[llvm-bugs] [Bug 39296] New: [AMDGPU][MC][GFX8+] Add a symbolic name for 1/2pi

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=39296

            Bug ID: 39296
           Summary: [AMDGPU][MC][GFX8+] Add a symbolic name for 1/2pi
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Backend: AMDGPU
          Assignee: unassignedbugs at nondot.org
          Reporter: dpreobrazhensky at luxoft.com
                CC: llvm-bugs at lists.llvm.org

Currently 1/2pi may only be specified in a numeric form. This is inconvenient
and error-prone. Examples:

    v_add_f16 v0, 0.15915494, v1
    v_add_f64 v[0:1], v[2:3], 0.159154943091895317852646485335

Assembler should support special syntax or a symbolic name for this constant.
For example:

    v_add_f16 v0, INV2PI, v1
    v_add_f64 v[0:1], v[2:3], INV2PI

Any suggestions?

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