tree a24f6fcf41ef1055bb0edad966cd0a1524f060cb
parent fd7c7ddb55634c12a62ee5805213d51ef625c920
author Craig Topper <craig.topper@intel.com> 1541352687 +0000
committer Craig Topper <craig.topper@intel.com> 1541352687 +0000

[X86] Add vector shift by immediate to SimplifyDemandedBitsForTargetNode.

Summary: This also enables some constant folding from KnownBits propagation. This helps on some cases vXi64 case in 32-bit mode where constant vectors appear as vXi32 and a bitcast. This can prevent getNode from constant folding sra/shl/srl.

Reviewers: RKSimon, spatel

Reviewed By: spatel

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D54069

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@346102 91177308-0d34-0410-b5e6-96231b3b80d8