use crate::prelude::*;
-macro_rules! intrinsic_pat {
+use rustc::ty::subst::SubstsRef;
+
+macro intrinsic_pat {
(_) => {
_
- };
+ },
($name:ident) => {
stringify!($name)
+ },
+ ($name:literal) => {
+ stringify!($name)
+ },
+ ($x:ident . $($xs:tt).*) => {
+ concat!(stringify!($x), ".", intrinsic_pat!($($xs).*))
}
}
-macro_rules! intrinsic_arg {
- (c $fx:expr, $arg:ident) => {
+macro intrinsic_arg {
+ (o $fx:expr, $arg:ident) => {
$arg
- };
+ },
+ (c $fx:expr, $arg:ident) => {
+ trans_operand($fx, $arg)
+ },
(v $fx:expr, $arg:ident) => {
- $arg.load_value($fx)
- };
+ trans_operand($fx, $arg).load_scalar($fx)
+ }
}
-macro_rules! intrinsic_substs {
- ($substs:expr, $index:expr,) => {};
+macro intrinsic_substs {
+ ($substs:expr, $index:expr,) => {},
($substs:expr, $index:expr, $first:ident $(,$rest:ident)*) => {
let $first = $substs.type_at($index);
intrinsic_substs!($substs, $index+1, $($rest),*);
- };
+ }
}
-macro_rules! intrinsic_match {
- ($fx:expr, $intrinsic:expr, $substs:expr, $args:expr, $(
- $($name:tt)|+ $(if $cond:expr)?, $(<$($subst:ident),*>)? ($($a:ident $arg:ident),*) $content:block;
+pub macro intrinsic_match {
+ ($fx:expr, $intrinsic:expr, $substs:expr, $args:expr,
+ _ => $unknown:block;
+ $(
+ $($($name:tt).*)|+ $(if $cond:expr)?, $(<$($subst:ident),*>)? ($($a:ident $arg:ident),*) $content:block;
)*) => {
match $intrinsic {
$(
- $(intrinsic_pat!($name))|* $(if $cond)? => {
+ $(intrinsic_pat!($($name).*))|* $(if $cond)? => {
#[allow(unused_parens, non_snake_case)]
{
$(
intrinsic_substs!($substs, 0, $($subst),*);
)?
- if let [$($arg),*] = *$args {
- let ($($arg),*) = (
- $(intrinsic_arg!($a $fx, $arg)),*
+ if let [$($arg),*] = $args {
+ let ($($arg,)*) = (
+ $(intrinsic_arg!($a $fx, $arg),)*
);
#[warn(unused_parens, non_snake_case)]
{
}
}
)*
- _ => unimpl!("unsupported intrinsic {}", $intrinsic),
+ _ => $unknown,
}
- };
+ }
+}
+
+macro_rules! call_intrinsic_match {
+ ($fx:expr, $intrinsic:expr, $substs:expr, $ret:expr, $destination:expr, $args:expr, $(
+ $name:ident($($arg:ident),*) -> $ty:ident => $func:ident,
+ )*) => {
+ match $intrinsic {
+ $(
+ stringify!($name) => {
+ assert!($substs.is_noop());
+ if let [$(ref $arg),*] = *$args {
+ let ($($arg,)*) = (
+ $(trans_operand($fx, $arg),)*
+ );
+ let res = $fx.easy_call(stringify!($func), &[$($arg),*], $fx.tcx.types.$ty);
+ $ret.write_cvalue($fx, res);
+
+ if let Some((_, dest)) = $destination {
+ let ret_ebb = $fx.get_ebb(dest);
+ $fx.bcx.ins().jump(ret_ebb, &[]);
+ return;
+ } else {
+ unreachable!();
+ }
+ } else {
+ bug!("wrong number of args for intrinsic {:?}", $intrinsic);
+ }
+ }
+ )*
+ _ => {}
+ }
+ }
}
macro_rules! atomic_binop_return_old {
($fx:expr, $op:ident<$T:ident>($ptr:ident, $src:ident) -> $ret:ident) => {
let clif_ty = $fx.clif_type($T).unwrap();
let old = $fx.bcx.ins().load(clif_ty, MemFlags::new(), $ptr, 0);
- let new = $fx.bcx.ins().band(old, $src);
+ let new = $fx.bcx.ins().$op(old, $src);
$fx.bcx.ins().store(MemFlags::new(), new, $ptr, 0);
- $ret.write_cvalue($fx, CValue::ByVal(old, $fx.layout_of($T)));
+ $ret.write_cvalue($fx, CValue::by_val(old, $fx.layout_of($T)));
};
}
// Write new
$fx.bcx.ins().store(MemFlags::new(), new, $ptr, 0);
- let ret_val = CValue::ByVal(old, $ret.layout());
+ let ret_val = CValue::by_val(old, $ret.layout());
$ret.write_cvalue($fx, ret_val);
};
}
+pub fn lane_type_and_count<'tcx>(
+ fx: &FunctionCx<'_, 'tcx, impl Backend>,
+ layout: TyLayout<'tcx>,
+ intrinsic: &str,
+) -> (TyLayout<'tcx>, u32) {
+ assert!(layout.ty.is_simd());
+ let lane_count = match layout.fields {
+ layout::FieldPlacement::Array { stride: _, count } => u32::try_from(count).unwrap(),
+ _ => panic!("Non vector type {:?} passed to or returned from simd_* intrinsic {}", layout.ty, intrinsic),
+ };
+ let lane_layout = layout.field(fx, 0);
+ (lane_layout, lane_count)
+}
+
+pub fn simd_for_each_lane<'tcx, B: Backend>(
+ fx: &mut FunctionCx<'_, 'tcx, B>,
+ intrinsic: &str,
+ x: CValue<'tcx>,
+ y: CValue<'tcx>,
+ ret: CPlace<'tcx>,
+ f: impl Fn(&mut FunctionCx<'_, 'tcx, B>, TyLayout<'tcx>, TyLayout<'tcx>, Value, Value) -> CValue<'tcx>,
+) {
+ assert_eq!(x.layout(), y.layout());
+ let layout = x.layout();
+
+ let (lane_layout, lane_count) = lane_type_and_count(fx, layout, intrinsic);
+ let (ret_lane_layout, ret_lane_count) = lane_type_and_count(fx, ret.layout(), intrinsic);
+ assert_eq!(lane_count, ret_lane_count);
+
+ for lane in 0..lane_count {
+ let lane = mir::Field::new(lane.try_into().unwrap());
+ let x_lane = x.value_field(fx, lane).load_scalar(fx);
+ let y_lane = y.value_field(fx, lane).load_scalar(fx);
+
+ let res_lane = f(fx, lane_layout, ret_lane_layout, x_lane, y_lane);
+
+ ret.place_field(fx, lane).write_cvalue(fx, res_lane);
+ }
+}
+
+pub fn bool_to_zero_or_max_uint<'tcx>(
+ fx: &mut FunctionCx<'_, 'tcx, impl Backend>,
+ layout: TyLayout<'tcx>,
+ val: Value,
+) -> CValue<'tcx> {
+ let ty = fx.clif_type(layout.ty).unwrap();
+
+ let int_ty = match ty {
+ types::F32 => types::I32,
+ types::F64 => types::I64,
+ ty => ty,
+ };
+
+ let zero = fx.bcx.ins().iconst(int_ty, 0);
+ let max = fx.bcx.ins().iconst(int_ty, (u64::max_value() >> (64 - int_ty.bits())) as i64);
+ let mut res = crate::common::codegen_select(&mut fx.bcx, val, max, zero);
+
+ if ty.is_float() {
+ res = fx.bcx.ins().bitcast(ty, res);
+ }
+
+ CValue::by_val(res, layout)
+}
+
+macro_rules! simd_cmp {
+ ($fx:expr, $intrinsic:expr, $cc:ident($x:ident, $y:ident) -> $ret:ident) => {
+ simd_for_each_lane($fx, $intrinsic, $x, $y, $ret, |fx, lane_layout, res_lane_layout, x_lane, y_lane| {
+ let res_lane = match lane_layout.ty.sty {
+ ty::Uint(_) | ty::Int(_) => fx.bcx.ins().icmp(IntCC::$cc, x_lane, y_lane),
+ _ => unreachable!("{:?}", lane_layout.ty),
+ };
+ bool_to_zero_or_max_uint(fx, res_lane_layout, res_lane)
+ });
+ };
+ ($fx:expr, $intrinsic:expr, $cc_u:ident|$cc_s:ident($x:ident, $y:ident) -> $ret:ident) => {
+ simd_for_each_lane($fx, $intrinsic, $x, $y, $ret, |fx, lane_layout, res_lane_layout, x_lane, y_lane| {
+ let res_lane = match lane_layout.ty.sty {
+ ty::Uint(_) => fx.bcx.ins().icmp(IntCC::$cc_u, x_lane, y_lane),
+ ty::Int(_) => fx.bcx.ins().icmp(IntCC::$cc_s, x_lane, y_lane),
+ _ => unreachable!("{:?}", lane_layout.ty),
+ };
+ bool_to_zero_or_max_uint(fx, res_lane_layout, res_lane)
+ });
+ };
+
+}
+
+macro_rules! simd_int_binop {
+ ($fx:expr, $intrinsic:expr, $op:ident($x:ident, $y:ident) -> $ret:ident) => {
+ simd_for_each_lane($fx, $intrinsic, $x, $y, $ret, |fx, lane_layout, ret_lane_layout, x_lane, y_lane| {
+ let res_lane = match lane_layout.ty.sty {
+ ty::Uint(_) | ty::Int(_) => fx.bcx.ins().$op(x_lane, y_lane),
+ _ => unreachable!("{:?}", lane_layout.ty),
+ };
+ CValue::by_val(res_lane, ret_lane_layout)
+ });
+ };
+ ($fx:expr, $intrinsic:expr, $op_u:ident|$op_s:ident($x:ident, $y:ident) -> $ret:ident) => {
+ simd_for_each_lane($fx, $intrinsic, $x, $y, $ret, |fx, lane_layout, ret_lane_layout, x_lane, y_lane| {
+ let res_lane = match lane_layout.ty.sty {
+ ty::Uint(_) => fx.bcx.ins().$op_u(x_lane, y_lane),
+ ty::Int(_) => fx.bcx.ins().$op_s(x_lane, y_lane),
+ _ => unreachable!("{:?}", lane_layout.ty),
+ };
+ CValue::by_val(res_lane, ret_lane_layout)
+ });
+ };
+}
+
+macro_rules! simd_int_flt_binop {
+ ($fx:expr, $intrinsic:expr, $op:ident|$op_f:ident($x:ident, $y:ident) -> $ret:ident) => {
+ simd_for_each_lane($fx, $intrinsic, $x, $y, $ret, |fx, lane_layout, ret_lane_layout, x_lane, y_lane| {
+ let res_lane = match lane_layout.ty.sty {
+ ty::Uint(_) | ty::Int(_) => fx.bcx.ins().$op(x_lane, y_lane),
+ ty::Float(_) => fx.bcx.ins().$op_f(x_lane, y_lane),
+ _ => unreachable!("{:?}", lane_layout.ty),
+ };
+ CValue::by_val(res_lane, ret_lane_layout)
+ });
+ };
+ ($fx:expr, $intrinsic:expr, $op_u:ident|$op_s:ident|$op_f:ident($x:ident, $y:ident) -> $ret:ident) => {
+ simd_for_each_lane($fx, $intrinsic, $x, $y, $ret, |fx, lane_layout, ret_lane_layout, x_lane, y_lane| {
+ let res_lane = match lane_layout.ty.sty {
+ ty::Uint(_) => fx.bcx.ins().$op_u(x_lane, y_lane),
+ ty::Int(_) => fx.bcx.ins().$op_s(x_lane, y_lane),
+ ty::Float(_) => fx.bcx.ins().$op_f(x_lane, y_lane),
+ _ => unreachable!("{:?}", lane_layout.ty),
+ };
+ CValue::by_val(res_lane, ret_lane_layout)
+ });
+ };
+}
+
+macro_rules! simd_flt_binop {
+ ($fx:expr, $intrinsic:expr, $op:ident($x:ident, $y:ident) -> $ret:ident) => {
+ simd_for_each_lane($fx, $intrinsic, $x, $y, $ret, |fx, lane_layout, ret_lane_layout, x_lane, y_lane| {
+ let res_lane = match lane_layout.ty.sty {
+ ty::Float(_) => fx.bcx.ins().$op(x_lane, y_lane),
+ _ => unreachable!("{:?}", lane_layout.ty),
+ };
+ CValue::by_val(res_lane, ret_lane_layout)
+ });
+ }
+}
+
pub fn codegen_intrinsic_call<'a, 'tcx: 'a>(
fx: &mut FunctionCx<'a, 'tcx, impl Backend>,
def_id: DefId,
- substs: &'tcx Substs,
- args: Vec<CValue<'tcx>>,
+ substs: SubstsRef<'tcx>,
+ args: &[mir::Operand<'tcx>],
destination: Option<(CPlace<'tcx>, BasicBlock)>,
) {
let intrinsic = fx.tcx.item_name(def_id).as_str();
// Insert non returning intrinsics here
match intrinsic {
"abort" => {
- trap_panic(&mut fx.bcx);
+ trap_panic(fx, "Called intrinsic::abort.");
}
"unreachable" => {
- trap_unreachable(&mut fx.bcx);
+ trap_unreachable(fx, "[corruption] Called intrinsic::unreachable.");
}
_ => unimplemented!("unsupported instrinsic {}", intrinsic),
}
let u64_layout = fx.layout_of(fx.tcx.types.u64);
let usize_layout = fx.layout_of(fx.tcx.types.usize);
+ call_intrinsic_match! {
+ fx, intrinsic, substs, ret, destination, args,
+ expf32(flt) -> f32 => expf,
+ expf64(flt) -> f64 => exp,
+ exp2f32(flt) -> f32 => exp2f,
+ exp2f64(flt) -> f64 => exp2,
+ sqrtf32(flt) -> f32 => sqrtf,
+ sqrtf64(flt) -> f64 => sqrt,
+ powif32(a, x) -> f32 => __powisf2, // compiler-builtins
+ powif64(a, x) -> f64 => __powidf2, // compiler-builtins
+ logf32(flt) -> f32 => logf,
+ logf64(flt) -> f64 => log,
+ fabsf32(flt) -> f32 => fabsf,
+ fabsf64(flt) -> f64 => fabs,
+ fmaf32(x, y, z) -> f32 => fmaf,
+ fmaf64(x, y, z) -> f64 => fma,
+
+ // rounding variants
+ floorf32(flt) -> f32 => floorf,
+ floorf64(flt) -> f64 => floor,
+ ceilf32(flt) -> f32 => ceilf,
+ ceilf64(flt) -> f64 => ceil,
+ truncf32(flt) -> f32 => truncf,
+ truncf64(flt) -> f64 => trunc,
+ roundf32(flt) -> f32 => roundf,
+ roundf64(flt) -> f64 => round,
+
+ // trigonometry
+ sinf32(flt) -> f32 => sinf,
+ sinf64(flt) -> f64 => sin,
+ cosf32(flt) -> f32 => cosf,
+ cosf64(flt) -> f64 => cos,
+ tanf32(flt) -> f32 => tanf,
+ tanf64(flt) -> f64 => tan,
+ }
+
intrinsic_match! {
fx, intrinsic, substs, args,
+ _ => {
+ unimpl!("unsupported intrinsic {}", intrinsic)
+ };
assume, (c _a) {};
- arith_offset, (v base, v offset) {
- let res = fx.bcx.ins().iadd(base, offset);
- let res = CValue::ByVal(res, ret.layout());
- ret.write_cvalue(fx, res);
- };
likely | unlikely, (c a) {
ret.write_cvalue(fx, a);
};
+ breakpoint, () {
+ fx.bcx.ins().debugtrap();
+ };
copy | copy_nonoverlapping, <elem_ty> (v src, v dst, v count) {
let elem_size: u64 = fx.layout_of(elem_ty).size.bytes();
let elem_size = fx
}
};
discriminant_value, (c val) {
- let discr = crate::base::trans_get_discriminant(fx, val, ret.layout());
+ let pointee_layout = fx.layout_of(val.layout().ty.builtin_deref(true).unwrap().ty);
+ let place = CPlace::for_addr(val.load_scalar(fx), pointee_layout);
+ let discr = crate::base::trans_get_discriminant(fx, place, ret.layout());
ret.write_cvalue(fx, discr);
};
size_of, <T> () {
let size_of = fx.layout_of(T).size.bytes();
- let size_of = CValue::const_val(fx, usize_layout.ty, size_of as i64);
+ let size_of = CValue::const_val(fx, usize_layout.ty, size_of.into());
ret.write_cvalue(fx, size_of);
};
size_of_val, <T> (c ptr) {
let layout = fx.layout_of(T);
let size = if layout.is_unsized() {
- let (_ptr, info) = ptr.load_value_pair(fx);
+ let (_ptr, info) = ptr.load_scalar_pair(fx);
let (size, _align) = crate::unsize::size_and_align_of_dst(fx, layout.ty, info);
size
} else {
.ins()
.iconst(fx.pointer_type, layout.size.bytes() as i64)
};
- ret.write_cvalue(fx, CValue::ByVal(size, usize_layout));
+ ret.write_cvalue(fx, CValue::by_val(size, usize_layout));
};
min_align_of, <T> () {
let min_align = fx.layout_of(T).align.abi.bytes();
- let min_align = CValue::const_val(fx, usize_layout.ty, min_align as i64);
+ let min_align = CValue::const_val(fx, usize_layout.ty, min_align.into());
ret.write_cvalue(fx, min_align);
};
min_align_of_val, <T> (c ptr) {
let layout = fx.layout_of(T);
let align = if layout.is_unsized() {
- let (_ptr, info) = ptr.load_value_pair(fx);
+ let (_ptr, info) = ptr.load_scalar_pair(fx);
let (_size, align) = crate::unsize::size_and_align_of_dst(fx, layout.ty, info);
align
} else {
.ins()
.iconst(fx.pointer_type, layout.align.abi.bytes() as i64)
};
- ret.write_cvalue(fx, CValue::ByVal(align, usize_layout));
+ ret.write_cvalue(fx, CValue::by_val(align, usize_layout));
};
+ pref_align_of, <T> () {
+ let pref_align = fx.layout_of(T).align.pref.bytes();
+ let pref_align = CValue::const_val(fx, usize_layout.ty, pref_align.into());
+ ret.write_cvalue(fx, pref_align);
+ };
+
+
type_id, <T> () {
let type_id = fx.tcx.type_id_hash(T);
- let type_id = CValue::const_val(fx, u64_layout.ty, type_id as i64);
+ let type_id = CValue::const_val(fx, u64_layout.ty, type_id.into());
ret.write_cvalue(fx, type_id);
};
+ type_name, <T> () {
+ let type_name = fx.tcx.type_name(T);
+ let type_name = crate::constant::trans_const_value(fx, type_name);
+ ret.write_cvalue(fx, type_name);
+ };
+
_ if intrinsic.starts_with("unchecked_") || intrinsic == "exact_div", (c x, c y) {
+ // FIXME trap on overflow
let bin_op = match intrinsic {
+ "unchecked_sub" => BinOp::Sub,
"unchecked_div" | "exact_div" => BinOp::Div,
"unchecked_rem" => BinOp::Rem,
"unchecked_shl" => BinOp::Shl,
};
ret.write_cvalue(fx, res);
};
+ _ if intrinsic.starts_with("saturating_"), <T> (c x, c y) {
+ // FIXME implement saturating behavior
+ assert_eq!(x.layout().ty, y.layout().ty);
+ let bin_op = match intrinsic {
+ "saturating_add" => BinOp::Add,
+ "saturating_sub" => BinOp::Sub,
+ "saturating_mul" => BinOp::Mul,
+ _ => unimplemented!("intrinsic {}", intrinsic),
+ };
+ let res = match T.sty {
+ ty::Uint(_) => crate::base::trans_int_binop(
+ fx,
+ bin_op,
+ x,
+ y,
+ ret.layout().ty,
+ false,
+ ),
+ ty::Int(_) => crate::base::trans_int_binop(
+ fx,
+ bin_op,
+ x,
+ y,
+ ret.layout().ty,
+ true,
+ ),
+ _ => panic!(),
+ };
+ ret.write_cvalue(fx, res);
+ };
rotate_left, <T>(v x, v y) {
let layout = fx.layout_of(T);
let res = fx.bcx.ins().rotl(x, y);
- ret.write_cvalue(fx, CValue::ByVal(res, layout));
+ ret.write_cvalue(fx, CValue::by_val(res, layout));
};
rotate_right, <T>(v x, v y) {
let layout = fx.layout_of(T);
let res = fx.bcx.ins().rotr(x, y);
- ret.write_cvalue(fx, CValue::ByVal(res, layout));
+ ret.write_cvalue(fx, CValue::by_val(res, layout));
};
- offset, (v base, v offset) {
- let res = fx.bcx.ins().iadd(base, offset);
- ret.write_cvalue(fx, CValue::ByVal(res, args[0].layout()));
+
+ // The only difference between offset and arith_offset is regarding UB. Because Cranelift
+ // doesn't have UB both are codegen'ed the same way
+ offset | arith_offset, (c base, v offset) {
+ 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);
+ ret.write_cvalue(fx, CValue::by_val(res, base.layout()));
};
+
transmute, <src_ty, dst_ty> (c from) {
assert_eq!(from.layout().ty, src_ty);
let addr = from.force_stack(fx);
let dst_layout = fx.layout_of(dst_ty);
- ret.write_cvalue(fx, CValue::ByRef(addr, dst_layout))
+ ret.write_cvalue(fx, CValue::by_ref(addr, dst_layout))
};
- init, <T> () {
- let layout = fx.layout_of(T);
- let stack_slot = fx.bcx.create_stack_slot(StackSlotData {
- kind: StackSlotKind::ExplicitSlot,
- size: layout.size.bytes() as u32,
- offset: None,
- });
- let addr = fx.bcx.ins().stack_addr(pointer_ty(fx.tcx), stack_slot, 0);
- let zero_val = fx.bcx.ins().iconst(types::I8, 0);
- let len_val = fx.bcx.ins().iconst(pointer_ty(fx.tcx), layout.size.bytes() as i64);
- fx.bcx.call_memset(fx.module.target_config(), addr, zero_val, len_val);
-
- let uninit_place = CPlace::from_stack_slot(fx, stack_slot, T);
- let uninit_val = uninit_place.to_cvalue(fx);
- ret.write_cvalue(fx, uninit_val);
- };
- write_bytes, (v dst, v val, v count) {
- fx.bcx.call_memset(fx.module.target_config(), dst, val, count);
- };
- uninit, <T> () {
- let layout = fx.layout_of(T);
- let stack_slot = fx.bcx.create_stack_slot(StackSlotData {
- kind: StackSlotKind::ExplicitSlot,
- size: layout.size.bytes() as u32,
- offset: None,
- });
+ init, () {
+ if ret.layout().abi == Abi::Uninhabited {
+ crate::trap::trap_panic(fx, "[panic] Called intrinsic::init for uninhabited type.");
+ return;
+ }
- let uninit_place = CPlace::from_stack_slot(fx, stack_slot, T);
- let uninit_val = uninit_place.to_cvalue(fx);
- ret.write_cvalue(fx, uninit_val);
+ match ret {
+ CPlace::NoPlace(_layout) => {}
+ CPlace::Var(var, layout) => {
+ let clif_ty = fx.clif_type(layout.ty).unwrap();
+ let val = match clif_ty {
+ types::I8 | types::I16 | types::I32 | types::I64 => fx.bcx.ins().iconst(clif_ty, 0),
+ types::F32 => {
+ let zero = fx.bcx.ins().iconst(types::I32, 0);
+ fx.bcx.ins().bitcast(types::F32, zero)
+ }
+ types::F64 => {
+ let zero = fx.bcx.ins().iconst(types::I64, 0);
+ fx.bcx.ins().bitcast(types::F64, zero)
+ }
+ _ => panic!("clif_type returned {}", clif_ty),
+ };
+ fx.bcx.def_var(mir_var(var), val);
+ }
+ _ => {
+ let addr = ret.to_addr(fx);
+ let layout = ret.layout();
+ fx.bcx.emit_small_memset(fx.module.target_config(), addr, 0, layout.size.bytes(), 1);
+ }
+ }
+ };
+ write_bytes, (c dst, v val, v count) {
+ let pointee_ty = dst.layout().ty.builtin_deref(true).unwrap().ty;
+ let pointee_size = fx.layout_of(pointee_ty).size.bytes();
+ let count = fx.bcx.ins().imul_imm(count, pointee_size as i64);
+ let dst_ptr = dst.load_scalar(fx);
+ fx.bcx.call_memset(fx.module.target_config(), dst_ptr, val, count);
};
ctlz | ctlz_nonzero, <T> (v arg) {
- let res = CValue::ByVal(fx.bcx.ins().clz(arg), fx.layout_of(T));
+ let res = if T == fx.tcx.types.u128 || T == fx.tcx.types.i128 {
+ // FIXME verify this algorithm is correct
+ let (lsb, msb) = fx.bcx.ins().isplit(arg);
+ let lsb_lz = fx.bcx.ins().clz(lsb);
+ let msb_lz = fx.bcx.ins().clz(msb);
+ let msb_is_zero = fx.bcx.ins().icmp_imm(IntCC::Equal, msb, 0);
+ let lsb_lz_plus_64 = fx.bcx.ins().iadd_imm(lsb_lz, 64);
+ fx.bcx.ins().select(msb_is_zero, lsb_lz_plus_64, msb_lz)
+ } else {
+ fx.bcx.ins().clz(arg)
+ };
+ let res = CValue::by_val(res, fx.layout_of(T));
ret.write_cvalue(fx, res);
};
cttz | cttz_nonzero, <T> (v arg) {
- let res = CValue::ByVal(fx.bcx.ins().clz(arg), fx.layout_of(T));
+ let res = if T == fx.tcx.types.u128 || T == fx.tcx.types.i128 {
+ // FIXME verify this algorithm is correct
+ let (lsb, msb) = fx.bcx.ins().isplit(arg);
+ let lsb_tz = fx.bcx.ins().ctz(lsb);
+ let msb_tz = fx.bcx.ins().ctz(msb);
+ let lsb_is_zero = fx.bcx.ins().icmp_imm(IntCC::Equal, lsb, 0);
+ let msb_tz_plus_64 = fx.bcx.ins().iadd_imm(msb_tz, 64);
+ fx.bcx.ins().select(lsb_is_zero, msb_tz_plus_64, lsb_tz)
+ } else {
+ fx.bcx.ins().ctz(arg)
+ };
+ let res = CValue::by_val(res, fx.layout_of(T));
ret.write_cvalue(fx, res);
};
ctpop, <T> (v arg) {
- let res = CValue::ByVal(fx.bcx.ins().popcnt(arg), fx.layout_of(T));
+ let res = CValue::by_val(fx.bcx.ins().popcnt(arg), fx.layout_of(T));
ret.write_cvalue(fx, res);
};
bitreverse, <T> (v arg) {
- let res = CValue::ByVal(fx.bcx.ins().bitrev(arg), fx.layout_of(T));
+ let res = CValue::by_val(fx.bcx.ins().bitrev(arg), fx.layout_of(T));
+ ret.write_cvalue(fx, res);
+ };
+ bswap, <T> (v arg) {
+ // FIXME(CraneStation/cranelift#794) add bswap instruction to cranelift
+ fn swap(bcx: &mut FunctionBuilder, v: Value) -> Value {
+ match bcx.func.dfg.value_type(v) {
+ types::I8 => v,
+
+ // https://code.woboq.org/gcc/include/bits/byteswap.h.html
+ types::I16 => {
+ let tmp1 = bcx.ins().ishl_imm(v, 8);
+ let n1 = bcx.ins().band_imm(tmp1, 0xFF00);
+
+ let tmp2 = bcx.ins().ushr_imm(v, 8);
+ let n2 = bcx.ins().band_imm(tmp2, 0x00FF);
+
+ bcx.ins().bor(n1, n2)
+ }
+ types::I32 => {
+ let tmp1 = bcx.ins().ishl_imm(v, 24);
+ let n1 = bcx.ins().band_imm(tmp1, 0xFF00_0000);
+
+ let tmp2 = bcx.ins().ishl_imm(v, 8);
+ let n2 = bcx.ins().band_imm(tmp2, 0x00FF_0000);
+
+ let tmp3 = bcx.ins().ushr_imm(v, 8);
+ let n3 = bcx.ins().band_imm(tmp3, 0x0000_FF00);
+
+ let tmp4 = bcx.ins().ushr_imm(v, 24);
+ let n4 = bcx.ins().band_imm(tmp4, 0x0000_00FF);
+
+ let or_tmp1 = bcx.ins().bor(n1, n2);
+ let or_tmp2 = bcx.ins().bor(n3, n4);
+ bcx.ins().bor(or_tmp1, or_tmp2)
+ }
+ types::I64 => {
+ let tmp1 = bcx.ins().ishl_imm(v, 56);
+ let n1 = bcx.ins().band_imm(tmp1, 0xFF00_0000_0000_0000u64 as i64);
+
+ let tmp2 = bcx.ins().ishl_imm(v, 40);
+ let n2 = bcx.ins().band_imm(tmp2, 0x00FF_0000_0000_0000u64 as i64);
+
+ let tmp3 = bcx.ins().ishl_imm(v, 24);
+ let n3 = bcx.ins().band_imm(tmp3, 0x0000_FF00_0000_0000u64 as i64);
+
+ let tmp4 = bcx.ins().ishl_imm(v, 8);
+ let n4 = bcx.ins().band_imm(tmp4, 0x0000_00FF_0000_0000u64 as i64);
+
+ let tmp5 = bcx.ins().ushr_imm(v, 8);
+ let n5 = bcx.ins().band_imm(tmp5, 0x0000_0000_FF00_0000u64 as i64);
+
+ let tmp6 = bcx.ins().ushr_imm(v, 24);
+ let n6 = bcx.ins().band_imm(tmp6, 0x0000_0000_00FF_0000u64 as i64);
+
+ let tmp7 = bcx.ins().ushr_imm(v, 40);
+ let n7 = bcx.ins().band_imm(tmp7, 0x0000_0000_0000_FF00u64 as i64);
+
+ let tmp8 = bcx.ins().ushr_imm(v, 56);
+ let n8 = bcx.ins().band_imm(tmp8, 0x0000_0000_0000_00FFu64 as i64);
+
+ let or_tmp1 = bcx.ins().bor(n1, n2);
+ let or_tmp2 = bcx.ins().bor(n3, n4);
+ let or_tmp3 = bcx.ins().bor(n5, n6);
+ let or_tmp4 = bcx.ins().bor(n7, n8);
+
+ let or_tmp5 = bcx.ins().bor(or_tmp1, or_tmp2);
+ let or_tmp6 = bcx.ins().bor(or_tmp3, or_tmp4);
+ bcx.ins().bor(or_tmp5, or_tmp6)
+ }
+ types::I128 => {
+ let (lo, hi) = bcx.ins().isplit(v);
+ let lo = swap(bcx, lo);
+ let hi = swap(bcx, hi);
+ bcx.ins().iconcat(hi, lo)
+ }
+ ty => unimplemented!("bswap {}", ty),
+ }
+ };
+ let res = CValue::by_val(swap(&mut fx.bcx, arg), fx.layout_of(T));
ret.write_cvalue(fx, res);
};
needs_drop, <T> () {
let needs_drop = CValue::const_val(fx, fx.tcx.types.bool, needs_drop);
ret.write_cvalue(fx, needs_drop);
};
+ panic_if_uninhabited, <T> () {
+ if fx.layout_of(T).abi.is_uninhabited() {
+ crate::trap::trap_panic(fx, "[panic] Called intrinsic::panic_if_uninhabited for uninhabited type.");
+ return;
+ }
+ };
+
+ volatile_load, (c ptr) {
+ // Cranelift treats loads as volatile by default
+ let inner_layout =
+ fx.layout_of(ptr.layout().ty.builtin_deref(true).unwrap().ty);
+ let val = CValue::by_ref(ptr.load_scalar(fx), inner_layout);
+ ret.write_cvalue(fx, val);
+ };
+ volatile_store, (v ptr, c val) {
+ // Cranelift treats stores as volatile by default
+ let dest = CPlace::for_addr(ptr, val.layout());
+ dest.write_cvalue(fx, val);
+ };
_ if intrinsic.starts_with("atomic_fence"), () {};
_ if intrinsic.starts_with("atomic_singlethreadfence"), () {};
_ if intrinsic.starts_with("atomic_load"), (c ptr) {
let inner_layout =
fx.layout_of(ptr.layout().ty.builtin_deref(true).unwrap().ty);
- let val = CValue::ByRef(ptr.load_value(fx), inner_layout);
+ let val = CValue::by_ref(ptr.load_scalar(fx), inner_layout);
ret.write_cvalue(fx, val);
};
_ if intrinsic.starts_with("atomic_store"), (v ptr, c val) {
- let dest = CPlace::Addr(ptr, None, val.layout());
+ let dest = CPlace::for_addr(ptr, val.layout());
dest.write_cvalue(fx, val);
};
_ if intrinsic.starts_with("atomic_xchg"), <T> (v ptr, c src) {
// Read old
let clif_ty = fx.clif_type(T).unwrap();
let old = fx.bcx.ins().load(clif_ty, MemFlags::new(), ptr, 0);
- ret.write_cvalue(fx, CValue::ByVal(old, fx.layout_of(T)));
+ ret.write_cvalue(fx, CValue::by_val(old, fx.layout_of(T)));
// Write new
- let dest = CPlace::Addr(ptr, None, src.layout());
+ let dest = CPlace::for_addr(ptr, src.layout());
dest.write_cvalue(fx, src);
};
_ if intrinsic.starts_with("atomic_cxchg"), <T> (v ptr, v test_old, v new) { // both atomic_cxchg_* and atomic_cxchgweak_*
// Compare
let is_eq = fx.bcx.ins().icmp(IntCC::Equal, old, test_old);
- let new = crate::common::codegen_select(&mut fx.bcx, is_eq, old, new); // Keep old if not equal to test_old
+ let new = crate::common::codegen_select(&mut fx.bcx, is_eq, new, old); // Keep old if not equal to test_old
// Write new
fx.bcx.ins().store(MemFlags::new(), new, ptr, 0);
- let ret_val = CValue::ByValPair(old, fx.bcx.ins().bint(types::I8, is_eq), ret.layout());
+ let ret_val = CValue::by_val_pair(old, fx.bcx.ins().bint(types::I8, is_eq), ret.layout());
ret.write_cvalue(fx, ret_val);
};
atomic_binop_return_old! (fx, band<T>(ptr, src) -> ret);
};
_ if intrinsic.starts_with("atomic_nand"), <T> (v ptr, v src) {
- atomic_binop_return_old! (fx, bnand<T>(ptr, src) -> ret);
+ atomic_binop_return_old! (fx, band_not<T>(ptr, src) -> ret);
};
_ if intrinsic.starts_with("atomic_or"), <T> (v ptr, v src) {
atomic_binop_return_old! (fx, bor<T>(ptr, src) -> ret);
_ if intrinsic.starts_with("atomic_umin"), <T> (v ptr, v src) {
atomic_minmax!(fx, IntCC::UnsignedLessThan, <T> (ptr, src) -> ret);
};
+
+ minnumf32, (v a, v b) {
+ let val = fx.bcx.ins().fmin(a, b);
+ let val = CValue::by_val(val, fx.layout_of(fx.tcx.types.f32));
+ ret.write_cvalue(fx, val);
+ };
+ minnumf64, (v a, v b) {
+ let val = fx.bcx.ins().fmin(a, b);
+ let val = CValue::by_val(val, fx.layout_of(fx.tcx.types.f64));
+ ret.write_cvalue(fx, val);
+ };
+ maxnumf32, (v a, v b) {
+ let val = fx.bcx.ins().fmax(a, b);
+ let val = CValue::by_val(val, fx.layout_of(fx.tcx.types.f32));
+ ret.write_cvalue(fx, val);
+ };
+ maxnumf64, (v a, v b) {
+ let val = fx.bcx.ins().fmax(a, b);
+ let val = CValue::by_val(val, fx.layout_of(fx.tcx.types.f64));
+ ret.write_cvalue(fx, val);
+ };
+
+ simd_cast, (c x) {
+ ret.write_cvalue(fx, x.unchecked_cast_to(ret.layout()));
+ };
+
+ simd_eq, (c x, c y) {
+ simd_cmp!(fx, intrinsic, Equal(x, y) -> ret);
+ };
+ simd_ne, (c x, c y) {
+ simd_cmp!(fx, intrinsic, NotEqual(x, y) -> ret);
+ };
+ simd_lt, (c x, c y) {
+ simd_cmp!(fx, intrinsic, UnsignedLessThan|SignedLessThan(x, y) -> ret);
+ };
+ simd_le, (c x, c y) {
+ simd_cmp!(fx, intrinsic, UnsignedLessThanOrEqual|SignedLessThanOrEqual(x, y) -> ret);
+ };
+ simd_gt, (c x, c y) {
+ simd_cmp!(fx, intrinsic, UnsignedGreaterThan|SignedGreaterThan(x, y) -> ret);
+ };
+ simd_ge, (c x, c y) {
+ simd_cmp!(fx, intrinsic, UnsignedGreaterThanOrEqual|SignedGreaterThanOrEqual(x, y) -> ret);
+ };
+
+ // simd_shuffle32<T, U>(x: T, y: T, idx: [u32; 32]) -> U
+ _ if intrinsic.starts_with("simd_shuffle"), (c x, c y, o idx) {
+ let n: u32 = intrinsic["simd_shuffle".len()..].parse().unwrap();
+
+ assert_eq!(x.layout(), y.layout());
+ let layout = x.layout();
+
+ let (lane_type, lane_count) = lane_type_and_count(fx, layout, intrinsic);
+ let (ret_lane_type, ret_lane_count) = lane_type_and_count(fx, ret.layout(), intrinsic);
+
+ assert_eq!(lane_type, ret_lane_type);
+ assert_eq!(n, ret_lane_count);
+
+ let total_len = lane_count * 2;
+
+ let indexes = {
+ use rustc::mir::interpret::*;
+ let idx_const = crate::constant::mir_operand_get_const_val(fx, idx).expect("simd_shuffle* idx not const");
+
+ let idx_bytes = match idx_const.val {
+ ConstValue::ByRef { align: _, offset, alloc } => {
+ let ptr = Pointer::new(AllocId(0 /* dummy */), offset);
+ let size = Size::from_bytes(4 * u64::from(ret_lane_count) /* size_of([u32; ret_lane_count]) */);
+ alloc.get_bytes(fx, ptr, size).unwrap()
+ }
+ _ => unreachable!("{:?}", idx_const),
+ };
+
+ (0..ret_lane_count).map(|i| {
+ let i = usize::try_from(i).unwrap();
+ let idx = rustc::mir::interpret::read_target_uint(
+ fx.tcx.data_layout.endian,
+ &idx_bytes[4*i.. 4*i + 4],
+ ).expect("read_target_uint");
+ u32::try_from(idx).expect("try_from u32")
+ }).collect::<Vec<u32>>()
+ };
+
+ for &idx in &indexes {
+ assert!(idx < total_len, "idx {} out of range 0..{}", idx, total_len);
+ }
+
+ for (out_idx, in_idx) in indexes.into_iter().enumerate() {
+ let in_lane = if in_idx < lane_count {
+ x.value_field(fx, mir::Field::new(in_idx.try_into().unwrap()))
+ } else {
+ y.value_field(fx, mir::Field::new((in_idx - lane_count).try_into().unwrap()))
+ };
+ let out_lane = ret.place_field(fx, mir::Field::new(out_idx));
+ out_lane.write_cvalue(fx, in_lane);
+ }
+ };
+
+ simd_add, (c x, c y) {
+ simd_int_flt_binop!(fx, intrinsic, iadd|fadd(x, y) -> ret);
+ };
+ simd_sub, (c x, c y) {
+ simd_int_flt_binop!(fx, intrinsic, isub|fsub(x, y) -> ret);
+ };
+ simd_mul, (c x, c y) {
+ simd_int_flt_binop!(fx, intrinsic, imul|fmul(x, y) -> ret);
+ };
+ simd_div, (c x, c y) {
+ simd_int_flt_binop!(fx, intrinsic, udiv|sdiv|fdiv(x, y) -> ret);
+ };
+ simd_shl, (c x, c y) {
+ simd_int_binop!(fx, intrinsic, ishl(x, y) -> ret);
+ };
+ simd_shr, (c x, c y) {
+ simd_int_binop!(fx, intrinsic, ushr|sshr(x, y) -> ret);
+ };
+ simd_and, (c x, c y) {
+ simd_int_binop!(fx, intrinsic, band(x, y) -> ret);
+ };
+ simd_or, (c x, c y) {
+ simd_int_binop!(fx, intrinsic, bor(x, y) -> ret);
+ };
+ simd_xor, (c x, c y) {
+ simd_int_binop!(fx, intrinsic, bxor(x, y) -> ret);
+ };
+
+ simd_fmin, (c x, c y) {
+ simd_flt_binop!(fx, intrinsic, fmin(x, y) -> ret);
+ };
+ simd_fmax, (c x, c y) {
+ simd_flt_binop!(fx, intrinsic, fmax(x, y) -> ret);
+ };
}
if let Some((_, dest)) = destination {
let ret_ebb = fx.get_ebb(dest);
fx.bcx.ins().jump(ret_ebb, &[]);
} else {
- trap_unreachable(&mut fx.bcx);
+ trap_unreachable(fx, "[corruption] Diverging intrinsic returned.");
}
}
projects / rust.git / blobdiff