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authorSimon Peyton Jones <simonpj@microsoft.com>2022-07-19 09:54:18 +0100
committerMarge Bot <ben+marge-bot@smart-cactus.org>2022-07-25 14:38:14 -0400
commit65f7838a281fb2e9fe28e38d2fe88e06deda27a0 (patch)
treef4480d29631057ff6912249e239bba0b492efd50
parentd4fe2f4e01e414e78f8f4d9c626e8babfdf5bf48 (diff)
downloadhaskell-65f7838a281fb2e9fe28e38d2fe88e06deda27a0.tar.gz
Add a 'notes' file in testsuite/tests/perf/compiler
This file is just a place to accumlate notes about particular benchmarks, so that I don't keep re-inventing the wheel.
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diff --git a/testsuite/tests/perf/compiler/notes b/testsuite/tests/perf/compiler/notes
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+Notes about compiler benchmarks
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+This file contains informal notes about the peculiarities of
+individual benchmark programs, so that I don't keep re-inventing the
+wheel. Just add to this file if you find something new and
+interesting.
+
+T18223
+~~~~~~
+This test is full of casts and coercions.
+
+!8600 led to a 20% decrease in compiler allocation, although the
+program was the same size after every step. I suspect that it was the
+patch (part of !8600) that switched off eta-expansion in stable
+unfoldings; but I'm not sure.