[AMDGPU][MC][GFX940] Disable v_mac_f32_dpp

[dp]

Summary

See bug 55612 for issue description.

llvm/lib/Target/AMDGPU/VOPInstructions.td

class VOP_DPP_Real <VOP_DPP_Pseudo ps, int EncodingFamily> :
 
   let Constraints     = ps.Constraints;
   let DisableEncoding = ps.DisableEncoding;
 
   // Copy relevant pseudo op flags
   let isConvergent         = ps.isConvergent;
   let SubtargetPredicate   = ps.SubtargetPredicate;
   let AssemblerPredicate   = ps.AssemblerPredicate;
+  let OtherPredicates      = ps.OtherPredicates;
   let AsmMatchConverter    = ps.AsmMatchConverter;
   let AsmVariantName       = ps.AsmVariantName;
   let UseNamedOperandTable = ps.UseNamedOperandTable;
   let DecoderNamespace     = ps.DecoderNamespace;
   let Constraints          = ps.Constraints;
   let DisableEncoding      = ps.DisableEncoding;
   let TSFlags              = ps.TSFlags;
   let SchedRW              = ps.SchedRW;

llvm/test/MC/AMDGPU/gfx940_err.s

 // RUN: not llvm-mc -arch=amdgcn -mcpu=gfx940 %s 2>&1 | FileCheck --check-prefix=GFX940 --implicit-check-not=error: %s
 
 v_mac_f32 v0, v1, v2
-// FIXME: error message is incorrect
-// GFX940: error: operands are not valid for this GPU or mode
+// GFX940: error: instruction not supported on this GPU
+
+v_mac_f32_e64 v5, v1, v2
+// GFX940: error: instruction not supported on this GPU
+
+v_mac_f32_dpp v5, v1, v2 quad_perm:[0,1,2,3] row_mask:0xf bank_mask:0xf
+// GFX940: error: instruction not supported on this GPU
+
+v_mac_f32_dpp v5, v1, v2 dpp8:[7,6,5,4,3,2,1,0]
+// GFX940: error: instruction not supported on this GPU
+
+v_mac_f32_sdwa v5, v1, v2 dst_sel:DWORD dst_unused:UNUSED_PRESERVE src0_sel:DWORD src1_sel:DWORD
+// GFX940: error: instruction not supported on this GPU
 
 v_mad_f32 v0, v1, v2, v3
 // GFX940: error: instruction not supported on this GPU
 
 v_madak_f32 v0, v1, v2, 0
 // GFX940: error: instruction not supported on this GPU
 
 v_madmk_f32 v0, v1, 0, v2