From: Martin Kronbichler <martin.kronbichler@it.uu.se>
Date: Mon, 22 Nov 2021 10:38:02 +0000 (+0100)
Subject: VectorizedArray: Simplify compare_and_apply_mask by blend instruction
X-Git-Tag: v9.4.0-rc1~814^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F12981%2Fhead;p=dealii.git

VectorizedArray: Simplify compare_and_apply_mask by blend instruction
---

diff --git a/include/deal.II/base/vectorization.h b/include/deal.II/base/vectorization.h
index 1b397fec46..93432f5a9e 100644
--- a/include/deal.II/base/vectorization.h
+++ b/include/deal.II/base/vectorization.h
@@ -5214,8 +5214,7 @@ compare_and_apply_mask(const VectorizedArray<float, 8> &left,
     _mm256_cmp_ps(left.data, right.data, static_cast<int>(predicate));
 
   VectorizedArray<float, 8> result;
-  result.data = _mm256_or_ps(_mm256_and_ps(mask, true_values.data),
-                             _mm256_andnot_ps(mask, false_values.data));
+  result.data = _mm256_blendv_ps(false_values.data, true_values.data, mask);
   return result;
 }
 
@@ -5231,8 +5230,7 @@ compare_and_apply_mask(const VectorizedArray<double, 4> &left,
     _mm256_cmp_pd(left.data, right.data, static_cast<int>(predicate));
 
   VectorizedArray<double, 4> result;
-  result.data = _mm256_or_pd(_mm256_and_pd(mask, true_values.data),
-                             _mm256_andnot_pd(mask, false_values.data));
+  result.data = _mm256_blendv_pd(false_values.data, true_values.data, mask);
   return result;
 }