en Copyright 2015 Java http://172.16.0.5:8080/history/llvm-project-15.0.7/llvm/test/CodeGen/SystemZ/memset-07.ll#cbf682cb [SystemZ] Improve codegen for memset.Memset with a constant length was implemented with a single store followed bya series of MVC:s. This patch changes this so that one store of the byte isemitted for each MVC, which avoids data dependencies between the MVCs. AnMVI/STC + MVC(len-1) is done for each block.In addition, memset with a variable length is now also handled without alibcall. Since the byte is first stored and then MVC is used from thataddress, a length of two must now be subtracted instead of one for the loopand EXRL. This requires an extra check for the one-byte case, which ishandled in a special block with just a single MVI/STC (like GCC).Review: Ulrich WeigandDifferential Revision: https://reviews.llvm.org/D112004 List of files: /llvm-project-15.0.7/llvm/test/CodeGen/SystemZ/memset-07.ll Thu, 14 Oct 2021 18:10:47 +0000 Jonas Paulsson <paulsson@linux.vnet.ibm.com>