Adding source kind test

Author: Renaud-K

flang/test/Analysis/AliasAnalysis/source-kind.fir

@@ -0,0 +1,25 @@
+// RUN: fir-opt %s -pass-pipeline='builtin.module(func.func(test-fir-alias-analysis))' -debug-only=fir-alias-analysis 2>&1 | FileCheck %s
+
+// CHECK-LABEL: Testing : "_QFPtest"
+
+// Checking that the source kind of a load of a load is SourceKind::Indirect
+// CHECK: {test.ptr = "load_load"}
+// CHECK-NEXT: SourceKind: Indirect
+
+// Checking that the source kind of a load of an arg is SourceKind::Argument
+// CHECK: {test.ptr = "load_arg"}
+// CHECK-NEXT: SourceKind: Argument
+
+func.func @_QFPtest(%arg0: !fir.ref<!fir.box<!fir.ptr<f32>>> ) attributes {test.ptr = "func"} {
+  
+  %0 = fir.alloca !fir.llvm_ptr<!fir.box<!fir.ptr<f32>>>
+  %1 = fir.convert %arg0 : (!fir.ref<!fir.box<!fir.ptr<f32>>>) -> !fir.llvm_ptr<!fir.box<!fir.ptr<f32>>>
+  fir.store %1 to %0 : !fir.ref<!fir.llvm_ptr<!fir.box<!fir.ptr<f32>>>>
+  %2 = fir.load %0 : !fir.ref<!fir.llvm_ptr<!fir.box<!fir.ptr<f32>>>>
+  %3 = fir.convert %2 : (!fir.llvm_ptr<!fir.box<!fir.ptr<f32>>>) -> !fir.ref<!fir.box<!fir.ptr<f32>>>
+  %15 = fir.load %3 : !fir.ref<!fir.box<!fir.ptr<f32>>>
+  %16 = fir.box_addr %15 {test.ptr = "load_load"} : (!fir.box<!fir.ptr<f32>>) -> !fir.ptr<f32>
+  %17 = fir.load %arg0 : !fir.ref<!fir.box<!fir.ptr<f32>>>
+  %18 = fir.box_addr %17 {test.ptr = "load_arg"} : (!fir.box<!fir.ptr<f32>>) -> !fir.ptr<f32>
+  return
+}