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authorHerbert Valerio Riedel <hvr@gnu.org>2014-10-19 20:37:40 +0200
committerHerbert Valerio Riedel <hvr@gnu.org>2014-11-12 11:03:42 +0100
commitc774b28f76ee4c220f7c1c9fd81585e0e3af0e8a (patch)
tree9fc156d8e3c7d8fd414b572826f139c1efa5f34c /testsuite/tests/lib
parentfcfc87dce752c3c1702eeb54d1023213729f1832 (diff)
downloadhaskell-c774b28f76ee4c220f7c1c9fd81585e0e3af0e8a.tar.gz
Implement new integer-gmp2 from scratch (re #9281)
This is done as a separate `integer-gmp2` backend library because it turned out to become a complete rewrite from scratch. Due to the different (over)allocation scheme and potentially different accounting (via the new `{shrink,resize}MutableByteArray#` primitives), some of the nofib benchmarks actually results in increased allocation numbers (but not necessarily an increase in runtime!). I believe the allocation numbers could improve if `{resize,shrink}MutableByteArray#` could be optimised to reallocate in-place more efficiently. Here are the more apparent changes in the latest nofib comparision between `integer-gmp` and `integer-gmp2`: ------------------------------------------------------------------ Program Size Allocs Runtime Elapsed TotalMem ------------------------------------------------------------------ ... bernouilli +1.6% +15.3% 0.132 0.132 0.0% ... cryptarithm1 -2.2% 0.0% -9.7% -9.7% 0.0% ... fasta -0.7% -0.0% +10.9% +10.9% 0.0% ... kahan +0.6% +38.9% 0.169 0.169 0.0% ... lcss -0.7% -0.0% -6.4% -6.4% 0.0% ... mandel +1.6% +33.6% 0.049 0.049 0.0% ... pidigits +0.8% +8.5% +3.9% +3.9% 0.0% power +1.4% -23.8% -18.6% -18.6% -16.7% ... primetest +1.3% +50.1% 0.085 0.085 0.0% ... rsa +1.6% +53.4% 0.026 0.026 0.0% ... scs +1.2% +6.6% +6.5% +6.6% +14.3% ... symalg +1.0% +9.5% 0.010 0.010 0.0% ... transform -0.6% -0.0% -5.9% -5.9% 0.0% ... ------------------------------------------------------------------ Min -2.3% -23.8% -18.6% -18.6% -16.7% Max +1.6% +53.4% +10.9% +10.9% +14.3% Geometric Mean -0.3% +1.9% -0.8% -0.8% +0.0% (see P35 / https://phabricator.haskell.org/P35 for full report) By default, `INTEGER_LIBRARY=integer-gmp2` is active now, which results in the package `integer-gmp-1.0.0.0` being registered in the package db. The previous `integer-gmp-0.5.1.0` can be restored by setting `INTEGER_LIBRARY=integer-gmp` (but will probably be removed altogether for GHC 7.12). In-tree GMP support has been stolen from the old `integer-gmp` (while unpatching the custom memory-allocators, as well as forcing `-fPIC`) A minor hack to `ghc-cabal` was necessary in order to support two different `integer-gmp` packages (in different folders) with the same package key. There will be a couple of follow-up commits re-implementing some features that were dropped to keep D82 minimal, as well as further clean-ups/improvements. More information can be found via #9281 and https://ghc.haskell.org/trac/ghc/wiki/Design/IntegerGmp2 Reviewed By: austin, rwbarton, simonmar Differential Revision: https://phabricator.haskell.org/D82
Diffstat (limited to 'testsuite/tests/lib')
-rw-r--r--testsuite/tests/lib/integer/all.T3
1 files changed, 2 insertions, 1 deletions
diff --git a/testsuite/tests/lib/integer/all.T b/testsuite/tests/lib/integer/all.T
index 7b5e5f2dbe..55154265fc 100644
--- a/testsuite/tests/lib/integer/all.T
+++ b/testsuite/tests/lib/integer/all.T
@@ -1,7 +1,8 @@
test('integerBits', normal, compile_and_run, [''])
test('integerConversions', normal, compile_and_run, [''])
+## 'integerGmpInternals' disabled till the extra primitives are re-implemented
# skip ghci as it doesn't support unboxed tuples
-test('integerGmpInternals', [reqlib('integer-gmp'), omit_ways('ghci')], compile_and_run, [''])
+# test('integerGmpInternals', [reqlib('integer-gmp'), omit_ways('ghci')], compile_and_run, [''])
test('integerConstantFolding',
[ extra_clean(['integerConstantFolding.simpl'])
, when(compiler_debugged(), expect_broken(8525))],