From 3791ac8a1a5342a84f2816a5d31201fb8c1ee51a Mon Sep 17 00:00:00 2001
From: Chip Kerchner <chip.kerchner@ibm.com>
Date: Wed, 28 Jun 2023 17:57:21 +0000
Subject: [PATCH] Fix supportsMMA to obey EIGEN_ALTIVEC_MMA_DYNAMIC_DISPATCH
 compilation flag and compiler support.

---
 Eigen/src/Core/arch/AltiVec/MatrixProduct.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Eigen/src/Core/arch/AltiVec/MatrixProduct.h b/Eigen/src/Core/arch/AltiVec/MatrixProduct.h
index e86cc5b4f..54a7195f8 100644
--- a/Eigen/src/Core/arch/AltiVec/MatrixProduct.h
+++ b/Eigen/src/Core/arch/AltiVec/MatrixProduct.h
@@ -2714,10 +2714,10 @@ EIGEN_ALWAYS_INLINE bool supportsMMA()
 #if defined(EIGEN_ALTIVEC_MMA_ONLY)
   return true;
 #else
-#if EIGEN_COMP_LLVM
-  return false;  // No dynamic dispatch for LLVM
-#else
+#if defined(EIGEN_ALTIVEC_MMA_DYNAMIC_DISPATCH) && __has_builtin(__builtin_cpu_supports)
   return __builtin_cpu_supports ("arch_3_1") && __builtin_cpu_supports ("mma");
+#else
+  return false;  // No dynamic dispatch for LLVM
 #endif
 #endif
 }