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add note about slower floating point code for 32-bit x86 bootimage build

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Joel Dice 2011-01-20 08:50:53 -07:00
parent 51c56c1b3c
commit 2dcc1d525a
1 changed files with 4 additions and 1 deletions
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readme.txt
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@ -442,7 +442,10 @@ For boot image builds:
space in the executable than the equivalent class files. In
practice, this can make the executable 30-50% larger. Also, AOT
compilation does not yet yield significantly faster or smaller code
than JIT compilation.
than JIT compilation. Finally, floating point code may be slower
on 32-bit x86 since the compiler cannot assume SSE2 support will be
available at runtime, and the x87 FPU is not supported except via
out-of-line helper functions.
Note you can use ProGuard without using a boot image and vice-versa,
as desired.