Jim Apple has posted comments on this change.

Change subject: IMPALA-4058: ByteSwap256 assumed memory was 16-byte aligned.
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Patch Set 3:

(2 comments)

http://gerrit.cloudera.org:8080/#/c/4205/3/be/src/exprs/expr-test.cc
File be/src/exprs/expr-test.cc:

Line 1931:   {
> Why the nested block? Should probably just be a separate function if we wan
Just for scoping so MAX_LEN, to_reverse and reversed don't conflict with 
anything.

For better or worse, this file includes very long functions. I was trying to 
match that style without polluting the space of local variable names.


http://gerrit.cloudera.org:8080/#/c/4205/3/be/src/util/bit-util.cc
File be/src/util/bit-util.cc:

Line 161:   _mm_storeu_si128(reinterpret_cast<__m128i*>(dst + 16), part1);
> what instructions did the compiler emit before this change?
movdqa


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Gerrit-MessageType: comment
Gerrit-Change-Id: I39b2b47bb717d5ac9727512a24fcf8a8a6a8dcc6
Gerrit-PatchSet: 3
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Jim Apple <[email protected]>
Gerrit-Reviewer: Dan Hecht <[email protected]>
Gerrit-Reviewer: Jim Apple <[email protected]>
Gerrit-Reviewer: Tim Armstrong <[email protected]>
Gerrit-Reviewer: Youwei Wang <[email protected]>
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