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// revisions: riscv64 riscv32
// assembly-output: emit-asm
//[riscv64] compile-flags: --target riscv64imac-unknown-none-elf
//[riscv64] needs-llvm-components: riscv
//[riscv32] compile-flags: --target riscv32imac-unknown-none-elf
//[riscv32] needs-llvm-components: riscv
// compile-flags: -C target-feature=+d
#![feature(no_core, lang_items, rustc_attrs, asm_sym)]
#![crate_type = "rlib"]
#![no_core]
#![allow(asm_sub_register)]
#[rustc_builtin_macro]
macro_rules! asm {
() => {};
}
#[rustc_builtin_macro]
macro_rules! concat {
() => {};
}
#[rustc_builtin_macro]
macro_rules! stringify {
() => {};
}
#[lang = "sized"]
trait Sized {}
#[lang = "copy"]
trait Copy {}
type ptr = *mut u8;
impl Copy for i8 {}
impl Copy for i16 {}
impl Copy for i32 {}
impl Copy for f32 {}
impl Copy for i64 {}
impl Copy for f64 {}
impl Copy for ptr {}
extern "C" {
fn extern_func();
static extern_static: u8;
}
// CHECK-LABEL: sym_fn:
// CHECK: #APP
// CHECK: call extern_func
// CHECK: #NO_APP
#[no_mangle]
pub unsafe fn sym_fn() {
asm!("call {}", sym extern_func);
}
// CHECK-LABEL: sym_static:
// CHECK: #APP
// CHECK: auipc t0, %pcrel_hi(extern_static)
// CHECK: lb t0, %pcrel_lo(.Lpcrel_hi{{[0-9]+}})(t0)
// CHECK: #NO_APP
#[no_mangle]
pub unsafe fn sym_static() {
asm!("lb t0, {}", sym extern_static);
}
macro_rules! check {
($func:ident $ty:ident $class:ident $mov:literal) => {
#[no_mangle]
pub unsafe fn $func(x: $ty) -> $ty {
// Hack to avoid function merging
extern "Rust" {
fn dont_merge(s: &str);
}
dont_merge(stringify!($func));
let y;
asm!(concat!($mov, " {}, {}"), out($class) y, in($class) x);
y
}
};
}
macro_rules! check_reg {
($func:ident $ty:ident $reg:tt $mov:literal) => {
#[no_mangle]
pub unsafe fn $func(x: $ty) -> $ty {
// Hack to avoid function merging
extern "Rust" {
fn dont_merge(s: &str);
}
dont_merge(stringify!($func));
let y;
asm!(concat!($mov, " ", $reg, ", ", $reg), lateout($reg) y, in($reg) x);
y
}
};
}
// CHECK-LABEL: reg_i8:
// CHECK: #APP
// CHECK: mv {{[a-z0-9]+}}, {{[a-z0-9]+}}
// CHECK: #NO_APP
check!(reg_i8 i8 reg "mv");
// CHECK-LABEL: reg_i16:
// CHECK: #APP
// CHECK: mv {{[a-z0-9]+}}, {{[a-z0-9]+}}
// CHECK: #NO_APP
check!(reg_i16 i16 reg "mv");
// CHECK-LABEL: reg_i32:
// CHECK: #APP
// CHECK: mv {{[a-z0-9]+}}, {{[a-z0-9]+}}
// CHECK: #NO_APP
check!(reg_i32 i32 reg "mv");
// CHECK-LABEL: reg_f32:
// CHECK: #APP
// CHECK: mv {{[a-z0-9]+}}, {{[a-z0-9]+}}
// CHECK: #NO_APP
check!(reg_f32 f32 reg "mv");
// riscv64-LABEL: reg_i64:
// riscv64: #APP
// riscv64: mv {{[a-z0-9]+}}, {{[a-z0-9]+}}
// riscv64: #NO_APP
#[cfg(riscv64)]
check!(reg_i64 i64 reg "mv");
// riscv64-LABEL: reg_f64:
// riscv64: #APP
// riscv64: mv {{[a-z0-9]+}}, {{[a-z0-9]+}}
// riscv64: #NO_APP
#[cfg(riscv64)]
check!(reg_f64 f64 reg "mv");
// CHECK-LABEL: reg_ptr:
// CHECK: #APP
// CHECK: mv {{[a-z0-9]+}}, {{[a-z0-9]+}}
// CHECK: #NO_APP
check!(reg_ptr ptr reg "mv");
// CHECK-LABEL: freg_f32:
// CHECK: #APP
// CHECK: fmv.s f{{[a-z0-9]+}}, f{{[a-z0-9]+}}
// CHECK: #NO_APP
check!(freg_f32 f32 freg "fmv.s");
// CHECK-LABEL: freg_f64:
// CHECK: #APP
// CHECK: fmv.d f{{[a-z0-9]+}}, f{{[a-z0-9]+}}
// CHECK: #NO_APP
check!(freg_f64 f64 freg "fmv.d");
// CHECK-LABEL: a0_i8:
// CHECK: #APP
// CHECK: mv a0, a0
// CHECK: #NO_APP
check_reg!(a0_i8 i8 "a0" "mv");
// CHECK-LABEL: a0_i16:
// CHECK: #APP
// CHECK: mv a0, a0
// CHECK: #NO_APP
check_reg!(a0_i16 i16 "a0" "mv");
// CHECK-LABEL: a0_i32:
// CHECK: #APP
// CHECK: mv a0, a0
// CHECK: #NO_APP
check_reg!(a0_i32 i32 "a0" "mv");
// CHECK-LABEL: a0_f32:
// CHECK: #APP
// CHECK: mv a0, a0
// CHECK: #NO_APP
check_reg!(a0_f32 f32 "a0" "mv");
// riscv64-LABEL: a0_i64:
// riscv64: #APP
// riscv64: mv a0, a0
// riscv64: #NO_APP
#[cfg(riscv64)]
check_reg!(a0_i64 i64 "a0" "mv");
// riscv64-LABEL: a0_f64:
// riscv64: #APP
// riscv64: mv a0, a0
// riscv64: #NO_APP
#[cfg(riscv64)]
check_reg!(a0_f64 f64 "a0" "mv");
// CHECK-LABEL: a0_ptr:
// CHECK: #APP
// CHECK: mv a0, a0
// CHECK: #NO_APP
check_reg!(a0_ptr ptr "a0" "mv");
// CHECK-LABEL: fa0_f32:
// CHECK: #APP
// CHECK: fmv.s fa0, fa0
// CHECK: #NO_APP
check_reg!(fa0_f32 f32 "fa0" "fmv.s");
// CHECK-LABEL: fa0_f64:
// CHECK: #APP
// CHECK: fmv.d fa0, fa0
// CHECK: #NO_APP
check_reg!(fa0_f64 f64 "fa0" "fmv.d");
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