diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
index 93cf2bdafac..73bd172a784 100644
--- a/src/amd/common/ac_nir_to_llvm.c
+++ b/src/amd/common/ac_nir_to_llvm.c
@@ -143,11 +143,6 @@ static LLVMValueRef get_sampler_desc(struct ac_nir_context *ctx,
 				     const nir_tex_instr *instr,
 				     bool image, bool write);
 
-static unsigned radeon_llvm_reg_index_soa(unsigned index, unsigned chan)
-{
-	return (index * 4) + chan;
-}
-
 static unsigned shader_io_get_unique_index(gl_varying_slot slot)
 {
 	/* handle patch indices separate */
diff --git a/src/amd/common/ac_nir_to_llvm.h b/src/amd/common/ac_nir_to_llvm.h
index 7b64ad54fc5..ee73d1cbbcd 100644
--- a/src/amd/common/ac_nir_to_llvm.h
+++ b/src/amd/common/ac_nir_to_llvm.h
@@ -214,6 +214,11 @@ struct ac_shader_variant_info {
 	};
 };
 
+static inline unsigned radeon_llvm_reg_index_soa(unsigned index, unsigned chan)
+{
+	return (index * 4) + chan;
+}
+
 void ac_compile_nir_shader(LLVMTargetMachineRef tm,
                            struct ac_shader_binary *binary,
                            struct ac_shader_config *config,