testsuite: Fix expected allocations of T9020 and T12425

These were both improved by d92c7556 but the
changes were lost due to merge silliness.

testsuite/tests/perf/compiler/all.T

@@ -749,7 +749,7 @@ test('T9020',
            # 2014-07-31:  343005716 (Windows) (general round of updates)
            # 2017-03-24:  249904136 (x86/Linux, 64-bit machine)
 
-           (wordsize(64), 562206104, 10)])
+           (wordsize(64), 391876936, 10)])
            # prev:        795469104
            # 2014-07-17:  728263536 (general round of updates)
            # 2014-09-10:  785871680 post-AMP-cleanup
@@ -764,6 +764,7 @@ test('T9020',
            # 2017-03-31:  493596312 Fix memory leak in simplifier
            # 2017-04-28:  423163832  Remove exponential behaviour in simplifier
            # 2018-04-09:  562206104 Inexplicable, collateral of #14737
+           # 2018-05-14:  391876936 Improved simplCast performance #15019
       ],
       compile,[''])
 
@@ -1042,7 +1043,7 @@ test('T12227',
 test('T12425',
      [ only_ways(['optasm']),
        compiler_stats_num_field('bytes allocated',
-          [(wordsize(64), 150743648, 5),
+          [(wordsize(64), 139100464, 5),
           # initial:      125831400
           # 2017-01-18:   133380960  Allow top-level string literals in Core
           # 2017-02-17:   153611448  Type-indexed Typeable
@@ -1051,8 +1052,8 @@ test('T12425',
           # 2017-04-28:   127500136  Remove exponential behaviour in simplifier
           # 2017-05-23:   134780272  Addition of llvm-targets in dynflags (D3352)
           # 2018-04-15:   141952368  Collateral of #14737
-          # 2018-04-30:   130646336  improved simplCast performance #15019
           # 2018-04-26:   150743648  Do not unpack class dictionaries with INLINABLE
+          # 2018-05-14:   139100464  improved simplCast performance #15019
           ]),
      ],
      compile,