output for parser stages and c runtime doc

qbe.ce

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+var fd = use("fd")
+var json = use("json")
+var tokenize = use("tokenize")
+var parse = use("parse")
+var fold = use("fold")
+var mcode = use("mcode")
+var streamline = use("streamline")
+var qbe_macros = use("qbe")
+var qbe_emit = use("qbe_emit")
+var filename = args[0]
+var src = text(fd.slurp(filename))
+var result = tokenize(src, filename)
+var ast = parse(result.tokens, src, filename, tokenize)
+var folded = fold(ast)
+var compiled = mcode(folded)
+var optimized = streamline(compiled)
+var il = qbe_emit(optimized, qbe_macros)
+print(il)