mirror of
https://github.com/rust-lang/rust.git
synced 2025-11-04 06:56:14 +00:00
37 lines
915 B
Rust
37 lines
915 B
Rust
//@ compile-flags: -C opt-level=1
|
|
|
|
#![crate_type = "lib"]
|
|
#![feature(ascii_char)]
|
|
|
|
use std::ascii::Char as AsciiChar;
|
|
|
|
// CHECK-LABEL: i8 @unwrap_digit_from_remainder(i32
|
|
#[no_mangle]
|
|
pub fn unwrap_digit_from_remainder(v: u32) -> AsciiChar {
|
|
// CHECK-NOT: icmp
|
|
// CHECK-NOT: panic
|
|
|
|
// CHECK: %[[R:.+]] = urem i32 %v, 10
|
|
// CHECK-NEXT: %[[T:.+]] = trunc{{( nuw)?( nsw)?}} i32 %[[R]] to i8
|
|
// CHECK-NEXT: %[[D:.+]] = or{{( disjoint)?}} i8 %[[T]], 48
|
|
// CHECK-NEXT: ret i8 %[[D]]
|
|
|
|
// CHECK-NOT: icmp
|
|
// CHECK-NOT: panic
|
|
AsciiChar::digit((v % 10) as u8).unwrap()
|
|
}
|
|
|
|
// CHECK-LABEL: i8 @unwrap_from_masked(i8
|
|
#[no_mangle]
|
|
pub fn unwrap_from_masked(b: u8) -> AsciiChar {
|
|
// CHECK-NOT: icmp
|
|
// CHECK-NOT: panic
|
|
|
|
// CHECK: %[[M:.+]] = and i8 %b, 127
|
|
// CHECK-NEXT: ret i8 %[[M]]
|
|
|
|
// CHECK-NOT: icmp
|
|
// CHECK-NOT: panic
|
|
AsciiChar::from_u8(b & 0x7f).unwrap()
|
|
}
|