[AIX][XCOFF] Add support for generating assembly code for one-byte mergable strings
This patch adds support for generating assembly code for one-byte mergeable strings.
Generating assembly code for multi-byte mergeable strings and the XCOFF object code for mergeable strings will be supported later.
Reviewers: hubert.reinterpretcast, jasonliu, daltenty, sfertile, DiggerLin, Xiangling_L
Reviewed by: daltenty
Subscribers: wuzish, nemanjai, hiraditya, kbarton, jsji, llvm-commits
Differential Revision: https://reviews.llvm.org/D70310