tree 245459be1bba3858d95522c78f3e3235eb009115
parent 0ac04b4ce62a458fc685178e3c7584a421ebe13d
author Roman Tereshin <rtereshin@apple.com> 1550846026 +0000
committer Roman Tereshin <rtereshin@apple.com> 1550846026 +0000

[LowerSwitch][AMDGPU] Do not handle impossible values

This patch adds LazyValueInfo to LowerSwitch to compute the range of the
value being switched over and reduce the size of the tree LowerSwitch
builds to lower a switch.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D58096

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@354670 91177308-0d34-0410-b5e6-96231b3b80d8