don't compute residue twice

RalfJung · RalfJung · commit c1645f6c6582 · 2019-06-29T14:31:54.000+02:00
diff --git a/src/intptrcast.rs b/src/intptrcast.rs
@@ -108,10 +108,9 @@ impl<'mir, 'tcx> GlobalState {
     /// Shifts `addr` to make it aligned with `align` by rounding `addr` to the smallest multiple
     /// of `align` that is larger or equal to `addr`
     fn align_addr(addr: u64, align: u64) -> u64 {
-        if addr % align == 0 {
-            addr
-        } else {
-            addr + align - addr % align
+        match addr % align {
+            0 => addr,
+            rem => addr + align - rem
         }
     }
 }

Original file line number	Diff line number	Diff line change
`@@ -108,10 +108,9 @@ impl<'mir, 'tcx> GlobalState {`
`108`	`108`	/// Shifts `addr` to make it aligned with `align` by rounding `addr` to the smallest multiple
`109`	`109`	/// of `align` that is larger or equal to `addr`
`110`	`110`	`fn align_addr(addr: u64, align: u64) -> u64 {`
`111`		`- if addr % align == 0 {`
`112`		`- addr`
`113`		`- } else {`
`114`		`- addr + align - addr % align`
	`111`	`+ match addr % align {`
	`112`	`+ 0 => addr,`
	`113`	`+ rem => addr + align - rem`
`115`	`114`	`}`
`116`	`115`	`}`
`117`	`116`	`}`