add a new bugpoint mode -llc-safe.  This uses LLC for both halves of a miscompilation.  This is useful for working around GCC+CBE bugs or for handling programs that CBE doesn't support (e.g. inline asm) when searching for optimizer bugs.
add a new bugpoint mode -llc-safe.  This uses LLC for both halves of a
miscompilation.  This is useful for working around GCC+CBE bugs or for handling
programs that CBE doesn't support (e.g. inline asm) when searching for
optimizer bugs.


git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@31588 91177308-0d34-0410-b5e6-96231b3b80d8

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