bjoernager/rust
bjoernager/rust
1
Fork 0
Code Issues Pull requests Activity

interpret: simplify pointer arithmetic logic

Browse source
This commit is contained in:
Ralf Jung 2024-08-01 10:19:13 +02:00
parent de78cb56b2
commit 5d5c97aad7
27 changed files with 73 additions and 187 deletions
Download patch file Download diff file Expand all files Collapse all files

6
compiler/rustc_abi/src/lib.rs
View file

@ -516,7 +516,7 @@ impl Size {
/// Truncates `value` to `self` bits and then sign-extends it to 128 bits
/// (i.e., if it is negative, fill with 1's on the left).
#[inline]
pub fn sign_extend(self, value: u128) -> u128 {
pub fn sign_extend(self, value: u128) -> i128 {
let size = self.bits();
if size == 0 {
// Truncated until nothing is left.
@ -526,7 +526,7 @@ impl Size {
let shift = 128 - size;
// Shift the unsigned value to the left, then shift back to the right as signed
// (essentially fills with sign bit on the left).
(((value << shift) as i128) >> shift) as u128
((value << shift) as i128) >> shift
}
/// Truncates `value` to `self` bits.
@ -544,7 +544,7 @@ impl Size {
#[inline]
pub fn signed_int_min(&self) -> i128 {
self.sign_extend(1_u128 << (self.bits() - 1)) as i128
self.sign_extend(1_u128 << (self.bits() - 1))
}
#[inline]