[llvm-bugs] [Bug 47741] New: [AMDGPU][MC][GFX1030] v_mac_f32 should not be supported

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=47741

            Bug ID: 47741
           Summary: [AMDGPU][MC][GFX1030] v_mac_f32 should not be
                    supported
           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

GFX1030 does not support v_mac_f32 instruction. However assembler triggers no
errors for dpp variants of this instruction:

    // Assembled w/o errors!
    v_mac_f32 v5, v1, v2 dpp8:[7,6,5,4,3,2,1,0]
    v_mac_f32_dpp v5, v1, v2 quad_perm:[3,2,1,0] row_mask:0x0 bank_mask:0x0

Other variants of v_mac_f32 are rejected as expected.

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