[flang-commits] [clang] [flang] [flang][Driver] Support -print-supported-extensions (PR #117402)

[Tarun Prabhu via flang-commits]

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@@ -0,0 +1,34 @@
+! REQUIRES: arm-registered-target
+
+! RUN: %flang --target=arm-linux-gnu --print-supported-extensions 2>&1 \
+! RUN:   | FileCheck --strict-whitespace --implicit-check-not=FEAT_ %s
+
+! CHECK: All available -march extensions for ARM
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tarunprabhu wrote:

It makes sense to shared these and I'll change this PR to do that. Sharing the `printSupportedCPUs` (which is currently duplicated) will be done separately. 

Is `clang/lib/Driver/ToolChains/CommonArgs.cpp` an appropriate place for the shared code? Is it not intended to be "private" to the toolchains? I don't see anything more appropriate, but we're probably in uncharted territory here.

https://github.com/llvm/llvm-project/pull/117402