Bill Wendling c054086630 Try to improve performance by using a read/write buffer instead of I/O. ...

The calls to fwrite/fread can be very expensive. GCC avoids this by using a
buffer to read and write from the file, thus limiting the number of fwrite/fread
calls.

<rdar://problem/13466086>

llvm-svn: 181924

2013-05-15 21:31:22 +00:00

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