ClassReader.readUtf and compact strings

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Hi,

ClassReader.readUtf currently parses UTF-8 bytes into a char[] which it
then uses to construct a String.

The String(char[]) constructor then calls StringUTF16.compress(char[]..)
which nicely packs the char[] back into a byte[].

I imagine there could be a performance win of not doing this byte[] ->
char[] -> byte[] dance, given that most class strings are ASCII anyway.

WDYT?

Eirik.

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<div dir=3D"ltr">Hi,<div><br></div><div>ClassReader.readUtf currently parse=
s UTF-8 bytes into a char[] which it then uses to construct a String.</div>=
<div><br></div><div>The String(char[]) constructor then calls=C2=A0StringUT=
F16.compress(char[]..) which nicely packs the char[] back into a byte[].</d=
iv><div><br></div><div>I imagine there could be a performance win of not do=
ing this byte[] -&gt; char[] -&gt; byte[] dance, given that most class stri=
ngs=C2=A0are ASCII anyway.</div><div><br></div><div>WDYT?</div><div><br></d=
iv><div>Eirik.</div></div>

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