Peixin-Qiao 1d4238be52 [flang] Support GNU extensions IARGC and GETARG in runtime ...

The GNU extension intrinsic IARGC is equivalent to
COMMAND_ARGUMENT_COUNT, and the GETARG is similar to
GET_COMMAND_ARGUMENT, but with less arguments. Reuse the runtime of
COMMAND_ARGUMENT_COUNT and GET_COMMAND_ARGUMENT for IARGC and GETARG.

Reviewed By: klausler

Differential Revision: https://reviews.llvm.org/D133558

2022-10-11 10:29:23 +08:00

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