From 07dedda93954646d9ed8bf3d468a89634f88f112 Mon Sep 17 00:00:00 2001
From: jimfly01 <jim.flynn@arm.com>
Date: Tue, 9 Oct 2018 12:29:41 +0100
Subject: IVGCVSW-1929: Optimize function signature change

* Optimize now returns reasons for failure

!armnn:152481

Change-Id: I1cd7f5796b3c469e9baecbed80e392ac74e40ef4
---
 ArmnnDriverImpl.cpp | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/ArmnnDriverImpl.cpp b/ArmnnDriverImpl.cpp
index 5d213659..267574c1 100644
--- a/ArmnnDriverImpl.cpp
+++ b/ArmnnDriverImpl.cpp
@@ -150,12 +150,14 @@ Return<ErrorStatus> ArmnnDriverImpl<HalPolicy>::prepareModel(
     armnn::OptimizerOptions OptOptions;
     OptOptions.m_ReduceFp32ToFp16 = float32ToFloat16;
 
+    std::vector<std::string> errMessages;
     try
     {
         optNet = armnn::Optimize(*modelConverter.GetINetwork(),
                                  {options.GetComputeDevice()},
                                  runtime->GetDeviceSpec(),
-                                 OptOptions);
+                                 OptOptions,
+                                 errMessages);
     }
     catch (armnn::Exception &e)
     {
@@ -168,8 +170,13 @@ Return<ErrorStatus> ArmnnDriverImpl<HalPolicy>::prepareModel(
     // Check that the optimized network is valid.
     if (!optNet)
     {
+        stringstream message;
+        message << "ArmnnDriverImpl::prepareModel: Invalid optimized network";
+        for (const string& msg : errMessages) {
+            message << "\n" << msg;
+        }
         FailPrepareModel(ErrorStatus::GENERAL_FAILURE,
-                         "ArmnnDriverImpl::prepareModel: Invalid optimized network", cb);
+                         message.str(), cb);
         return ErrorStatus::NONE;
     }
 
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