.map(|(i, ty)| arg_of(ty, Some(i)))
.collect(),
c_variadic: sig.c_variadic,
+ fixed_count: inputs.len(),
conv,
};
fn_abi.adjust_for_abi(cx, sig.abi);
reg_ctor!(i16, Integer, 16);
reg_ctor!(i32, Integer, 32);
reg_ctor!(i64, Integer, 64);
+ reg_ctor!(i128, Integer, 128);
reg_ctor!(f32, Float, 32);
reg_ctor!(f64, Float, 64);
pub c_variadic: bool,
+ /// The count of non-variadic arguments.
+ ///
+ /// Should only be different from args.len() when c_variadic is true.
+ /// This can be used to know wether an argument is variadic or not.
+ pub fixed_count: usize,
+
pub conv: Conv,
}
"nvptx" => nvptx::compute_abi_info(self),
"nvptx64" => nvptx64::compute_abi_info(self),
"hexagon" => hexagon::compute_abi_info(self),
- "riscv32" => riscv::compute_abi_info(self, 32),
- "riscv64" => riscv::compute_abi_info(self, 64),
+ "riscv32" | "riscv64" => riscv::compute_abi_info(cx, self),
"wasm32" if cx.target_spec().target_os != "emscripten" => {
wasm32_bindgen_compat::compute_abi_info(self)
}
// Reference: RISC-V ELF psABI specification
// https://github.com/riscv/riscv-elf-psabi-doc
+//
+// Reference: Clang RISC-V ELF psABI lowering code
+// https://github.com/llvm/llvm-project/blob/8e780252a7284be45cf1ba224cabd884847e8e92/clang/lib/CodeGen/TargetInfo.cpp#L9311-L9773
-use crate::abi::call::{ArgAbi, FnAbi};
+use crate::abi::call::{ArgAbi, ArgAttribute, CastTarget, FnAbi, PassMode, Reg, RegKind, Uniform};
+use crate::abi::{
+ self, Abi, FieldPlacement, HasDataLayout, LayoutOf, Size, TyLayout, TyLayoutMethods,
+};
+use crate::spec::HasTargetSpec;
+
+#[derive(Copy, Clone)]
+enum RegPassKind {
+ Float(Reg),
+ Integer(Reg),
+ Unknown,
+}
+
+#[derive(Copy, Clone)]
+enum FloatConv {
+ FloatPair(Reg, Reg),
+ Float(Reg),
+ MixedPair(Reg, Reg),
+}
+
+#[derive(Copy, Clone)]
+struct CannotUseFpConv;
+
+fn is_riscv_aggregate<'a, Ty>(arg: &ArgAbi<'a, Ty>) -> bool {
+ match arg.layout.abi {
+ Abi::Vector { .. } => true,
+ _ => arg.layout.is_aggregate(),
+ }
+}
+
+fn should_use_fp_conv_helper<'a, Ty, C>(
+ cx: &C,
+ arg_layout: &TyLayout<'a, Ty>,
+ xlen: u64,
+ flen: u64,
+ field1_kind: &mut RegPassKind,
+ field2_kind: &mut RegPassKind,
+) -> Result<(), CannotUseFpConv>
+where
+ Ty: TyLayoutMethods<'a, C> + Copy,
+ C: LayoutOf<Ty = Ty, TyLayout = TyLayout<'a, Ty>>,
+{
+ match arg_layout.abi {
+ Abi::Scalar(ref scalar) => match scalar.value {
+ abi::Int(..) | abi::Pointer => {
+ if arg_layout.size.bits() > xlen {
+ return Err(CannotUseFpConv);
+ }
+ match (*field1_kind, *field2_kind) {
+ (RegPassKind::Unknown, _) => {
+ *field1_kind = RegPassKind::Integer(Reg {
+ kind: RegKind::Integer,
+ size: arg_layout.size,
+ });
+ }
+ (RegPassKind::Float(_), RegPassKind::Unknown) => {
+ *field2_kind = RegPassKind::Integer(Reg {
+ kind: RegKind::Integer,
+ size: arg_layout.size,
+ });
+ }
+ _ => return Err(CannotUseFpConv),
+ }
+ }
+ abi::F32 | abi::F64 => {
+ if arg_layout.size.bits() > flen {
+ return Err(CannotUseFpConv);
+ }
+ match (*field1_kind, *field2_kind) {
+ (RegPassKind::Unknown, _) => {
+ *field1_kind =
+ RegPassKind::Float(Reg { kind: RegKind::Float, size: arg_layout.size });
+ }
+ (_, RegPassKind::Unknown) => {
+ *field2_kind =
+ RegPassKind::Float(Reg { kind: RegKind::Float, size: arg_layout.size });
+ }
+ _ => return Err(CannotUseFpConv),
+ }
+ }
+ },
+ Abi::Vector { .. } | Abi::Uninhabited => return Err(CannotUseFpConv),
+ Abi::ScalarPair(..) | Abi::Aggregate { .. } => match arg_layout.fields {
+ FieldPlacement::Union(_) => {
+ if !arg_layout.is_zst() {
+ return Err(CannotUseFpConv);
+ }
+ }
+ FieldPlacement::Array { count, .. } => {
+ for _ in 0..count {
+ let elem_layout = arg_layout.field(cx, 0);
+ should_use_fp_conv_helper(
+ cx,
+ &elem_layout,
+ xlen,
+ flen,
+ field1_kind,
+ field2_kind,
+ )?;
+ }
+ }
+ FieldPlacement::Arbitrary { .. } => {
+ match arg_layout.variants {
+ abi::Variants::Multiple { .. } => return Err(CannotUseFpConv),
+ abi::Variants::Single { .. } => (),
+ }
+ for i in arg_layout.fields.index_by_increasing_offset() {
+ let field = arg_layout.field(cx, i);
+ should_use_fp_conv_helper(cx, &field, xlen, flen, field1_kind, field2_kind)?;
+ }
+ }
+ },
+ }
+ Ok(())
+}
+
+fn should_use_fp_conv<'a, Ty, C>(
+ cx: &C,
+ arg: &TyLayout<'a, Ty>,
+ xlen: u64,
+ flen: u64,
+) -> Option<FloatConv>
+where
+ Ty: TyLayoutMethods<'a, C> + Copy,
+ C: LayoutOf<Ty = Ty, TyLayout = TyLayout<'a, Ty>>,
+{
+ let mut field1_kind = RegPassKind::Unknown;
+ let mut field2_kind = RegPassKind::Unknown;
+ if should_use_fp_conv_helper(cx, arg, xlen, flen, &mut field1_kind, &mut field2_kind).is_err() {
+ return None;
+ }
+ match (field1_kind, field2_kind) {
+ (RegPassKind::Integer(l), RegPassKind::Float(r)) => Some(FloatConv::MixedPair(l, r)),
+ (RegPassKind::Float(l), RegPassKind::Integer(r)) => Some(FloatConv::MixedPair(l, r)),
+ (RegPassKind::Float(l), RegPassKind::Float(r)) => Some(FloatConv::FloatPair(l, r)),
+ (RegPassKind::Float(f), RegPassKind::Unknown) => Some(FloatConv::Float(f)),
+ _ => None,
+ }
+}
+
+fn classify_ret<'a, Ty, C>(cx: &C, arg: &mut ArgAbi<'a, Ty>, xlen: u64, flen: u64) -> bool
+where
+ Ty: TyLayoutMethods<'a, C> + Copy,
+ C: LayoutOf<Ty = Ty, TyLayout = TyLayout<'a, Ty>>,
+{
+ if let Some(conv) = should_use_fp_conv(cx, &arg.layout, xlen, flen) {
+ match conv {
+ FloatConv::Float(f) => {
+ arg.cast_to(f);
+ }
+ FloatConv::FloatPair(l, r) => {
+ arg.cast_to(CastTarget::pair(l, r));
+ }
+ FloatConv::MixedPair(l, r) => {
+ arg.cast_to(CastTarget::pair(l, r));
+ }
+ }
+ return false;
+ }
+
+ let total = arg.layout.size;
-fn classify_ret<Ty>(arg: &mut ArgAbi<'_, Ty>, xlen: u64) {
// "Scalars wider than 2✕XLEN are passed by reference and are replaced in
// the argument list with the address."
// "Aggregates larger than 2✕XLEN bits are passed by reference and are
// replaced in the argument list with the address, as are C++ aggregates
// with nontrivial copy constructors, destructors, or vtables."
- if arg.layout.size.bits() > 2 * xlen {
- arg.make_indirect();
+ if total.bits() > 2 * xlen {
+ // We rely on the LLVM backend lowering code to lower passing a scalar larger than 2*XLEN.
+ if is_riscv_aggregate(arg) {
+ arg.make_indirect();
+ }
+ return true;
+ }
+
+ let xlen_reg = match xlen {
+ 32 => Reg::i32(),
+ 64 => Reg::i64(),
+ _ => unreachable!("Unsupported XLEN: {}", xlen),
+ };
+ if is_riscv_aggregate(arg) {
+ if total.bits() <= xlen {
+ arg.cast_to(xlen_reg);
+ } else {
+ arg.cast_to(Uniform { unit: xlen_reg, total: Size::from_bits(xlen * 2) });
+ }
+ return false;
}
// "When passed in registers, scalars narrower than XLEN bits are widened
// according to the sign of their type up to 32 bits, then sign-extended to
// XLEN bits."
- arg.extend_integer_width_to(xlen); // this method only affects integer scalars
+ extend_integer_width(arg, xlen);
+ false
}
-fn classify_arg<Ty>(arg: &mut ArgAbi<'_, Ty>, xlen: u64) {
+fn classify_arg<'a, Ty, C>(
+ cx: &C,
+ arg: &mut ArgAbi<'a, Ty>,
+ xlen: u64,
+ flen: u64,
+ is_vararg: bool,
+ avail_gprs: &mut u64,
+ avail_fprs: &mut u64,
+) where
+ Ty: TyLayoutMethods<'a, C> + Copy,
+ C: LayoutOf<Ty = Ty, TyLayout = TyLayout<'a, Ty>>,
+{
+ if !is_vararg {
+ match should_use_fp_conv(cx, &arg.layout, xlen, flen) {
+ Some(FloatConv::Float(f)) if *avail_fprs >= 1 => {
+ *avail_fprs -= 1;
+ arg.cast_to(f);
+ return;
+ }
+ Some(FloatConv::FloatPair(l, r)) if *avail_fprs >= 2 => {
+ *avail_fprs -= 2;
+ arg.cast_to(CastTarget::pair(l, r));
+ return;
+ }
+ Some(FloatConv::MixedPair(l, r)) if *avail_fprs >= 1 && *avail_gprs >= 1 => {
+ *avail_gprs -= 1;
+ *avail_fprs -= 1;
+ arg.cast_to(CastTarget::pair(l, r));
+ return;
+ }
+ _ => (),
+ }
+ }
+
+ let total = arg.layout.size;
+ let align = arg.layout.align.abi.bits();
+
// "Scalars wider than 2✕XLEN are passed by reference and are replaced in
// the argument list with the address."
// "Aggregates larger than 2✕XLEN bits are passed by reference and are
// replaced in the argument list with the address, as are C++ aggregates
// with nontrivial copy constructors, destructors, or vtables."
- if arg.layout.size.bits() > 2 * xlen {
- arg.make_indirect();
+ if total.bits() > 2 * xlen {
+ // We rely on the LLVM backend lowering code to lower passing a scalar larger than 2*XLEN.
+ if is_riscv_aggregate(arg) {
+ arg.make_indirect();
+ }
+ if *avail_gprs >= 1 {
+ *avail_gprs -= 1;
+ }
+ return;
+ }
+
+ let double_xlen_reg = match xlen {
+ 32 => Reg::i64(),
+ 64 => Reg::i128(),
+ _ => unreachable!("Unsupported XLEN: {}", xlen),
+ };
+
+ let xlen_reg = match xlen {
+ 32 => Reg::i32(),
+ 64 => Reg::i64(),
+ _ => unreachable!("Unsupported XLEN: {}", xlen),
+ };
+
+ if total.bits() > xlen {
+ let align_regs = align > xlen;
+ if is_riscv_aggregate(arg) {
+ arg.cast_to(Uniform {
+ unit: if align_regs { double_xlen_reg } else { xlen_reg },
+ total: Size::from_bits(xlen * 2),
+ });
+ }
+ if align_regs && is_vararg {
+ *avail_gprs -= *avail_gprs % 2;
+ }
+ if *avail_gprs >= 2 {
+ *avail_gprs -= 2;
+ } else {
+ *avail_gprs = 0;
+ }
+ return;
+ } else if is_riscv_aggregate(arg) {
+ arg.cast_to(xlen_reg);
+ if *avail_gprs >= 1 {
+ *avail_gprs -= 1;
+ }
+ return;
}
// "When passed in registers, scalars narrower than XLEN bits are widened
// according to the sign of their type up to 32 bits, then sign-extended to
// XLEN bits."
- arg.extend_integer_width_to(xlen); // this method only affects integer scalars
+ if *avail_gprs >= 1 {
+ extend_integer_width(arg, xlen);
+ *avail_gprs -= 1;
+ }
}
-pub fn compute_abi_info<Ty>(fn_abi: &mut FnAbi<'_, Ty>, xlen: u64) {
+fn extend_integer_width<'a, Ty>(arg: &mut ArgAbi<'a, Ty>, xlen: u64) {
+ match arg.layout.abi {
+ Abi::Scalar(ref scalar) => {
+ match scalar.value {
+ abi::Int(i, _) => {
+ // 32-bit integers are always sign-extended
+ if i.size().bits() == 32 && xlen > 32 {
+ if let PassMode::Direct(ref mut attrs) = arg.mode {
+ attrs.set(ArgAttribute::SExt);
+ return;
+ }
+ }
+ }
+ _ => (),
+ }
+ }
+ _ => (),
+ }
+ arg.extend_integer_width_to(xlen);
+}
+
+pub fn compute_abi_info<'a, Ty, C>(cx: &C, fn_abi: &mut FnAbi<'a, Ty>)
+where
+ Ty: TyLayoutMethods<'a, C> + Copy,
+ C: LayoutOf<Ty = Ty, TyLayout = TyLayout<'a, Ty>> + HasDataLayout + HasTargetSpec,
+{
+ let flen = match &cx.target_spec().options.llvm_abiname[..] {
+ "ilp32f" | "lp64f" => 32,
+ "ilp32d" | "lp64d" => 64,
+ _ => 0,
+ };
+ let xlen = cx.data_layout().pointer_size.bits();
+
+ let mut avail_gprs = 8;
+ let mut avail_fprs = 8;
+
if !fn_abi.ret.is_ignore() {
- classify_ret(&mut fn_abi.ret, xlen);
+ if classify_ret(cx, &mut fn_abi.ret, xlen, flen) {
+ avail_gprs -= 1;
+ }
}
- for arg in &mut fn_abi.args {
+ for (i, arg) in fn_abi.args.iter_mut().enumerate() {
if arg.is_ignore() {
continue;
}
- classify_arg(arg, xlen);
+ classify_arg(
+ cx,
+ arg,
+ xlen,
+ flen,
+ i >= fn_abi.fixed_count,
+ &mut avail_gprs,
+ &mut avail_fprs,
+ );
}
}
double c;
};
+struct char_char_double {
+ uint8_t a;
+ uint8_t b;
+ double c;
+};
+
+struct char_char_float {
+ uint8_t a;
+ uint8_t b;
+ float c;
+};
+
struct quad
rust_dbg_abi_1(struct quad q) {
struct quad qq = { q.c + 1,
return ff;
}
+struct char_char_double
+rust_dbg_abi_3(struct char_char_double a) {
+ struct char_char_double ccd = { a.a + 1,
+ a.b - 1,
+ a.c + 1.0 };
+ return ccd;
+}
+
+struct char_char_float
+rust_dbg_abi_4(struct char_char_float a) {
+ struct char_char_float ccd = { a.a + 1,
+ a.b - 1,
+ a.c + 1.0 };
+ return ccd;
+}
+
+
int
rust_dbg_static_mut = 3;
--- /dev/null
+// ignore-tidy-linelength
+// compile-flags: -C no-prepopulate-passes
+// only-riscv64
+// only-linux
+#![crate_type = "lib"]
+#![allow(improper_ctypes)]
+
+// CHECK: define void @f_void()
+#[no_mangle]
+pub extern "C" fn f_void() {}
+
+// CHECK: define zeroext i1 @f_scalar_0(i1 zeroext %a)
+#[no_mangle]
+pub extern "C" fn f_scalar_0(a: bool) -> bool {
+ a
+}
+
+// CHECK: define signext i8 @f_scalar_1(i8 signext %x)
+#[no_mangle]
+pub extern "C" fn f_scalar_1(x: i8) -> i8 {
+ x
+}
+
+// CHECK: define zeroext i8 @f_scalar_2(i8 zeroext %x)
+#[no_mangle]
+pub extern "C" fn f_scalar_2(x: u8) -> u8 {
+ x
+}
+
+// CHECK: define signext i32 @f_scalar_3(i32 signext %x)
+#[no_mangle]
+pub extern "C" fn f_scalar_3(x: i32) -> u32 {
+ x as u32
+}
+
+// CHECK: define i64 @f_scalar_4(i64 %x)
+#[no_mangle]
+pub extern "C" fn f_scalar_4(x: i64) -> i64 {
+ x
+}
+
+// CHECK: define float @f_fp_scalar_1(float)
+#[no_mangle]
+pub extern "C" fn f_fp_scalar_1(x: f32) -> f32 {
+ x
+}
+// CHECK: define double @f_fp_scalar_2(double)
+#[no_mangle]
+pub extern "C" fn f_fp_scalar_2(x: f64) -> f64 {
+ x
+}
+
+#[repr(C)]
+pub struct Empty {}
+
+// CHECK: define void @f_agg_empty_struct()
+#[no_mangle]
+pub extern "C" fn f_agg_empty_struct(e: Empty) -> Empty {
+ e
+}
+
+#[repr(C)]
+pub struct Tiny {
+ a: u16,
+ b: u16,
+ c: u16,
+ d: u16,
+}
+
+// CHECK: define void @f_agg_tiny(i64)
+#[no_mangle]
+pub extern "C" fn f_agg_tiny(mut e: Tiny) {
+ e.a += e.b;
+ e.c += e.d;
+}
+
+// CHECK: define i64 @f_agg_tiny_ret()
+#[no_mangle]
+pub extern "C" fn f_agg_tiny_ret() -> Tiny {
+ Tiny { a: 1, b: 2, c: 3, d: 4 }
+}
+
+#[repr(C)]
+pub struct Small {
+ a: i64,
+ b: *mut i64,
+}
+
+// CHECK: define void @f_agg_small([2 x i64])
+#[no_mangle]
+pub extern "C" fn f_agg_small(mut x: Small) {
+ x.a += unsafe { *x.b };
+ x.b = &mut x.a;
+}
+
+// CHECK: define [2 x i64] @f_agg_small_ret()
+#[no_mangle]
+pub extern "C" fn f_agg_small_ret() -> Small {
+ Small { a: 1, b: core::ptr::null_mut() }
+}
+
+#[repr(C)]
+pub struct SmallAligned {
+ a: i128,
+}
+
+// CHECK: define void @f_agg_small_aligned(i128)
+#[no_mangle]
+pub extern "C" fn f_agg_small_aligned(mut x: SmallAligned) {
+ x.a += x.a;
+}
+
+#[repr(C)]
+pub struct Large {
+ a: i64,
+ b: i64,
+ c: i64,
+ d: i64,
+}
+
+// CHECK: define void @f_agg_large(%Large* {{.*}}%x)
+#[no_mangle]
+pub extern "C" fn f_agg_large(mut x: Large) {
+ x.a = x.b + x.c + x.d;
+}
+
+// CHECK: define void @f_agg_large_ret(%Large* {{.*}}sret{{.*}}, i32 signext %i, i8 signext %j)
+#[no_mangle]
+pub extern "C" fn f_agg_large_ret(i: i32, j: i8) -> Large {
+ Large { a: 1, b: 2, c: 3, d: 4 }
+}
+
+// CHECK: define void @f_scalar_stack_1(i64, [2 x i64], i128, %Large* {{.*}}%d, i8 zeroext %e, i8 signext %f, i8 %g, i8 %h)
+#[no_mangle]
+pub extern "C" fn f_scalar_stack_1(
+ a: Tiny,
+ b: Small,
+ c: SmallAligned,
+ d: Large,
+ e: u8,
+ f: i8,
+ g: u8,
+ h: i8,
+) {
+}
+
+// CHECK: define void @f_scalar_stack_2(%Large* {{.*}}sret{{.*}}, i64 %a, i128, i128, i64 %d, i8 zeroext %e, i8 %f, i8 %g)
+#[no_mangle]
+pub extern "C" fn f_scalar_stack_2(
+ a: u64,
+ b: SmallAligned,
+ c: SmallAligned,
+ d: u64,
+ e: u8,
+ f: i8,
+ g: u8,
+) -> Large {
+ Large { a: a as i64, b: e as i64, c: f as i64, d: g as i64 }
+}
+
+extern "C" {
+ fn f_va_callee(_: i32, ...) -> i32;
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn f_va_caller() {
+ // CHECK: call signext i32 (i32, ...) @f_va_callee(i32 signext 1, i32 signext 2, i64 3, double {{.*}}, double {{.*}}, i64 {{.*}}, [2 x i64] {{.*}}, i128 {{.*}}, %Large* {{.*}})
+ f_va_callee(
+ 1,
+ 2i32,
+ 3i64,
+ 4.0f64,
+ 5.0f64,
+ Tiny { a: 1, b: 2, c: 3, d: 4 },
+ Small { a: 10, b: core::ptr::null_mut() },
+ SmallAligned { a: 11 },
+ Large { a: 12, b: 13, c: 14, d: 15 },
+ );
+ // CHECK: call signext i32 (i32, ...) @f_va_callee(i32 signext 1, i32 signext 2, i32 signext 3, i32 signext 4, i128 {{.*}}, i32 signext 6, i32 signext 7, i32 8, i32 9)
+ f_va_callee(1, 2i32, 3i32, 4i32, SmallAligned { a: 5 }, 6i32, 7i32, 8i32, 9i32);
+}
--- /dev/null
+// ignore-tidy-linelength
+// compile-flags: -C no-prepopulate-passes
+// only-riscv64
+// only-linux
+#![crate_type = "lib"]
+
+// CHECK: define void @f_fpr_tracking(double, double, double, double, double, double, double, double, i8 zeroext %i)
+#[no_mangle]
+pub extern "C" fn f_fpr_tracking(
+ a: f64,
+ b: f64,
+ c: f64,
+ d: f64,
+ e: f64,
+ f: f64,
+ g: f64,
+ h: f64,
+ i: u8,
+) {
+}
+
+#[repr(C)]
+pub struct Double {
+ f: f64,
+}
+
+#[repr(C)]
+pub struct DoubleDouble {
+ f: f64,
+ g: f64,
+}
+
+#[repr(C)]
+pub struct DoubleFloat {
+ f: f64,
+ g: f32,
+}
+
+// CHECK: define void @f_double_s_arg(double)
+#[no_mangle]
+pub extern "C" fn f_double_s_arg(a: Double) {}
+
+// CHECK: define double @f_ret_double_s()
+#[no_mangle]
+pub extern "C" fn f_ret_double_s() -> Double {
+ Double { f: 1. }
+}
+
+// CHECK: define void @f_double_double_s_arg({ double, double })
+#[no_mangle]
+pub extern "C" fn f_double_double_s_arg(a: DoubleDouble) {}
+
+// CHECK: define { double, double } @f_ret_double_double_s()
+#[no_mangle]
+pub extern "C" fn f_ret_double_double_s() -> DoubleDouble {
+ DoubleDouble { f: 1., g: 2. }
+}
+
+// CHECK: define void @f_double_float_s_arg({ double, float })
+#[no_mangle]
+pub extern "C" fn f_double_float_s_arg(a: DoubleFloat) {}
+
+// CHECK: define { double, float } @f_ret_double_float_s()
+#[no_mangle]
+pub extern "C" fn f_ret_double_float_s() -> DoubleFloat {
+ DoubleFloat { f: 1., g: 2. }
+}
+
+// CHECK: define void @f_double_double_s_arg_insufficient_fprs(double, double, double, double, double, double, double, [2 x i64])
+#[no_mangle]
+pub extern "C" fn f_double_double_s_arg_insufficient_fprs(
+ a: f64,
+ b: f64,
+ c: f64,
+ d: f64,
+ e: f64,
+ f: f64,
+ g: f64,
+ h: DoubleDouble,
+) {
+}
+
+#[repr(C)]
+pub struct DoubleInt8 {
+ f: f64,
+ i: i8,
+}
+
+#[repr(C)]
+pub struct DoubleUInt8 {
+ f: f64,
+ i: u8,
+}
+
+#[repr(C)]
+pub struct DoubleInt32 {
+ f: f64,
+ i: i32,
+}
+
+#[repr(C)]
+pub struct DoubleInt64 {
+ f: f64,
+ i: i64,
+}
+
+// CHECK: define void @f_double_int8_s_arg({ double, i8 })
+#[no_mangle]
+pub extern "C" fn f_double_int8_s_arg(a: DoubleInt8) {}
+
+// CHECK: define { double, i8 } @f_ret_double_int8_s()
+#[no_mangle]
+pub extern "C" fn f_ret_double_int8_s() -> DoubleInt8 {
+ DoubleInt8 { f: 1., i: 2 }
+}
+
+// CHECK: define void @f_double_int32_s_arg({ double, i32 })
+#[no_mangle]
+pub extern "C" fn f_double_int32_s_arg(a: DoubleInt32) {}
+
+// CHECK: define { double, i32 } @f_ret_double_int32_s()
+#[no_mangle]
+pub extern "C" fn f_ret_double_int32_s() -> DoubleInt32 {
+ DoubleInt32 { f: 1., i: 2 }
+}
+
+// CHECK: define void @f_double_uint8_s_arg({ double, i8 })
+#[no_mangle]
+pub extern "C" fn f_double_uint8_s_arg(a: DoubleUInt8) {}
+
+// CHECK: define { double, i8 } @f_ret_double_uint8_s()
+#[no_mangle]
+pub extern "C" fn f_ret_double_uint8_s() -> DoubleUInt8 {
+ DoubleUInt8 { f: 1., i: 2 }
+}
+
+// CHECK: define void @f_double_int64_s_arg({ double, i64 })
+#[no_mangle]
+pub extern "C" fn f_double_int64_s_arg(a: DoubleInt64) {}
+
+// CHECK: define { double, i64 } @f_ret_double_int64_s()
+#[no_mangle]
+pub extern "C" fn f_ret_double_int64_s() -> DoubleInt64 {
+ DoubleInt64 { f: 1., i: 2 }
+}
+
+// CHECK: define void @f_double_int8_s_arg_insufficient_gprs(i32 signext %a, i32 signext %b, i32 signext %c, i32 signext %d, i32 signext %e, i32 signext %f, i32 signext %g, i32 signext %h, [2 x i64])
+#[no_mangle]
+pub extern "C" fn f_double_int8_s_arg_insufficient_gprs(
+ a: i32,
+ b: i32,
+ c: i32,
+ d: i32,
+ e: i32,
+ f: i32,
+ g: i32,
+ h: i32,
+ i: DoubleInt8,
+) {
+}
+
+// CHECK: define void @f_struct_double_int8_insufficient_fprs(float, double, double, double, double, double, double, double, [2 x i64])
+#[no_mangle]
+pub extern "C" fn f_struct_double_int8_insufficient_fprs(
+ a: f32,
+ b: f64,
+ c: f64,
+ d: f64,
+ e: f64,
+ f: f64,
+ g: f64,
+ h: f64,
+ i: DoubleInt8,
+) {
+}
+
+#[repr(C)]
+pub struct DoubleArr1 {
+ a: [f64; 1],
+}
+
+// CHECK: define void @f_doublearr1_s_arg(double)
+#[no_mangle]
+pub extern "C" fn f_doublearr1_s_arg(a: DoubleArr1) {}
+
+// CHECK: define double @f_ret_doublearr1_s()
+#[no_mangle]
+pub extern "C" fn f_ret_doublearr1_s() -> DoubleArr1 {
+ DoubleArr1 { a: [1.] }
+}
+
+#[repr(C)]
+pub struct DoubleArr2 {
+ a: [f64; 2],
+}
+
+// CHECK: define void @f_doublearr2_s_arg({ double, double })
+#[no_mangle]
+pub extern "C" fn f_doublearr2_s_arg(a: DoubleArr2) {}
+
+// CHECK: define { double, double } @f_ret_doublearr2_s()
+#[no_mangle]
+pub extern "C" fn f_ret_doublearr2_s() -> DoubleArr2 {
+ DoubleArr2 { a: [1., 2.] }
+}
+
+#[repr(C)]
+pub struct Tricky1 {
+ f: [f64; 1],
+}
+
+#[repr(C)]
+pub struct DoubleArr2Tricky1 {
+ g: [Tricky1; 2],
+}
+
+// CHECK: define void @f_doublearr2_tricky1_s_arg({ double, double })
+#[no_mangle]
+pub extern "C" fn f_doublearr2_tricky1_s_arg(a: DoubleArr2Tricky1) {}
+
+// CHECK: define { double, double } @f_ret_doublearr2_tricky1_s()
+#[no_mangle]
+pub extern "C" fn f_ret_doublearr2_tricky1_s() -> DoubleArr2Tricky1 {
+ DoubleArr2Tricky1 { g: [Tricky1 { f: [1.] }, Tricky1 { f: [2.] }] }
+}
+
+#[repr(C)]
+pub struct EmptyStruct {}
+
+#[repr(C)]
+pub struct DoubleArr2Tricky2 {
+ s: EmptyStruct,
+ g: [Tricky1; 2],
+}
+
+// CHECK: define void @f_doublearr2_tricky2_s_arg({ double, double })
+#[no_mangle]
+pub extern "C" fn f_doublearr2_tricky2_s_arg(a: DoubleArr2Tricky2) {}
+
+// CHECK: define { double, double } @f_ret_doublearr2_tricky2_s()
+#[no_mangle]
+pub extern "C" fn f_ret_doublearr2_tricky2_s() -> DoubleArr2Tricky2 {
+ DoubleArr2Tricky2 { s: EmptyStruct {}, g: [Tricky1 { f: [1.] }, Tricky1 { f: [2.] }] }
+}
+
+#[repr(C)]
+pub struct IntDoubleInt {
+ a: i32,
+ b: f64,
+ c: i32,
+}
+
+// CHECK: define void @f_int_double_int_s_arg(%IntDoubleInt* {{.*}}%a)
+#[no_mangle]
+pub extern "C" fn f_int_double_int_s_arg(a: IntDoubleInt) {}
+
+// CHECK: define void @f_ret_int_double_int_s(%IntDoubleInt* {{.*}}sret
+#[no_mangle]
+pub extern "C" fn f_ret_int_double_int_s() -> IntDoubleInt {
+ IntDoubleInt { a: 1, b: 2., c: 3 }
+}
+
+#[repr(C)]
+pub struct CharCharDouble {
+ a: u8,
+ b: u8,
+ c: f64,
+}
+
+// CHECK: define void @f_char_char_double_s_arg([2 x i64])
+#[no_mangle]
+pub extern "C" fn f_char_char_double_s_arg(a: CharCharDouble) {}
+
+// CHECK: define [2 x i64] @f_ret_char_char_double_s()
+#[no_mangle]
+pub extern "C" fn f_ret_char_char_double_s() -> CharCharDouble {
+ CharCharDouble { a: 1, b: 2, c: 3. }
+}
+
+#[repr(C)]
+pub union DoubleU {
+ a: f64,
+}
+
+// CHECK: define void @f_double_u_arg(i64)
+#[no_mangle]
+pub extern "C" fn f_double_u_arg(a: DoubleU) {}
+
+// CHECK: define i64 @f_ret_double_u()
+#[no_mangle]
+pub extern "C" fn f_ret_double_u() -> DoubleU {
+ unsafe { DoubleU { a: 1. } }
+}
--- /dev/null
+// ignore-tidy-linelength
+// compile-flags: -C no-prepopulate-passes
+// only-riscv64
+// only-linux
+#![crate_type = "lib"]
+
+// CHECK: define void @f_fpr_tracking(float, float, float, float, float, float, float, float, i8 zeroext %i)
+#[no_mangle]
+pub extern "C" fn f_fpr_tracking(
+ a: f32,
+ b: f32,
+ c: f32,
+ d: f32,
+ e: f32,
+ f: f32,
+ g: f32,
+ h: f32,
+ i: u8,
+) {
+}
+
+#[repr(C)]
+pub struct Float {
+ f: f32,
+}
+
+#[repr(C)]
+pub struct FloatFloat {
+ f: f32,
+ g: f32,
+}
+
+// CHECK: define void @f_float_s_arg(float)
+#[no_mangle]
+pub extern "C" fn f_float_s_arg(a: Float) {}
+
+// CHECK: define float @f_ret_float_s()
+#[no_mangle]
+pub extern "C" fn f_ret_float_s() -> Float {
+ Float { f: 1. }
+}
+
+// CHECK: define void @f_float_float_s_arg({ float, float })
+#[no_mangle]
+pub extern "C" fn f_float_float_s_arg(a: FloatFloat) {}
+
+// CHECK: define { float, float } @f_ret_float_float_s()
+#[no_mangle]
+pub extern "C" fn f_ret_float_float_s() -> FloatFloat {
+ FloatFloat { f: 1., g: 2. }
+}
+
+// CHECK: define void @f_float_float_s_arg_insufficient_fprs(float, float, float, float, float, float, float, i64)
+#[no_mangle]
+pub extern "C" fn f_float_float_s_arg_insufficient_fprs(
+ a: f32,
+ b: f32,
+ c: f32,
+ d: f32,
+ e: f32,
+ f: f32,
+ g: f32,
+ h: FloatFloat,
+) {
+}
+
+#[repr(C)]
+pub struct FloatInt8 {
+ f: f32,
+ i: i8,
+}
+
+#[repr(C)]
+pub struct FloatUInt8 {
+ f: f32,
+ i: u8,
+}
+
+#[repr(C)]
+pub struct FloatInt32 {
+ f: f32,
+ i: i32,
+}
+
+#[repr(C)]
+pub struct FloatInt64 {
+ f: f32,
+ i: i64,
+}
+
+// CHECK: define void @f_float_int8_s_arg({ float, i8 })
+#[no_mangle]
+pub extern "C" fn f_float_int8_s_arg(a: FloatInt8) {}
+
+// CHECK: define { float, i8 } @f_ret_float_int8_s()
+#[no_mangle]
+pub extern "C" fn f_ret_float_int8_s() -> FloatInt8 {
+ FloatInt8 { f: 1., i: 2 }
+}
+
+// CHECK: define void @f_float_int32_s_arg({ float, i32 })
+#[no_mangle]
+pub extern "C" fn f_float_int32_s_arg(a: FloatInt32) {}
+
+// CHECK: define { float, i32 } @f_ret_float_int32_s()
+#[no_mangle]
+pub extern "C" fn f_ret_float_int32_s() -> FloatInt32 {
+ FloatInt32 { f: 1., i: 2 }
+}
+
+// CHECK: define void @f_float_uint8_s_arg({ float, i8 })
+#[no_mangle]
+pub extern "C" fn f_float_uint8_s_arg(a: FloatUInt8) {}
+
+// CHECK: define { float, i8 } @f_ret_float_uint8_s()
+#[no_mangle]
+pub extern "C" fn f_ret_float_uint8_s() -> FloatUInt8 {
+ FloatUInt8 { f: 1., i: 2 }
+}
+
+// CHECK: define void @f_float_int64_s_arg({ float, i64 })
+#[no_mangle]
+pub extern "C" fn f_float_int64_s_arg(a: FloatInt64) {}
+
+// CHECK: define { float, i64 } @f_ret_float_int64_s()
+#[no_mangle]
+pub extern "C" fn f_ret_float_int64_s() -> FloatInt64 {
+ FloatInt64 { f: 1., i: 2 }
+}
+
+// CHECK: define void @f_float_int8_s_arg_insufficient_gprs(i32 signext %a, i32 signext %b, i32 signext %c, i32 signext %d, i32 signext %e, i32 signext %f, i32 signext %g, i32 signext %h, i64)
+#[no_mangle]
+pub extern "C" fn f_float_int8_s_arg_insufficient_gprs(
+ a: i32,
+ b: i32,
+ c: i32,
+ d: i32,
+ e: i32,
+ f: i32,
+ g: i32,
+ h: i32,
+ i: FloatInt8,
+) {
+}
+
+// CHECK: define void @f_struct_float_int8_insufficient_fprs(float, float, float, float, float, float, float, float, i64)
+#[no_mangle]
+pub extern "C" fn f_struct_float_int8_insufficient_fprs(
+ a: f32,
+ b: f32,
+ c: f32,
+ d: f32,
+ e: f32,
+ f: f32,
+ g: f32,
+ h: f32,
+ i: FloatInt8,
+) {
+}
+
+#[repr(C)]
+pub struct FloatArr1 {
+ a: [f32; 1],
+}
+
+// CHECK: define void @f_floatarr1_s_arg(float)
+#[no_mangle]
+pub extern "C" fn f_floatarr1_s_arg(a: FloatArr1) {}
+
+// CHECK: define float @f_ret_floatarr1_s()
+#[no_mangle]
+pub extern "C" fn f_ret_floatarr1_s() -> FloatArr1 {
+ FloatArr1 { a: [1.] }
+}
+
+#[repr(C)]
+pub struct FloatArr2 {
+ a: [f32; 2],
+}
+
+// CHECK: define void @f_floatarr2_s_arg({ float, float })
+#[no_mangle]
+pub extern "C" fn f_floatarr2_s_arg(a: FloatArr2) {}
+
+// CHECK: define { float, float } @f_ret_floatarr2_s()
+#[no_mangle]
+pub extern "C" fn f_ret_floatarr2_s() -> FloatArr2 {
+ FloatArr2 { a: [1., 2.] }
+}
+
+#[repr(C)]
+pub struct Tricky1 {
+ f: [f32; 1],
+}
+
+#[repr(C)]
+pub struct FloatArr2Tricky1 {
+ g: [Tricky1; 2],
+}
+
+// CHECK: define void @f_floatarr2_tricky1_s_arg({ float, float })
+#[no_mangle]
+pub extern "C" fn f_floatarr2_tricky1_s_arg(a: FloatArr2Tricky1) {}
+
+// CHECK: define { float, float } @f_ret_floatarr2_tricky1_s()
+#[no_mangle]
+pub extern "C" fn f_ret_floatarr2_tricky1_s() -> FloatArr2Tricky1 {
+ FloatArr2Tricky1 { g: [Tricky1 { f: [1.] }, Tricky1 { f: [2.] }] }
+}
+
+#[repr(C)]
+pub struct EmptyStruct {}
+
+#[repr(C)]
+pub struct FloatArr2Tricky2 {
+ s: EmptyStruct,
+ g: [Tricky1; 2],
+}
+
+// CHECK: define void @f_floatarr2_tricky2_s_arg({ float, float })
+#[no_mangle]
+pub extern "C" fn f_floatarr2_tricky2_s_arg(a: FloatArr2Tricky2) {}
+
+// CHECK: define { float, float } @f_ret_floatarr2_tricky2_s()
+#[no_mangle]
+pub extern "C" fn f_ret_floatarr2_tricky2_s() -> FloatArr2Tricky2 {
+ FloatArr2Tricky2 { s: EmptyStruct {}, g: [Tricky1 { f: [1.] }, Tricky1 { f: [2.] }] }
+}
+
+#[repr(C)]
+pub struct IntFloatInt {
+ a: i32,
+ b: f32,
+ c: i32,
+}
+
+// CHECK: define void @f_int_float_int_s_arg([2 x i64])
+#[no_mangle]
+pub extern "C" fn f_int_float_int_s_arg(a: IntFloatInt) {}
+
+// CHECK: define [2 x i64] @f_ret_int_float_int_s()
+#[no_mangle]
+pub extern "C" fn f_ret_int_float_int_s() -> IntFloatInt {
+ IntFloatInt { a: 1, b: 2., c: 3 }
+}
+
+#[repr(C)]
+pub struct CharCharFloat {
+ a: u8,
+ b: u8,
+ c: f32,
+}
+
+// CHECK: define void @f_char_char_float_s_arg(i64)
+#[no_mangle]
+pub extern "C" fn f_char_char_float_s_arg(a: CharCharFloat) {}
+
+// CHECK: define i64 @f_ret_char_char_float_s()
+#[no_mangle]
+pub extern "C" fn f_ret_char_char_float_s() -> CharCharFloat {
+ CharCharFloat { a: 1, b: 2, c: 3. }
+}
+
+#[repr(C)]
+pub union FloatU {
+ a: f32,
+}
+
+// CHECK: define void @f_float_u_arg(i64)
+#[no_mangle]
+pub extern "C" fn f_float_u_arg(a: FloatU) {}
+
+// CHECK: define i64 @f_ret_float_u()
+#[no_mangle]
+pub extern "C" fn f_ret_float_u() -> FloatU {
+ unsafe { FloatU { a: 1. } }
+}
#[derive(Copy, Clone)]
pub struct Floats { a: f64, b: u8, c: f64 }
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct CharCharDouble { a: u8, b: u8, c: f64 }
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct CharCharFloat { a: u8, b: u8, c: f32 }
+
mod rustrt {
- use super::{Floats, Quad};
+ use super::{Floats, Quad, CharCharDouble, CharCharFloat};
#[link(name = "rust_test_helpers", kind = "static")]
extern {
pub fn rust_dbg_abi_1(q: Quad) -> Quad;
pub fn rust_dbg_abi_2(f: Floats) -> Floats;
+ pub fn rust_dbg_abi_3(a: CharCharDouble) -> CharCharDouble;
+ pub fn rust_dbg_abi_4(a: CharCharFloat) -> CharCharFloat;
}
}
fn test2() {
}
+#[cfg(target_pointer_width = "64")]
+fn test3() {
+ unsafe {
+ let a = CharCharDouble {
+ a: 1,
+ b: 2,
+ c: 3.,
+ };
+ let b = rustrt::rust_dbg_abi_3(a);
+ println!("a: {}", b.a);
+ println!("b: {}", b.b);
+ println!("c: {}", b.c);
+ assert_eq!(b.a, a.a + 1);
+ assert_eq!(b.b, a.b - 1);
+ assert_eq!(b.c, a.c + 1.0);
+ }
+}
+
+#[cfg(target_pointer_width = "32")]
+fn test3() {}
+
+fn test4() {
+ unsafe {
+ let a = CharCharFloat {
+ a: 1,
+ b: 2,
+ c: 3.,
+ };
+ let b = rustrt::rust_dbg_abi_4(a);
+ println!("a: {}", b.a);
+ println!("b: {}", b.b);
+ println!("c: {}", b.c);
+ assert_eq!(b.a, a.a + 1);
+ assert_eq!(b.b, a.b - 1);
+ assert_eq!(b.c, a.c + 1.0);
+ }
+}
+
pub fn main() {
test1();
test2();
+ test3();
+ test4();
}
projects / rustc.git / commitdiff