mut func) = cx.predefine_function(inst);
-
- let comments = trans_fn(cx, &mut func, inst);
-
- let mut writer = crate::pretty_clif::CommentWriter(comments);
- let mut cton = String::new();
- ::cranelift::codegen::write::decorate_function(&mut writer, &mut cton, &func, None)
- .unwrap();
- tcx.sess.warn(&cton);
-
- let flags = settings::Flags::new(settings::builder());
- match ::cranelift::codegen::verify_function(&func, &flags) {
- Ok(_) => {}
- Err(err) => {
- tcx.sess.err(&format!("{:?}", err));
- let pretty_error =
- ::cranelift::codegen::print_errors::pretty_verifier_error(
- &func,
- None,
- Some(Box::new(writer)),
- &err,
- );
- tcx.sess
- .fatal(&format!("cretonne verify error:\n{}", pretty_error));
+ MonoItem::Fn(inst) => {
+ let _inst_guard =
+ PrintOnPanic(|| format!("{:?} {}", inst, tcx.symbol_name(inst).as_str()));
+ debug_assert!(!inst.substs.needs_infer());
+ let _mir_guard = PrintOnPanic(|| {
+ match inst.def {
+ InstanceDef::Item(_)
+ | InstanceDef::DropGlue(_, _)
+ | InstanceDef::Virtual(_, _)
+ if inst.def_id().krate == LOCAL_CRATE =>
+ {
+ let mut mir = ::std::io::Cursor::new(Vec::new());
+ crate::rustc_mir::util::write_mir_pretty(
+ tcx,
+ Some(inst.def_id()),
+ &mut mir,
+ )
+ .unwrap();
+ String::from_utf8(mir.into_inner()).unwrap()
+ }
+ _ => {
+ // FIXME fix write_mir_pretty for these instances
+ format!("{:#?}", tcx.instance_mir(inst.def))
}
}
+ });
- context.func = func;
- // TODO: cranelift doesn't yet support some of the things needed
- if cx
- .tcx
- .sess
- .crate_types
- .get()
- .contains(&CrateType::Executable)
- {
- cx.module.define_function(func_id, context).unwrap();
- cx.defined_functions.push(func_id);
- }
-
- context.clear();
- }
- Instance {
- def: InstanceDef::DropGlue(_, _),
- substs: _,
- } => unimpl!("Unimplemented drop glue instance"),
- inst => unimpl!("Unimplemented instance {:?}", inst),
- },
+ trans_fn(cx, inst, linkage);
+ }
MonoItem::Static(def_id) => {
- crate::constant::codegen_static(cx, def_id);
+ crate::constant::codegen_static(&mut cx.ccx, def_id);
}
- MonoItem::GlobalAsm(node_id) => cx
- .tcx
+ MonoItem::GlobalAsm(node_id) => tcx
.sess
.fatal(&format!("Unimplemented global asm mono item {:?}", node_id)),
}
}
-pub fn trans_fn<'a, 'tcx: 'a>(
- cx: &mut CodegenCx<'a, 'tcx, CurrentBackend>,
- f: &mut Function,
+fn trans_fn<'a, 'clif, 'tcx: 'a, B: Backend + 'static>(
+ cx: &mut crate::CodegenCx<'a, 'clif, 'tcx, B>,
instance: Instance<'tcx>,
-) -> HashMap<Inst, String> {
- let mir = cx.tcx.optimized_mir(instance.def_id());
+ linkage: Linkage,
+) {
+ let tcx = cx.tcx;
+
+ // Step 1. Get mir
+ let mir = tcx.instance_mir(instance.def);
+
+ // Step 2. Declare function
+ let (name, sig) = get_function_name_and_sig(tcx, instance, false);
+ let func_id = cx.module
+ .declare_function(&name, linkage, &sig)
+ .unwrap();
+ let mut debug_context = cx.debug_context.as_mut().map(|debug_context| FunctionDebugContext::new(
+ tcx,
+ debug_context,
+ mir,
+ &name,
+ &sig,
+ ));
+
+ // Step 3. Make FunctionBuilder
+ let mut func = Function::with_name_signature(ExternalName::user(0, 0), sig);
let mut func_ctx = FunctionBuilderContext::new();
- let mut bcx: FunctionBuilder<Variable> = FunctionBuilder::new(f, &mut func_ctx);
+ let mut bcx = FunctionBuilder::new(&mut func, &mut func_ctx);
+ // Step 4. Predefine ebb's
let start_ebb = bcx.create_ebb();
- bcx.switch_to_block(start_ebb);
let mut ebb_map: HashMap<BasicBlock, Ebb> = HashMap::new();
for (bb, _bb_data) in mir.basic_blocks().iter_enumerated() {
ebb_map.insert(bb, bcx.create_ebb());
}
+ // Step 5. Make FunctionCx
+ let pointer_type = cx.module.target_config().pointer_type();
+ let clif_comments = crate::pretty_clif::CommentWriter::new(tcx, instance);
+
let mut fx = FunctionCx {
- tcx: cx.tcx,
- module: &mut cx.module,
+ tcx,
+ module: cx.module,
+ pointer_type,
+
instance,
mir,
+
bcx,
- param_substs: {
- assert!(!instance.substs.needs_infer());
- instance.substs
- },
ebb_map,
local_map: HashMap::new(),
- comments: HashMap::new(),
- constants: &mut cx.constants,
+
+ clif_comments,
+ constants: &mut cx.ccx,
+ caches: &mut cx.caches,
+ source_info_set: indexmap::IndexSet::new(),
};
- let fx = &mut fx;
- crate::abi::codegen_fn_prelude(fx, start_ebb);
+ // Step 6. Codegen function
+ with_unimpl_span(fx.mir.span, || {
+ crate::abi::codegen_fn_prelude(&mut fx, start_ebb);
+ codegen_fn_content(&mut fx);
+ });
+ let source_info_set = fx.source_info_set.clone();
+
+ // Step 7. Write function to file for debugging
+ #[cfg(debug_assertions)]
+ fx.write_clif_file();
+
+ // Step 8. Verify function
+ verify_func(tcx, fx.clif_comments, &func);
+
+ // Step 9. Define function
+ cx.caches.context.func = func;
+ cx.module
+ .define_function_peek_compiled(func_id, &mut cx.caches.context, |size, context, isa| {
+ debug_context.as_mut().map(|x| x.define(tcx, size, context, isa, &source_info_set));
+ })
+ .unwrap();
+ //let module = &mut cx.module;
+ //let caches = &cx.caches;
+ cx.caches.context.clear();
+}
- fx.bcx
- .ins()
- .jump(*fx.ebb_map.get(&START_BLOCK).unwrap(), &[]);
+fn verify_func(tcx: TyCtxt, writer: crate::pretty_clif::CommentWriter, func: &Function) {
+ let flags = settings::Flags::new(settings::builder());
+ match ::cranelift::codegen::verify_function(&func, &flags) {
+ Ok(_) => {}
+ Err(err) => {
+ tcx.sess.err(&format!("{:?}", err));
+ let pretty_error = ::cranelift::codegen::print_errors::pretty_verifier_error(
+ &func,
+ None,
+ Some(Box::new(&writer)),
+ err,
+ );
+ tcx.sess
+ .fatal(&format!("cranelift verify error:\n{}", pretty_error));
+ }
+ }
+}
+
+fn codegen_fn_content<'a, 'tcx: 'a>(fx: &mut FunctionCx<'a, 'tcx, impl Backend>) {
+ for (bb, bb_data) in fx.mir.basic_blocks().iter_enumerated() {
+ if bb_data.is_cleanup {
+ // Unwinding after panicking is not supported
+ continue;
+ }
- for (bb, bb_data) in mir.basic_blocks().iter_enumerated() {
let ebb = fx.get_ebb(bb);
fx.bcx.switch_to_block(ebb);
fx.bcx.ins().nop();
for stmt in &bb_data.statements {
+ fx.set_debug_loc(stmt.source_info);
trans_stmt(fx, ebb, stmt);
}
- let mut terminator_head = "\n".to_string();
- bb_data
- .terminator()
- .kind
- .fmt_head(&mut terminator_head)
- .unwrap();
- let inst = fx.bcx.func.layout.last_inst(ebb).unwrap();
- fx.add_comment(inst, terminator_head);
+ #[cfg(debug_assertions)]
+ {
+ let mut terminator_head = "\n".to_string();
+ bb_data
+ .terminator()
+ .kind
+ .fmt_head(&mut terminator_head)
+ .unwrap();
+ let inst = fx.bcx.func.layout.last_inst(ebb).unwrap();
+ fx.add_comment(inst, terminator_head);
+ }
+
+ fx.set_debug_loc(bb_data.terminator().source_info);
match &bb_data.terminator().kind {
TerminatorKind::Goto { target } => {
target,
cleanup: _,
} => {
- let cond = trans_operand(fx, cond).load_value(fx);
+ let cond = trans_operand(fx, cond).load_scalar(fx);
// TODO HACK brz/brnz for i8/i16 is not yet implemented
let cond = fx.bcx.ins().uextend(types::I32, cond);
let target = fx.get_ebb(*target);
} else {
fx.bcx.ins().brz(cond, target, &[]);
};
- fx.bcx.ins().trap(TrapCode::User(!0));
+ trap_panic(&mut fx.bcx);
}
TerminatorKind::SwitchInt {
values,
targets,
} => {
- fx.bcx.ins().trap(TrapCode::User(0));
- // TODO: prevent panics on large and negative disciminants
- if false {
- let discr = trans_operand(fx, discr).load_value(fx);
- let mut jt_data = JumpTableData::new();
- for (i, value) in values.iter().enumerate() {
- let ebb = fx.get_ebb(targets[i]);
- jt_data.set_entry(*value as usize, ebb);
- }
- let jump_table = fx.bcx.create_jump_table(jt_data);
- fx.bcx.ins().br_table(discr, jump_table);
- let otherwise_ebb = fx.get_ebb(targets[targets.len() - 1]);
- fx.bcx.ins().jump(otherwise_ebb, &[]);
+ let discr = trans_operand(fx, discr).load_scalar(fx);
+ let mut switch = ::cranelift::frontend::Switch::new();
+ for (i, value) in values.iter().enumerate() {
+ let ebb = fx.get_ebb(targets[i]);
+ switch.set_entry(*value as u64, ebb);
}
+ let otherwise_ebb = fx.get_ebb(targets[targets.len() - 1]);
+ switch.emit(&mut fx.bcx, discr, otherwise_ebb);
}
TerminatorKind::Call {
func,
args,
destination,
cleanup: _,
+ from_hir_call: _,
} => {
- crate::abi::codegen_call(fx, func, args, destination);
+ crate::abi::codegen_terminator_call(fx, func, args, destination);
}
TerminatorKind::Resume | TerminatorKind::Abort | TerminatorKind::Unreachable => {
- fx.bcx.ins().trap(TrapCode::User(!0));
+ trap_unreachable(&mut fx.bcx);
}
TerminatorKind::Yield { .. }
| TerminatorKind::FalseEdges { .. }
- | TerminatorKind::FalseUnwind { .. } => {
+ | TerminatorKind::FalseUnwind { .. }
+ | TerminatorKind::DropAndReplace { .. }
+ | TerminatorKind::GeneratorDrop => {
bug!("shouldn't exist at trans {:?}", bb_data.terminator());
}
- TerminatorKind::Drop { target, .. } | TerminatorKind::DropAndReplace { target, .. } => {
- // TODO call drop impl
- // unimplemented!("terminator {:?}", bb_data.terminator());
+ TerminatorKind::Drop {
+ location,
+ target,
+ unwind: _,
+ } => {
+ let ty = location.ty(fx.mir, fx.tcx).to_ty(fx.tcx);
+ let ty = fx.monomorphize(&ty);
+ let drop_fn = crate::rustc_mir::monomorphize::resolve_drop_in_place(fx.tcx, ty);
+
+ if let ty::InstanceDef::DropGlue(_, None) = drop_fn.def {
+ // we don't actually need to drop anything
+ } else {
+ let drop_place = trans_place(fx, location);
+ let drop_fn_ty = drop_fn.ty(fx.tcx);
+ match ty.sty {
+ ty::Dynamic(..) => {
+ crate::abi::codegen_drop(fx, drop_place, drop_fn_ty);
+ }
+ _ => {
+ let arg_place = CPlace::new_stack_slot(
+ fx,
+ fx.tcx.mk_ref(
+ &ty::RegionKind::ReErased,
+ TypeAndMut {
+ ty,
+ mutbl: crate::rustc::hir::Mutability::MutMutable,
+ },
+ ),
+ );
+ drop_place.write_place_ref(fx, arg_place);
+ let arg_value = arg_place.to_cvalue(fx);
+ crate::abi::codegen_call_inner(
+ fx,
+ None,
+ drop_fn_ty,
+ vec![arg_value],
+ None,
+ );
+ }
+ }
+ }
+
let target_ebb = fx.get_ebb(*target);
fx.bcx.ins().jump(target_ebb, &[]);
}
- TerminatorKind::GeneratorDrop => {
- unimplemented!("terminator GeneratorDrop");
- }
};
}
fx.bcx.seal_all_blocks();
fx.bcx.finalize();
-
- fx.comments.clone()
}
-fn trans_stmt<'a, 'tcx: 'a>(fx: &mut FunctionCx<'a, 'tcx>, cur_ebb: Ebb, stmt: &Statement<'tcx>) {
- fx.tcx.sess.warn(&format!("stmt {:?}", stmt));
+fn trans_stmt<'a, 'tcx: 'a>(
+ fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
+ cur_ebb: Ebb,
+ stmt: &Statement<'tcx>,
+) {
+ let _print_guard = PrintOnPanic(|| format!("stmt {:?}", stmt));
- let inst = fx.bcx.func.layout.last_inst(cur_ebb).unwrap();
- fx.add_comment(inst, format!("{:?}", stmt));
+ fx.set_debug_loc(stmt.source_info);
+
+ #[cfg(debug_assertions)]
+ match &stmt.kind {
+ StatementKind::StorageLive(..) | StatementKind::StorageDead(..) => {} // Those are not very useful
+ _ => {
+ let inst = fx.bcx.func.layout.last_inst(cur_ebb).unwrap();
+ fx.add_comment(inst, format!("{:?}", stmt));
+ }
+ }
match &stmt.kind {
StatementKind::SetDiscriminant {
if *variant_index != dataful_variant {
let niche = place.place_field(fx, mir::Field::new(0));
//let niche_llty = niche.layout.immediate_llvm_type(bx.cx);
- let niche_value = ((variant_index - *niche_variants.start()) as u128)
- .wrapping_add(niche_start);
+ let niche_value =
+ ((variant_index.as_u32() - niche_variants.start().as_u32()) as u128)
+ .wrapping_add(niche_start);
// FIXME(eddyb) Check the actual primitive type here.
let niche_llval = if niche_value == 0 {
CValue::const_val(fx, niche.layout().ty, 0)
StatementKind::Assign(to_place, rval) => {
let lval = trans_place(fx, to_place);
let dest_layout = lval.layout();
- match rval {
+ match &**rval {
Rvalue::Use(operand) => {
let val = trans_operand(fx, operand);
lval.write_cvalue(fx, val);
}
Rvalue::Ref(_, _, place) => {
let place = trans_place(fx, place);
- let addr = place.expect_addr();
- lval.write_cvalue(fx, CValue::ByVal(addr, dest_layout));
+ place.write_place_ref(fx, lval);
}
Rvalue::BinaryOp(bin_op, lhs, rhs) => {
- let ty = fx.monomorphize(&lhs.ty(&fx.mir.local_decls, fx.tcx));
+ let ty = fx.monomorphize(&lhs.ty(fx.mir, fx.tcx));
let lhs = trans_operand(fx, lhs);
let rhs = trans_operand(fx, rhs);
let res = match ty.sty {
- TypeVariants::TyBool => {
- trans_bool_binop(fx, *bin_op, lhs, rhs, lval.layout().ty)
- }
- TypeVariants::TyUint(_) => {
+ ty::Bool => trans_bool_binop(fx, *bin_op, lhs, rhs, lval.layout().ty),
+ ty::Uint(_) => {
trans_int_binop(fx, *bin_op, lhs, rhs, lval.layout().ty, false)
}
- TypeVariants::TyInt(_) => {
+ ty::Int(_) => {
trans_int_binop(fx, *bin_op, lhs, rhs, lval.layout().ty, true)
}
- TypeVariants::TyFloat(_) => {
- trans_float_binop(fx, *bin_op, lhs, rhs, lval.layout().ty)
- }
- TypeVariants::TyChar => {
- trans_char_binop(fx, *bin_op, lhs, rhs, lval.layout().ty)
- }
- TypeVariants::TyRawPtr(..) => {
- trans_ptr_binop(fx, *bin_op, lhs, rhs, lval.layout().ty)
- }
+ ty::Float(_) => trans_float_binop(fx, *bin_op, lhs, rhs, lval.layout().ty),
+ ty::Char => trans_char_binop(fx, *bin_op, lhs, rhs, lval.layout().ty),
+ ty::RawPtr(..) => trans_ptr_binop(fx, *bin_op, lhs, rhs, lval.layout().ty),
+ ty::FnPtr(..) => trans_ptr_binop(fx, *bin_op, lhs, rhs, lval.layout().ty),
_ => unimplemented!("binop {:?} for {:?}", bin_op, ty),
};
lval.write_cvalue(fx, res);
}
Rvalue::CheckedBinaryOp(bin_op, lhs, rhs) => {
- let ty = fx.monomorphize(&lhs.ty(&fx.mir.local_decls, fx.tcx));
+ let ty = fx.monomorphize(&lhs.ty(fx.mir, fx.tcx));
let lhs = trans_operand(fx, lhs);
let rhs = trans_operand(fx, rhs);
let res = match ty.sty {
- TypeVariants::TyUint(_) => {
+ ty::Uint(_) => {
trans_checked_int_binop(fx, *bin_op, lhs, rhs, lval.layout().ty, false)
}
- TypeVariants::TyInt(_) => {
+ ty::Int(_) => {
trans_checked_int_binop(fx, *bin_op, lhs, rhs, lval.layout().ty, true)
}
_ => unimplemented!("checked binop {:?} for {:?}", bin_op, ty),
lval.write_cvalue(fx, res);
}
Rvalue::UnaryOp(un_op, operand) => {
- let ty = fx.monomorphize(&operand.ty(&fx.mir.local_decls, fx.tcx));
- let layout = fx.layout_of(ty);
- let val = trans_operand(fx, operand).load_value(fx);
+ let operand = trans_operand(fx, operand);
+ let layout = operand.layout();
+ let val = operand.load_scalar(fx);
let res = match un_op {
- UnOp::Not => fx.bcx.ins().bnot(val),
- UnOp::Neg => match ty.sty {
- TypeVariants::TyInt(_) => {
- let clif_ty = fx.cton_type(ty).unwrap();
+ UnOp::Not => {
+ match layout.ty.sty {
+ ty::Bool => {
+ let val = fx.bcx.ins().uextend(types::I32, val); // WORKAROUND for CraneStation/cranelift#466
+ let res = fx.bcx.ins().icmp_imm(IntCC::Equal, val, 0);
+ fx.bcx.ins().bint(types::I8, res)
+ }
+ ty::Uint(_) | ty::Int(_) => fx.bcx.ins().bnot(val),
+ _ => unimplemented!("un op Not for {:?}", layout.ty),
+ }
+ }
+ UnOp::Neg => match layout.ty.sty {
+ ty::Int(_) => {
+ let clif_ty = fx.clif_type(layout.ty).unwrap();
let zero = fx.bcx.ins().iconst(clif_ty, 0);
fx.bcx.ins().isub(zero, val)
}
- TypeVariants::TyFloat(_) => fx.bcx.ins().fneg(val),
- _ => unimplemented!("un op Neg for {:?}", ty),
+ ty::Float(_) => fx.bcx.ins().fneg(val),
+ _ => unimplemented!("un op Neg for {:?}", layout.ty),
},
};
lval.write_cvalue(fx, CValue::ByVal(res, layout));
}
Rvalue::Cast(CastKind::ReifyFnPointer, operand, ty) => {
- let operand = trans_operand(fx, operand);
let layout = fx.layout_of(ty);
- lval.write_cvalue(fx, operand.unchecked_cast_to(layout));
+ match fx.monomorphize(&operand.ty(&fx.mir.local_decls, fx.tcx)).sty {
+ ty::FnDef(def_id, substs) => {
+ let func_ref = fx.get_function_ref(
+ Instance::resolve(fx.tcx, ParamEnv::reveal_all(), def_id, substs).unwrap(),
+ );
+ let func_addr = fx.bcx.ins().func_addr(fx.pointer_type, func_ref);
+ lval.write_cvalue(fx, CValue::ByVal(func_addr, layout));
+ }
+ _ => bug!("Trying to ReifyFnPointer on non FnDef {:?}", ty),
+ }
}
Rvalue::Cast(CastKind::UnsafeFnPointer, operand, ty) => {
let operand = trans_operand(fx, operand);
let operand = trans_operand(fx, operand);
let from_ty = operand.layout().ty;
match (&from_ty.sty, &to_ty.sty) {
- (TypeVariants::TyRef(..), TypeVariants::TyRef(..))
- | (TypeVariants::TyRef(..), TypeVariants::TyRawPtr(..))
- | (TypeVariants::TyRawPtr(..), TypeVariants::TyRef(..))
- | (TypeVariants::TyRawPtr(..), TypeVariants::TyRawPtr(..)) => {
+ (ty::Ref(..), ty::Ref(..))
+ | (ty::Ref(..), ty::RawPtr(..))
+ | (ty::RawPtr(..), ty::Ref(..))
+ | (ty::RawPtr(..), ty::RawPtr(..))
+ | (ty::FnPtr(..), ty::RawPtr(..)) => {
lval.write_cvalue(fx, operand.unchecked_cast_to(dest_layout));
}
- (TypeVariants::TyRawPtr(..), TypeVariants::TyUint(_))
- | (TypeVariants::TyFnPtr(..), TypeVariants::TyUint(_))
- if to_ty.sty == fx.tcx.types.usize.sty =>
+ (ty::RawPtr(..), ty::Uint(_))
+ | (ty::RawPtr(..), ty::Int(_))
+ | (ty::FnPtr(..), ty::Uint(_))
+ if to_ty.sty == fx.tcx.types.usize.sty
+ || to_ty.sty == fx.tcx.types.isize.sty
+ || fx.clif_type(to_ty).unwrap() == pointer_ty(fx.tcx) =>
{
lval.write_cvalue(fx, operand.unchecked_cast_to(dest_layout));
}
- (TypeVariants::TyUint(_), TypeVariants::TyRawPtr(..))
- if from_ty.sty == fx.tcx.types.usize.sty =>
- {
+ (ty::Uint(_), ty::RawPtr(..)) if from_ty.sty == fx.tcx.types.usize.sty => {
+ lval.write_cvalue(fx, operand.unchecked_cast_to(dest_layout));
+ }
+ (ty::Int(_), ty::RawPtr(..)) if from_ty.sty == fx.tcx.types.isize.sty => {
lval.write_cvalue(fx, operand.unchecked_cast_to(dest_layout));
}
- (TypeVariants::TyChar, TypeVariants::TyUint(_))
- | (TypeVariants::TyUint(_), TypeVariants::TyChar)
- | (TypeVariants::TyUint(_), TypeVariants::TyInt(_))
- | (TypeVariants::TyUint(_), TypeVariants::TyUint(_)) => {
- let from = operand.load_value(fx);
- let res = crate::common::cton_intcast(fx, from, from_ty, to_ty, false);
+ (ty::Char, ty::Uint(_))
+ | (ty::Uint(_), ty::Char)
+ | (ty::Uint(_), ty::Int(_))
+ | (ty::Uint(_), ty::Uint(_)) => {
+ let from = operand.load_scalar(fx);
+ let res = crate::common::clif_intcast(
+ fx,
+ from,
+ fx.clif_type(to_ty).unwrap(),
+ false,
+ );
lval.write_cvalue(fx, CValue::ByVal(res, dest_layout));
}
- (TypeVariants::TyInt(_), TypeVariants::TyInt(_))
- | (TypeVariants::TyInt(_), TypeVariants::TyUint(_)) => {
- let from = operand.load_value(fx);
- let res = crate::common::cton_intcast(fx, from, from_ty, to_ty, true);
+ (ty::Int(_), ty::Int(_)) | (ty::Int(_), ty::Uint(_)) => {
+ let from = operand.load_scalar(fx);
+ let res = crate::common::clif_intcast(
+ fx,
+ from,
+ fx.clif_type(to_ty).unwrap(),
+ true,
+ );
lval.write_cvalue(fx, CValue::ByVal(res, dest_layout));
}
- (TypeVariants::TyFloat(from_flt), TypeVariants::TyFloat(to_flt)) => {
- let from = operand.load_value(fx);
+ (ty::Float(from_flt), ty::Float(to_flt)) => {
+ let from = operand.load_scalar(fx);
let res = match (from_flt, to_flt) {
(FloatTy::F32, FloatTy::F64) => {
fx.bcx.ins().fpromote(types::F64, from)
};
lval.write_cvalue(fx, CValue::ByVal(res, dest_layout));
}
- (TypeVariants::TyInt(_), TypeVariants::TyFloat(_)) => {
- let from = operand.load_value(fx);
- let f_type = fx.cton_type(to_ty).unwrap();
+ (ty::Float(_), ty::Int(_)) => {
+ let from = operand.load_scalar(fx);
+ let i_type = fx.clif_type(to_ty).unwrap();
+ let res = fx.bcx.ins().fcvt_to_sint_sat(i_type, from);
+ lval.write_cvalue(fx, CValue::ByVal(res, dest_layout));
+ }
+ (ty::Float(_), ty::Uint(_)) => {
+ let from = operand.load_scalar(fx);
+ let i_type = fx.clif_type(to_ty).unwrap();
+ let res = fx.bcx.ins().fcvt_to_uint_sat(i_type, from);
+ lval.write_cvalue(fx, CValue::ByVal(res, dest_layout));
+ }
+ (ty::Int(_), ty::Float(_)) => {
+ let from_ty = fx.clif_type(from_ty).unwrap();
+ let from = operand.load_scalar(fx);
+ // FIXME missing encoding for fcvt_from_sint.f32.i8
+ let from = if from_ty == types::I8 || from_ty == types::I16 {
+ fx.bcx.ins().sextend(types::I32, from)
+ } else {
+ from
+ };
+ let f_type = fx.clif_type(to_ty).unwrap();
let res = fx.bcx.ins().fcvt_from_sint(f_type, from);
lval.write_cvalue(fx, CValue::ByVal(res, dest_layout));
}
- (TypeVariants::TyUint(_), TypeVariants::TyFloat(_)) => {
- let from = operand.load_value(fx);
- let f_type = fx.cton_type(to_ty).unwrap();
+ (ty::Uint(_), ty::Float(_)) => {
+ let from_ty = fx.clif_type(from_ty).unwrap();
+ let from = operand.load_scalar(fx);
+ // FIXME missing encoding for fcvt_from_uint.f32.i8
+ let from = if from_ty == types::I8 || from_ty == types::I16 {
+ fx.bcx.ins().uextend(types::I32, from)
+ } else {
+ from
+ };
+ let f_type = fx.clif_type(to_ty).unwrap();
let res = fx.bcx.ins().fcvt_from_uint(f_type, from);
lval.write_cvalue(fx, CValue::ByVal(res, dest_layout));
}
- (TypeVariants::TyBool, TypeVariants::TyUint(_))
- | (TypeVariants::TyBool, TypeVariants::TyInt(_)) => {
- let to_ty = fx.cton_type(to_ty).unwrap();
- let from = operand.load_value(fx);
+ (ty::Bool, ty::Uint(_)) | (ty::Bool, ty::Int(_)) => {
+ let to_ty = fx.clif_type(to_ty).unwrap();
+ let from = operand.load_scalar(fx);
let res = if to_ty != types::I8 {
fx.bcx.ins().uextend(to_ty, from)
} else {
};
lval.write_cvalue(fx, CValue::ByVal(res, dest_layout));
}
+ (ty::Adt(adt_def, _substs), ty::Uint(_)) | (ty::Adt(adt_def, _substs), ty::Int(_)) if adt_def.is_enum() => {
+ let discr = trans_get_discriminant(fx, operand, fx.layout_of(to_ty));
+ lval.write_cvalue(fx, discr);
+ }
_ => unimpl!("rval misc {:?} {:?}", from_ty, to_ty),
}
}
Rvalue::Cast(CastKind::ClosureFnPointer, operand, ty) => {
unimplemented!("rval closure_fn_ptr {:?} {:?}", operand, ty)
}
- Rvalue::Cast(CastKind::Unsize, operand, ty) => {
- unimpl!("rval unsize {:?} {:?}", operand, ty);
+ Rvalue::Cast(CastKind::Unsize, operand, _ty) => {
+ let operand = trans_operand(fx, operand);
+ operand.unsize_value(fx, lval);
}
Rvalue::Discriminant(place) => {
let place = trans_place(fx, place).to_cvalue(fx);
Rvalue::Repeat(operand, times) => {
let operand = trans_operand(fx, operand);
for i in 0..*times {
- let index = fx.bcx.ins().iconst(types::I64, i as i64);
+ let index = fx.bcx.ins().iconst(fx.pointer_type, i as i64);
let to = lval.place_index(fx, index);
to.write_cvalue(fx, operand);
}
}
- Rvalue::Len(lval) => unimpl!("rval len {:?}", lval),
- Rvalue::NullaryOp(NullOp::Box, ty) => unimplemented!("rval box {:?}", ty),
+ Rvalue::Len(place) => {
+ let place = trans_place(fx, place);
+ let usize_layout = fx.layout_of(fx.tcx.types.usize);
+ let len = codegen_array_len(fx, place);
+ lval.write_cvalue(fx, CValue::ByVal(len, usize_layout));
+ }
+ Rvalue::NullaryOp(NullOp::Box, content_ty) => {
+ use rustc::middle::lang_items::ExchangeMallocFnLangItem;
+
+ let usize_type = fx.clif_type(fx.tcx.types.usize).unwrap();
+ let layout = fx.layout_of(content_ty);
+ let llsize = fx.bcx.ins().iconst(usize_type, layout.size.bytes() as i64);
+ let llalign = fx
+ .bcx
+ .ins()
+ .iconst(usize_type, layout.align.abi.bytes() as i64);
+ let box_layout = fx.layout_of(fx.tcx.mk_box(content_ty));
+
+ // Allocate space:
+ let def_id = match fx.tcx.lang_items().require(ExchangeMallocFnLangItem) {
+ Ok(id) => id,
+ Err(s) => {
+ fx.tcx
+ .sess
+ .fatal(&format!("allocation of `{}` {}", box_layout.ty, s));
+ }
+ };
+ let instance = ty::Instance::mono(fx.tcx, def_id);
+ let func_ref = fx.get_function_ref(instance);
+ let call = fx.bcx.ins().call(func_ref, &[llsize, llalign]);
+ let ptr = fx.bcx.inst_results(call)[0];
+ lval.write_cvalue(fx, CValue::ByVal(ptr, box_layout));
+ }
Rvalue::NullaryOp(NullOp::SizeOf, ty) => {
- assert!(
- lval.layout()
- .ty
- .is_sized(fx.tcx.at(DUMMY_SP), ParamEnv::reveal_all())
- );
+ assert!(lval
+ .layout()
+ .ty
+ .is_sized(fx.tcx.at(DUMMY_SP), ParamEnv::reveal_all()));
let ty_size = fx.layout_of(ty).size.bytes();
let val = CValue::const_val(fx, fx.tcx.types.usize, ty_size as i64);
lval.write_cvalue(fx, val);
AggregateKind::Array(_ty) => {
for (i, operand) in operands.into_iter().enumerate() {
let operand = trans_operand(fx, operand);
- let index = fx.bcx.ins().iconst(types::I64, i as i64);
+ let index = fx.bcx.ins().iconst(fx.pointer_type, i as i64);
let to = lval.place_index(fx, index);
to.write_cvalue(fx, operand);
}
StatementKind::StorageLive(_)
| StatementKind::StorageDead(_)
| StatementKind::Nop
- | StatementKind::ReadForMatch(_)
- | StatementKind::Validate(_, _)
- | StatementKind::EndRegion(_)
- | StatementKind::UserAssertTy(_, _) => {}
+ | StatementKind::FakeRead(..)
+ | StatementKind::Retag { .. }
+ | StatementKind::AscribeUserType(..) => {}
StatementKind::InlineAsm { .. } => unimpl!("Inline assembly is not supported"),
}
}
+fn codegen_array_len<'a, 'tcx: 'a>(
+ fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
+ place: CPlace<'tcx>,
+) -> Value {
+ match place.layout().ty.sty {
+ ty::Array(_elem_ty, len) => {
+ let len = crate::constant::force_eval_const(fx, len).unwrap_usize(fx.tcx) as i64;
+ fx.bcx.ins().iconst(fx.pointer_type, len)
+ }
+ ty::Slice(_elem_ty) => {
+ place.to_addr_maybe_unsized(fx).1.expect("Length metadata for slice place")
+ }
+ _ => bug!("Rvalue::Len({:?})", place),
+ }
+}
+
pub fn trans_get_discriminant<'a, 'tcx: 'a>(
- fx: &mut FunctionCx<'a, 'tcx>,
+ fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
value: CValue<'tcx>,
dest_layout: TyLayout<'tcx>,
) -> CValue<'tcx> {
let layout = value.layout();
if layout.abi == layout::Abi::Uninhabited {
- fx.bcx.ins().trap(TrapCode::User(!0));
+ trap_unreachable(&mut fx.bcx);
}
match layout.variants {
layout::Variants::Single { index } => {
- let discr_val = layout.ty.ty_adt_def().map_or(index as u128, |def| {
- def.discriminant_for_variant(fx.tcx, index).val
- });
+ let discr_val = layout
+ .ty
+ .ty_adt_def()
+ .map_or(index.as_u32() as u128, |def| {
+ def.discriminant_for_variant(fx.tcx, index).val
+ });
return CValue::const_val(fx, dest_layout.ty, discr_val as u64 as i64);
}
layout::Variants::Tagged { .. } | layout::Variants::NicheFilling { .. } => {}
let discr = value.value_field(fx, mir::Field::new(0));
let discr_ty = discr.layout().ty;
- let lldiscr = discr.load_value(fx);
+ let lldiscr = discr.load_scalar(fx);
match layout.variants {
layout::Variants::Single { .. } => bug!(),
layout::Variants::Tagged { ref tag, .. } => {
layout::Int(_, signed) => signed,
_ => false,
};
- let val = cton_intcast(fx, lldiscr, discr_ty, dest_layout.ty, signed);
+ let val = clif_intcast(fx, lldiscr, fx.clif_type(dest_layout.ty).unwrap(), signed);
return CValue::ByVal(val, dest_layout);
}
layout::Variants::NicheFilling {
niche_start,
..
} => {
- let niche_llty = fx.cton_type(discr_ty).unwrap();
- let dest_cton_ty = fx.cton_type(dest_layout.ty).unwrap();
+ let niche_llty = fx.clif_type(discr_ty).unwrap();
+ let dest_clif_ty = fx.clif_type(dest_layout.ty).unwrap();
if niche_variants.start() == niche_variants.end() {
let b = fx
.bcx
let if_true = fx
.bcx
.ins()
- .iconst(dest_cton_ty, *niche_variants.start() as u64 as i64);
+ .iconst(dest_clif_ty, niche_variants.start().as_u32() as i64);
let if_false = fx
.bcx
.ins()
- .iconst(dest_cton_ty, dataful_variant as u64 as i64);
+ .iconst(dest_clif_ty, dataful_variant.as_u32() as i64);
let val = fx.bcx.ins().select(b, if_true, if_false);
return CValue::ByVal(val, dest_layout);
} else {
// Rebase from niche values to discriminant values.
- let delta = niche_start.wrapping_sub(*niche_variants.start() as u128);
+ let delta = niche_start.wrapping_sub(niche_variants.start().as_u32() as u128);
let delta = fx.bcx.ins().iconst(niche_llty, delta as u64 as i64);
let lldiscr = fx.bcx.ins().isub(lldiscr, delta);
let b = fx.bcx.ins().icmp_imm(
IntCC::UnsignedLessThanOrEqual,
lldiscr,
- *niche_variants.end() as u64 as i64,
+ niche_variants.end().as_u32() as i64,
);
- let if_true = cton_intcast(fx, lldiscr, discr_ty, dest_layout.ty, false);
+ let if_true =
+ clif_intcast(fx, lldiscr, fx.clif_type(dest_layout.ty).unwrap(), false);
let if_false = fx
.bcx
.ins()
- .iconst(dest_cton_ty, dataful_variant as u64 as i64);
+ .iconst(dest_clif_ty, dataful_variant.as_u32() as i64);
let val = fx.bcx.ins().select(b, if_true, if_false);
return CValue::ByVal(val, dest_layout);
}
}
macro_rules! binop_match {
- (@single $fx:expr, $bug_fmt:expr, $var:expr, $lhs:expr, $rhs:expr, $ret_ty:expr, bug) => {
+ (@single $fx:expr, $bug_fmt:expr, $var:expr, $signed:expr, $lhs:expr, $rhs:expr, $ret_ty:expr, bug) => {
bug!("binop {} on {} lhs: {:?} rhs: {:?}", stringify!($var), $bug_fmt, $lhs, $rhs)
};
- (@single $fx:expr, $bug_fmt:expr, $var:expr, $lhs:expr, $rhs:expr, $ret_ty:expr, icmp($cc:ident)) => {{
+ (@single $fx:expr, $bug_fmt:expr, $var:expr, $signed:expr, $lhs:expr, $rhs:expr, $ret_ty:expr, icmp($cc:ident)) => {{
assert_eq!($fx.tcx.types.bool, $ret_ty);
let ret_layout = $fx.layout_of($ret_ty);
+
let b = $fx.bcx.ins().icmp(IntCC::$cc, $lhs, $rhs);
CValue::ByVal($fx.bcx.ins().bint(types::I8, b), ret_layout)
}};
- (@single $fx:expr, $bug_fmt:expr, $var:expr, $lhs:expr, $rhs:expr, $ret_ty:expr, fcmp($cc:ident)) => {{
+ (@single $fx:expr, $bug_fmt:expr, $var:expr, $signed:expr, $lhs:expr, $rhs:expr, $ret_ty:expr, fcmp($cc:ident)) => {{
assert_eq!($fx.tcx.types.bool, $ret_ty);
let ret_layout = $fx.layout_of($ret_ty);
let b = $fx.bcx.ins().fcmp(FloatCC::$cc, $lhs, $rhs);
CValue::ByVal($fx.bcx.ins().bint(types::I8, b), ret_layout)
}};
- (@single $fx:expr, $bug_fmt:expr, $var:expr, $lhs:expr, $rhs:expr, $ret_ty:expr, custom(|| $body:expr)) => {{
+ (@single $fx:expr, $bug_fmt:expr, $var:expr, $signed:expr, $lhs:expr, $rhs:expr, $ret_ty:expr, custom(|| $body:expr)) => {{
$body
}};
- (@single $fx:expr, $bug_fmt:expr, $var:expr, $lhs:expr, $rhs:expr, $ret_ty:expr, $name:ident) => {{
+ (@single $fx:expr, $bug_fmt:expr, $var:expr, $signed:expr, $lhs:expr, $rhs:expr, $ret_ty:expr, $name:ident) => {{
let ret_layout = $fx.layout_of($ret_ty);
CValue::ByVal($fx.bcx.ins().$name($lhs, $rhs), ret_layout)
}};
$var:ident ($sign:pat) $name:tt $( ( $($next:tt)* ) )? ;
)*
) => {{
- let lhs = $lhs.load_value($fx);
- let rhs = $rhs.load_value($fx);
+ let lhs = $lhs.load_scalar($fx);
+ let rhs = $rhs.load_scalar($fx);
match ($bin_op, $signed) {
$(
- (BinOp::$var, $sign) => binop_match!(@single $fx, $bug_fmt, $var, lhs, rhs, $ret_ty, $name $( ( $($next)* ) )?),
+ (BinOp::$var, $sign) => binop_match!(@single $fx, $bug_fmt, $var, $signed, lhs, rhs, $ret_ty, $name $( ( $($next)* ) )?),
)*
}
}}
}
fn trans_bool_binop<'a, 'tcx: 'a>(
- fx: &mut FunctionCx<'a, 'tcx>,
+ fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
bin_op: BinOp,
lhs: CValue<'tcx>,
rhs: CValue<'tcx>,
}
pub fn trans_int_binop<'a, 'tcx: 'a>(
- fx: &mut FunctionCx<'a, 'tcx>,
+ fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
bin_op: BinOp,
lhs: CValue<'tcx>,
rhs: CValue<'tcx>,
}
pub fn trans_checked_int_binop<'a, 'tcx: 'a>(
- fx: &mut FunctionCx<'a, 'tcx>,
+ fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
bin_op: BinOp,
- lhs: CValue<'tcx>,
- rhs: CValue<'tcx>,
+ in_lhs: CValue<'tcx>,
+ in_rhs: CValue<'tcx>,
out_ty: Ty<'tcx>,
signed: bool,
) -> CValue<'tcx> {
if bin_op != BinOp::Shl && bin_op != BinOp::Shr {
assert_eq!(
- lhs.layout().ty,
- rhs.layout().ty,
+ in_lhs.layout().ty,
+ in_rhs.layout().ty,
"checked int binop requires lhs and rhs of same type"
);
}
- let res_ty = match out_ty.sty {
- TypeVariants::TyTuple(tys) => tys[0],
+
+ let lhs = in_lhs.load_scalar(fx);
+ let rhs = in_rhs.load_scalar(fx);
+ let res = match bin_op {
+ BinOp::Add => fx.bcx.ins().iadd(lhs, rhs),
+ BinOp::Sub => fx.bcx.ins().isub(lhs, rhs),
+ BinOp::Mul => fx.bcx.ins().imul(lhs, rhs),
+ BinOp::Shl => fx.bcx.ins().ishl(lhs, rhs),
+ BinOp::Shr => {
+ if !signed {
+ fx.bcx.ins().ushr(lhs, rhs)
+ } else {
+ fx.bcx.ins().sshr(lhs, rhs)
+ }
+ }
_ => bug!(
- "Checked int binop requires tuple as output, but got {:?}",
- out_ty
+ "binop {:?} on checked int/uint lhs: {:?} rhs: {:?}",
+ bin_op,
+ in_lhs,
+ in_rhs
),
};
- let res = binop_match! {
- fx, bin_op, signed, lhs, rhs, res_ty, "checked int/uint";
- Add (_) iadd;
- Sub (_) isub;
- Mul (_) imul;
- Div (_) bug;
- Rem (_) bug;
- BitXor (_) bug;
- BitAnd (_) bug;
- BitOr (_) bug;
- Shl (_) ishl;
- Shr (false) ushr;
- Shr (true) sshr;
-
- Eq (_) bug;
- Lt (_) bug;
- Le (_) bug;
- Ne (_) bug;
- Ge (_) bug;
- Gt (_) bug;
-
- Offset (_) bug;
- };
-
// TODO: check for overflow
- let has_overflow = CValue::const_val(fx, fx.tcx.types.bool, 0);
+ let has_overflow = fx.bcx.ins().iconst(types::I8, 0);
- let out_place = CPlace::temp(fx, out_ty);
- out_place
- .place_field(fx, mir::Field::new(0))
- .write_cvalue(fx, res);
- println!("abc");
- out_place
- .place_field(fx, mir::Field::new(1))
- .write_cvalue(fx, has_overflow);
+ let out_place = CPlace::new_stack_slot(fx, out_ty);
+ let out_layout = out_place.layout();
+ out_place.write_cvalue(fx, CValue::ByValPair(res, has_overflow, out_layout));
out_place.to_cvalue(fx)
}
fn trans_float_binop<'a, 'tcx: 'a>(
- fx: &mut FunctionCx<'a, 'tcx>,
+ fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
bin_op: BinOp,
lhs: CValue<'tcx>,
rhs: CValue<'tcx>,
assert_eq!(lhs.layout().ty, ty);
assert_eq!(rhs.layout().ty, ty);
match ty.sty {
- TypeVariants::TyFloat(FloatTy::F32) => fx.easy_call("fmodf", &[lhs, rhs], ty),
- TypeVariants::TyFloat(FloatTy::F64) => fx.easy_call("fmod", &[lhs, rhs], ty),
+ ty::Float(FloatTy::F32) => fx.easy_call("fmodf", &[lhs, rhs], ty),
+ ty::Float(FloatTy::F64) => fx.easy_call("fmod", &[lhs, rhs], ty),
_ => bug!(),
}
});
}
fn trans_char_binop<'a, 'tcx: 'a>(
- fx: &mut FunctionCx<'a, 'tcx>,
+ fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
bin_op: BinOp,
lhs: CValue<'tcx>,
rhs: CValue<'tcx>,
}
fn trans_ptr_binop<'a, 'tcx: 'a>(
- fx: &mut FunctionCx<'a, 'tcx>,
+ fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
bin_op: BinOp,
lhs: CValue<'tcx>,
rhs: CValue<'tcx>,
- ty: Ty<'tcx>,
+ ret_ty: Ty<'tcx>,
) -> CValue<'tcx> {
- match lhs.layout().ty.sty {
- TypeVariants::TyRawPtr(TypeAndMut { ty, mutbl: _ }) => {
- if !ty.is_sized(fx.tcx.at(DUMMY_SP), ParamEnv::reveal_all()) {
- unimpl!("Unsized values are not yet implemented");
- }
- }
+ let not_fat = match lhs.layout().ty.sty {
+ ty::RawPtr(TypeAndMut { ty, mutbl: _ }) => ty.is_sized(fx.tcx.at(DUMMY_SP), ParamEnv::reveal_all()),
+ ty::FnPtr(..) => true,
_ => bug!("trans_ptr_binop on non ptr"),
- }
- binop_match! {
- fx, bin_op, false, lhs, rhs, ty, "ptr";
- Add (_) bug;
- Sub (_) bug;
- Mul (_) bug;
- Div (_) bug;
- Rem (_) bug;
- BitXor (_) bug;
- BitAnd (_) bug;
- BitOr (_) bug;
- Shl (_) bug;
- Shr (_) bug;
+ };
+ if not_fat {
+ if let BinOp::Offset = bin_op {
+ let (base, offset) = (lhs, rhs.load_scalar(fx));
+ let pointee_ty = base.layout().ty.builtin_deref(true).unwrap().ty;
+ let pointee_size = fx.layout_of(pointee_ty).size.bytes();
+ let ptr_diff = fx.bcx.ins().imul_imm(offset, pointee_size as i64);
+ let base_val = base.load_scalar(fx);
+ let res = fx.bcx.ins().iadd(base_val, ptr_diff);
+ return CValue::ByVal(res, base.layout());
+ }
- Eq (_) icmp(Equal);
- Lt (_) icmp(UnsignedLessThan);
- Le (_) icmp(UnsignedLessThanOrEqual);
- Ne (_) icmp(NotEqual);
- Ge (_) icmp(UnsignedGreaterThanOrEqual);
- Gt (_) icmp(UnsignedGreaterThan);
+ binop_match! {
+ fx, bin_op, false, lhs, rhs, ret_ty, "ptr";
+ Add (_) bug;
+ Sub (_) bug;
+ Mul (_) bug;
+ Div (_) bug;
+ Rem (_) bug;
+ BitXor (_) bug;
+ BitAnd (_) bug;
+ BitOr (_) bug;
+ Shl (_) bug;
+ Shr (_) bug;
+
+ Eq (_) icmp(Equal);
+ Lt (_) icmp(UnsignedLessThan);
+ Le (_) icmp(UnsignedLessThanOrEqual);
+ Ne (_) icmp(NotEqual);
+ Ge (_) icmp(UnsignedGreaterThanOrEqual);
+ Gt (_) icmp(UnsignedGreaterThan);
- Offset (_) iadd;
+ Offset (_) bug; // Handled above
+ }
+ } else {
+ let (lhs_ptr, lhs_extra) = lhs.load_value_pair(fx);
+ let (rhs_ptr, rhs_extra) = rhs.load_value_pair(fx);
+ let res = match bin_op {
+ BinOp::Eq => {
+ let ptr_eq = fx.bcx.ins().icmp(IntCC::Equal, lhs_ptr, rhs_ptr);
+ let extra_eq = fx.bcx.ins().icmp(IntCC::Equal, lhs_extra, rhs_extra);
+ fx.bcx.ins().band(ptr_eq, extra_eq)
+ }
+ BinOp::Ne => {
+ let ptr_ne = fx.bcx.ins().icmp(IntCC::NotEqual, lhs_ptr, rhs_ptr);
+ let extra_ne = fx.bcx.ins().icmp(IntCC::NotEqual, lhs_extra, rhs_extra);
+ fx.bcx.ins().bor(ptr_ne, extra_ne)
+ }
+ _ => unimplemented!(
+ "trans_ptr_binop({:?}, <fat ptr>, <fat ptr>) not implemented",
+ bin_op
+ ),
+ };
+
+ assert_eq!(fx.tcx.types.bool, ret_ty);
+ let ret_layout = fx.layout_of(ret_ty);
+ CValue::ByVal(fx.bcx.ins().bint(types::I8, res), ret_layout)
}
}
pub fn trans_place<'a, 'tcx: 'a>(
- fx: &mut FunctionCx<'a, 'tcx>,
+ fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
place: &Place<'tcx>,
) -> CPlace<'tcx> {
match place {
Place::Projection(projection) => {
let base = trans_place(fx, &projection.base);
match projection.elem {
- ProjectionElem::Deref => {
- let layout = fx.layout_of(place.ty(&*fx.mir, fx.tcx).to_ty(fx.tcx));
- if layout.is_unsized() {
- unimpl!("Unsized places are not yet implemented");
- }
- CPlace::Addr(base.to_cvalue(fx).load_value(fx), layout)
- }
+ ProjectionElem::Deref => base.place_deref(fx),
ProjectionElem::Field(field, _ty) => base.place_field(fx, field),
ProjectionElem::Index(local) => {
- let index = fx.get_local_place(local).to_cvalue(fx).load_value(fx);
+ let index = fx.get_local_place(local).to_cvalue(fx).load_scalar(fx);
base.place_index(fx, index)
}
ProjectionElem::ConstantIndex {
offset,
min_length: _,
- from_end: false,
- } => unimplemented!(
- "projection const index {:?} offset {:?} not from end",
- projection.base,
- offset
- ),
- ProjectionElem::ConstantIndex {
- offset,
- min_length: _,
- from_end: true,
- } => unimplemented!(
- "projection const index {:?} offset {:?} from end",
- projection.base,
- offset
- ),
- ProjectionElem::Subslice { from, to } => unimplemented!(
+ from_end,
+ } => {
+ let index = if !from_end {
+ fx.bcx.ins().iconst(fx.pointer_type, offset as i64)
+ } else {
+ let len = codegen_array_len(fx, base);
+ fx.bcx.ins().iadd_imm(len, -(offset as i64))
+ };
+ base.place_index(fx, index)
+ }
+ ProjectionElem::Subslice { from, to } => unimpl!(
"projection subslice {:?} from {} to {}",
projection.base,
from,
}
pub fn trans_operand<'a, 'tcx>(
- fx: &mut FunctionCx<'a, 'tcx>,
+ fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
operand: &Operand<'tcx>,
) -> CValue<'tcx> {
match operand {
projects / rust.git / blobdiff