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more general multi-file testing support for FDO

From: Xinliang David Li <davidxl at google dot com>
To: GCC Patches <gcc-patches at gcc dot gnu dot org>
Cc: Jan Hubicka <hubicka at ucw dot cz>
Date: Sun, 1 May 2011 10:34:25 -0700
Subject: more general multi-file testing support for FDO

I need this support for LIPO but it might be also useful for trunk.
The support is 'borrowed' from lib/lto.exp.  I have tested with it and
it works fine. The only limitation is for any subdirectory with a
multi-source test case, all the other single source test case need
also to follow the same naming standard, i.e., named as xxxx_0.c.  The
current FDO test under gcc.dg/tree-prof works as it is without any
changes.

Thanks,

David

Attachment: prof-multi.p
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