From 0a4b82a8ffd52107e9bfd38ba26daa8f75643087 Mon Sep 17 00:00:00 2001
From: Cary Phillips <cary@ilm.com>
Date: Mon, 10 Jul 2023 01:59:00 -0700
Subject: [PATCH] Add OPENEXR_MISSING_ARM_VLD1 workaround to
 internal_dwa_simd.h (#1482)

Addresses #1477

Signed-off-by: Cary Phillips <cary@ilm.com>
---
 src/lib/OpenEXRCore/internal_dwa_simd.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/lib/OpenEXRCore/internal_dwa_simd.h b/src/lib/OpenEXRCore/internal_dwa_simd.h
index 3f413e46d8..384e06e9ea 100644
--- a/src/lib/OpenEXRCore/internal_dwa_simd.h
+++ b/src/lib/OpenEXRCore/internal_dwa_simd.h
@@ -51,6 +51,20 @@
 #include <arm_neon.h>
 #endif
 
+#include "OpenEXRConfigInternal.h"
+#ifdef OPENEXR_MISSING_ARM_VLD1
+/* Workaround for missing vld1q_f32_x2 in older gcc versions.  */
+
+__extension__ extern __inline float32x4x2_t
+    __attribute__ ((__always_inline__, __gnu_inline__, __artificial__))
+    vld1q_f32_x2 (const float32_t* __a)
+{
+    float32x4x2_t ret;
+    asm ("ld1 {%S0.4s - %T0.4s}, [%1]" : "=w"(ret) : "r"(__a) :);
+    return ret;
+}
+#endif
+
 //
 // Color space conversion, Inverse 709 CSC, Y'CbCr -> R'G'B'
 //