maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
364,911 Commits 23 Branches 0 Tags 2.2 GiB
Commit Graph

5 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
Nikita Popov 37cf25c3c6 [InstCombine] Fold add nuw + uadd.with.overflow 
Fold add nuw and uadd.with.overflow with constants if the
addition does not overflow.

Part of https://bugs.llvm.org/show_bug.cgi?id=38146.

Patch by Dan Robertson.

Differential Revision: https://reviews.llvm.org/D59471

llvm-svn: 356584
 2019-03-20 18:00:27 +00:00
Nikita Popov 208381953b [ValueTracking] Use computeConstantRange() for unsigned add/sub overflow 
Improve computeOverflowForUnsignedAdd/Sub in ValueTracking by
intersecting the computeConstantRange() result into the ConstantRange
created from computeKnownBits(). This allows us to detect some
additional never/always overflows conditions that can't be determined
from known bits.

This revision also adds basic handling for constants to
computeConstantRange(). Non-splat vectors will be handled in a followup.

The signed case will also be handled in a followup, as it needs some
more groundwork.

Differential Revision: https://reviews.llvm.org/D59386

llvm-svn: 356489
 2019-03-19 17:53:56 +00:00
Nikita Popov 930341ba30 [InstCombine] Add tests for add nuw + uaddo; NFC 
Baseline tests for D59471 (InstCombine of `add nuw` and `uaddo` with
constants).

Patch by Dan Robertson.

Differential Revision: https://reviews.llvm.org/D59472

llvm-svn: 356414
 2019-03-18 21:35:09 +00:00