From cf3616b2c00ba3b1e9574ad77c2cd4ec363adadc Mon Sep 17 00:00:00 2001
From: Konstantinos Margaritis <markos@codex.gr>
Date: Mon, 28 Jun 2010 21:24:55 +0300
Subject: [PATCH] AltiVec signed integer pmadd removed, proved to be 2x slower
 than the scalar trait(!).

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

diff --git a/Eigen/src/Core/arch/AltiVec/PacketMath.h b/Eigen/src/Core/arch/AltiVec/PacketMath.h
index 2feca365a..e3454b554 100644
--- a/Eigen/src/Core/arch/AltiVec/PacketMath.h
+++ b/Eigen/src/Core/arch/AltiVec/PacketMath.h
@@ -174,6 +174,8 @@ template<> EIGEN_STRONG_INLINE Packet4f ei_pnegate(const Packet4f& a) { return e
 template<> EIGEN_STRONG_INLINE Packet4i ei_pnegate(const Packet4i& a) { return ei_psub<Packet4i>(ei_p4i_ZERO, a); }
 
 template<> EIGEN_STRONG_INLINE Packet4f ei_pmul<Packet4f>(const Packet4f& a, const Packet4f& b) { return vec_madd(a,b,ei_p4f_ZERO); }
+/* Commented out: it's actually slower than processing it scalar
+ *
 template<> EIGEN_STRONG_INLINE Packet4i ei_pmul<Packet4i>(const Packet4i& a, const Packet4i& b)
 {
   // Detailed in: http://freevec.org/content/32bit_signed_integer_multiplication_altivec
@@ -207,6 +209,7 @@ template<> EIGEN_STRONG_INLINE Packet4i ei_pmul<Packet4i>(const Packet4i& a, con
 
   return prod;
 }
+*/
 template<> EIGEN_STRONG_INLINE Packet4f ei_pdiv<Packet4f>(const Packet4f& a, const Packet4f& b)
 {
   Packet4f t, y_0, y_1, res;