llvmGen: Align objects in the data section

Objects in the data section may be referenced via tagged pointers.
Thus, align those objects to a 4- or 8-byte boundary for 32- or 64-bit
platforms, respectively.  Note, this may need to be reconsidered if
objects with a greater natural alignment requirement are emitted as e.g.
128-bit atomics.

Fixes #24163.

compiler/GHC/CmmToLlvm/Data.hs

@@ -89,6 +89,7 @@ genLlvmData (sec, CmmStaticsRaw lbl xs) = do
         align          = case sec of
                             Section CString _ -> if (platformArch platform == ArchS390X)
                                                     then Just 2 else Just 1
+                            Section Data _    -> Just $ platformWordSizeInBytes platform
                             _                 -> Nothing
         const          = if sectionProtection sec == ReadOnlySection
                             then Constant else Global