[clang] [Clang][ARM] Ensure FPU Features are parsed when targeting `cc1as` (PR #134612)

[David Spickett via cfe-commits]

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@@ -0,0 +1,32 @@
+// REQUIRES: arm-registered-target
+// Ensures that when targeting an ARM target with an Asm file, clang
+// collects the features from the FPU. This is critical in the
+// activation of NEON for supported targets. The Cortex-R52 will be
+// used and tested for VFP and NEON Support
+
+// RUN: %clang -target arm-none-eabi -mcpu=cortex-r52 -c %s -o /dev/null | count 0
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DavidSpickett wrote:

The purpose of this line is what exactly?

If we have errors the RUN line will fail because clang returns non-zero, so perhaps a check for warnings? Should you be piping stderr as well if that's the case?

https://github.com/llvm/llvm-project/pull/134612