[llvm] [AMDGPU][MC][True16] VOP3dot instruction update for true16/fake16 (PR #113474)

[Ivan Kosarev via llvm-commits]

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@@ -4700,44 +4700,117 @@ v_pack_b32_f16_e64_dpp v5, -v1, |v2| op_sel:[1,0,0] row_xmask:0 row_mask:0x1 ban
 v_pack_b32_f16_e64_dpp v255, -|v255|, -|v255| op_sel:[0,1,0] row_xmask:15 row_mask:0x3 bank_mask:0x0 bound_ctrl:1 fi:1
 // GFX11: [0xff,0x13,0x11,0xd7,0xfa,0xfe,0x03,0x60,0xff,0x6f,0x0d,0x30]
 
-v_dot2_f16_f16_e64_dpp v0, v1, v2, v3 quad_perm:[0,1,2,3] row_mask:0x0 bank_mask:0x0 fi:1
-// GFX11: encoding: [0x00,0x00,0x66,0xd6,0xfa,0x04,0x0e,0x04,0x01,0xe4,0x04,0x00]
+v_dot2_f16_f16_e64_dpp v0.l, v1, v2, v3.l op_sel:[1,1,0,0] quad_perm:[0,1,2,3] row_mask:0x0 bank_mask:0x0 fi:1
+// GFX11-ERR: :[[@LINE-1]]:{{[0-9]+}}: error: invalid op_sel operand
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kosarev wrote:

I'm a bit puzzled with this change. Why do we test erroring out op_sel operands here and where do we test the [0x00,0x00,0x66,0xd6,0xfa,0x04,0x0e,0x04,0x01,0xe4,0x04,0x00] code for GFX11 now?

https://github.com/llvm/llvm-project/pull/113474