CI: split x86_64-mingw job

Author: marcoieni

src/bootstrap/mk/Makefile.in

@@ -99,11 +99,13 @@ prepare:
 
 ## MSVC native builders
 
+# Set of tests that should represent half of the time of the test suite.
+# Used to split tests across multiple CI runners.
 # this intentionally doesn't use `$(BOOTSTRAP)` so we can test the shebang on Windows
 ci-msvc-py:
-	$(Q)$(CFG_SRC_DIR)/x.py test --stage 2 tidy
+	$(Q)$(CFG_SRC_DIR)/x.py test --stage 2 --skip=compiler --skip=src
 ci-msvc-ps1:
-	$(Q)$(CFG_SRC_DIR)/x.ps1 test --stage 2 --skip tidy
+	$(Q)$(CFG_SRC_DIR)/x.ps1 test --stage 2 --skip=tests --skip=coverage-map --skip=coverage-run --skip=library --skip=tidyselftest
 ci-msvc: ci-msvc-py ci-msvc-ps1
 
 ## MingW native builders

src/bootstrap/src/core/builder/mod.rs

@@ -258,11 +258,11 @@ impl PathSet {
 
     // internal use only
     fn check(p: &TaskPath, needle: &Path, module: Kind) -> bool {
-        if let Some(p_kind) = &p.kind {
-            p.path.ends_with(needle) && *p_kind == module
-        } else {
-            p.path.ends_with(needle)
-        }
+        let check_path = || {
+            // This order is important for retro-compatibility, as `starts_with` was introduced later.
+            p.path.ends_with(needle) || p.path.starts_with(needle)
+        };
+        if let Some(p_kind) = &p.kind { check_path() && *p_kind == module } else { check_path() }
     }
 
     /// Return all `TaskPath`s in `Self` that contain any of the `needles`, removing the

src/ci/github-actions/jobs.yml

@@ -372,17 +372,18 @@ auto:
   #  Windows Builders  #
   ######################
 
-  - image: x86_64-msvc
+  # x86_64-msvc is split into two jobs to run tests in parallel.
+  - image: x86_64-msvc-1
     env:
       RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-profiler
-      SCRIPT: make ci-msvc
-    <<: *job-windows-8c
+      SCRIPT: make ci-msvc-py
+    <<: *job-windows
 
-  - image: i686-msvc
+  - image: x86_64-msvc-2
     env:
-      RUST_CONFIGURE_ARGS: --build=i686-pc-windows-msvc
-      SCRIPT: make ci-msvc
-    <<: *job-windows-8c
+      RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-profiler
+      SCRIPT: make ci-msvc-ps1
+    <<: *job-windows
 
   # x86_64-msvc-ext is split into multiple jobs to run tests in parallel.
   - image: x86_64-msvc-ext1