[llvm-bugs] [Bug 46429] New: [X86] FastISel inline memcpy expansion doesn't add MachineMemOperands

via llvm-bugs llvm-bugs at lists.llvm.org
Wed Jun 24 13:08:27 PDT 2020


https://bugs.llvm.org/show_bug.cgi?id=46429

            Bug ID: 46429
           Summary: [X86] FastISel inline memcpy expansion doesn't add
                    MachineMemOperands
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Backend: X86
          Assignee: unassignedbugs at nondot.org
          Reporter: craig.topper at gmail.com
                CC: craig.topper at gmail.com, echristo at gmail.com,
                    llvm-bugs at lists.llvm.org, llvm-dev at redking.me.uk,
                    spatel+llvm at rotateright.com
                CC: echristo at gmail.com

FastISel can create inline expansions of memcpy using load and store
instructions, but no MMO is created for them.

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