Commit Graph

7 Commits

Author SHA1 Message Date
Dávid Bolvanský 0f14b2e6cb Revert "[BPI] Improve static heuristics for integer comparisons"
This reverts commit 50c743fa71. Patch will be split to smaller ones.
2020-08-17 20:44:33 +02:00
Dávid Bolvanský 50c743fa71 [BPI] Improve static heuristics for integer comparisons
Similarly as for pointers, even for integers a == b is usually false.

GCC also uses this heuristic.

Reviewed By: ebrevnov

Differential Revision: https://reviews.llvm.org/D85781
2020-08-13 19:54:27 +02:00
Dávid Bolvanský f9264995a6 Revert "[BPI] Improve static heuristics for integer comparisons"
This reverts commit 44587e2f7e. Sanitizer tests need to be updated.
2020-08-13 14:37:40 +02:00
Dávid Bolvanský 44587e2f7e [BPI] Improve static heuristics for integer comparisons
Similarly as for pointers, even for integers a == b is usually false.

GCC also uses this heuristic.

Reviewed By: ebrevnov

Differential Revision: https://reviews.llvm.org/D85781
2020-08-13 14:23:58 +02:00
Dávid Bolvanský a0485421d2 Revert "[BPI] Improve static heuristics for integer comparisons"
This reverts commit 385c9d673f.
2020-08-13 12:59:15 +02:00
Dávid Bolvanský 385c9d673f [BPI] Improve static heuristics for integer comparisons
Similarly as for pointers, even for integers a == b is usually false.

GCC also uses this heuristic.

Reviewed By: ebrevnov

Differential Revision: https://reviews.llvm.org/D85781
2020-08-13 12:45:40 +02:00
Sam Parker 0b53e8454b [BPI] Look through bitcasts in calcZeroHeuristic
Constant hoisting may have hidden a constant behind a bitcast so that
it isn't folded into its users. However, this prevents BPI from
calculating some of its heuristics that are based upon constant
values. So, I've added a simple helper function to look through these
casts.

Differential Revision: https://reviews.llvm.org/D58166

llvm-svn: 354119
2019-02-15 11:50:21 +00:00