[clang] [flang] [flang] Added driver options for arrays repacking. (PR #134002)

[Tarun Prabhu via cfe-commits]

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+! Test forwarding just the forwarding of -frepack-arrays-contiguity options:
+! RUN: %flang -frepack-arrays-contiguity=whole %s -### -fsyntax-only 2>&1 | FileCheck --check-prefix=WHOLECMD %s
+! RUN: %flang -frepack-arrays-contiguity=innermost %s -### -fsyntax-only 2>&1 | FileCheck --check-prefix=INNERMOSTCMD %s
+! RUN: %flang -frepack-arrays-contiguity=innermost -frepack-arrays-contiguity=whole %s -### -fsyntax-only 2>&1 | FileCheck --check-prefix=WHOLECMD %s
+! RUN: %flang -frepack-arrays-contiguity=whole -frepack-arrays-contiguity=innermost %s -### -fsyntax-only 2>&1 | FileCheck --check-prefix=INNERMOSTCMD %s
+
+! Test proper setting of the lowering options:
+! RUN: %flang_fc1 -frepack-arrays -frepack-arrays-contiguity=whole %s -emit-hlfir -o - | FileCheck --check-prefix=WHOLE %s
+! RUN: %flang_fc1 -frepack-arrays-contiguity=whole %s -emit-hlfir -o - | FileCheck --check-prefix=NOREPACK %s
+! RUN: %flang_fc1 -frepack-arrays -frepack-arrays-contiguity=innermost %s -emit-hlfir -o - | FileCheck --check-prefix=INNERMOST %s
+! RUN: %flang_fc1 -frepack-arrays-contiguity=innermost %s -emit-hlfir -o - | FileCheck --check-prefix=NOREPACK %s
+
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tarunprabhu wrote:

Could we also add a test to check that an invalid option value raises an error? Perhaps also for a missing value.

https://github.com/llvm/llvm-project/pull/134002