The "if" clause on "do simd" is only supported from OpenMP version 5.0.
Currently the tablegen for OMP_DoSimd does not restrict it, leading to
an ICE if the clause is used with an older OpenMP version as opposed to
a semantic error. Restrict the version to show the correct semantic
error.
Add flang tests for using the if clause with -fopenmp-version=45
and -fopenmp-version=50 to check for these types of errors.
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Signed-off-by: Kajetan Puchalski <kajetan.puchalski@arm.com>
7c2f109811