only run compiler gates if there's a non-doc change in a compiler-defining suite (GR-40652)

Author: dougxc

Diff for: common-utils.libsonnet

@@ -73,5 +73,18 @@
 
   # generate a string of hyphen-separated items from the given list, skipping null values
   hyphenize(a_list)::
-    std.join("-", std.filterMap(function(el) el != null, function(el) std.toString(el), a_list))
+    std.join("-", std.filterMap(function(el) el != null, function(el) std.toString(el), a_list)),
+
+  # Adds a CI build predicate to `build` if it is a gate such that it is only
+  # run if a non-documentation file in any of `suites` has been updated.
+  add_gate_predicate(build, suites, extra_includes=[], extra_excludes=[])::
+    if std.member(build.targets, "gate") then
+    build + {
+      guard+: {
+        includes+: [ suite + "/**"      for suite in suites ] + extra_includes,
+        excludes+: [ suite + "/docs/**" for suite in suites ] + [ "**.md" ] + extra_excludes
+      }
+    }
+  else
+    build,
 }

Diff for: compiler/ci.jsonnet

@@ -1,11 +1,14 @@
 {
+  local utils = (import '../common-utils.libsonnet'),
   local graal = (import 'ci_includes/gate.jsonnet'),
   local graal_common = (import 'ci_common/gate.jsonnet'),
   local graal_benchmarks = (import 'ci_common/benchmark-builders.jsonnet'),
   local baseline_benchmarks = (import 'ci_includes/baseline-benchmarks.jsonnet'),
-  builds:
+
+  builds: [utils.add_gate_predicate(b, ["sdk", "truffle", "compiler"]) for b in
     graal.builds +
     graal_common.builds +
     graal_benchmarks.builds +
     baseline_benchmarks.builds
+  ]
 }

Diff for: repo-configuration.libsonnet

@@ -23,6 +23,21 @@
     suite_dir:: "vm",
     mx_env:: {
       libgraal:: "libgraal"
+    },
+
+    libgraal_predicate_conf:: {
+      suites:: [
+        "sdk",
+        "truffle",
+        "compiler",
+        "substratevm",
+        "vm"
+      ],
+
+      # Updating language imports should not run libgraal gates
+      extra_excludes:: [
+        "vm/mx.vm/suite.py"
+      ]
     }
   },
 

Diff for: vm/ci_common/libgraal.jsonnet

@@ -6,6 +6,7 @@ local common_json = composable(import '../../common.json');
 local devkits = common_json.devkits;
 local c = import 'common.jsonnet';
 local g = vm.compiler_gate;
+local utils = import '../../common-utils.libsonnet';
 
 {
   local underscore(s) = std.strReplace(s, "-", "_"),
@@ -107,5 +108,6 @@ local g = vm.compiler_gate;
   builds: if
       g.check_manifest(gates, all_builds, std.thisFile, "gates").result
     then
-      all_builds
+      local conf = repo_config.vm.libgraal_predicate_conf;
+      [utils.add_gate_predicate(b, suites=conf.suites, extra_excludes=conf.extra_excludes) for b in all_builds]
 }