[clang] [Clang][AArch64] Relax SVE bf16 requirement for opaque builtins. (PR #147795)

[Kerry McLaughlin via cfe-commits]

================
@@ -1,87 +0,0 @@
-// REQUIRES: aarch64-registered-target
-
-// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -verify -verify-ignore-unexpected=error,note -emit-llvm -o - %s
-
-#include <arm_sve.h>
-
-void test_bfloat(svbool_t pg, uint64_t u64, int64_t i64, const bfloat16_t *const_bf16_ptr, bfloat16_t *bf16_ptr, svbfloat16_t bf16, svbfloat16x2_t bf16x2, svbfloat16x3_t bf16x3, svbfloat16x4_t bf16x4)
-{
-  // expected-error at +1 {{'svcreate2_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svcreate2_bf16(bf16, bf16);
-  // expected-error at +1 {{'svcreate3_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svcreate3_bf16(bf16, bf16, bf16);
-  // expected-error at +1 {{'svcreate4_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svcreate4_bf16(bf16, bf16, bf16, bf16);
-  // expected-error at +1 {{'svget2_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svget2_bf16(bf16x2, 1);
-  // expected-error at +1 {{'svget3_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svget3_bf16(bf16x3, 1);
-  // expected-error at +1 {{'svget4_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svget4_bf16(bf16x4, 1);
-  // expected-error at +1 {{'svld1_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svld1_bf16(pg, const_bf16_ptr);
-  // expected-error at +1 {{'svld1_vnum_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svld1_vnum_bf16(pg, const_bf16_ptr, i64);
-  // expected-error at +1 {{'svld1rq_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svld1rq_bf16(pg, const_bf16_ptr);
-  // expected-error at +1 {{'svldff1_bf16' needs target feature sve,bf16}}
-  svldff1_bf16(pg, const_bf16_ptr);
-  // expected-error at +1 {{'svldff1_vnum_bf16' needs target feature sve,bf16}}
-  svldff1_vnum_bf16(pg, const_bf16_ptr, i64);
-  // expected-error at +1 {{'svldnf1_bf16' needs target feature sve,bf16}}
-  svldnf1_bf16(pg, const_bf16_ptr);
-  // expected-error at +1 {{'svldnf1_vnum_bf16' needs target feature sve,bf16}}
-  svldnf1_vnum_bf16(pg, const_bf16_ptr, i64);
-  // expected-error at +1 {{'svldnt1_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svldnt1_bf16(pg, const_bf16_ptr);
-  // expected-error at +1 {{'svldnt1_vnum_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svldnt1_vnum_bf16(pg, const_bf16_ptr, i64);
-  // expected-error at +1 {{'svrev_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svrev_bf16(bf16);
-  // expected-error at +1 {{'svset2_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svset2_bf16(bf16x2, 1, bf16);
-  // expected-error at +1 {{'svset3_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svset3_bf16(bf16x3, 1, bf16);
-  // expected-error at +1 {{'svset4_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svset4_bf16(bf16x4, 1, bf16);
-  // expected-error at +1 {{'svst1_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svst1_bf16(pg, bf16_ptr, bf16);
-  // expected-error at +1 {{'svst1_vnum_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svst1_vnum_bf16(pg, bf16_ptr, i64, bf16);
-  // expected-error at +1 {{'svstnt1_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svstnt1_bf16(pg, bf16_ptr, bf16);
-  // expected-error at +1 {{'svstnt1_vnum_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svstnt1_vnum_bf16(pg, bf16_ptr, i64, bf16);
-  // expected-error at +1 {{'svtrn1_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svtrn1_bf16(bf16, bf16);
-  // expected-error at +1 {{'svtrn1q_bf16' needs target feature sve,bf16}}
-  svtrn1q_bf16(bf16, bf16);
-  // expected-error at +1 {{'svtrn2_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svtrn2_bf16(bf16, bf16);
-  // expected-error at +1 {{'svtrn2q_bf16' needs target feature sve,bf16}}
-  svtrn2q_bf16(bf16, bf16);
-  // expected-error at +1 {{'svundef_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svundef_bf16();
-  // expected-error at +1 {{'svundef2_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svundef2_bf16();
-  // expected-error at +1 {{'svundef3_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svundef3_bf16();
-  // expected-error at +1 {{'svundef4_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svundef4_bf16();
-  // expected-error at +1 {{'svuzp1_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svuzp1_bf16(bf16, bf16);
-  // expected-error at +1 {{'svuzp1q_bf16' needs target feature sve,bf16}}
-  svuzp1q_bf16(bf16, bf16);
-  // expected-error at +1 {{'svuzp2_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svuzp2_bf16(bf16, bf16);
-  // expected-error at +1 {{'svuzp2q_bf16' needs target feature sve,bf16}}
-  svuzp2q_bf16(bf16, bf16);
-  // expected-error at +1 {{'svzip1_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svzip1_bf16(bf16, bf16);
-  // expected-error at +1 {{'svzip1q_bf16' needs target feature sve,bf16}}
-  svzip1q_bf16(bf16, bf16);
-  // expected-error at +1 {{'svzip2_bf16' needs target feature (sve,bf16)|(sme,bf16)}}
-  svzip2_bf16(bf16, bf16);
-  // expected-error at +1 {{'svzip2q_bf16' needs target feature sve,bf16}}
-  svzip2q_bf16(bf16, bf16);
-}
----------------
kmclaughlin-arm wrote:

>  I don't know why both files do not contain any legitimate +bf16 related builtins so figured they're covered elsewhere

I couldn't find tests for the legitimate builtins anywhere else, but I could find similar for FP8 so maybe these should be replaced with tests for the instructions which do need +bf16?

https://github.com/llvm/llvm-project/pull/147795