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------------------------------------------------------------------------ r142168 | chandlerc | 2011-10-16 18:11:57 -0700 (Sun, 16 Oct 2011) | 8 lines Add a routine to swap branch instruction operands, and update any profile metadata at the same time. Use it to preserve metadata attached to a branch when re-writing it in InstCombine. Add metadata to the canonicalize_branch InstCombine test, and check that it is tranformed correctly. Reviewed by Nick Lewycky! ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_30@142545 91177308-0d34-0410-b5e6-96231b3b80d8