[fixup] Add target features test, remove redundant bf16 guard

Author: momchil-velikov

clang/include/clang/Basic/arm_neon.td

@@ -2125,7 +2125,7 @@ let ArchGuard = "defined(__aarch64__)", TargetGuard = "lut" in {
   }
 }
 
-let ArchGuard = "defined(__aarch64__)", TargetGuard = "fp8,bf16,neon" in {
+let ArchGuard = "defined(__aarch64__)", TargetGuard = "fp8,neon" in {
   def VBF1CVT_BF16_MF8        : VInst<"vcvt1_bf16_mf8_fpm",      "(QB).V", "m">;
   def VBF1CVT_LOW_BF16_MF8    : VInst<"vcvt1_low_bf16_mf8_fpm",  "B.V",    "Qm">;
   def VBF2CVTL_BF16_MF8       : VInst<"vcvt2_bf16_mf8_fpm",      "(QB).V", "m">;

clang/test/Sema/aarch64-fp8-intrinsics/acle_neon_fp8_cvt.c

@@ -0,0 +1,43 @@
+// RUN: %clang_cc1 -triple aarch64-linux-gnu -target-feature +neon -target-feature +bf16 -target-feature +faminmax -emit-llvm -verify %s -o /dev/null
+
+// REQUIRES: aarch64-registered-target
+
+#include <arm_neon.h>
+
+void test_features(float16x4_t vd4, float16x8_t vd8, float32x4_t va4,
+                   mfloat8x8_t v8, mfloat8x16_t v16, fpm_t fpm) {
+  (void) vcvt1_bf16_mf8_fpm(v8, fpm);
+  // expected-error@-1 {{'vcvt1_bf16_mf8_fpm' requires target feature 'fp8'}}
+  (void) vcvt1_low_bf16_mf8_fpm(v16, fpm);
+  // expected-error@-1 {{'vcvt1_low_bf16_mf8_fpm' requires target feature 'fp8'}}
+  (void) vcvt2_bf16_mf8_fpm(v8, fpm);
+  // expected-error@-1 {{'vcvt2_bf16_mf8_fpm' requires target feature 'fp8'}}
+  (void) vcvt2_low_bf16_mf8_fpm(v16, fpm);
+  // expected-error@-1 {{'vcvt2_low_bf16_mf8_fpm' requires target feature 'fp8'}}
+
+  (void) vcvt1_high_bf16_mf8_fpm(v16, fpm);
+  // expected-error@-1 {{'vcvt1_high_bf16_mf8_fpm' requires target feature 'fp8'}}
+  (void) vcvt2_high_bf16_mf8_fpm(v16, fpm);
+  // expected-error@-1 {{'vcvt2_high_bf16_mf8_fpm' requires target feature 'fp8'}}
+
+  (void) vcvt1_f16_mf8_fpm(v8, fpm);
+  // expected-error@-1 {{'vcvt1_f16_mf8_fpm' requires target feature 'fp8'}}
+  (void) vcvt1_low_f16_mf8_fpm(v16, fpm);
+  // expected-error@-1 {{'vcvt1_low_f16_mf8_fpm' requires target feature 'fp8'}}
+  (void) vcvt2_f16_mf8_fpm(v8, fpm);
+  // expected-error@-1 {{'vcvt2_f16_mf8_fpm' requires target feature 'fp8'}}
+  (void) vcvt2_low_f16_mf8_fpm(v16, fpm);
+  // expected-error@-1 {{'vcvt2_low_f16_mf8_fpm' requires target feature 'fp8'}}
+  (void) vcvt1_high_f16_mf8_fpm(v16, fpm);
+  // expected-error@-1 {{'vcvt1_high_f16_mf8_fpm' requires target feature 'fp8'}}
+  (void) vcvt2_high_f16_mf8_fpm(v16, fpm);
+  // expected-error@-1 {{'vcvt2_high_f16_mf8_fpm' requires target feature 'fp8'}}
+  (void) vcvt_mf8_f32_fpm(va4, va4, fpm);
+  // expected-error@-1 {{'vcvt_mf8_f32_fpm' requires target feature 'fp8'}}
+  (void) vcvt_high_mf8_f32_fpm(v8, va4, va4, fpm);
+  // expected-error@-1 {{'vcvt_high_mf8_f32_fpm' requires target feature 'fp8'}}
+  (void) vcvt_mf8_f16_fpm(vd4, vd4, fpm);
+  // expected-error@-1 {{'vcvt_mf8_f16_fpm' requires target feature 'fp8'}}
+  (void) vcvtq_mf8_f16_fpm(vd8, vd8, fpm);
+  // expected-error@-1 {{'vcvtq_mf8_f16_fpm' requires target feature 'fp8'}}
+}