Nikita Popov 66c5f5714a [ConstantRange] Add saturating add/sub methods ...

Add support for uadd_sat and friends to ConstantRange, so we can
handle uadd.sat and friends in LVI. The implementation is forwarding
to the corresponding APInt methods with appropriate bounds.

One thing worth pointing out here is that the handling of wrapping
ranges is not maximally accurate. A simple example is that adding 0
to a wrapped range will return a full range, rather than the original
wrapped range. The tests also only check that the non-wrapping
envelope is correct and minimal.

Differential Revision: https://reviews.llvm.org/D60946

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@358855 91177308-0d34-0410-b5e6-96231b3b80d8

2019-04-21 15:23:05 +00:00

..

llvm

[ConstantRange] Add saturating add/sub methods

2019-04-21 15:23:05 +00:00

llvm-c

[LLVM-C] Add DIFile Field Accesssors

2019-04-17 13:29:14 +00:00