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Author SHA1 Message Date
Manman Ren 2b6a0dfd4c Reverse order of the two branches at end of a basic block if it is profitable. 
We branch to the successor with higher edge weight first.
Convert from
     je    LBB4_8  --> to outer loop
     jmp   LBB4_14 --> to inner loop
to
     jne   LBB4_14
     jmp   LBB4_8

PR12750
rdar: 11393714

llvm-svn: 161018
 2012-07-31 01:11:07 +00:00