From: Maksim Shabunin <maksim.shabunin@gmail.com>
Date: Sun, 25 Feb 2018 10:32:27 +0000 (+0300)
Subject: CPU dispatching: additional AVX-512 check for mingw-w64
X-Git-Tag: accepted/tizen/6.0/unified/20201030.111113~1^2~771^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f0c0e0c6fa198ed3700be4a2bd8f3cc7d70fc127;p=platform%2Fupstream%2Fopencv.git

CPU dispatching: additional AVX-512 check for mingw-w64
---

diff --git a/cmake/checks/cpu_avx512.cpp b/cmake/checks/cpu_avx512.cpp
index d0898ab..ebb10c7 100644
--- a/cmake/checks/cpu_avx512.cpp
+++ b/cmake/checks/cpu_avx512.cpp
@@ -3,6 +3,9 @@
 void test()
 {
     __m512i zmm = _mm512_setzero_si512();
+#if defined __GNUC__ && defined __x86_64__
+    asm volatile ("" : : : "zmm16", "zmm17", "zmm18", "zmm19");
+#endif
 }
 #else
 #error "AVX512 is not supported"
diff --git a/cmake/checks/cpu_avx512skx.cpp b/cmake/checks/cpu_avx512skx.cpp
index 375b62e..2faa2bf 100644
--- a/cmake/checks/cpu_avx512skx.cpp
+++ b/cmake/checks/cpu_avx512skx.cpp
@@ -7,6 +7,9 @@ void test()
     __m256i b = _mm256_abs_epi64(a); // VL
     __m512i c = _mm512_abs_epi8(zmm); // BW
     __m512i d = _mm512_broadcast_i32x8(b); // DQ
+#if defined __GNUC__ && defined __x86_64__
+    asm volatile ("" : : : "zmm16", "zmm17", "zmm18", "zmm19");
+#endif
 }
 #else
 #error "AVX512-SKX is not supported"