[llvm-bugs] [Bug 13803] llvm-mc treats .n suffix as .w suffix for ADC

via llvm-bugs llvm-bugs at lists.llvm.org
Sat Aug 15 21:15:18 PDT 2015


Saleem Abdulrasool <compnerd at compnerd.org> changed:

           What    |Removed                     |Added
             Status|NEW                         |RESOLVED
                 CC|                            |compnerd at compnerd.org
         Resolution|---                         |INVALID

--- Comment #1 from Saleem Abdulrasool <compnerd at compnerd.org> ---
This must be an extension.  As per the ARM ARM:

ADC{S}<c>.W <Rd>, <Rm>{, <shift>}

is what you are trying to use.  <shift> is a register shift, which requires the
shift type (LSL, LSR, ASR, ROR) or RRX for a non-constant applied.

Is there a strong reason to support this extension? Can you indicate what
assemblers support this extension, and why you feel this is to support?

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