[infra] Add GC stress builders for Linux 64

Bug: v8:13116
Change-Id: I76b5e7dfa5e99107fc54722b794bd07ada91152c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3810231Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Almothana Athamneh <almuthanna@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82193}

infra/mb/mb_config.pyl

@@ -233,6 +233,7 @@
       'v8_linux64_disable_runtime_call_stats_rel_ng': 'release_x64_disable_runtime_call_stats',
       'v8_linux64_external_code_space_dbg_ng': 'debug_x64_external_code_space',
       'v8_linux64_gc_stress_custom_snapshot_dbg_ng': 'debug_x64_trybot_custom',
+      'v8_linux64_gc_stress_dbg_ng': 'debug_x64_trybot',
       'v8_linux64_gcc_compile_dbg': 'debug_x64_gcc',
       'v8_linux64_gcc_compile_rel': 'release_x64_gcc',
       'v8_linux64_gcc_light_compile_dbg': 'debug_x64_gcc',

infra/testing/builders.pyl

@@ -422,6 +422,16 @@
       },
     ],
   },
+  'v8_linux64_gc_stress_dbg_ng_triggered': {
+    'swarming_dimensions' : {
+      'cpu': 'x86-64-avx2',
+      'os': 'Ubuntu-18.04',
+    },
+    'tests': [
+      {'name': 'mjsunit', 'variant': 'slow_path', 'test_args': ['--gc-stress'], 'shards': 2},
+      {'name': 'd8testing', 'test_args': ['--gc-stress'], 'shards': 5},
+    ],
+  },
   'v8_linux64_gcc_rel_ng_triggered': {
     'swarming_dimensions' : {
       'os': 'Ubuntu-20.04',
@@ -1353,6 +1363,25 @@
       {'name': 'v8testing'},
     ],
   },
+  'V8 Linux64 - gc stress': {
+    'swarming_dimensions': {
+      'cpu': 'x86-64-avx2',
+      'os': 'Ubuntu-18.04',
+    },
+    'tests': [
+      {
+        'name': 'd8testing',
+        'test_args': ['--gc-stress'],
+        'shards': 5,
+      },
+      {
+        'name': 'mjsunit',
+        'variant': 'slow_path',
+        'test_args': ['--gc-stress'],
+        'shards': 2,
+      },
+    ],
+  },
   'V8 Linux64 - gcov coverage': {
     'swarming_dimensions' : {
       'os': 'Ubuntu-18.04',