The ISL header isl_int_sioimath.h uses the keyword "inline" which
the MSVC C compiler is not compatable with. The equivalent keyword
for MSVC C is "__inline"
As this effects isl we need to upstream it first before committing this
to Polly. Michael Kruse resubmitted your patch to isl on the isl
development mailing list. We will reintegrate this change with the
next isl update. Thank you for your help!