From 5bc0a7583fed3328f176b69419ae12a063f2f4e0 Mon Sep 17 00:00:00 2001 From: Qiyu8 Date: Wed, 11 Nov 2020 15:18:01 +0800 Subject: [PATCH] only FMA3 and vector larger than 128 have positive effects. --- kernel/x86_64/srot.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/x86_64/srot.c b/kernel/x86_64/srot.c index d9583cdfa..4273f7fe7 100644 --- a/kernel/x86_64/srot.c +++ b/kernel/x86_64/srot.c @@ -13,7 +13,7 @@ static void srot_kernel(BLASLONG n, FLOAT *x, FLOAT *y, FLOAT c, FLOAT s) { BLASLONG i = 0; -#if V_SIMD +#if V_SIMD && (HAVE_FMA3 || V_SIMD > 128) const int vstep = v_nlanes_f32; const int unrollx4 = n & (-vstep * 4); const int unrollx = n & -vstep;