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powerpc: use the simd_fma intrinsic for vec_madd #1734

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Mar 3, 2025
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powerpc: use the simd_fma intrinsic for vec_madd #1734

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8 changes: 3 additions & 5 deletions crates/core_arch/src/powerpc/altivec.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -129,8 +129,6 @@ unsafe extern "C" {
b: vector_signed_short,
c: vector_signed_int,
) -> vector_signed_int;
#[link_name = "llvm.ppc.altivec.vmaddfp"]
fn vmaddfp(a: vector_float, b: vector_float, c: vector_float) -> vector_float;
#[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"]
Expand Down Expand Up @@ -1869,8 +1867,8 @@ mod sealed {
#[inline]
#[target_feature(enable = "altivec")]
#[cfg_attr(test, assert_instr(vmaddfp))]
unsafe fn vec_vmaddfp(a: vector_float, b: vector_float, c: vector_float) -> vector_float {
vmaddfp(a, b, c)
pub unsafe fn vec_vmaddfp(a: vector_float, b: vector_float, c: vector_float) -> vector_float {
simd_fma(a, b, c)
}

#[inline]
Expand Down Expand Up @@ -4234,7 +4232,7 @@ where
#[target_feature(enable = "altivec")]
#[unstable(feature = "stdarch_powerpc", issue = "111145")]
pub unsafe fn vec_madd(a: vector_float, b: vector_float, c: vector_float) -> vector_float {
vmaddfp(a, b, c)
sealed::vec_vmaddfp(a, b, c)
}

/// Vector Negative Multiply Subtract
Expand Down