Add test for passing OpPrintingFlags to LocationSnapshotPass in mlir-opt

Author: jungmair

mlir/test/Transforms/location-snapshot.mlir

@@ -1,5 +1,6 @@
 // RUN: mlir-opt -allow-unregistered-dialect -snapshot-op-locations='filename=%/t' -mlir-print-local-scope -mlir-print-debuginfo %s | FileCheck %s -DFILE=%/t
 // RUN: mlir-opt -allow-unregistered-dialect -snapshot-op-locations='filename=%/t tag='tagged'' -mlir-print-local-scope -mlir-print-debuginfo %s | FileCheck %s --check-prefix=TAG -DFILE=%/t
+// RUN: mlir-opt -allow-unregistered-dialect -snapshot-op-locations='filename=%/t print-debuginfo' -mlir-print-local-scope -mlir-print-debuginfo %s | FileCheck %s --check-prefix=DBG -DFILE=%/t && cat %/t | FileCheck %s --check-prefix=DBGFILE
 
 // CHECK: func @function(
 // CHECK-NEXT: loc("[[FILE]]":{{[0-9]+}}:{{[0-9]+}})
@@ -15,3 +16,18 @@ func.func @function() -> i32 {
   %1 = "foo"() : () -> i32 loc("original")
   return %1 : i32 loc("original")
 } loc("original")
+
+// DBG: func @function2(
+// DBG-NEXT: loc("[[FILE]]":{{[0-9]+}}:{{[0-9]+}})
+// DBG-NEXT: loc("[[FILE]]":{{[0-9]+}}:{{[0-9]+}})
+// DBG-NEXT: } loc("[[FILE]]":{{[0-9]+}}:{{[0-9]+}})
+
+// DBGFILE: func @function2(
+// DBGFILE-NEXT: loc("{{.*}}location-snapshot.mlir":{{[0-9]+}}:{{[0-9]+}})
+// DBGFILE-NEXT: loc("{{.*}}location-snapshot.mlir":{{[0-9]+}}:{{[0-9]+}})
+// DBGFILE-NEXT: } loc("{{.*}}location-snapshot.mlir":{{[0-9]+}}:{{[0-9]+}})
+
+func.func @function2() -> i32 {
+  %1 = "foo"() : () -> i32
+  return %1 : i32
+}