src/ir.cpp: wire-up IR for handle builtin;
src/ir.cpp: wire-up IR for handle builtin;

Tracking Issue #1296 ;

andrewrk/zig,zig-lang/zig,raulgrell/zig,zig-lang/zig,raulgrell/zig,zig-lang/zig,andrewrk/zig,Dimenus/zig,raulgrell/zig,raulgrell/zig,Dimenus/zig,raulgrell/zig,Dimenus/zig