Implement Altivec versions for SIMD accelerated code paths
WebKit for OS X Leopard
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#34 Implement Altivec versions for SIMD accelerated code paths
Started
nobody
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Medium
Enhancement
2015-10-16
2012-08-17
Anonymous
No
Originally created by: Tobias.N... (code.google.com)@gmail.com
Originally owned by: Tobias.N... (code.google.com)@gmail.com
http://trac.webkit.org/changeset/125846 introduces a "new helper method to copy contents of a UChar buffer to a LChar buffer"
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Originally posted by: Tobias.N... (code.google.com)@gmail.com
Altivec version for the "new helper method to copy contents of a UChar buffer to a LChar buffer" is implemented and working.
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Originally posted by: Tobias.N... (code.google.com)@gmail.com
Altivec version for WTF::charactersAreAllASCII is implemented and working.
In 600.7.7 a long standing bug in the Altivec accelerated string functions was fixed that surfaced when making it use 64 bit instructions on G5 CPUs.
It would result in array out of bounds access, having the potential of causing all sorts of nearly-impossible-to-track-down-problems.