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2005 Jul 28
1
[patch] libvorbis + gcc4
...ose to the result of gcc-3.4.
gcc3.4-O20.ogg 20423
gcc4-O20.ogg 54623
gcc4-O3.ogg 54623
gcc4-O2.ogg 20423
looking at the hexdump of gcc4-02.ogg and gcc3.4-020.ogg,
they differ slightly, things like:
-0000000 674f 5367 0200 0000 0000 0000 0000 0e8a
-0000010 25e5 0000 0000 5b97 0de7 1e01 7601 726f
+0000000 674f 5367 0200 0000 0000 0000 0000 fb5f
+0000010 0bb0 0000 0000 6e2e af20 1e01 7601 726f
luckily the wav files i get from oggdec do not differ.
the question is now which part of -O3(which -O20 is in the end)
causes this increase in vorbis and is it a bug in vorbis or
in gcc4?...