Commits

Nadav Rotem committed 1e99e160e88
Remove some of the passes at the late stages of the optimization pipeline. After many attempts I found that the change in this commit does not regress the performance of the test suite. The passes that I added in this commit come to replace the late 'SSAPasses' pipe. I am still not completely sure why there is such a strong dependency between SimplifyCFG and InstCombine. Swift SVN r26658