Sebastian Pop e2d6b27abc [hot-cold-split] fix static analysis of cold regions ...

Make the code of blockEndsInUnreachable to match the function
blockEndsInUnreachable in CodeGen/BranchFolding.cpp. I also have
added a note to make sure the code of this function will not be
modified unless the back-end version is also modified.

An early return before outlining has been added to avoid
outlining the full function body when the first block in the
function is marked cold.

The static analysis of cold code has been amended to avoid
marking the whole function as cold by back-propagation
because the back-propagation would mark blocks with return
statements as cold.

The patch adds debug statements to help discover these problems.

Differential Revision: https://reviews.llvm.org/D52904

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@344558 91177308-0d34-0410-b5e6-96231b3b80d8

2018-10-15 21:43:11 +00:00

..

split-cold-1.ll

[hot-cold-split] fix static analysis of cold regions

2018-10-15 21:43:11 +00:00

split-cold-2.ll

[hot-cold-split] fix static analysis of cold regions

2018-10-15 21:43:11 +00:00

split-out-dbg-val-of-arg.ll

[CodeExtractor] Erase debug intrinsics in outlined thunks (fix PR22900)

2018-10-15 19:22:20 +00:00