[test] Enable slow-path variant on a subset of bots

Prepared by:
https://crrev.com/c/798412

Bug: v8:7120
Change-Id: I28a00f175673209e6d5f662e30a5448236e7a7c9
Reviewed-on: https://chromium-review.googlesource.com/800612
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50287}

infra/testing/client.v8.pyl

@@ -16,6 +16,16 @@
   ],
   'V8 Linux64 - debug': [
     {'name': 'v8testing', 'variant': 'minor_mc', 'shards': 1},
+    {'name': 'v8testing', 'variant': 'slow_path', 'shards': 1},
+  ],
+  'V8 Linux - gc stress': [
+    {'name': 'mjsunit', 'variant': 'slow_path', 'shards': 2},
+  ],
+  'V8 Linux64 ASAN': [
+    {'name': 'v8testing', 'variant': 'slow_path', 'shards': 1},
+  ],
+  'V8 Linux64 TSAN': [
+    {'name': 'v8testing', 'variant': 'slow_path', 'shards': 1},
   ],
   'V8 Linux64 - fyi': [
     {'name': 'v8testing', 'variant': 'infra_staging', 'shards': 1},

infra/testing/tryserver.v8.pyl

@@ -13,5 +13,15 @@
   ],
   'v8_linux64_rel_ng_triggered': [
     {'name': 'v8testing', 'variant': 'minor_mc', 'shards': 1},
+    {'name': 'v8testing', 'variant': 'slow_path', 'shards': 1},
+  ],
+  'v8_linux_gc_stress_dbg': [
+    {'name': 'mjsunit', 'variant': 'slow_path', 'shards': 2},
+  ],
+  'v8_linux64_asan_rel_ng_triggered': [
+    {'name': 'v8testing', 'variant': 'slow_path', 'shards': 1},
+  ],
+  'v8_linux64_tsan_rel': [
+    {'name': 'v8testing', 'variant': 'slow_path', 'shards': 1},
   ],
 }

test/mjsunit/mjsunit.status

@@ -759,4 +759,11 @@
   'wasm/default-liftoff-setting': [SKIP],
 }], # variant == liftoff
 
+##############################################################################
+['variant == slow_path and gc_stress', {
+  # Slow tests.
+  'regress/regress-crbug-493779': [SKIP],
+  'string-replace-gc': [SKIP],
+}],  # variant == slow_path
+
 ]

tools/testrunner/local/variants.py

@@ -8,6 +8,7 @@ ALL_VARIANT_FLAGS = {
   "future": [["--future"]],
   "liftoff": [["--liftoff"]],
   "minor_mc": [["--minor-mc"]],
+  "slow_path": [["--force-slow-path"]],
   "stress": [["--stress-opt", "--always-opt"]],
   # TODO(6792): Write protected code has been temporary added to the below
   # variant until the feature has been enabled (or staged) by default.