tree 3d72f97135168d199709c46d1d5ebf5f93663865
parent b484e25d12755c9433bb822be12bdad94bc6f98f
author Michael Kruse <llvm@meinersbur.de> 1518469780 +0000
committer Michael Kruse <llvm@meinersbur.de> 1518469780 +0000

[ScopBuilder] scalar-indep: Fix mutually referencing PHIs.

Two or more PHIs mutually using each other directly or indirectly as
incoming value could cause that a PHI WRITE be added before the PHI READ
(i.e. it overwrites the current incoming value with the next incoming
value before it being read).

Fix by ensuring that the PHI WRITE and PHI READ are in the same statement.

This should fix the miscompile of SingleSource/Benchmark/Misc/whetstone
from the test-suite.

git-svn-id: https://llvm.org/svn/llvm-project/polly/trunk@324934 91177308-0d34-0410-b5e6-96231b3b80d8