Respond to review comments originally from llvm#134366

These changes were originally opened under llvm#134366 but were
moved to this PR to allow me to drive further changes as I was
the original author.

This commit responds to comments made on the original PR.

Author: Stylie777

clang/docs/ReleaseNotes.rst

@@ -39,8 +39,8 @@ Potentially Breaking Changes
   such as when performing member access on a '[[deprecated]]' type alias.
   (#GH58547)
 - For ARM targets, when using cc1as, the features included in the selected CPU or
-  Arch's FPU are now loaded and utilized. If you wish not to use a specific feature,
-  this will need appending to the command line used.
+  Architecture's FPU are now loaded and utilized. If you wish not to use a specific feature,
+  the relevant ``+no`` option will need to be amended to the command line option.
 
 C/C++ Language Potentially Breaking Changes
 -------------------------------------------

clang/test/Driver/armv7-default-neon.s

@@ -3,6 +3,10 @@
 
 // REQUIRES: arm-registered-target
 // RUN: %clang -c -target armv7-apple-darwin -o /dev/null %s
+// RUN: %clang -c -target armv7-apple-darwin -o /dev/null %s -### 2>&1 | FileCheck --check-prefix=CHECK-TARGET-FEATURES %s
 // RUN: %clang -c -target armv7-windows -o /dev/null %s
+// RUN: %clang -c -target armv7-windows -o /dev/null %s -### 2>&1 | FileCheck --check-prefix=CHECK-TARGET-FEATURES %s
+
+// CHECK-TARGET-FEATURES: "-target-feature" "+neon"
 
 vadd.i32 q0, q0, q0

clang/test/Driver/armv7s-default-vfpv4.s

@@ -2,5 +2,8 @@
 
 // REQUIRES: arm-registered-target
 // RUN: %clang -c -target armv7s-apple-darwin -o /dev/null %s
+// RUN: %clang -c -target armv7s-apple-darwin -o /dev/null %s -### 2>&1 | FileCheck --check-prefix=CHECK-TARGET-FEATURES %s
+
+// CHECK-TARGET-FEATURES: "-target-feature" "+vfp4"
 
 vfma.f32 q1, q2, q3