-use rustc::ty::adjustment::PointerCast;
+use rustc_index::vec::IndexVec;
+use rustc_middle::ty::adjustment::PointerCast;
use crate::prelude::*;
-pub fn trans_fn<'a, 'clif, 'tcx: 'a, B: Backend + 'static>(
- cx: &mut crate::CodegenCx<'clif, 'tcx, B>,
+pub(crate) fn trans_fn<'tcx, B: Backend + 'static>(
+ cx: &mut crate::CodegenCx<'tcx, B>,
instance: Instance<'tcx>,
linkage: Linkage,
) {
let mir = tcx.instance_mir(instance.def);
- // Check fn sig for u128 and i128 and replace those functions with a trap.
- {
- // FIXME implement u128 and i128 support
-
- // Check sig for u128 and i128
- let fn_sig = tcx.normalize_erasing_late_bound_regions(ParamEnv::reveal_all(), &instance.fn_sig(tcx));
-
- struct UI128Visitor<'tcx>(TyCtxt<'tcx>, bool);
-
- impl<'tcx> rustc::ty::fold::TypeVisitor<'tcx> for UI128Visitor<'tcx> {
- fn visit_ty(&mut self, t: Ty<'tcx>) -> bool {
- if t.sty == self.0.types.u128.sty || t.sty == self.0.types.i128.sty {
- self.1 = true;
- return false; // stop visiting
- }
-
- t.super_visit_with(self)
- }
- }
-
- let mut visitor = UI128Visitor(tcx, false);
- fn_sig.visit_with(&mut visitor);
-
- //If found replace function with a trap.
- if visitor.1 {
- tcx.sess.warn("u128 and i128 are not yet supported. \
- Functions using these as args will be replaced with a trap.");
-
- // Declare function with fake signature
- let sig = Signature {
- params: vec![AbiParam::new(types::INVALID)],
- returns: vec![],
- call_conv: CallConv::Fast,
- };
- let name = tcx.symbol_name(instance).as_str();
- let func_id = cx.module.declare_function(&*name, linkage, &sig).unwrap();
-
- // Create trapping function
- let mut func = Function::with_name_signature(ExternalName::user(0, 0), sig);
- let mut func_ctx = FunctionBuilderContext::new();
- let mut bcx = FunctionBuilder::new(&mut func, &mut func_ctx);
- let start_ebb = bcx.create_ebb();
- bcx.append_ebb_params_for_function_params(start_ebb);
- bcx.switch_to_block(start_ebb);
-
- let mut fx = FunctionCx {
- tcx,
- module: cx.module,
- pointer_type: pointer_ty(tcx),
-
- instance,
- mir,
-
- bcx,
- ebb_map: HashMap::new(),
- local_map: HashMap::new(),
-
- clif_comments: crate::pretty_clif::CommentWriter::new(tcx, instance),
- constants: &mut cx.ccx,
- caches: &mut cx.caches,
- source_info_set: indexmap::IndexSet::new(),
- };
-
- crate::trap::trap_unreachable(&mut fx, "[unimplemented] Called function with u128 or i128 as argument.");
- fx.bcx.seal_all_blocks();
- fx.bcx.finalize();
-
- // Define function
- cx.caches.context.func = func;
- cx.module
- .define_function(func_id, &mut cx.caches.context)
- .unwrap();
- cx.caches.context.clear();
- return;
- }
- }
-
// Declare function
- let (name, sig) = get_function_name_and_sig(tcx, instance, false);
+ let (name, sig) = get_function_name_and_sig(tcx, cx.module.isa().triple(), 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));
- // Make FunctionBuilder
- let mut func = Function::with_name_signature(ExternalName::user(0, 0), sig);
+ cx.cached_context.clear();
+
+ // Make the FunctionBuilder
let mut func_ctx = FunctionBuilderContext::new();
+ let mut func = std::mem::replace(&mut cx.cached_context.func, Function::new());
+ func.name = ExternalName::user(0, func_id.as_u32());
+ func.signature = sig;
+ func.collect_debug_info();
+
let mut bcx = FunctionBuilder::new(&mut func, &mut func_ctx);
- // Predefine ebb's
- let start_ebb = bcx.create_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());
- }
+ // Predefine blocks
+ let start_block = bcx.create_block();
+ let block_map: IndexVec<BasicBlock, Block> = (0..mir.basic_blocks().len())
+ .map(|_| bcx.create_block())
+ .collect();
// 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 {
+ cx,
tcx,
- module: cx.module,
pointer_type,
instance,
mir,
bcx,
- ebb_map,
- local_map: HashMap::new(),
+ block_map,
+ local_map: FxHashMap::with_capacity_and_hasher(mir.local_decls.len(), Default::default()),
+ caller_location: None, // set by `codegen_fn_prelude`
+ cold_blocks: EntitySet::new(),
clif_comments,
- constants: &mut cx.ccx,
- caches: &mut cx.caches,
source_info_set: indexmap::IndexSet::new(),
+ next_ssa_var: 0,
+
+ inline_asm_index: 0,
};
- with_unimpl_span(fx.mir.span, || {
- crate::abi::codegen_fn_prelude(&mut fx, start_ebb);
- codegen_fn_content(&mut fx);
+ let arg_uninhabited = fx.mir.args_iter().any(|arg| {
+ fx.layout_of(fx.monomorphize(&fx.mir.local_decls[arg].ty))
+ .abi
+ .is_uninhabited()
});
+ if arg_uninhabited {
+ fx.bcx
+ .append_block_params_for_function_params(fx.block_map[START_BLOCK]);
+ fx.bcx.switch_to_block(fx.block_map[START_BLOCK]);
+ crate::trap::trap_unreachable(&mut fx, "function has uninhabited argument");
+ } else {
+ tcx.sess.time("codegen clif ir", || {
+ tcx.sess.time("codegen prelude", || {
+ crate::abi::codegen_fn_prelude(&mut fx, start_block)
+ });
+ codegen_fn_content(&mut fx);
+ });
+ }
+
// Recover all necessary data from fx, before accessing func will prevent future access to it.
let instance = fx.instance;
- let clif_comments = fx.clif_comments;
+ let mut clif_comments = fx.clif_comments;
let source_info_set = fx.source_info_set;
+ let local_map = fx.local_map;
+ let cold_blocks = fx.cold_blocks;
+
+ // Store function in context
+ let context = &mut cx.cached_context;
+ context.func = func;
- #[cfg(debug_assertions)]
- crate::pretty_clif::write_clif_file(cx.tcx, "unopt", instance, &func, &clif_comments, None);
+ crate::pretty_clif::write_clif_file(tcx, "unopt", None, instance, &context, &clif_comments);
// Verify function
- verify_func(tcx, &clif_comments, &func);
+ verify_func(tcx, &clif_comments, &context.func);
+
+ // Perform rust specific optimizations
+ tcx.sess.time("optimize clif ir", || {
+ crate::optimize::optimize_function(
+ tcx,
+ instance,
+ context,
+ &cold_blocks,
+ &mut clif_comments,
+ );
+ });
- // Define function
- let context = &mut cx.caches.context;
- context.func = func;
- cx.module
- .define_function(func_id, context)
- .unwrap();
+ // If the return block is not reachable, then the SSA builder may have inserted an `iconst.i128`
+ // instruction, which doesn't have an encoding.
+ context.compute_cfg();
+ context.compute_domtree();
+ context.eliminate_unreachable_code(cx.module.isa()).unwrap();
+ context.dce(cx.module.isa()).unwrap();
- let value_ranges = context.build_value_labels_ranges(cx.module.isa()).expect("value location ranges");
+ // Define function
+ let module = &mut cx.module;
+ tcx.sess.time("define function", || {
+ module
+ .define_function(
+ func_id,
+ context,
+ &mut cranelift_codegen::binemit::NullTrapSink {},
+ )
+ .unwrap()
+ });
// Write optimized function to file for debugging
- #[cfg(debug_assertions)]
- crate::pretty_clif::write_clif_file(cx.tcx, "opt", instance, &context.func, &clif_comments, Some(&value_ranges));
+ crate::pretty_clif::write_clif_file(
+ tcx,
+ "opt",
+ Some(cx.module.isa()),
+ instance,
+ &context,
+ &clif_comments,
+ );
// Define debuginfo for function
let isa = cx.module.isa();
- debug_context
- .as_mut()
- .map(|x| x.define(tcx, context, isa, &source_info_set));
+ let debug_context = &mut cx.debug_context;
+ let unwind_context = &mut cx.unwind_context;
+ tcx.sess.time("generate debug info", || {
+ if let Some(debug_context) = debug_context {
+ debug_context.define_function(
+ instance,
+ func_id,
+ &name,
+ isa,
+ context,
+ &source_info_set,
+ local_map,
+ );
+ }
+ unwind_context.add_function(func_id, &context, isa);
+ });
// Clear context to make it usable for the next function
context.clear();
}
-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));
+pub(crate) fn verify_func(
+ tcx: TyCtxt<'_>,
+ writer: &crate::pretty_clif::CommentWriter,
+ func: &Function,
+) {
+ tcx.sess.time("verify clif ir", || {
+ let flags = cranelift_codegen::settings::Flags::new(cranelift_codegen::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>) {
+fn codegen_fn_content(fx: &mut FunctionCx<'_, '_, impl Backend>) {
+ crate::constant::check_constants(fx);
+
for (bb, bb_data) in fx.mir.basic_blocks().iter_enumerated() {
+ let block = fx.get_block(bb);
+ fx.bcx.switch_to_block(block);
+
if bb_data.is_cleanup {
// Unwinding after panicking is not supported
continue;
- }
- let ebb = fx.get_ebb(bb);
- fx.bcx.switch_to_block(ebb);
+ // FIXME once unwinding is supported uncomment next lines
+ // // Unwinding is unlikely to happen, so mark cleanup block's as cold.
+ // fx.cold_blocks.insert(block);
+ }
fx.bcx.ins().nop();
for stmt in &bb_data.statements {
fx.set_debug_loc(stmt.source_info);
- trans_stmt(fx, ebb, stmt);
+ trans_stmt(fx, block, stmt);
}
#[cfg(debug_assertions)]
.kind
.fmt_head(&mut terminator_head)
.unwrap();
- let inst = fx.bcx.func.layout.last_inst(ebb).unwrap();
+ let inst = fx.bcx.func.layout.last_inst(block).unwrap();
fx.add_comment(inst, terminator_head);
}
match &bb_data.terminator().kind {
TerminatorKind::Goto { target } => {
- let ebb = fx.get_ebb(*target);
- fx.bcx.ins().jump(ebb, &[]);
+ if let TerminatorKind::Return = fx.mir[*target].terminator().kind {
+ let mut can_immediately_return = true;
+ for stmt in &fx.mir[*target].statements {
+ if let StatementKind::StorageDead(_) = stmt.kind {
+ } else {
+ // FIXME Can sometimes happen, see rust-lang/rust#70531
+ can_immediately_return = false;
+ break;
+ }
+ }
+
+ if can_immediately_return {
+ crate::abi::codegen_return(fx);
+ continue;
+ }
+ }
+
+ let block = fx.get_block(*target);
+ fx.bcx.ins().jump(block, &[]);
}
TerminatorKind::Return => {
crate::abi::codegen_return(fx);
target,
cleanup: _,
} => {
+ if !fx.tcx.sess.overflow_checks() {
+ if let mir::AssertKind::OverflowNeg(_) = *msg {
+ let target = fx.get_block(*target);
+ fx.bcx.ins().jump(target, &[]);
+ continue;
+ }
+ }
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);
+
+ let target = fx.get_block(*target);
+ let failure = fx.bcx.create_block();
+ fx.cold_blocks.insert(failure);
+
if *expected {
- fx.bcx.ins().brnz(cond, target, &[]);
+ fx.bcx.ins().brz(cond, failure, &[]);
} else {
- fx.bcx.ins().brz(cond, target, &[]);
+ fx.bcx.ins().brnz(cond, failure, &[]);
+ };
+ fx.bcx.ins().jump(target, &[]);
+
+ fx.bcx.switch_to_block(failure);
+
+ let location = fx
+ .get_caller_location(bb_data.terminator().source_info.span)
+ .load_scalar(fx);
+
+ let args;
+ let lang_item = match msg {
+ AssertKind::BoundsCheck { ref len, ref index } => {
+ let len = trans_operand(fx, len).load_scalar(fx);
+ let index = trans_operand(fx, index).load_scalar(fx);
+ args = [index, len, location];
+ rustc_hir::LangItem::PanicBoundsCheck
+ }
+ _ => {
+ let msg_str = msg.description();
+ let msg_ptr = fx.anonymous_str("assert", msg_str);
+ let msg_len = fx
+ .bcx
+ .ins()
+ .iconst(fx.pointer_type, i64::try_from(msg_str.len()).unwrap());
+ args = [msg_ptr, msg_len, location];
+ rustc_hir::LangItem::Panic
+ }
};
- trap_panic(fx, format!("[panic] Assert {:?} failed at {:?}.", msg, bb_data.terminator().source_info.span));
+
+ let def_id = fx.tcx.lang_items().require(lang_item).unwrap_or_else(|s| {
+ fx.tcx
+ .sess
+ .span_fatal(bb_data.terminator().source_info.span, &s)
+ });
+
+ let instance = Instance::mono(fx.tcx, def_id).polymorphize(fx.tcx);
+ let symbol_name = fx.tcx.symbol_name(instance).name;
+
+ fx.lib_call(
+ &*symbol_name,
+ vec![fx.pointer_type, fx.pointer_type, fx.pointer_type],
+ vec![],
+ &args,
+ );
+
+ crate::trap::trap_unreachable(fx, "panic lang item returned");
}
TerminatorKind::SwitchInt {
discr,
- switch_ty: _,
+ switch_ty,
values,
targets,
} => {
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);
+
+ if switch_ty.kind() == fx.tcx.types.bool.kind() {
+ assert_eq!(targets.len(), 2);
+ let then_block = fx.get_block(targets[0]);
+ let else_block = fx.get_block(targets[1]);
+ let test_zero = match **values {
+ [0] => true,
+ [1] => false,
+ _ => unreachable!("{:?}", values),
+ };
+
+ let discr = crate::optimize::peephole::maybe_unwrap_bint(&mut fx.bcx, discr);
+ let (discr, is_inverted) =
+ crate::optimize::peephole::maybe_unwrap_bool_not(&mut fx.bcx, discr);
+ let test_zero = if is_inverted { !test_zero } else { test_zero };
+ let discr = crate::optimize::peephole::maybe_unwrap_bint(&mut fx.bcx, discr);
+ let discr =
+ crate::optimize::peephole::make_branchable_value(&mut fx.bcx, discr);
+ if test_zero {
+ fx.bcx.ins().brz(discr, then_block, &[]);
+ fx.bcx.ins().jump(else_block, &[]);
+ } else {
+ fx.bcx.ins().brnz(discr, then_block, &[]);
+ fx.bcx.ins().jump(else_block, &[]);
+ }
+ } else {
+ let mut switch = ::cranelift_frontend::Switch::new();
+ for (i, value) in values.iter().enumerate() {
+ let block = fx.get_block(targets[i]);
+ switch.set_entry(*value, block);
+ }
+ let otherwise_block = fx.get_block(targets[targets.len() - 1]);
+ switch.emit(&mut fx.bcx, discr, otherwise_block);
}
- let otherwise_ebb = fx.get_ebb(targets[targets.len() - 1]);
- switch.emit(&mut fx.bcx, discr, otherwise_ebb);
}
TerminatorKind::Call {
func,
args,
destination,
+ fn_span,
cleanup: _,
from_hir_call: _,
} => {
- crate::abi::codegen_terminator_call(fx, func, args, destination);
+ fx.tcx.sess.time("codegen call", || {
+ crate::abi::codegen_terminator_call(
+ fx,
+ *fn_span,
+ block,
+ func,
+ args,
+ *destination,
+ )
+ });
+ }
+ TerminatorKind::InlineAsm {
+ template,
+ operands,
+ options,
+ destination,
+ line_spans: _,
+ } => {
+ crate::inline_asm::codegen_inline_asm(
+ fx,
+ bb_data.terminator().source_info.span,
+ template,
+ operands,
+ *options,
+ );
+
+ match *destination {
+ Some(destination) => {
+ let destination_block = fx.get_block(destination);
+ fx.bcx.ins().jump(destination_block, &[]);
+ }
+ None => {
+ crate::trap::trap_unreachable(
+ fx,
+ "[corruption] Returned from noreturn inline asm",
+ );
+ }
+ }
}
TerminatorKind::Resume | TerminatorKind::Abort => {
trap_unreachable(fx, "[corruption] Unwinding bb reached.");
trap_unreachable(fx, "[corruption] Hit unreachable code.");
}
TerminatorKind::Yield { .. }
- | TerminatorKind::FalseEdges { .. }
+ | TerminatorKind::FalseEdge { .. }
| TerminatorKind::FalseUnwind { .. }
| TerminatorKind::DropAndReplace { .. }
| TerminatorKind::GeneratorDrop => {
bug!("shouldn't exist at trans {:?}", bb_data.terminator());
}
TerminatorKind::Drop {
- location,
+ place,
target,
unwind: _,
} => {
- let drop_place = trans_place(fx, location);
- crate::abi::codegen_drop(fx, drop_place);
+ let drop_place = trans_place(fx, *place);
+ crate::abi::codegen_drop(fx, bb_data.terminator().source_info.span, drop_place);
- let target_ebb = fx.get_ebb(*target);
- fx.bcx.ins().jump(target_ebb, &[]);
+ let target_block = fx.get_block(*target);
+ fx.bcx.ins().jump(target_block, &[]);
}
};
}
fx.bcx.finalize();
}
-fn trans_stmt<'a, 'tcx: 'a>(
- fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
- cur_ebb: Ebb,
+fn trans_stmt<'tcx>(
+ fx: &mut FunctionCx<'_, 'tcx, impl Backend>,
+ #[allow(unused_variables)] cur_block: Block,
stmt: &Statement<'tcx>,
) {
- let _print_guard = PrintOnPanic(|| format!("stmt {:?}", stmt));
+ let _print_guard = crate::PrintOnPanic(|| format!("stmt {:?}", stmt));
fx.set_debug_loc(stmt.source_info);
- #[cfg(debug_assertions)]
+ #[cfg(false_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();
+ let inst = fx.bcx.func.layout.last_inst(cur_block).unwrap();
fx.add_comment(inst, format!("{:?}", stmt));
}
}
place,
variant_index,
} => {
- let place = trans_place(fx, place);
- let layout = place.layout();
- if layout.for_variant(&*fx, *variant_index).abi == layout::Abi::Uninhabited {
- return;
- }
- match layout.variants {
- layout::Variants::Single { index } => {
- assert_eq!(index, *variant_index);
- }
- layout::Variants::Multiple {
- discr: _,
- discr_index,
- discr_kind: layout::DiscriminantKind::Tag,
- variants: _,
- } => {
- let ptr = place.place_field(fx, mir::Field::new(discr_index));
- let to = layout
- .ty
- .discriminant_for_variant(fx.tcx, *variant_index)
- .unwrap()
- .val;
- let discr = CValue::const_val(fx, ptr.layout().ty, to as u64 as i64);
- ptr.write_cvalue(fx, discr);
- }
- layout::Variants::Multiple {
- discr: _,
- discr_index,
- discr_kind: layout::DiscriminantKind::Niche {
- dataful_variant,
- ref niche_variants,
- niche_start,
- },
- variants: _,
- } => {
- if *variant_index != dataful_variant {
- let niche = place.place_field(fx, mir::Field::new(discr_index));
- //let niche_llty = niche.layout.immediate_llvm_type(bx.cx);
- 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)
- } else {
- CValue::const_val(fx, niche.layout().ty, niche_value as u64 as i64)
- };
- niche.write_cvalue(fx, niche_llval);
- }
- }
- }
+ let place = trans_place(fx, **place);
+ crate::discriminant::codegen_set_discriminant(fx, place, *variant_index);
}
- StatementKind::Assign(to_place, rval) => {
- let lval = trans_place(fx, to_place);
+ StatementKind::Assign(to_place_and_rval) => {
+ let lval = trans_place(fx, to_place_and_rval.0);
let dest_layout = lval.layout();
- match &**rval {
+ match &to_place_and_rval.1 {
Rvalue::Use(operand) => {
let val = trans_operand(fx, operand);
lval.write_cvalue(fx, val);
}
- Rvalue::Ref(_, _, place) => {
- let place = trans_place(fx, place);
- place.write_place_ref(fx, lval);
+ Rvalue::Ref(_, _, place) | Rvalue::AddressOf(_, place) => {
+ let place = trans_place(fx, *place);
+ let ref_ = place.place_ref(fx, lval.layout());
+ lval.write_cvalue(fx, ref_);
+ }
+ Rvalue::ThreadLocalRef(def_id) => {
+ let val = crate::constant::codegen_tls_ref(fx, *def_id, lval.layout());
+ lval.write_cvalue(fx, val);
}
Rvalue::BinaryOp(bin_op, lhs, rhs) => {
- 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 {
- 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)
- }
- ty::Int(_) => {
- trans_int_binop(fx, *bin_op, lhs, rhs, lval.layout().ty, true)
- }
- 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),
- };
+ let res = crate::num::codegen_binop(fx, *bin_op, lhs, rhs);
lval.write_cvalue(fx, res);
}
Rvalue::CheckedBinaryOp(bin_op, lhs, rhs) => {
- 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 {
- ty::Uint(_) => {
- trans_checked_int_binop(fx, *bin_op, lhs, rhs, lval.layout().ty, false)
- }
- ty::Int(_) => {
- trans_checked_int_binop(fx, *bin_op, lhs, rhs, lval.layout().ty, true)
- }
- _ => unimplemented!("checked binop {:?} for {:?}", bin_op, ty),
+ let res = if !fx.tcx.sess.overflow_checks() {
+ let val =
+ crate::num::trans_int_binop(fx, *bin_op, lhs, rhs).load_scalar(fx);
+ let is_overflow = fx.bcx.ins().iconst(types::I8, 0);
+ CValue::by_val_pair(val, is_overflow, lval.layout())
+ } else {
+ crate::num::trans_checked_int_binop(fx, *bin_op, lhs, rhs)
};
+
lval.write_cvalue(fx, res);
}
Rvalue::UnaryOp(un_op, operand) => {
let layout = operand.layout();
let val = operand.load_scalar(fx);
let res = match un_op {
- 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::Not => match layout.ty.kind() {
+ ty::Bool => {
+ let res = fx.bcx.ins().icmp_imm(IntCC::Equal, val, 0);
+ CValue::by_val(fx.bcx.ins().bint(types::I8, res), layout)
}
- }
- 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)
+ ty::Uint(_) | ty::Int(_) => {
+ CValue::by_val(fx.bcx.ins().bnot(val), layout)
+ }
+ _ => unreachable!("un op Not for {:?}", layout.ty),
+ },
+ UnOp::Neg => match layout.ty.kind() {
+ ty::Int(IntTy::I128) => {
+ // FIXME remove this case once ineg.i128 works
+ let zero = CValue::const_val(fx, layout, 0);
+ crate::num::trans_int_binop(fx, BinOp::Sub, zero, operand)
}
- ty::Float(_) => fx.bcx.ins().fneg(val),
- _ => unimplemented!("un op Neg for {:?}", layout.ty),
+ ty::Int(_) => CValue::by_val(fx.bcx.ins().ineg(val), layout),
+ ty::Float(_) => CValue::by_val(fx.bcx.ins().fneg(val), layout),
+ _ => unreachable!("un op Neg for {:?}", layout.ty),
},
};
- lval.write_cvalue(fx, CValue::by_val(res, layout));
+ lval.write_cvalue(fx, res);
}
- Rvalue::Cast(CastKind::Pointer(PointerCast::ReifyFnPointer), operand, ty) => {
- let layout = fx.layout_of(ty);
- match fx
- .monomorphize(&operand.ty(&fx.mir.local_decls, fx.tcx))
- .sty
- {
+ Rvalue::Cast(CastKind::Pointer(PointerCast::ReifyFnPointer), operand, to_ty) => {
+ let from_ty = fx.monomorphize(&operand.ty(&fx.mir.local_decls, fx.tcx));
+ let to_layout = fx.layout_of(fx.monomorphize(to_ty));
+ match *from_ty.kind() {
ty::FnDef(def_id, substs) => {
let func_ref = fx.get_function_ref(
- Instance::resolve(fx.tcx, ParamEnv::reveal_all(), def_id, substs)
- .unwrap(),
+ Instance::resolve_for_fn_ptr(
+ fx.tcx,
+ ParamEnv::reveal_all(),
+ def_id,
+ substs,
+ )
+ .unwrap()
+ .polymorphize(fx.tcx),
);
let func_addr = fx.bcx.ins().func_addr(fx.pointer_type, func_ref);
- lval.write_cvalue(fx, CValue::by_val(func_addr, layout));
+ lval.write_cvalue(fx, CValue::by_val(func_addr, to_layout));
}
- _ => bug!("Trying to ReifyFnPointer on non FnDef {:?}", ty),
+ _ => bug!("Trying to ReifyFnPointer on non FnDef {:?}", from_ty),
}
}
- Rvalue::Cast(CastKind::Pointer(PointerCast::UnsafeFnPointer), operand, ty)
- | Rvalue::Cast(CastKind::Pointer(PointerCast::MutToConstPointer), operand, ty) => {
+ Rvalue::Cast(CastKind::Pointer(PointerCast::UnsafeFnPointer), operand, to_ty)
+ | Rvalue::Cast(CastKind::Pointer(PointerCast::MutToConstPointer), operand, to_ty)
+ | Rvalue::Cast(CastKind::Pointer(PointerCast::ArrayToPointer), operand, to_ty) => {
+ let to_layout = fx.layout_of(fx.monomorphize(to_ty));
let operand = trans_operand(fx, operand);
- let layout = fx.layout_of(ty);
- lval.write_cvalue(fx, operand.unchecked_cast_to(layout));
+ lval.write_cvalue(fx, operand.cast_pointer_to(to_layout));
}
Rvalue::Cast(CastKind::Misc, operand, to_ty) => {
let operand = trans_operand(fx, operand);
let from_ty = operand.layout().ty;
-
- fn is_fat_ptr<'a, 'tcx: 'a>(fx: &FunctionCx<'a, 'tcx, impl Backend>, ty: Ty<'tcx>) -> bool {
- ty
- .builtin_deref(true)
- .map(|ty::TypeAndMut {ty: pointee_ty, mutbl: _ }| fx.layout_of(pointee_ty).is_unsized())
+ let to_ty = fx.monomorphize(to_ty);
+
+ fn is_fat_ptr<'tcx>(
+ fx: &FunctionCx<'_, 'tcx, impl Backend>,
+ ty: Ty<'tcx>,
+ ) -> bool {
+ ty.builtin_deref(true)
+ .map(
+ |ty::TypeAndMut {
+ ty: pointee_ty,
+ mutbl: _,
+ }| {
+ has_ptr_meta(fx.tcx, pointee_ty)
+ },
+ )
.unwrap_or(false)
}
if is_fat_ptr(fx, from_ty) {
if is_fat_ptr(fx, to_ty) {
// fat-ptr -> fat-ptr
- lval.write_cvalue(fx, operand.unchecked_cast_to(dest_layout));
+ lval.write_cvalue(fx, operand.cast_pointer_to(dest_layout));
} else {
// fat-ptr -> thin-ptr
let (ptr, _extra) = operand.load_scalar_pair(fx);
lval.write_cvalue(fx, CValue::by_val(ptr, dest_layout))
}
- } else if let ty::Adt(adt_def, _substs) = from_ty.sty {
+ } else if let ty::Adt(adt_def, _substs) = from_ty.kind() {
// enum -> discriminant value
assert!(adt_def.is_enum());
- match to_ty.sty {
- ty::Uint(_) | ty::Int(_) => {},
+ match to_ty.kind() {
+ ty::Uint(_) | ty::Int(_) => {}
_ => unreachable!("cast adt {} -> {}", from_ty, to_ty),
}
- // FIXME avoid forcing to stack
- let place =
- CPlace::for_addr(operand.force_stack(fx), operand.layout());
- let discr = trans_get_discriminant(fx, place, fx.layout_of(to_ty));
- lval.write_cvalue(fx, discr);
+ use rustc_target::abi::{Int, TagEncoding, Variants};
+
+ match &operand.layout().variants {
+ Variants::Single { index } => {
+ let discr = operand
+ .layout()
+ .ty
+ .discriminant_for_variant(fx.tcx, *index)
+ .unwrap();
+ let discr = if discr.ty.is_signed() {
+ rustc_middle::mir::interpret::sign_extend(
+ discr.val,
+ fx.layout_of(discr.ty).size,
+ )
+ } else {
+ discr.val
+ };
+
+ let discr = CValue::const_val(fx, fx.layout_of(to_ty), discr);
+ lval.write_cvalue(fx, discr);
+ }
+ Variants::Multiple {
+ tag,
+ tag_field,
+ tag_encoding: TagEncoding::Direct,
+ variants: _,
+ } => {
+ let cast_to = fx.clif_type(dest_layout.ty).unwrap();
+
+ // Read the tag/niche-encoded discriminant from memory.
+ let encoded_discr =
+ operand.value_field(fx, mir::Field::new(*tag_field));
+ let encoded_discr = encoded_discr.load_scalar(fx);
+
+ // Decode the discriminant (specifically if it's niche-encoded).
+ let signed = match tag.value {
+ Int(_, signed) => signed,
+ _ => false,
+ };
+ let val = clif_intcast(fx, encoded_discr, cast_to, signed);
+ let val = CValue::by_val(val, dest_layout);
+ lval.write_cvalue(fx, val);
+ }
+ Variants::Multiple { .. } => unreachable!(),
+ }
} else {
- let from_clif_ty = fx.clif_type(from_ty).unwrap();
let to_clif_ty = fx.clif_type(to_ty).unwrap();
let from = operand.load_scalar(fx);
- let signed = match from_ty.sty {
- ty::Ref(..) | ty::RawPtr(..) | ty::FnPtr(..) | ty::Char | ty::Uint(..) | ty::Bool => false,
- ty::Int(..) => true,
- ty::Float(..) => false, // `signed` is unused for floats
- _ => panic!("{}", from_ty),
- };
-
- let res = if from_clif_ty.is_int() && to_clif_ty.is_int() {
- // int-like -> int-like
- crate::common::clif_intcast(
- fx,
- from,
- to_clif_ty,
- signed,
- )
- } else if from_clif_ty.is_int() && to_clif_ty.is_float() {
- // int-like -> float
- if signed {
- fx.bcx.ins().fcvt_from_sint(to_clif_ty, from)
- } else {
- fx.bcx.ins().fcvt_from_uint(to_clif_ty, from)
- }
- } else if from_clif_ty.is_float() && to_clif_ty.is_int() {
- // float -> int-like
- let from = operand.load_scalar(fx);
- if signed {
- fx.bcx.ins().fcvt_to_sint_sat(to_clif_ty, from)
- } else {
- fx.bcx.ins().fcvt_to_uint_sat(to_clif_ty, from)
- }
- } else if from_clif_ty.is_float() && to_clif_ty.is_float() {
- // float -> float
- match (from_clif_ty, to_clif_ty) {
- (types::F32, types::F64) => {
- fx.bcx.ins().fpromote(types::F64, from)
- }
- (types::F64, types::F32) => {
- fx.bcx.ins().fdemote(types::F32, from)
- }
- _ => from,
- }
- } else {
- unimpl!("rval misc {:?} {:?}", from_ty, to_ty)
- };
+ let res = clif_int_or_float_cast(
+ fx,
+ from,
+ type_sign(from_ty),
+ to_clif_ty,
+ type_sign(to_ty),
+ );
lval.write_cvalue(fx, CValue::by_val(res, dest_layout));
}
}
- Rvalue::Cast(CastKind::Pointer(PointerCast::ClosureFnPointer(_)), operand, _ty) => {
+ Rvalue::Cast(
+ CastKind::Pointer(PointerCast::ClosureFnPointer(_)),
+ operand,
+ _to_ty,
+ ) => {
let operand = trans_operand(fx, operand);
- match operand.layout().ty.sty {
+ match *operand.layout().ty.kind() {
ty::Closure(def_id, substs) => {
let instance = Instance::resolve_closure(
fx.tcx,
def_id,
substs,
ty::ClosureKind::FnOnce,
- );
+ )
+ .polymorphize(fx.tcx);
let func_ref = fx.get_function_ref(instance);
let func_addr = fx.bcx.ins().func_addr(fx.pointer_type, func_ref);
lval.write_cvalue(fx, CValue::by_val(func_addr, lval.layout()));
}
- _ => {
- bug!("{} cannot be cast to a fn ptr", operand.layout().ty)
- }
+ _ => bug!("{} cannot be cast to a fn ptr", operand.layout().ty),
}
}
- Rvalue::Cast(CastKind::Pointer(PointerCast::Unsize), operand, _ty) => {
+ Rvalue::Cast(CastKind::Pointer(PointerCast::Unsize), operand, _to_ty) => {
let operand = trans_operand(fx, operand);
operand.unsize_value(fx, lval);
}
Rvalue::Discriminant(place) => {
- let place = trans_place(fx, place);
- let discr = trans_get_discriminant(fx, place, dest_layout);
+ let place = trans_place(fx, *place);
+ let value = place.to_cvalue(fx);
+ let discr =
+ crate::discriminant::codegen_get_discriminant(fx, value, dest_layout);
lval.write_cvalue(fx, discr);
}
Rvalue::Repeat(operand, times) => {
let operand = trans_operand(fx, operand);
- for i in 0..*times {
- let index = fx.bcx.ins().iconst(fx.pointer_type, i as i64);
+ let times = fx
+ .monomorphize(times)
+ .eval(fx.tcx, ParamEnv::reveal_all())
+ .val
+ .try_to_bits(fx.tcx.data_layout.pointer_size)
+ .unwrap();
+ if fx.clif_type(operand.layout().ty) == Some(types::I8) {
+ let times = fx.bcx.ins().iconst(fx.pointer_type, times as i64);
+ // FIXME use emit_small_memset where possible
+ let addr = lval.to_ptr().get_addr(fx);
+ let val = operand.load_scalar(fx);
+ fx.bcx.call_memset(fx.cx.module.target_config(), addr, val, times);
+ } else {
+ let loop_block = fx.bcx.create_block();
+ let done_block = fx.bcx.create_block();
+ let index = fx.bcx.append_block_param(loop_block, fx.pointer_type);
+ let zero = fx.bcx.ins().iconst(fx.pointer_type, 0);
+ fx.bcx.ins().jump(loop_block, &[zero]);
+
+ fx.bcx.switch_to_block(loop_block);
let to = lval.place_index(fx, index);
to.write_cvalue(fx, operand);
+
+ let index = fx.bcx.ins().iadd_imm(index, 1);
+ let done = fx.bcx.ins().icmp_imm(IntCC::Equal, index, times as i64);
+ fx.bcx.ins().brz(done, loop_block, &[index]);
+ fx.bcx.ins().jump(done_block, &[]);
+
+ fx.bcx.switch_to_block(done_block);
}
}
Rvalue::Len(place) => {
- let place = trans_place(fx, 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::by_val(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 content_ty = fx.monomorphize(content_ty);
let layout = fx.layout_of(content_ty);
let llsize = fx.bcx.ins().iconst(usize_type, layout.size.bytes() as i64);
let llalign = fx
let box_layout = fx.layout_of(fx.tcx.mk_box(content_ty));
// Allocate space:
- let def_id = match fx.tcx.lang_items().require(ExchangeMallocFnLangItem) {
+ let def_id = match fx
+ .tcx
+ .lang_items()
+ .require(rustc_hir::LangItem::ExchangeMalloc)
+ {
Ok(id) => id,
Err(s) => {
fx.tcx
.fatal(&format!("allocation of `{}` {}", box_layout.ty, s));
}
};
- let instance = ty::Instance::mono(fx.tcx, def_id);
+ let instance = ty::Instance::mono(fx.tcx, def_id).polymorphize(fx.tcx);
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];
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);
+ .is_sized(fx.tcx.at(stmt.source_info.span), ParamEnv::reveal_all()));
+ let ty_size = fx.layout_of(fx.monomorphize(ty)).size.bytes();
+ let val =
+ CValue::const_val(fx, fx.layout_of(fx.tcx.types.usize), ty_size.into());
lval.write_cvalue(fx, val);
}
Rvalue::Aggregate(kind, operands) => match **kind {
to.write_cvalue(fx, operand);
}
}
- _ => unimpl!("shouldn't exist at trans {:?}", rval),
+ _ => unreachable!("shouldn't exist at trans {:?}", to_place_and_rval.1),
},
}
}
| StatementKind::Retag { .. }
| StatementKind::AscribeUserType(..) => {}
- StatementKind::InlineAsm(asm) => {
- use syntax::ast::Name;
- let InlineAsm { asm, outputs: _, inputs: _ } = &**asm;
- let rustc::hir::InlineAsm {
- asm: asm_code, // Name
- outputs, // Vec<Name>
- inputs, // Vec<Name>
- clobbers, // Vec<Name>
- volatile, // bool
- alignstack, // bool
- dialect, // syntax::ast::AsmDialect
+ StatementKind::LlvmInlineAsm(asm) => {
+ use rustc_span::symbol::Symbol;
+ let LlvmInlineAsm {
+ asm,
+ outputs,
+ inputs,
+ } = &**asm;
+ let rustc_hir::LlvmInlineAsmInner {
+ asm: asm_code, // Name
+ outputs: output_names, // Vec<LlvmInlineAsmOutput>
+ inputs: input_names, // Vec<Name>
+ clobbers, // Vec<Name>
+ volatile, // bool
+ alignstack, // bool
+ dialect: _,
asm_str_style: _,
- ctxt: _,
} = asm;
- match &*asm_code.as_str() {
- "cpuid" | "cpuid\n" => {
- assert_eq!(inputs, &[Name::intern("{eax}"), Name::intern("{ecx}")]);
-
- assert_eq!(outputs.len(), 4);
- for (i, c) in (&["={eax}", "={ebx}", "={ecx}", "={edx}"]).iter().enumerate() {
- assert_eq!(&outputs[i].constraint.as_str(), c);
- assert!(!outputs[i].is_rw);
- assert!(!outputs[i].is_indirect);
+ match asm_code.as_str().trim() {
+ "" => {
+ // Black box
+ }
+ "mov %rbx, %rsi\n cpuid\n xchg %rbx, %rsi" => {
+ assert_eq!(
+ input_names,
+ &[Symbol::intern("{eax}"), Symbol::intern("{ecx}")]
+ );
+ assert_eq!(output_names.len(), 4);
+ for (i, c) in (&["={eax}", "={esi}", "={ecx}", "={edx}"])
+ .iter()
+ .enumerate()
+ {
+ assert_eq!(&output_names[i].constraint.as_str(), c);
+ assert!(!output_names[i].is_rw);
+ assert!(!output_names[i].is_indirect);
}
- assert_eq!(clobbers, &[Name::intern("rbx")]);
+ assert_eq!(clobbers, &[]);
assert!(!volatile);
assert!(!alignstack);
- crate::trap::trap_unimplemented(fx, "__cpuid_count arch intrinsic is not supported");
+ assert_eq!(inputs.len(), 2);
+ let leaf = trans_operand(fx, &inputs[0].1).load_scalar(fx); // %eax
+ let subleaf = trans_operand(fx, &inputs[1].1).load_scalar(fx); // %ecx
+
+ let (eax, ebx, ecx, edx) =
+ crate::intrinsics::codegen_cpuid_call(fx, leaf, subleaf);
+
+ assert_eq!(outputs.len(), 4);
+ trans_place(fx, outputs[0])
+ .write_cvalue(fx, CValue::by_val(eax, fx.layout_of(fx.tcx.types.u32)));
+ trans_place(fx, outputs[1])
+ .write_cvalue(fx, CValue::by_val(ebx, fx.layout_of(fx.tcx.types.u32)));
+ trans_place(fx, outputs[2])
+ .write_cvalue(fx, CValue::by_val(ecx, fx.layout_of(fx.tcx.types.u32)));
+ trans_place(fx, outputs[3])
+ .write_cvalue(fx, CValue::by_val(edx, fx.layout_of(fx.tcx.types.u32)));
}
"xgetbv" => {
- assert_eq!(inputs, &[Name::intern("{ecx}")]);
+ assert_eq!(input_names, &[Symbol::intern("{ecx}")]);
- assert_eq!(outputs.len(), 2);
+ assert_eq!(output_names.len(), 2);
for (i, c) in (&["={eax}", "={edx}"]).iter().enumerate() {
- assert_eq!(&outputs[i].constraint.as_str(), c);
- assert!(!outputs[i].is_rw);
- assert!(!outputs[i].is_indirect);
+ assert_eq!(&output_names[i].constraint.as_str(), c);
+ assert!(!output_names[i].is_rw);
+ assert!(!output_names[i].is_indirect);
}
assert_eq!(clobbers, &[]);
crate::trap::trap_unimplemented(fx, "_xgetbv arch intrinsic is not supported");
}
- _ => unimpl!("Inline assembly is not supported"),
+ // ___chkstk, ___chkstk_ms and __alloca are only used on Windows
+ _ if fx
+ .tcx
+ .symbol_name(fx.instance)
+ .name
+ .starts_with("___chkstk") =>
+ {
+ crate::trap::trap_unimplemented(fx, "Stack probes are not supported");
+ }
+ _ if fx.tcx.symbol_name(fx.instance).name == "__alloca" => {
+ crate::trap::trap_unimplemented(fx, "Alloca is not supported");
+ }
+ // Used in sys::windows::abort_internal
+ "int $$0x29" => {
+ crate::trap::trap_unimplemented(fx, "Windows abort");
+ }
+ _ => fx
+ .tcx
+ .sess
+ .span_fatal(stmt.source_info.span, "Inline assembly is not supported"),
}
}
+ StatementKind::Coverage { .. } => fx.tcx.sess.fatal("-Zcoverage is unimplemented"),
}
}
-fn codegen_array_len<'a, 'tcx: 'a>(
- fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
+fn codegen_array_len<'tcx>(
+ fx: &mut FunctionCx<'_, 'tcx, impl Backend>,
place: CPlace<'tcx>,
) -> Value {
- match place.layout().ty.sty {
+ match *place.layout().ty.kind() {
ty::Array(_elem_ty, len) => {
- let len = crate::constant::force_eval_const(fx, len).unwrap_usize(fx.tcx) as i64;
+ let len = fx
+ .monomorphize(&len)
+ .eval(fx.tcx, ParamEnv::reveal_all())
+ .eval_usize(fx.tcx, ParamEnv::reveal_all()) as i64;
fx.bcx.ins().iconst(fx.pointer_type, len)
}
ty::Slice(_elem_ty) => place
- .to_addr_maybe_unsized(fx)
+ .to_ptr_maybe_unsized()
.1
.expect("Length metadata for slice place"),
_ => bug!("Rvalue::Len({:?})", place),
}
}
-pub fn trans_get_discriminant<'a, 'tcx: 'a>(
- fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
- place: CPlace<'tcx>,
- dest_layout: TyLayout<'tcx>,
-) -> CValue<'tcx> {
- let layout = place.layout();
-
- if layout.abi == layout::Abi::Uninhabited {
- return trap_unreachable_ret_value(fx, dest_layout, "[panic] Tried to get discriminant for uninhabited type.");
- }
-
- let (discr_scalar, discr_index, discr_kind) = match &layout.variants {
- layout::Variants::Single { index } => {
- 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::Multiple { discr, discr_index, discr_kind, variants: _ } => {
- (discr, *discr_index, discr_kind)
- }
- };
-
- let discr = place.place_field(fx, mir::Field::new(discr_index)).to_cvalue(fx);
- let discr_ty = discr.layout().ty;
- let lldiscr = discr.load_scalar(fx);
- match discr_kind {
- layout::DiscriminantKind::Tag => {
- let signed = match discr_scalar.value {
- layout::Int(_, signed) => signed,
- _ => false,
- };
- let val = clif_intcast(fx, lldiscr, fx.clif_type(dest_layout.ty).unwrap(), signed);
- return CValue::by_val(val, dest_layout);
- }
- layout::DiscriminantKind::Niche {
- dataful_variant,
- ref niche_variants,
- niche_start,
- } => {
- 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
- .ins()
- .icmp_imm(IntCC::Equal, lldiscr, *niche_start as u64 as i64);
- let if_true = fx
- .bcx
- .ins()
- .iconst(dest_clif_ty, niche_variants.start().as_u32() as i64);
- let if_false = fx
- .bcx
- .ins()
- .iconst(dest_clif_ty, dataful_variant.as_u32() as i64);
- let val = fx.bcx.ins().select(b, if_true, if_false);
- return CValue::by_val(val, dest_layout);
- } else {
- // Rebase from niche values to discriminant values.
- 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_u32() as i64,
- );
- let if_true =
- clif_intcast(fx, lldiscr, fx.clif_type(dest_layout.ty).unwrap(), false);
- let if_false = fx
- .bcx
- .ins()
- .iconst(dest_clif_ty, dataful_variant.as_u32() as i64);
- let val = fx.bcx.ins().select(b, if_true, if_false);
- return CValue::by_val(val, dest_layout);
- }
- }
- }
-}
-
-macro_rules! binop_match {
- (@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, $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, $rhs);
- CValue::by_val($fx.bcx.ins().bint(types::I8, b), ret_layout)
- }};
- (@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, $rhs);
- CValue::by_val($fx.bcx.ins().bint(types::I8, b), ret_layout)
- }};
- (@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, $signed:expr, $lhs:expr, $rhs:expr, $ret_ty:expr, $name:ident) => {{
- let ret_layout = $fx.layout_of($ret_ty);
- CValue::by_val($fx.bcx.ins().$name($lhs, $rhs), ret_layout)
- }};
- (
- $fx:expr, $bin_op:expr, $signed:expr, $lhs:expr, $rhs:expr, $ret_ty:expr, $bug_fmt:expr;
- $(
- $var:ident ($sign:pat) $name:tt $( ( $($next:tt)* ) )? ;
- )*
- ) => {{
- 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, $signed, lhs, rhs, $ret_ty, $name $( ( $($next)* ) )?),
- )*
- }
- }}
-}
-
-fn trans_bool_binop<'a, 'tcx: 'a>(
- fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
- bin_op: BinOp,
- lhs: CValue<'tcx>,
- rhs: CValue<'tcx>,
- ty: Ty<'tcx>,
-) -> CValue<'tcx> {
- let res = binop_match! {
- fx, bin_op, false, lhs, rhs, ty, "bool";
- Add (_) bug;
- Sub (_) bug;
- Mul (_) bug;
- Div (_) bug;
- Rem (_) bug;
- BitXor (_) bxor;
- BitAnd (_) band;
- BitOr (_) bor;
- Shl (_) bug;
- Shr (_) bug;
-
- Eq (_) icmp(Equal);
- Lt (_) icmp(UnsignedLessThan);
- Le (_) icmp(UnsignedLessThanOrEqual);
- Ne (_) icmp(NotEqual);
- Ge (_) icmp(UnsignedGreaterThanOrEqual);
- Gt (_) icmp(UnsignedGreaterThan);
-
- Offset (_) bug;
- };
-
- res
-}
-
-pub fn trans_int_binop<'a, 'tcx: 'a>(
- fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
- bin_op: BinOp,
- lhs: CValue<'tcx>,
- 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,
- "int binop requires lhs and rhs of same type"
- );
- }
-
- if out_ty == fx.tcx.types.u128 || out_ty == fx.tcx.types.i128 {
- return match (bin_op, signed) {
- _ => {
- let layout = fx.layout_of(out_ty);
- let a = fx.bcx.ins().iconst(types::I64, 42);
- let b = fx.bcx.ins().iconst(types::I64, 0);
- let val = fx.bcx.ins().iconcat(a, b);
- CValue::by_val(val, layout)
- }
- }
- }
-
- binop_match! {
- fx, bin_op, signed, lhs, rhs, out_ty, "int/uint";
- Add (_) iadd;
- Sub (_) isub;
- Mul (_) imul;
- Div (false) udiv;
- Div (true) sdiv;
- Rem (false) urem;
- Rem (true) srem;
- BitXor (_) bxor;
- BitAnd (_) band;
- BitOr (_) bor;
- Shl (_) ishl;
- Shr (false) ushr;
- Shr (true) sshr;
-
- Eq (_) icmp(Equal);
- Lt (false) icmp(UnsignedLessThan);
- Lt (true) icmp(SignedLessThan);
- Le (false) icmp(UnsignedLessThanOrEqual);
- Le (true) icmp(SignedLessThanOrEqual);
- Ne (_) icmp(NotEqual);
- Ge (false) icmp(UnsignedGreaterThanOrEqual);
- Ge (true) icmp(SignedGreaterThanOrEqual);
- Gt (false) icmp(UnsignedGreaterThan);
- Gt (true) icmp(SignedGreaterThan);
-
- Offset (_) bug;
- }
-}
-
-pub fn trans_checked_int_binop<'a, 'tcx: 'a>(
- fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
- bin_op: BinOp,
- 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!(
- in_lhs.layout().ty,
- in_rhs.layout().ty,
- "checked int binop requires lhs and rhs of same type"
- );
- }
+pub(crate) fn trans_place<'tcx>(
+ fx: &mut FunctionCx<'_, 'tcx, impl Backend>,
+ place: Place<'tcx>,
+) -> CPlace<'tcx> {
+ let mut cplace = fx.get_local_place(place.local);
- let lhs = in_lhs.load_scalar(fx);
- let rhs = in_rhs.load_scalar(fx);
- let (res, has_overflow) = if in_lhs.layout().ty == fx.tcx.types.u128 || in_lhs.layout().ty == fx.tcx.types.i128 {
- match (bin_op, signed) {
- _ => {
- let a = fx.bcx.ins().iconst(types::I64, 42);
- let b = fx.bcx.ins().iconst(types::I64, 0);
- (fx.bcx.ins().iconcat(a, b), fx.bcx.ins().bconst(types::B1, false))
+ for elem in place.projection {
+ match elem {
+ PlaceElem::Deref => {
+ cplace = cplace.place_deref(fx);
}
- }
- } else {
- match bin_op {
- BinOp::Add => {
- /*let (val, c_out) = fx.bcx.ins().iadd_cout(lhs, rhs);
- (val, c_out)*/
- // FIXME(CraneStation/cranelift#849) legalize iadd_cout for i8 and i16
- let val = fx.bcx.ins().iadd(lhs, rhs);
- let has_overflow = if !signed {
- fx.bcx.ins().icmp(IntCC::UnsignedLessThan, val, lhs)
- } else {
- let rhs_is_negative = fx.bcx.ins().icmp_imm(IntCC::SignedLessThan, rhs, 0);
- let slt = fx.bcx.ins().icmp(IntCC::SignedLessThan, val, lhs);
- fx.bcx.ins().bxor(rhs_is_negative, slt)
- };
- (val, has_overflow)
+ PlaceElem::Field(field, _ty) => {
+ cplace = cplace.place_field(fx, field);
}
- BinOp::Sub => {
- /*let (val, b_out) = fx.bcx.ins().isub_bout(lhs, rhs);
- (val, b_out)*/
- // FIXME(CraneStation/cranelift#849) legalize isub_bout for i8 and i16
- let val = fx.bcx.ins().isub(lhs, rhs);
- let has_overflow = if !signed {
- fx.bcx.ins().icmp(IntCC::UnsignedGreaterThan, val, lhs)
- } else {
- let rhs_is_negative = fx.bcx.ins().icmp_imm(IntCC::SignedLessThan, rhs, 0);
- let sgt = fx.bcx.ins().icmp(IntCC::SignedGreaterThan, val, lhs);
- fx.bcx.ins().bxor(rhs_is_negative, sgt)
- };
- (val, has_overflow)
+ PlaceElem::Index(local) => {
+ let index = fx.get_local_place(local).to_cvalue(fx).load_scalar(fx);
+ cplace = cplace.place_index(fx, index);
}
- BinOp::Mul => {
- let val = fx.bcx.ins().imul(lhs, rhs);
- /*let val_hi = if !signed {
- fx.bcx.ins().umulhi(lhs, rhs)
- } else {
- fx.bcx.ins().smulhi(lhs, rhs)
- };
- let has_overflow = fx.bcx.ins().icmp_imm(IntCC::NotEqual, val_hi, 0);*/
- // TODO: check for overflow
- let has_overflow = fx.bcx.ins().bconst(types::B1, false);
- (val, has_overflow)
- }
- BinOp::Shl => {
- let val = fx.bcx.ins().ishl(lhs, rhs);
- // TODO: check for overflow
- let has_overflow = fx.bcx.ins().bconst(types::B1, false);
- (val, has_overflow)
- }
- BinOp::Shr => {
- let val = if !signed {
- fx.bcx.ins().ushr(lhs, rhs)
+ PlaceElem::ConstantIndex {
+ offset,
+ min_length: _,
+ from_end,
+ } => {
+ let offset: u64 = offset;
+ let index = if !from_end {
+ fx.bcx.ins().iconst(fx.pointer_type, offset as i64)
} else {
- fx.bcx.ins().sshr(lhs, rhs)
+ let len = codegen_array_len(fx, cplace);
+ fx.bcx.ins().iadd_imm(len, -(offset as i64))
};
- // TODO: check for overflow
- let has_overflow = fx.bcx.ins().bconst(types::B1, false);
- (val, has_overflow)
- }
- _ => bug!(
- "binop {:?} on checked int/uint lhs: {:?} rhs: {:?}",
- bin_op,
- in_lhs,
- in_rhs
- ),
- }
- };
-
- let has_overflow = fx.bcx.ins().bint(types::I8, has_overflow);
- let out_place = CPlace::new_stack_slot(fx, out_ty);
- let out_layout = out_place.layout();
- out_place.write_cvalue(fx, CValue::by_val_pair(res, has_overflow, out_layout));
-
- out_place.to_cvalue(fx)
-}
-
-fn trans_float_binop<'a, 'tcx: 'a>(
- fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
- bin_op: BinOp,
- lhs: CValue<'tcx>,
- rhs: CValue<'tcx>,
- ty: Ty<'tcx>,
-) -> CValue<'tcx> {
- let res = binop_match! {
- fx, bin_op, false, lhs, rhs, ty, "float";
- Add (_) fadd;
- Sub (_) fsub;
- Mul (_) fmul;
- Div (_) fdiv;
- Rem (_) custom(|| {
- assert_eq!(lhs.layout().ty, ty);
- assert_eq!(rhs.layout().ty, ty);
- match ty.sty {
- ty::Float(FloatTy::F32) => fx.easy_call("fmodf", &[lhs, rhs], ty),
- ty::Float(FloatTy::F64) => fx.easy_call("fmod", &[lhs, rhs], ty),
- _ => bug!(),
+ cplace = cplace.place_index(fx, index);
}
- });
- BitXor (_) bxor;
- BitAnd (_) band;
- BitOr (_) bor;
- Shl (_) bug;
- Shr (_) bug;
-
- Eq (_) fcmp(Equal);
- Lt (_) fcmp(LessThan);
- Le (_) fcmp(LessThanOrEqual);
- Ne (_) fcmp(NotEqual);
- Ge (_) fcmp(GreaterThanOrEqual);
- Gt (_) fcmp(GreaterThan);
-
- Offset (_) bug;
- };
-
- res
-}
-
-fn trans_char_binop<'a, 'tcx: 'a>(
- fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
- bin_op: BinOp,
- lhs: CValue<'tcx>,
- rhs: CValue<'tcx>,
- ty: Ty<'tcx>,
-) -> CValue<'tcx> {
- let res = binop_match! {
- fx, bin_op, false, lhs, rhs, ty, "char";
- 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 (_) bug;
- };
-
- res
-}
-
-fn trans_ptr_binop<'a, 'tcx: 'a>(
- fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
- bin_op: BinOp,
- lhs: CValue<'tcx>,
- rhs: CValue<'tcx>,
- ret_ty: Ty<'tcx>,
-) -> CValue<'tcx> {
- 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"),
- };
- 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::by_val(res, base.layout());
- }
-
- 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 (_) bug; // Handled above
- }
- } else {
- let (lhs_ptr, lhs_extra) = lhs.load_scalar_pair(fx);
- let (rhs_ptr, rhs_extra) = rhs.load_scalar_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)
- }
- BinOp::Lt | BinOp::Le | BinOp::Ge | BinOp::Gt => {
- let ptr_eq = fx.bcx.ins().icmp(IntCC::Equal, lhs_ptr, rhs_ptr);
-
- let ptr_cmp = fx.bcx.ins().icmp(match bin_op {
- BinOp::Lt => IntCC::UnsignedLessThan,
- BinOp::Le => IntCC::UnsignedLessThanOrEqual,
- BinOp::Ge => IntCC::UnsignedGreaterThanOrEqual,
- BinOp::Gt => IntCC::UnsignedGreaterThan,
- _ => unreachable!(),
- }, lhs_ptr, rhs_ptr);
-
- let extra_cmp = fx.bcx.ins().icmp(match bin_op {
- BinOp::Lt => IntCC::UnsignedLessThan,
- BinOp::Le => IntCC::UnsignedLessThanOrEqual,
- BinOp::Ge => IntCC::UnsignedGreaterThanOrEqual,
- BinOp::Gt => IntCC::UnsignedGreaterThan,
+ PlaceElem::Subslice { from, to, from_end } => {
+ // These indices are generated by slice patterns.
+ // slice[from:-to] in Python terms.
+
+ let from: u64 = from;
+ let to: u64 = to;
+
+ match cplace.layout().ty.kind() {
+ ty::Array(elem_ty, _len) => {
+ assert!(!from_end, "array subslices are never `from_end`");
+ let elem_layout = fx.layout_of(elem_ty);
+ let ptr = cplace.to_ptr();
+ cplace = CPlace::for_ptr(
+ ptr.offset_i64(fx, elem_layout.size.bytes() as i64 * (from as i64)),
+ fx.layout_of(fx.tcx.mk_array(elem_ty, u64::from(to) - u64::from(from))),
+ );
+ }
+ ty::Slice(elem_ty) => {
+ assert!(from_end, "slice subslices should be `from_end`");
+ let elem_layout = fx.layout_of(elem_ty);
+ let (ptr, len) = cplace.to_ptr_maybe_unsized();
+ let len = len.unwrap();
+ cplace = CPlace::for_ptr_with_extra(
+ ptr.offset_i64(fx, elem_layout.size.bytes() as i64 * (from as i64)),
+ fx.bcx.ins().iadd_imm(len, -(from as i64 + to as i64)),
+ cplace.layout(),
+ );
+ }
_ => unreachable!(),
- }, lhs_extra, rhs_extra);
-
- fx.bcx.ins().select(ptr_eq, extra_cmp, ptr_cmp)
- }
- _ => panic!("bin_op {:?} on ptr", bin_op),
- };
-
- assert_eq!(fx.tcx.types.bool, ret_ty);
- let ret_layout = fx.layout_of(ret_ty);
- CValue::by_val(fx.bcx.ins().bint(types::I8, res), ret_layout)
- }
-}
-
-pub fn trans_place<'a, 'tcx: 'a>(
- fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
- place: &Place<'tcx>,
-) -> CPlace<'tcx> {
- let base = match &place.base {
- PlaceBase::Local(local) => fx.get_local_place(*local),
- PlaceBase::Static(static_) => match static_.kind {
- StaticKind::Static(def_id) => {
- crate::constant::codegen_static_ref(fx, def_id, static_.ty)
- }
- StaticKind::Promoted(promoted) => {
- crate::constant::trans_promoted(fx, promoted, static_.ty)
- }
- }
- };
-
- trans_place_projection(fx, base, &place.projection)
-}
-
-pub fn trans_place_projection<'a, 'tcx: 'a>(
- fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
- base: CPlace<'tcx>,
- projection: &Option<Box<Projection<'tcx>>>,
-) -> CPlace<'tcx> {
- let projection = if let Some(projection) = projection {
- projection
- } else {
- return base;
- };
-
- let base = trans_place_projection(fx, base, &projection.base);
-
- match projection.elem {
- 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_scalar(fx);
- base.place_index(fx, index)
- }
- ProjectionElem::ConstantIndex {
- offset,
- min_length: _,
- 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 } => {
- // These indices are generated by slice patterns.
- // slice[from:-to] in Python terms.
-
- match base.layout().ty.sty {
- ty::Array(elem_ty, len) => {
- let elem_layout = fx.layout_of(elem_ty);
- let ptr = base.to_addr(fx);
- let len = crate::constant::force_eval_const(fx, len).unwrap_usize(fx.tcx);
- CPlace::for_addr(
- fx.bcx.ins().iadd_imm(ptr, elem_layout.size.bytes() as i64 * from as i64),
- fx.layout_of(fx.tcx.mk_array(elem_ty, len - from as u64 - to as u64)),
- )
}
- ty::Slice(elem_ty) => {
- let elem_layout = fx.layout_of(elem_ty);
- let (ptr, len) = base.to_addr_maybe_unsized(fx);
- let len = len.unwrap();
- CPlace::for_addr_with_extra(
- fx.bcx.ins().iadd_imm(ptr, elem_layout.size.bytes() as i64 * from as i64),
- fx.bcx.ins().iadd_imm(len, -(from as i64 + to as i64)),
- base.layout(),
- )
- }
- _ => unreachable!(),
+ }
+ PlaceElem::Downcast(_adt_def, variant) => {
+ cplace = cplace.downcast_variant(fx, variant);
}
}
- ProjectionElem::Downcast(_adt_def, variant) => base.downcast_variant(fx, variant),
}
+
+ cplace
}
-pub fn trans_operand<'a, 'tcx>(
- fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
+pub(crate) fn trans_operand<'tcx>(
+ fx: &mut FunctionCx<'_, 'tcx, impl Backend>,
operand: &Operand<'tcx>,
) -> CValue<'tcx> {
match operand {
Operand::Move(place) | Operand::Copy(place) => {
- let cplace = trans_place(fx, place);
+ let cplace = trans_place(fx, *place);
cplace.to_cvalue(fx)
}
Operand::Constant(const_) => crate::constant::trans_constant(fx, const_),
projects / rust.git / blobdiff