[LLVMdev] Understanding SelectionDAG construction

[Christoph Erhardt]

Hi Ankur,

> The flags "-view-sched-dags".. described in the doc doesn't seem to work. (
> "llc -help" doesn't list it ).
as far as I remember, displaying DAGs during compilation is only enabled
in "debug builds" [1] of LLVM. You probably have to re-configure and
re-compile LLVM to enable this feature.

Best regards,
Christoph

[1] http://llvm.org/docs/GettingStarted.html#compile