[llvm-bugs] [Bug 32600] New: [PPC] Decoded branch operand out of range

via llvm-bugs llvm-bugs at lists.llvm.org
Mon Apr 10 10:47:07 PDT 2017


            Bug ID: 32600
           Summary: [PPC] Decoded branch operand out of range
           Product: libraries
           Version: 3.9
          Hardware: Other
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: PowerPC
          Assignee: unassignedbugs at nondot.org
          Reporter: nholcomb at wisc.edu
                CC: llvm-bugs at lists.llvm.org

Using LLVM to decode ppc64 instructions, the BT instruction operand can be
decoded as an out-of-range value.

Bytes: 41 80 80 00
Expected: bt 0, .-32768
Actual: bt 0, .+32768

Trying to assemble the decoding produced by LLVM using gas produced the error:
operand out of range (0x0000000000008000 is not between 0xffffffffffff8000 and

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