[llvm-bugs] [Bug 46307] New: -i8 flag ignored by f18

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=46307

            Bug ID: 46307
           Summary: -i8 flag ignored by f18
           Product: flang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: release blocker
          Priority: P
         Component: Frontend
          Assignee: unassignedbugs at nondot.org
          Reporter: naromero at anl.gov
                CC: David.Truby at arm.com, jperier at nvidia.com,
                    kirankumartp at gmail.com, llvm-bugs at lists.llvm.org,
                    sscalpone at nvidia.com

Looks like the f18 tooling driver ignores `-i8` which is needed by many codes.
I am hoping this is easy to fix.

See reduced test case in attachment.


[naromero at naromero-desktop bugs]$ f18 -i8 testint8.f90 
[naromero at naromero-desktop bugs]$ ./a.out 
  size of i                     4
[naromero at naromero-desktop bugs]$ pgf90 -i8 testint8.f90 
[naromero at naromero-desktop bugs]$ ./a.out 
  size of i                         8
FORTRAN STOP
[naromero at naromero-desktop bugs]$ f18 -fdefault-integer-8 testint8.f90 
[naromero at naromero-desktop bugs]$ ./a.out 
  size of i                     4

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