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-rw-r--r--src/compiler/glsl/builtin_int64.h30
1 files changed, 30 insertions, 0 deletions
diff --git a/src/compiler/glsl/builtin_int64.h b/src/compiler/glsl/builtin_int64.h
new file mode 100644
index 00000000000..108da08ee48
--- /dev/null
+++ b/src/compiler/glsl/builtin_int64.h
@@ -0,0 +1,30 @@
+ir_function_signature *
+umul64(void *mem_ctx, builtin_available_predicate avail)
+{
+ ir_function_signature *const sig =
+ new(mem_ctx) ir_function_signature(glsl_type::uvec2_type, avail);
+ ir_factory body(&sig->body, mem_ctx);
+ sig->is_defined = true;
+
+ exec_list sig_parameters;
+
+ ir_variable *const r0001 = new(mem_ctx) ir_variable(glsl_type::uvec2_type, "a", ir_var_function_in);
+ sig_parameters.push_tail(r0001);
+ ir_variable *const r0002 = new(mem_ctx) ir_variable(glsl_type::uvec2_type, "b", ir_var_function_in);
+ sig_parameters.push_tail(r0002);
+ ir_variable *const r0003 = new(mem_ctx) ir_variable(glsl_type::uvec2_type, "result", ir_var_auto);
+ body.emit(r0003);
+ body.emit(assign(r0003, imul_high(swizzle_x(r0001), swizzle_x(r0002)), 0x02));
+
+ body.emit(assign(r0003, mul(swizzle_x(r0001), swizzle_x(r0002)), 0x01));
+
+ ir_expression *const r0004 = mul(swizzle_x(r0001), swizzle_y(r0002));
+ ir_expression *const r0005 = mul(swizzle_y(r0001), swizzle_x(r0002));
+ ir_expression *const r0006 = add(r0004, r0005);
+ body.emit(assign(r0003, add(swizzle_y(r0003), r0006), 0x02));
+
+ body.emit(ret(r0003));
+
+ sig->replace_parameters(&sig_parameters);
+ return sig;
+}