aco: fix nir_op_vec8/16 with 16-bit elements.

Fixes: 5718347c2b4 ("aco: implement vec2/3/4 with subdword operands")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24286>

diff --git a/src/amd/compiler/aco_instruction_selection.cpp b/src/amd/compiler/aco_instruction_selection.cpp
index 22600ac..ea03e40 100644 (file)
--- a/src/amd/compiler/aco_instruction_selection.cpp
+++ b/src/amd/compiler/aco_instruction_selection.cpp
@@ -1462,11 +1462,14 @@ visit_alu_instr(isel_context* ctx, nir_alu_instr* instr)
 
          if (dst.size() == 1)
             bld.copy(Definition(dst), packed[0]);
-         else if (dst.size() == 2)
-            bld.pseudo(aco_opcode::p_create_vector, Definition(dst), packed[0], packed[1]);
-         else
-            bld.pseudo(aco_opcode::p_create_vector, Definition(dst), packed[0], packed[1],
-                       packed[2]);
+         else {
+            aco_ptr<Pseudo_instruction> vec{create_instruction<Pseudo_instruction>(
+               aco_opcode::p_create_vector, Format::PSEUDO, dst.size(), 1)};
+            vec->definitions[0] = Definition(dst);
+            for (unsigned i = 0; i < dst.size(); ++i)
+               vec->operands[i] = Operand(packed[i]);
+            bld.insert(std::move(vec));
+         }
       }
       break;
    }