Diego Novillo 8e90e86295 Fix PR 23525 - Separate header mass propagation in irregular loops. ... Summary: When propagating mass through irregular loops, the mass flowing through each loop header may not be equal. This was causing wrong frequencies to be computed for irregular loop headers. Fixed by keeping track of masses flowing through each of the headers in an irregular loop. To do this, we now keep track of per-header backedge weights. After the loop mass is distributed through the loop, the backedge weights are used to re-distribute the loop mass to the loop headers. Since each backedge will have a mass proportional to the different branch weights, the loop headers will end up with a more approximate weight distribution (as opposed to the current distribution that assumes that every loop header is the same). Reviewers: dexonsmith Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D10348 llvm-svn: 239843		2015-06-16 19:10:58 +00:00
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bad_input.ll	Remove 4,096 loop scale limitation.	2015-04-01 17:42:27 +00:00
basic.ll
double_backedge.ll
double_exit.ll
extremely-likely-loop-successor.ll
irreducible.ll	Fix PR 23525 - Separate header mass propagation in irregular loops.	2015-06-16 19:10:58 +00:00
loop_with_branch.ll
loops_with_profile_info.ll	[opaque pointer type] Add textual IR support for explicit type parameter to the call instruction	2015-04-16 23:24:18 +00:00
nested_loop_with_branches.ll
PR23525.ll	Fix PR 23525 - Separate header mass propagation in irregular loops.	2015-06-16 19:10:58 +00:00