From 9ea3034b584962c763d970d49b897e69dadf1061 Mon Sep 17 00:00:00 2001 From: Folkert de Vries Date: Sat, 31 Jan 2026 17:15:16 +0100 Subject: [PATCH] powerpc: implement `vnmsubfp` using `intrinsics::simd` --- .../stdarch/crates/core_arch/src/powerpc/altivec.rs | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/library/stdarch/crates/core_arch/src/powerpc/altivec.rs b/library/stdarch/crates/core_arch/src/powerpc/altivec.rs index fb1a9d8ed9e2..9d54abc5833b 100644 --- a/library/stdarch/crates/core_arch/src/powerpc/altivec.rs +++ b/library/stdarch/crates/core_arch/src/powerpc/altivec.rs @@ -129,8 +129,6 @@ unsafe extern "C" { b: vector_signed_short, c: vector_signed_int, ) -> vector_signed_int; - #[link_name = "llvm.ppc.altivec.vnmsubfp"] - fn vnmsubfp(a: vector_float, b: vector_float, c: vector_float) -> vector_float; #[link_name = "llvm.ppc.altivec.vsum2sws"] fn vsum2sws(a: vector_signed_int, b: vector_signed_int) -> vector_signed_int; #[link_name = "llvm.ppc.altivec.vsum4ubs"] @@ -1881,9 +1879,9 @@ mod sealed { #[inline] #[target_feature(enable = "altivec")] - #[cfg_attr(test, assert_instr(vnmsubfp))] - unsafe fn vec_vnmsubfp(a: vector_float, b: vector_float, c: vector_float) -> vector_float { - vnmsubfp(a, b, c) + #[cfg_attr(test, assert_instr(xvnmsubasp))] + pub unsafe fn vec_vnmsubfp(a: vector_float, b: vector_float, c: vector_float) -> vector_float { + simd_neg(simd_fma(a, b, simd_neg(c))) } #[inline] @@ -4281,7 +4279,7 @@ pub unsafe fn vec_madd(a: vector_float, b: vector_float, c: vector_float) -> vec #[target_feature(enable = "altivec")] #[unstable(feature = "stdarch_powerpc", issue = "111145")] pub unsafe fn vec_nmsub(a: vector_float, b: vector_float, c: vector_float) -> vector_float { - vnmsubfp(a, b, c) + sealed::vec_vnmsubfp(a, b, c) } /// Vector Select