Remove useless parameter from ghost

WaffleLapkin · WaffleLapkin · commit 26232f1ff5a2 · 2023-04-12T10:34:29.000Z
diff --git a/compiler/rustc_data_structures/src/tagged_ptr/copy.rs b/compiler/rustc_data_structures/src/tagged_ptr/copy.rs
@@ -20,7 +20,7 @@ where
     T: Tag,
 {
     packed: NonNull<P::Target>,
-    data: PhantomData<(P, T)>,
+    tag_ghost: PhantomData<T>,
 }
 
 impl<P, T, const COMPARE_PACKED: bool> Copy for CopyTaggedPtr<P, T, COMPARE_PACKED>
@@ -51,7 +51,7 @@ where
     T: Tag,
 {
     pub fn new(pointer: P, tag: T) -> Self {
-        Self { packed: Self::pack(P::into_ptr(pointer), tag), data: PhantomData }
+        Self { packed: Self::pack(P::into_ptr(pointer), tag), tag_ghost: PhantomData }
     }
 
     const TAG_BIT_SHIFT: usize = usize::BITS as usize - T::BITS;

Original file line number	Diff line number	Diff line change
`@@ -20,7 +20,7 @@ where`
`20`	`20`	`T: Tag,`
`21`	`21`	`{`
`22`	`22`	`packed: NonNull<P::Target>,`
`23`		`- data: PhantomData<(P, T)>,`
	`23`	`+ tag_ghost: PhantomData<T>,`
`24`	`24`	`}`
`25`	`25`
`26`	`26`	`impl<P, T, const COMPARE_PACKED: bool> Copy for CopyTaggedPtr<P, T, COMPARE_PACKED>`
`@@ -51,7 +51,7 @@ where`
`51`	`51`	`T: Tag,`
`52`	`52`	`{`
`53`	`53`	`pub fn new(pointer: P, tag: T) -> Self {`
`54`		`- Self { packed: Self::pack(P::into_ptr(pointer), tag), data: PhantomData }`
	`54`	`+ Self { packed: Self::pack(P::into_ptr(pointer), tag), tag_ghost: PhantomData }`
`55`	`55`	`}`
`56`	`56`
`57`	`57`	`const TAG_BIT_SHIFT: usize = usize::BITS as usize - T::BITS;`