For LP64 mode, this has no effect as pointers are already 64 bits. For ILP32 mode (x32), this extension is specified by the ABI. Reviewed By: pengfei Differential Revision: https://reviews.llvm.org/D91338
Summary: Zero-extend register to 64-bit for callq/jmpq. Test Plan: 3 tests added Reviewers: nadav, dschuff Subscribers: llvm-commits, zinovy.nis Differential Revision: http://reviews.llvm.org/D5355 llvm-svn: 217942