Allow OPSEL for GFX11 and GFX12.

Section 7.5.1 of the RDNA3 ISA doc apparently indicates that
OPSEL is allowed (although ignored) in the dot instructions
in question. Therefore, we should allow it for GFX11 and GFX12.

Author: jwanggit86

llvm/lib/Target/AMDGPU/VOP3PInstructions.td

@@ -383,8 +383,15 @@ defm V_DOT2_F32_F16 : VOP3PInst<"v_dot2_f32_f16",
 
 let OtherPredicates = [HasDot7Insts] in {
 defm V_DOT4_U32_U8  : VOP3PInst<"v_dot4_u32_u8",
+  VOP3P_Profile<VOP_I32_I32_I32_I32, VOP3_PACKED>, int_amdgcn_udot4, 1>;
+// v_dot4_u32_u8 does not allow op_sel Pre-GFX11
+defm V_DOT4_U32_U8_PREGFX11  : VOP3PInst<"v_dot4_u32_u8",
   VOP3P_Profile<VOP_I32_I32_I32_I32, VOP3_PACKED_NO_OPSEL>, int_amdgcn_udot4, 1>;
+
 defm V_DOT8_U32_U4  : VOP3PInst<"v_dot8_u32_u4",
+  VOP3P_Profile<VOP_I32_I32_I32_I32, VOP3_PACKED>, int_amdgcn_udot8, 1>;
+// v_dot8_u32_u4 does not allow op_sel Pre-GFX11
+defm V_DOT8_U32_U4_PREGFX11  : VOP3PInst<"v_dot8_u32_u4",
   VOP3P_Profile<VOP_I32_I32_I32_I32, VOP3_PACKED_NO_OPSEL>, int_amdgcn_udot8, 1>;
 } // End OtherPredicates = [HasDot7Insts]
 
@@ -411,7 +418,7 @@ defm V_DOT2_F32_BF16 : VOP3PInst<"v_dot2_f32_bf16", DOT2_BF16_Profile,
 
 multiclass VOP3PDOTIUInst <string OpName, SDPatternOperator intrinsic_node> {
   let IsDOT = 1 in
-  defm NAME : VOP3PInst<OpName, VOP3P_Profile<VOP_I32_I32_I32_I32, VOP3_PACKED_NO_OPSEL>,
+  defm NAME : VOP3PInst<OpName, VOP3P_Profile<VOP_I32_I32_I32_I32, VOP3_PACKED>,
                         null_frag, 1>;
   // Dot-iu instructions consider input as signed if imod neg bits are set. Thus
   // Dot-iu Intrinsics have extra operands and require separate codegen pattern.
@@ -1712,8 +1719,8 @@ defm V_DOT2_I32_I16 : VOP3P_Real_vi <0x26>;
 defm V_DOT2_U32_U16 : VOP3P_Real_vi <0x27>;
 
 defm V_DOT2_F32_F16 : VOP3P_Real_vi <0x23>;
-defm V_DOT4_U32_U8  : VOP3P_Real_vi <0x29>;
-defm V_DOT8_U32_U4  : VOP3P_Real_vi <0x2b>;
+defm V_DOT4_U32_U8_PREGFX11  : VOP3P_Real_vi <0x29>;
+defm V_DOT8_U32_U4_PREGFX11  : VOP3P_Real_vi <0x2b>;
 
 defm V_DOT4_I32_I8  : VOP3P_Real_vi <0x28>;
 defm V_DOT8_I32_I4  : VOP3P_Real_vi <0x2a>;
@@ -1845,8 +1852,10 @@ defm V_DOT2_I32_I16 : VOP3P_Real_gfx10 <0x14>;
 defm V_DOT2_U32_U16 : VOP3P_Real_gfx10 <0x15>;
 
 defm V_DOT2_F32_F16 : VOP3P_Real_gfx10_gfx11_gfx12_Triple<0x13>;
-defm V_DOT4_U32_U8  : VOP3P_Real_gfx10_gfx11_gfx12<0x17>;
-defm V_DOT8_U32_U4  : VOP3P_Real_gfx10_gfx11_gfx12<0x19>;
+defm V_DOT4_U32_U8  : VOP3P_Real_gfx11_gfx12<0x17>;
+defm V_DOT4_U32_U8_PREGFX11  : VOP3P_Real_gfx10<0x17>;
+defm V_DOT8_U32_U4  : VOP3P_Real_gfx11_gfx12<0x19>;
+defm V_DOT8_U32_U4_PREGFX11  : VOP3P_Real_gfx10<0x19>;
 
 defm V_DOT4_I32_I8  : VOP3P_Real_gfx10 <0x16>;
 defm V_DOT8_I32_I4  : VOP3P_Real_gfx10 <0x18>;