From: Martin Kaesberger <git@skipfish.de>
Date: Mon, 15 Jun 2020 00:23:22 +0000 (+0200)
Subject: [PATCH 5/9] emit an emms instruction after using the mmx extension
X-Git-Tag: archive/raspbian/2.3.0-3+rpi1^2~8
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=9aebb31ebc1a7db1946658505148d68abeb8864a;p=volk.git

[PATCH 5/9] emit an emms instruction after using the mmx extension


Gbp-Pq: Name 0005-emit-an-emms-instruction-after-using-the-mmx-extensi.patch
---

diff --git a/kernels/volk/volk_16i_32fc_dot_prod_32fc.h b/kernels/volk/volk_16i_32fc_dot_prod_32fc.h
index 2635649..9246259 100644
--- a/kernels/volk/volk_16i_32fc_dot_prod_32fc.h
+++ b/kernels/volk/volk_16i_32fc_dot_prod_32fc.h
@@ -209,6 +209,8 @@ static inline void volk_16i_32fc_dot_prod_32fc_u_sse(lv_32fc_t* result,
         bPtr += 16;
     }
 
+    _mm_empty(); // clear the mmx technology state
+
     dotProdVal0 = _mm_add_ps(dotProdVal0, dotProdVal1);
     dotProdVal0 = _mm_add_ps(dotProdVal0, dotProdVal2);
     dotProdVal0 = _mm_add_ps(dotProdVal0, dotProdVal3);
@@ -484,6 +486,8 @@ static inline void volk_16i_32fc_dot_prod_32fc_a_sse(lv_32fc_t* result,
         bPtr += 16;
     }
 
+    _mm_empty(); // clear the mmx technology state
+
     dotProdVal0 = _mm_add_ps(dotProdVal0, dotProdVal1);
     dotProdVal0 = _mm_add_ps(dotProdVal0, dotProdVal2);
     dotProdVal0 = _mm_add_ps(dotProdVal0, dotProdVal3);