Todd Lipcon created HADOOP-9707:
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Summary: Fix register lists for crc32c inline assembly
Key: HADOOP-9707
URL: https://issues.apache.org/jira/browse/HADOOP-9707
Project: Hadoop Common
Issue Type: Bug
Components: util
Affects Versions: 3.0.0, 2.1.0-beta
Reporter: Todd Lipcon
Assignee: Todd Lipcon
Priority: Minor
The inline assembly used for the crc32 instructions has an incorrect clobber
list: the computed CRC values are "in-out" variables and thus need to use the
"matching constraint" syntax in the clobber list.
This doesn't seem to cause a problem now in Hadoop, but may break in a
different compiler version which allocates registers differently, or may break
when the same code is used in another context.
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