https://github.com/RKSimon created https://github.com/llvm/llvm-project/pull/162114
This was missed in the earlier f16c/fp16 constexpr patches >From ca975d610c097c1f727c5a65968be8f38be1597f Mon Sep 17 00:00:00 2001 From: Simon Pilgrim <[email protected]> Date: Mon, 6 Oct 2025 17:30:51 +0100 Subject: [PATCH] [X86] avx512fp16intrin.h - allow _mm512_cvtsh_h to be used in constexpr This was missed in the earlier f16c/fp16 constexpr patches --- clang/lib/Headers/avx512fp16intrin.h | 3 ++- clang/test/CodeGen/X86/avx512fp16-builtins.c | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/clang/lib/Headers/avx512fp16intrin.h b/clang/lib/Headers/avx512fp16intrin.h index 4bd798129a25d..d951ba0f05bcd 100644 --- a/clang/lib/Headers/avx512fp16intrin.h +++ b/clang/lib/Headers/avx512fp16intrin.h @@ -41,7 +41,8 @@ typedef _Float16 __m512h_u __attribute__((__vector_size__(64), __aligned__(1))); #define __DEFAULT_FN_ATTRS128_CONSTEXPR __DEFAULT_FN_ATTRS128 #endif -static __inline__ _Float16 __DEFAULT_FN_ATTRS512 _mm512_cvtsh_h(__m512h __a) { +static __inline__ _Float16 __DEFAULT_FN_ATTRS512_CONSTEXPR +_mm512_cvtsh_h(__m512h __a) { return __a[0]; } diff --git a/clang/test/CodeGen/X86/avx512fp16-builtins.c b/clang/test/CodeGen/X86/avx512fp16-builtins.c index 37443d584614d..dbf89b38e262b 100644 --- a/clang/test/CodeGen/X86/avx512fp16-builtins.c +++ b/clang/test/CodeGen/X86/avx512fp16-builtins.c @@ -17,6 +17,7 @@ _Float16 test_mm512_cvtsh_h(__m512h __A) { // CHECK: extractelement <32 x half> %{{.*}}, i32 0 return _mm512_cvtsh_h(__A); } +TEST_CONSTEXPR(_mm512_cvtsh_h((__m512h){-32.0, 31.0, -30.0, 29.0, -28.0, 27.0, -26.0, 25.0, -24.0, 23.0, -22.0, 21.0, -20.0, 19.0, -18.0, 17.0, -16.0, 15.0, -14.0, 13.0, -12.0, 11.0, -10.0, 9.0, -8.0, 7.0, -6.0, 5.0, -4.0, 3.0, -2.0, 1.0}) == -32.0); __m128h test_mm_setzero_ph(void) { // CHECK-LABEL: test_mm_setzero_ph _______________________________________________ cfe-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
