blob: 4167becf5e9a96298db184c347f655563f24dbaf (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
// compile-flags: -C opt-level=1
// ignore-debug (the extra assertions get in the way)
#![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 i32 %[[R]] to i8
// CHECK-NEXT: %[[D:.+]] = or 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()
}
|
