ac/nir: move radeon_llvm_reg_index_soa() to ac_nir_to_llvm.h

Required in order to move all RADV specific code outside of ac/nir.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>

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 */

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,