Rollup merge of #137195 - workingjubilee:remove-pref-align-from-cg-clif, r=bjorn3

cg_clif: use exclusively ABI alignment

This will minimize possible conflict with future updates to AbiAndPrefAlign that may remove some fields. It is also almost a bug to consider them.

r? ``@bjorn3``

compiler/rustc_codegen_cranelift/src/abi/comments.rs

@@ -65,7 +65,7 @@ pub(super) fn add_locals_header_comment(fx: &mut FunctionCx<'_, '_, '_>) {
     if fx.clif_comments.enabled() {
         fx.add_global_comment(String::new());
         fx.add_global_comment(
-            "kind  local ty                              size align (abi,pref)".to_string(),
+            "kind  local ty                              size align (abi)".to_string(),
         );
     }
 }
@@ -84,14 +84,13 @@ pub(super) fn add_local_place_comments<'tcx>(
     let (kind, extra) = place.debug_comment();
 
     fx.add_global_comment(format!(
-        "{:<5} {:5} {:30} {:4}b {}, {}{}{}",
+        "{:<5} {:5} {:30} {:4}b {}{}{}",
         kind,
         format!("{:?}", local),
         format!("{:?}", ty),
         size.bytes(),
         align.abi.bytes(),
-        align.pref.bytes(),
-        if extra.is_empty() { "" } else { "              " },
+        if extra.is_empty() { "" } else { "                " },
         extra,
     ));
 }

compiler/rustc_codegen_cranelift/src/constant.rs

@@ -272,7 +272,7 @@ fn data_id_for_static(
             .layout_of(ty::TypingEnv::fully_monomorphized().as_query_input(ty))
             .unwrap()
             .align
-            .pref
+            .abi
             .bytes();
 
         let linkage = if import_linkage == rustc_middle::mir::mono::Linkage::ExternalWeak