COMP: Backport CastXML arm64 Eigen support

Backport https://gitlab.com/libeigen/eigen/-/merge_requests/215/diffs Re: #1959
InsightSoftwareConsortium · Apr 23, 2021 · a3996fe · a3996fe
1 parent 42aa3be
commit a3996fe
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Showing 2 changed files with 8 additions and 2 deletions.
diff --git a/Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/src/Core/arch/NEON/Complex.h b/Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/src/Core/arch/NEON/Complex.h
@@ -17,7 +17,7 @@ namespace internal {
 
 inline uint32x4_t p4ui_CONJ_XOR() {
 // See bug 1325, clang fails to call vld1q_u64.
-#if EIGEN_COMP_CLANG
+#if EIGEN_COMP_CLANG || EIGEN_COMP_CASTXML
   uint32x4_t ret = { 0x00000000, 0x80000000, 0x00000000, 0x80000000 };
   return ret;
 #else
@@ -291,7 +291,7 @@ ptranspose(PacketBlock<Packet2cf,2>& kernel) {
 #if EIGEN_ARCH_ARM64 && !EIGEN_APPLE_DOUBLE_NEON_BUG
 
 // See bug 1325, clang fails to call vld1q_u64.
-#if EIGEN_COMP_CLANG
+#if EIGEN_COMP_CLANG || EIGEN_COMP_CASTXML
   static uint64x2_t p2ul_CONJ_XOR = {0x0, 0x8000000000000000};
 #else
   const uint64_t  p2ul_conj_XOR_DATA[] = { 0x0, 0x8000000000000000 };

diff --git a/Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/src/Core/util/Macros.h b/Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/src/Core/util/Macros.h
@@ -35,6 +35,12 @@
   #define EIGEN_COMP_CLANG 0
 #endif
 
+/// \internal EIGEN_COMP_CASTXML set to 1 if being preprocessed by CastXML
+#if defined(__castxml__)
+    #define EIGEN_COMP_CASTXML 1
+#else
+    #define EIGEN_COMP_CASTXML 0
+#endif
 
 /// \internal EIGEN_COMP_LLVM set to 1 if the compiler backend is llvm
 #if defined(__llvm__)