Commit Graph

3 Commits

Author SHA1 Message Date
Eric Christopher cee313d288 Revert "Temporarily Revert "Add basic loop fusion pass.""
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
2019-04-17 04:52:47 +00:00
Eric Christopher a863435128 Temporarily Revert "Add basic loop fusion pass."
As it's causing some bot failures (and per request from kbarton).

This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda.

llvm-svn: 358546
2019-04-17 02:12:23 +00:00
Bjorn Pettersson 33c9d5535f [ScalarEvolution] Fix base condition in isNormalAddRecPHI.
Summary:
The function is meant to recurse until it comes upon the
phi it's looking for. However, with the current condition,
it will recurse until it finds anything _but_ the phi.

The function will even fail for simple cases like:
  %i = phi i32 [ %inc, %loop ], ...
  ...
  %inc = add i32 %i, 1

because the base condition will not happen when the phi
is recursed to, and the recursion will end with a 'false'
result since the previous instruction is a phi.

Reviewers: sanjoy, atrick

Reviewed By: sanjoy

Subscribers: Ka-Ka, bjope, llvm-commits

Committing on behalf of: Bevin Hansson (bevinh)

Differential Revision: https://reviews.llvm.org/D40946

llvm-svn: 320700
2017-12-14 14:47:52 +00:00