[llvm-bugs] [Bug 31898] New: Bad machine code: Using an undefined physical register

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=31898

            Bug ID: 31898
           Summary: Bad machine code: Using an undefined physical register
           Product: libraries
           Version: trunk
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: AVR
          Assignee: unassignedbugs at nondot.org
          Reporter: me at dylanmckay.io
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

llc ~/projects/llvm-project/llvm/test/CodeGen/Generic/vector.ll -o -


*** Bad machine code: Using an undefined physical register ***
- function:    test_f8
- basic block: BB#0  (0x7fd2298033d8)
- instruction: %R29R28<earlyclobber,def> = LDDWRdYQ
- operand 1:   %R29R28

*** Bad machine code: Using an undefined physical register ***
- function:    test_f8
- basic block: BB#0  (0x7fd2298033d8)
- instruction: %R29R28<def,tied1> = ADIWRdK
- operand 1:   %R29R28<kill,tied0>
LLVM ERROR: Found 2 machine code errors.

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