Add USE_SIMD_FALLBACK build in jenkins

Jenkinsfile

@@ -48,6 +48,18 @@ pipeline {
                 recordIssues(tools: [clang()])
             }
         }
+        stage('SIMD fallback') {
+            agent {
+                dockerfile {
+                    args '-v /home/jenkins/ccache:/ccache'
+                    reuseNode true
+                }
+            }
+            steps {
+                CleanBuildAndTest("-DUSE_SIMD_FALLBACK=ON")
+                recordIssues(tools: [clang()])
+            }
+        }
         stage('Release [gcc]') {
             agent {
                 dockerfile {