[clang] [llvm] [flang] [AArch64][Driver] Better handling of target feature dependencies (PR #78270)

[David Spickett via llvm-commits]

================
@@ -5,4 +5,4 @@
 // RUN: %clang --target=aarch64 -march=armv8.5a+bf16+nobf16 -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV85A-BF16-NO-BF16 %s
 // GENERICV85A-BF16-NO-BF16: "-target-feature" "-bf16"
 // RUN: %clang --target=aarch64 -march=armv8.5a+bf16+sve -### -c %s 2>&1 | FileCheck -check-prefixes=GENERICV85A-BF16-SVE %s
-// GENERICV85A-BF16-SVE: "-target-feature" "+bf16" "-target-feature" "+sve"
+// GENERICV85A-BF16-SVE: "-target-feature" "+bf16"{{.*}} "-target-feature" "+sve"
----------------
DavidSpickett wrote:

In general, why are these `{{.*}}` now needed in many tests? Is it that we're listing features we didn't before, because before they were expanded in the backend?

Features that are unrelated to, in this case, bf16.

https://github.com/llvm/llvm-project/pull/78270