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| author | Herbert Valerio Riedel <hvr@gnu.org> | 2018-01-26 13:07:17 -0500 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2018-01-26 14:37:28 -0500 |
| commit | 31c260f3967d2c06063c962a98475058daa45c6d (patch) | |
| tree | 0c2ce731c6e84f62d0f8b2ef7ee5d37bc3ffafec /testsuite/tests/rts/T1791 | |
| parent | e7dcc7085315ea8ebc2d6808fde2d9c37fd10c67 (diff) | |
| download | haskell-31c260f3967d2c06063c962a98475058daa45c6d.tar.gz | |
Add ptr-eq short-cut to `compareByteArrays#` primitive
This is an obvious optimisation whose overhead is neglectable but
which significantly simplifies the common uses of `compareByteArrays#`
which would otherwise require to make *careful* use of
`reallyUnsafePtrEquality#` or (equally fragile) `byteArrayContents#`
which can result in less optimal assembler code being generated.
Test Plan: carefully examined generated cmm/asm code; validate via phab
Reviewers: alexbiehl, bgamari, simonmar
Reviewed By: bgamari, simonmar
Subscribers: rwbarton, thomie, carter
Differential Revision: https://phabricator.haskell.org/D4319
Diffstat (limited to 'testsuite/tests/rts/T1791')
0 files changed, 0 insertions, 0 deletions