Fix setglobal! (first argument is a module, not a symbol)

Author: mlechu

src/linear_ir.jl

@@ -333,7 +333,7 @@ function emit_assignment_or_setglobal(ctx, srcref, lhs, rhs, op=K"=")
         emit(ctx, @ast ctx srcref [
             K"call"
             "setglobal!"::K"top"
-            string(nameof(binfo.mod))::K"Identifier"
+            binfo.mod::K"Value"
             binfo.name::K"Symbol"
             rhs
         ])

test/decls.jl

@@ -63,4 +63,16 @@ end
 # Unsupported for now
 @test_throws LoweringError JuliaLowering.include_string(test_mod, "const a,b,c = 1,2,3")
 
+# Globals in local scope
+@test JuliaLowering.include_string(test_mod, """
+function f()
+    let
+        global x
+        x = 1
+    end
+end
+f()
+x
+""") === 1
+
 end