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[InstCombine] Add more tests for signed saturing math overflow; NFC
authorNikita Popov <nikita.ppv@gmail.com>
Mon, 8 Apr 2019 20:02:47 +0000 (20:02 +0000)
committerNikita Popov <nikita.ppv@gmail.com>
Mon, 8 Apr 2019 20:02:47 +0000 (20:02 +0000)
commitc924f5a32a32cd2f1399512c81acbb598613f2fa
tree83d36332bcaa07135b521ac7bfc0eff9f54c2025
parent53883093874820caa1ab94e918b74fe98a5358af
[InstCombine] Add more tests for signed saturing math overflow; NFC

Overflow conditions for sadd.sat and ssub.sat which can be determined
based on constant ranges, but not necessarily known bits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@357938 91177308-0d34-0410-b5e6-96231b3b80d8
test/Transforms/InstCombine/saturating-add-sub.ll