hadrian: enable late-CCS for perf flavour as well

This patch enables late-CCS for perf flavour so that the testsuite can
pass for perf as well. Fixes #25308.

hadrian/doc/flavours.md

@@ -107,7 +107,7 @@ when compiling the `compiler` library, and `hsGhc` when compiling/linking the GH
     <td>-O2</td>
   </tr>
   <tr>
-    <th>release (same as perf with -haddock and +late-ccs)</td>
+    <th>release (same as perf with -haddock)</td>
     <td></td>
     <td>-O<br>-H64m</td>
     <td>-O<br>-H64m</td>
@@ -323,7 +323,7 @@ The supported transformers are listed below:
     </tr>
     <tr>
         <td><code>late_ccs</code></td>
-        <td>Enable <code>-fprof-late</code> in profiled libraries.</td>
+        <td>Enable <code>-fprof-late</code> in profiled libraries. Enabled in <code>perf</code> and <code>release</code> flavours.</td>
     </tr>
     <tr>
         <td><code>dump_stg</code></td>

hadrian/src/Settings/Flavours/Performance.hs

@@ -6,7 +6,7 @@ import {-# SOURCE #-} Settings.Default
 
 -- Please update doc/flavours.md when changing this file.
 performanceFlavour :: Flavour
-performanceFlavour = splitSections $ defaultFlavour
+performanceFlavour = splitSections $ enableLateCCS $ defaultFlavour
     { name = "perf"
     , extraArgs = performanceArgs <> defaultHaddockExtraArgs }
 

hadrian/src/Settings/Flavours/Release.hs

@@ -4,4 +4,4 @@ import Settings.Flavours.Performance
 import Flavour
 
 releaseFlavour :: Flavour
-releaseFlavour = enableLateCCS $ enableHaddock performanceFlavour { name = "release" }
+releaseFlavour = enableHaddock performanceFlavour { name = "release" }