aco: Allow literals on VOP3 instructions.

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Reviewed-By: Timur Kristóf <timur.kristof@gmail.com>

src/amd/compiler/aco_assembler.cpp

@@ -502,7 +502,6 @@ void emit_instruction(asm_context& ctx, std::vector<uint32_t>& out, Instruction*
          for (unsigned i = 0; i < 3; i++)
             encoding |= vop3->neg[i] << (29+i);
          out.push_back(encoding);
-         return;
 
       } else if (instr->isDPP()){
          /* first emit the instruction without the DPP operand */
@@ -525,6 +524,7 @@ void emit_instruction(asm_context& ctx, std::vector<uint32_t>& out, Instruction*
       } else {
          unreachable("unimplemented instruction format");
       }
+      break;
    }
 
    /* append literal dword */

src/amd/compiler/aco_validate.cpp

@@ -104,7 +104,9 @@ void validate(Program* program, FILE * output)
             unsigned num_literals = 0;
             for (unsigned i = 0; i < instr->operands.size(); i++)
             {
-               if (instr->operands[i].isLiteral()) {
+               if (instr->operands[i].isLiteral() && instr->isVOP3() && program->chip_class >= GFX10) {
+                  num_literals++;
+               } else if (instr->operands[i].isLiteral()) {
                   check(instr->format == Format::SOP1 ||
                         instr->format == Format::SOP2 ||
                         instr->format == Format::SOPC ||