-use rustc_middle::ty::adjustment::PointerCast;
use rustc_index::vec::IndexVec;
+use rustc_middle::ty::adjustment::PointerCast;
use crate::prelude::*;
// Predefine blocks
let start_block = bcx.create_block();
- let block_map: IndexVec<BasicBlock, Block> = (0..mir.basic_blocks().len()).map(|_| bcx.create_block()).collect();
+ 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();
inline_asm_index: 0,
};
- let arg_uninhabited = fx.mir.args_iter().any(|arg| fx.layout_of(fx.monomorphize(&fx.mir.local_decls[arg].ty)).abi.is_uninhabited());
+ 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
+ .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));
+ tcx.sess.time("codegen prelude", || {
+ crate::abi::codegen_fn_prelude(&mut fx, start_block)
+ });
codegen_fn_content(&mut fx);
});
}
let context = &mut cx.cached_context;
context.func = func;
- crate::pretty_clif::write_clif_file(
- tcx,
- "unopt",
- None,
- instance,
- &context,
- &clif_comments,
- );
+ crate::pretty_clif::write_clif_file(tcx, "unopt", None, instance, &context, &clif_comments);
// Verify function
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);
+ crate::optimize::optimize_function(
+ tcx,
+ instance,
+ context,
+ &cold_blocks,
+ &mut clif_comments,
+ );
});
- // If the return block is not reachable, then the SSA builder may have inserted a `iconst.i128`
+ // 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();
// Define function
let module = &mut cx.module;
- tcx.sess.time(
- "define function",
- || module.define_function(
- func_id,
- context,
- &mut cranelift_codegen::binemit::NullTrapSink {},
- ).unwrap(),
- );
+ tcx.sess.time("define function", || {
+ module
+ .define_function(
+ func_id,
+ context,
+ &mut cranelift_codegen::binemit::NullTrapSink {},
+ )
+ .unwrap()
+ });
// Write optimized function to file for debugging
crate::pretty_clif::write_clif_file(
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);
+ debug_context.define_function(
+ instance,
+ func_id,
+ &name,
+ isa,
+ context,
+ &source_info_set,
+ local_map,
+ );
}
unwind_context.add_function(func_id, &context, isa);
});
context.clear();
}
-pub(crate) fn verify_func(tcx: TyCtxt<'_>, writer: &crate::pretty_clif::CommentWriter, func: &Function) {
+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) {
fx.bcx.switch_to_block(failure);
- let location = fx.get_caller_location(bb_data.terminator().source_info.span).load_scalar(fx);
+ let location = fx
+ .get_caller_location(bb_data.terminator().source_info.span)
+ .load_scalar(fx);
let args;
let lang_item = match msg {
let len = trans_operand(fx, len).load_scalar(fx);
let index = trans_operand(fx, index).load_scalar(fx);
args = [index, len, location];
- rustc_hir::lang_items::PanicBoundsCheckFnLangItem
+ 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());
+ 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::lang_items::PanicFnLangItem
+ rustc_hir::LangItem::Panic
}
};
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)
+ 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);
+ 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 block = fx.get_block(targets[i]);
- switch.set_entry(*value, block);
+
+ 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_block = fx.get_block(targets[targets.len() - 1]);
- switch.emit(&mut fx.bcx, discr, otherwise_block);
}
TerminatorKind::Call {
func,
cleanup: _,
from_hir_call: _,
} => {
- fx.tcx.sess.time("codegen call", || crate::abi::codegen_terminator_call(
- fx,
- *fn_span,
- block,
- func,
- args,
- *destination,
- ));
+ fx.tcx.sess.time("codegen call", || {
+ crate::abi::codegen_terminator_call(
+ fx,
+ *fn_span,
+ block,
+ func,
+ args,
+ *destination,
+ )
+ });
}
TerminatorKind::InlineAsm {
template,
fx.bcx.ins().jump(destination_block, &[]);
}
None => {
- crate::trap::trap_unreachable(fx, "[corruption] Returned from noreturn inline asm");
+ crate::trap::trap_unreachable(
+ fx,
+ "[corruption] Returned from noreturn inline asm",
+ );
}
}
}
fn trans_stmt<'tcx>(
fx: &mut FunctionCx<'_, 'tcx, impl Backend>,
- #[allow(unused_variables)]
- cur_block: Block,
+ #[allow(unused_variables)] cur_block: Block,
stmt: &Statement<'tcx>,
) {
let _print_guard = crate::PrintOnPanic(|| format!("stmt {:?}", stmt));
}
Rvalue::Ref(_, _, place) | Rvalue::AddressOf(_, place) => {
let place = trans_place(fx, *place);
- place.write_place_ref(fx, lval);
+ 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());
let layout = operand.layout();
let val = operand.load_scalar(fx);
let res = match un_op {
- 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)
- }
- ty::Uint(_) | ty::Int(_) => {
- CValue::by_val(fx.bcx.ins().bnot(val), layout)
- }
- _ => unreachable!("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.kind {
+ 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::Int(_) => {
- CValue::by_val(fx.bcx.ins().ineg(val), layout)
- }
- ty::Float(_) => {
- CValue::by_val(fx.bcx.ins().fneg(val), layout)
- }
+ 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),
},
};
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 {
+ match *from_ty.kind() {
ty::FnDef(def_id, substs) => {
let func_ref = fx.get_function_ref(
- Instance::resolve_for_fn_ptr(fx.tcx, ParamEnv::reveal_all(), def_id, substs)
- .unwrap()
- .polymorphize(fx.tcx),
+ 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, to_layout));
|ty::TypeAndMut {
ty: pointee_ty,
mutbl: _,
- }| has_ptr_meta(fx.tcx, pointee_ty),
+ }| {
+ has_ptr_meta(fx.tcx, pointee_ty)
+ },
)
.unwrap_or(false)
}
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.kind {
+ } else if let ty::Adt(adt_def, _substs) = from_ty.kind() {
// enum -> discriminant value
assert!(adt_def.is_enum());
- match to_ty.kind {
+ match to_ty.kind() {
ty::Uint(_) | ty::Int(_) => {}
_ => unreachable!("cast adt {} -> {}", from_ty, to_ty),
}
- use rustc_target::abi::{TagEncoding, Int, Variants};
+ 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 = 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)
+ rustc_middle::mir::interpret::sign_extend(
+ discr.val,
+ fx.layout_of(discr.ty).size,
+ )
} else {
discr.val
};
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 =
+ 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 val = CValue::by_val(val, dest_layout);
lval.write_cvalue(fx, val);
}
- Variants::Multiple { ..} => unreachable!(),
+ Variants::Multiple { .. } => unreachable!(),
}
} else {
let to_clif_ty = fx.clif_type(to_ty).unwrap();
lval.write_cvalue(fx, CValue::by_val(res, dest_layout));
}
}
- Rvalue::Cast(CastKind::Pointer(PointerCast::ClosureFnPointer(_)), operand, _to_ty) => {
+ Rvalue::Cast(
+ CastKind::Pointer(PointerCast::ClosureFnPointer(_)),
+ operand,
+ _to_ty,
+ ) => {
let operand = trans_operand(fx, operand);
- match operand.layout().ty.kind {
+ 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);
+ )
+ .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()));
.val
.try_to_bits(fx.tcx.data_layout.pointer_size)
.unwrap();
- for i in 0..times {
- let index = fx.bcx.ins().iconst(fx.pointer_type, i as i64);
+ 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) => {
lval.write_cvalue(fx, CValue::by_val(len, usize_layout));
}
Rvalue::NullaryOp(NullOp::Box, content_ty) => {
- use rustc_hir::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 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
.ty
.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());
+ 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 {
inputs,
} = &**asm;
let rustc_hir::LlvmInlineAsmInner {
- asm: asm_code, // Name
+ asm: asm_code, // Name
outputs: output_names, // Vec<LlvmInlineAsmOutput>
inputs: input_names, // Vec<Name>
- clobbers, // Vec<Name>
- volatile, // bool
- alignstack, // bool
+ clobbers, // Vec<Name>
+ volatile, // bool
+ alignstack, // bool
dialect: _,
asm_str_style: _,
} = asm;
// Black box
}
"mov %rbx, %rsi\n cpuid\n xchg %rbx, %rsi" => {
- assert_eq!(input_names, &[Symbol::intern("{eax}"), Symbol::intern("{ecx}")]);
+ 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() {
+ 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);
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);
+ 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)));
+ 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!(input_names, &[Symbol::intern("{ecx}")]);
crate::trap::trap_unimplemented(fx, "_xgetbv arch intrinsic is not supported");
}
// ___chkstk, ___chkstk_ms and __alloca are only used on Windows
- _ if fx.tcx.symbol_name(fx.instance).name.starts_with("___chkstk") => {
+ _ 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" => {
"int $$0x29" => {
crate::trap::trap_unimplemented(fx, "Windows abort");
}
- _ => fx.tcx.sess.span_fatal(stmt.source_info.span, "Inline assembly is not supported"),
+ _ => fx
+ .tcx
+ .sess
+ .span_fatal(stmt.source_info.span, "Inline assembly is not supported"),
}
}
+ StatementKind::Coverage { .. } => fx.tcx.sess.fatal("-Zcoverage is unimplemented"),
}
}
fx: &mut FunctionCx<'_, 'tcx, impl Backend>,
place: CPlace<'tcx>,
) -> Value {
- match place.layout().ty.kind {
+ match *place.layout().ty.kind() {
ty::Array(_elem_ty, len) => {
- let len = fx.monomorphize(&len)
+ 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)
min_length: _,
from_end,
} => {
+ let offset: u64 = offset;
let index = if !from_end {
- fx.bcx.ins().iconst(fx.pointer_type, i64::from(offset))
+ fx.bcx.ins().iconst(fx.pointer_type, offset as i64)
} else {
let len = codegen_array_len(fx, cplace);
- fx.bcx.ins().iadd_imm(len, -i64::from(offset))
+ fx.bcx.ins().iadd_imm(len, -(offset as i64))
};
cplace = cplace.place_index(fx, index);
}
// These indices are generated by slice patterns.
// slice[from:-to] in Python terms.
- match cplace.layout().ty.kind {
+ 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 * i64::from(from)),
+ 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))),
);
}
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 * i64::from(from)),
- fx.bcx.ins().iadd_imm(len, -(i64::from(from) + i64::from(to))),
+ 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(),
);
}