[llvm-bugs] [Bug 27387] New: ADD8TLS accepts r0 as source

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=27387

            Bug ID: 27387
           Summary: ADD8TLS accepts r0 as source
           Product: libraries
           Version: trunk
          Hardware: Other
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: PowerPC
          Assignee: unassignedbugs at nondot.org
          Reporter: koriakin at 0x04.net
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

ADD8TLS, a variant of add instruction used for initial-exec TLS, currently
accepts r0 as a source register.  While add itself supports r0 just fine,
linker can relax it to a local-exec sequence, converting it to addi - which
doesn't support r0.

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