Apply Note [Sensitivity to unique increment] to LargeRecord

testsuite/tests/perf/compiler/LargeRecord.hs

@@ -11,6 +11,9 @@
 
 {- Notes on LargeRecord
 ~~~~~~~~~~~~~~~~~~~~~~~
+Subject to Note [Sensitivity to unique increment] in T12545.hs with spread of 2.2%
+
+
 I noticed that in GHC of July 2022, when compiling this
 module I got lots of "SPEC" rules
 

testsuite/tests/perf/compiler/T8095.hs

 {-# OPTIONS_GHC -freduction-depth=1000 #-}
 {-# LANGUAGE TypeOperators,DataKinds,KindSignatures,TypeFamilies,PolyKinds,UndecidableInstances #-}
--- Subject to Note [Sensitivity to unique increment] with spread of 1.7%
+-- Subject to Note [Sensitivity to unique increment] in T12545.hs with spread of 1.7%
 import GHC.TypeLits
 data Nat1 = Zero | Succ Nat1
 type family Replicate1 (n :: Nat1) (x::a) :: [a]

testsuite/tests/perf/compiler/all.T

@@ -206,9 +206,11 @@ test('CoOpt_Singletons',
 
 #########
 
+# LargeRecord is subject to Note [Sensitivity to unique increment] in T12545.hs
+# observed spread was 2.2%
 test ('LargeRecord',
       [ only_ways(['normal']),
-        collect_compiler_stats('bytes allocated',1)
+        collect_compiler_stats('bytes allocated',5)
       , extra_files(['SuperRecord.hs'])
       ],
       multimod_compile,