stdlib: Add the LooppointCsvResource resource

This resource wraps the LooppointCsvLoader class so it may be obtained
as a specialized resource via gem5 resources.

Relevant tests and config scripts have been updated.

Change-Id: Ib8e5ff5500fb1560951c9c0110e3c3aec8ca3c42
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/67857
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

tests/pyunit/stdlib/resources/pyunit_resource_specialization.py

@@ -29,6 +29,7 @@ import unittest
 from pathlib import Path
 
 from gem5.resources.resource import *
+from gem5.resources.looppoint import LooppointCsvLoader
 from gem5.isas import ISA
 
 
@@ -235,3 +236,23 @@ class ResourceSpecializationSuite(unittest.TestCase):
             "directory-example documentation.", resource.get_documentation()
         )
         self.assertIsNone(resource.get_source())
+
+    def test_looppoint_pinpoints_resource(self) -> None:
+        """Tests the creation of LooppointCreatorCSVResource via a Looppoint
+        pinpoints csv file."""
+
+        resource = obtain_resource(
+            resource_name="looppoint-pinpoint-csv-resource",
+            resource_directory=self.get_resource_dir(),
+        )
+
+        self.assertIsInstance(resource, LooppointCsvResource)
+
+        # The LooppointCreatorCSVResource should be a subtype of
+        # LooppointCsvLoader.
+        self.assertIsInstance(resource, LooppointCsvLoader)
+
+        self.assertEquals(
+            "A looppoint pinpoints csv file.", resource.get_documentation()
+        )
+        self.assertIsNone(resource.get_source())

tests/pyunit/stdlib/resources/refs/resource-specialization.json

@@ -108,6 +108,15 @@
             "warmup_interval": 23445,
             "simpoint_list" : [2,3,4,15],
             "weight_list" : [0.1, 0.2, 0.4, 0.3]
+        },
+        {
+            "type": "looppoint-pinpoint-csv",
+            "name": "looppoint-pinpoint-csv-resource",
+            "documentation" : "A looppoint pinpoints csv file.",
+            "is_zipped" :  false,
+            "md5sum" : "199ab22dd463dc70ee2d034bfe045082",
+            "url": "http://dist.gem5.org/dist/develop/pinpoints/x86-matrix-multiply-omp-100-8-global-pinpoints-20230127",
+            "source" : null
         }
     ]
 }