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
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
eb795a0661
[InstCombine] Fold (x >> y) << y -> x & (-1 << y)
...
Summary:
We already do it for matching splat constants, but not just values.
Further improvements for non-matching splat constants, as noted in
https://reviews.llvm.org/D46760#1123713 will be needed,
but i'd prefer to do that as a follow-up.
https://bugs.llvm.org/show_bug.cgi?id=37603
https://rise4fun.com/Alive/cplX
https://rise4fun.com/Alive/0HF
Reviewers: spatel, craig.topper
Reviewed By: spatel
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D47981
llvm-svn: 334372
2018-06-10 20:10:13 +00:00
1e9457ee76
[NFC][InstCombine] Revisit tests for D47980 / D47981 once more.
...
llvm-svn: 334370
2018-06-10 20:10:00 +00:00
8aada65f81
[NFC][InstCombine] Tests for (x >> y) << y -> x & (-1 << y) fold.
...
We already do it for splat constants, but not just values.
Also, undef cases are mostly non-functional.
https://bugs.llvm.org/show_bug.cgi?id=37603
https://reviews.llvm.org/D46760#1123713
https://rise4fun.com/Alive/cplX
llvm-svn: 334347
2018-06-09 09:27:43 +00:00
Eric Christopher