[PATCH] Change the fast-isel-abort option from bool to int to enable "levels"

[Owen Anderson]

================
Comment at: lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp:175
@@ +174,3 @@
+             "fails to lower an instruction: 0 disable the abort, 1 will "
+             "abort but for args, calls and terminators, 1 will also "
+             "abort for argument lowering, and 3 will never fallback "
----------------
This usage string looks wrong.  The effect of 2 is never defined.

http://reviews.llvm.org/D7941

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