Evan Cheng 615620c9e8 Currently, codegen may spent some time in SDISel passes even if an entire ... function is successfully handled by fast-isel. That's because function arguments are *always* handled by SDISel. Introduce FastLowerArguments to allow each target to provide hook to handle formal argument lowering. As a proof-of-concept, add ARMFastIsel::FastLowerArguments to handle functions with 4 or fewer scalar integer (i8, i16, or i32) arguments. It completely eliminates the need for SDISel for trivial functions. rdar://13163905 llvm-svn: 174855		2013-02-11 01:27:15 +00:00
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llvm	Currently, codegen may spent some time in SDISel passes even if an entire	2013-02-11 01:27:15 +00:00
llvm-c	Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer.	2013-01-28 01:35:51 +00:00