From 23469c3cdaeeeb7b9f31e2d0971cddd114f1587d Mon Sep 17 00:00:00 2001
From: Andreas Krebbel <krebbel@linux.ibm.com>
Date: Tue, 26 Oct 2021 15:29:30 +0200
Subject: [PATCH] ZVector: Move alignas qualifier to come first

We currently have plenty of type definitions with the alignment
qualifier coming after the type.  The compiler warns about ignoring
them:
int EIGEN_ALIGN16 ai[4];

Turn this into:
EIGEN_ALIGN16 int ai[4];


(cherry picked from commit 8faafc3aaa2b45e234cfe0bef085c1134ceffc42)
---
 Eigen/src/Core/arch/ZVector/Complex.h    |  8 ++++----
 Eigen/src/Core/arch/ZVector/PacketMath.h | 24 ++++++++++++------------
 2 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/Eigen/src/Core/arch/ZVector/Complex.h b/Eigen/src/Core/arch/ZVector/Complex.h
index e0acedefbd..6c67cfe058 100644
--- a/Eigen/src/Core/arch/ZVector/Complex.h
+++ b/Eigen/src/Core/arch/ZVector/Complex.h
@@ -160,7 +160,7 @@ template<> EIGEN_STRONG_INLINE void prefetch<std::complex<double> >(const std::c
 
 template<> EIGEN_STRONG_INLINE std::complex<double>  pfirst<Packet1cd>(const Packet1cd& a)
 {
-  std::complex<double> EIGEN_ALIGN16 res;
+  EIGEN_ALIGN16 std::complex<double> res;
   pstore<std::complex<double> >(&res, a);
 
   return res;
@@ -205,7 +205,7 @@ template<> EIGEN_STRONG_INLINE void pstoreu<std::complex<float> >(std::complex<f
 
 template<> EIGEN_STRONG_INLINE std::complex<float>  pfirst<Packet2cf>(const Packet2cf& a)
 {
-  std::complex<float> EIGEN_ALIGN16 res[2];
+  EIGEN_ALIGN16 std::complex<float> res[2];
   pstore<std::complex<float> >(res, a);
 
   return res[0];
@@ -235,14 +235,14 @@ template<> EIGEN_STRONG_INLINE Packet2cf pset1<Packet2cf>(const std::complex<flo
 
 template<> EIGEN_DEVICE_FUNC inline Packet2cf pgather<std::complex<float>, Packet2cf>(const std::complex<float>* from, Index stride)
 {
-  std::complex<float> EIGEN_ALIGN16 af[2];
+  EIGEN_ALIGN16 std::complex<float> af[2];
   af[0] = from[0*stride];
   af[1] = from[1*stride];
   return pload<Packet2cf>(af);
 }
 template<> EIGEN_DEVICE_FUNC inline void pscatter<std::complex<float>, Packet2cf>(std::complex<float>* to, const Packet2cf& from, Index stride)
 {
-  std::complex<float> EIGEN_ALIGN16 af[2];
+  EIGEN_ALIGN16 std::complex<float> af[2];
   pstore<std::complex<float> >((std::complex<float> *) af, from);
   to[0*stride] = af[0];
   to[1*stride] = af[1];
diff --git a/Eigen/src/Core/arch/ZVector/PacketMath.h b/Eigen/src/Core/arch/ZVector/PacketMath.h
index 208e4b167c..a7b59c80ed 100755
--- a/Eigen/src/Core/arch/ZVector/PacketMath.h
+++ b/Eigen/src/Core/arch/ZVector/PacketMath.h
@@ -358,7 +358,7 @@ pbroadcast4<Packet2d>(const double *a,
 
 template<> EIGEN_DEVICE_FUNC inline Packet4i pgather<int, Packet4i>(const int* from, Index stride)
 {
-  int EIGEN_ALIGN16 ai[4];
+  EIGEN_ALIGN16 int ai[4];
   ai[0] = from[0*stride];
   ai[1] = from[1*stride];
   ai[2] = from[2*stride];
@@ -368,7 +368,7 @@ template<> EIGEN_DEVICE_FUNC inline Packet4i pgather<int, Packet4i>(const int* f
 
 template<> EIGEN_DEVICE_FUNC inline Packet2d pgather<double, Packet2d>(const double* from, Index stride)
 {
-  double EIGEN_ALIGN16 af[2];
+  EIGEN_ALIGN16 double af[2];
   af[0] = from[0*stride];
   af[1] = from[1*stride];
  return pload<Packet2d>(af);
@@ -376,7 +376,7 @@ template<> EIGEN_DEVICE_FUNC inline Packet2d pgather<double, Packet2d>(const dou
 
 template<> EIGEN_DEVICE_FUNC inline void pscatter<int, Packet4i>(int* to, const Packet4i& from, Index stride)
 {
-  int EIGEN_ALIGN16 ai[4];
+  EIGEN_ALIGN16 int ai[4];
   pstore<int>((int *)ai, from);
   to[0*stride] = ai[0];
   to[1*stride] = ai[1];
@@ -386,7 +386,7 @@ template<> EIGEN_DEVICE_FUNC inline void pscatter<int, Packet4i>(int* to, const
 
 template<> EIGEN_DEVICE_FUNC inline void pscatter<double, Packet2d>(double* to, const Packet2d& from, Index stride)
 {
-  double EIGEN_ALIGN16 af[2];
+  EIGEN_ALIGN16 double af[2];
   pstore<double>(af, from);
   to[0*stride] = af[0];
   to[1*stride] = af[1];
@@ -460,8 +460,8 @@ template<> EIGEN_STRONG_INLINE void pstoreu<double>(double*  to, const Packet2d&
 template<> EIGEN_STRONG_INLINE void prefetch<int>(const int*       addr) { EIGEN_ZVECTOR_PREFETCH(addr); }
 template<> EIGEN_STRONG_INLINE void prefetch<double>(const double* addr) { EIGEN_ZVECTOR_PREFETCH(addr); }
 
-template<> EIGEN_STRONG_INLINE int    pfirst<Packet4i>(const Packet4i& a) { int    EIGEN_ALIGN16 x[4]; pstore(x, a); return x[0]; }
-template<> EIGEN_STRONG_INLINE double pfirst<Packet2d>(const Packet2d& a) { double EIGEN_ALIGN16 x[2]; pstore(x, a); return x[0]; }
+template<> EIGEN_STRONG_INLINE int    pfirst<Packet4i>(const Packet4i& a) { EIGEN_ALIGN16 int    x[4]; pstore(x, a); return x[0]; }
+template<> EIGEN_STRONG_INLINE double pfirst<Packet2d>(const Packet2d& a) { EIGEN_ALIGN16 double x[2]; pstore(x, a); return x[0]; }
 
 template<> EIGEN_STRONG_INLINE Packet4i preverse(const Packet4i& a)
 {
@@ -639,7 +639,7 @@ pbroadcast4<Packet4f>(const float *a,
 
 template<> EIGEN_DEVICE_FUNC inline Packet4f pgather<float, Packet4f>(const float* from, Index stride)
 {
-  float EIGEN_ALIGN16 ai[4];
+  EIGEN_ALIGN16 float ai[4];
   ai[0] = from[0*stride];
   ai[1] = from[1*stride];
   ai[2] = from[2*stride];
@@ -649,7 +649,7 @@ template<> EIGEN_DEVICE_FUNC inline Packet4f pgather<float, Packet4f>(const floa
 
 template<> EIGEN_DEVICE_FUNC inline void pscatter<float, Packet4f>(float* to, const Packet4f& from, Index stride)
 {
-  float EIGEN_ALIGN16 ai[4];
+  EIGEN_ALIGN16 float ai[4];
   pstore<float>((float *)ai, from);
   to[0*stride] = ai[0];
   to[1*stride] = ai[1];
@@ -785,7 +785,7 @@ template<> EIGEN_STRONG_INLINE Packet4f ploaddup<Packet4f>(const float*    from)
   return p;
 }
 
-template<> EIGEN_STRONG_INLINE float  pfirst<Packet4f>(const Packet4f& a) { float  EIGEN_ALIGN16 x[2]; vec_st2f(a.v4f[0], &x[0]); return x[0]; }
+template<> EIGEN_STRONG_INLINE float  pfirst<Packet4f>(const Packet4f& a) { EIGEN_ALIGN16 float x[2]; vec_st2f(a.v4f[0], &x[0]); return x[0]; }
 
 template<> EIGEN_STRONG_INLINE Packet4f preverse(const Packet4f& a)
 {
@@ -943,7 +943,7 @@ pbroadcast4<Packet4f>(const float *a,
 
 template<> EIGEN_DEVICE_FUNC inline Packet4f pgather<float, Packet4f>(const float* from, Index stride)
 {
-  float EIGEN_ALIGN16 af[4];
+  EIGEN_ALIGN16 float af[4];
   af[0] = from[0*stride];
   af[1] = from[1*stride];
   af[2] = from[2*stride];
@@ -953,7 +953,7 @@ template<> EIGEN_DEVICE_FUNC inline Packet4f pgather<float, Packet4f>(const floa
 
 template<> EIGEN_DEVICE_FUNC inline void pscatter<float, Packet4f>(float* to, const Packet4f& from, Index stride)
 {
-  float EIGEN_ALIGN16 af[4];
+  EIGEN_ALIGN16 float af[4];
   pstore<float>((float*)af, from);
   to[0*stride] = af[0];
   to[1*stride] = af[1];
@@ -978,7 +978,7 @@ template<> EIGEN_STRONG_INLINE Packet4f pround<Packet4f> (const Packet4f& a) { r
 template<> EIGEN_STRONG_INLINE Packet4f pceil<Packet4f>  (const Packet4f& a) { return vec_ceil(a); }
 template<> EIGEN_STRONG_INLINE Packet4f pfloor<Packet4f> (const Packet4f& a) { return vec_floor(a); }
 template<> EIGEN_STRONG_INLINE Packet4f pabs<Packet4f>   (const Packet4f& a) { return vec_abs(a); }
-template<> EIGEN_STRONG_INLINE float pfirst<Packet4f>(const Packet4f& a) { float EIGEN_ALIGN16 x[4]; pstore(x, a); return x[0]; }
+template<> EIGEN_STRONG_INLINE float pfirst<Packet4f>(const Packet4f& a) { EIGEN_ALIGN16 float x[4]; pstore(x, a); return x[0]; }
 
 template<> EIGEN_STRONG_INLINE Packet4f ploaddup<Packet4f>(const float* from)
 {
-- 
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