From 4f244e48d59ab8a970b8cc17b52d73d5886508c7 Mon Sep 17 00:00:00 2001
From: tvkai <97374290+tvkai@users.noreply.github.com>
Date: Mon, 29 Aug 2022 22:53:58 +0530
Subject: [PATCH] fix CalculateHash for Big Endian platforms. (#12752)

* fix CalculateHash for Big Endian platforms.
---
 onnxruntime/core/framework/kernel_def_builder.cc | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/onnxruntime/core/framework/kernel_def_builder.cc b/onnxruntime/core/framework/kernel_def_builder.cc
index 3c773248e0..b3fffe602f 100644
--- a/onnxruntime/core/framework/kernel_def_builder.cc
+++ b/onnxruntime/core/framework/kernel_def_builder.cc
@@ -45,7 +45,16 @@ void KernelDef::CalculateHash() {
   // kernel definition)
 
   hash_str(op_name_);
-  hash_int(op_since_version_start_);
+
+  if constexpr (onnxruntime::endian::native == onnxruntime::endian::little) {
+    hash_int(op_since_version_start_);
+  } else {
+    const uint8_t* c = (const uint8_t*)&op_since_version_start_;
+    hash_int((uint32_t)c[0] |
+           (uint32_t)c[1] << 8 |
+           (uint32_t)c[2] << 16 |
+           (uint32_t)c[3] << 24);
+  }
 
   // If we include op_since_version_end_ the hash of an existing op changes when it's superseded.
   // e.g. Unsqueeze 11 had no end version until Unsqueeze 13, at which point the existing op is changed to have