Update compiler/rustc_target/src/abi/mod.rs

oli-obk · RalfJung · web-flow · commit 5f087f089f03 · 2020-11-04T15:12:44.000+01:00
Co-authored-by: Ralf Jung &lt;post@ralfj.de&gt;
diff --git a/compiler/rustc_target/src/abi/mod.rs b/compiler/rustc_target/src/abi/mod.rs
@@ -319,7 +319,7 @@ impl Size {
         // Sign-extend it.
         let shift = 128 - size;
         // Shift the unsigned value to the left, then shift back to the right as signed
-        // (essentially fills with FF on the left).
+        // (essentially fills with sign bit on the left).
         (((value << shift) as i128) >> shift) as u128
     }
 

Original file line number	Diff line number	Diff line change
`@@ -319,7 +319,7 @@ impl Size {`
`319`	`319`	`// Sign-extend it.`
`320`	`320`	`let shift = 128 - size;`
`321`	`321`	`// Shift the unsigned value to the left, then shift back to the right as signed`
`322`		`- // (essentially fills with FF on the left).`
	`322`	`+ // (essentially fills with sign bit on the left).`
`323`	`323`	`(((value << shift) as i128) >> shift) as u128`
`324`	`324`	`}`
`325`	`325`