Add tests that generate and use a secondary cache with LTO

Author: allsey87

bazel/test_secondary_lto_cache/.bazelrc

@@ -0,0 +1 @@
+build --incompatible_enable_cc_toolchain_resolution

bazel/test_secondary_lto_cache/.gitignore

@@ -0,0 +1,4 @@
+bazel-bin
+bazel-out
+bazel-test_external
+bazel-testlogs

bazel/test_secondary_lto_cache/BUILD

@@ -0,0 +1,18 @@
+load("@emsdk//emscripten_toolchain:wasm_rules.bzl", "wasm_cc_binary")
+
+cc_binary(
+    name = "hello-world",
+    srcs = ["hello-world.cc"],
+    linkopts = ["-flto"],
+)
+
+wasm_cc_binary(
+    name = "hello-world-wasm",
+    cc_target = ":hello-world",
+    outputs = [
+        "hello-world.js",
+        "hello-world.wasm",
+    ],
+)
+
+

bazel/test_secondary_lto_cache/MODULE.bazel

@@ -0,0 +1 @@
+bazel_dep(name = "platforms", version = "0.0.9")

bazel/test_secondary_lto_cache/WORKSPACE

@@ -0,0 +1,20 @@
+local_repository(
+    name = "emsdk",
+    path = "..",
+)
+
+load("@emsdk//:deps.bzl", "deps")
+
+deps()
+
+load("@emsdk//:emscripten_deps.bzl", "emscripten_deps")
+
+emscripten_deps()
+
+load("@emsdk//:emscripten_cache.bzl", "emscripten_cache")
+
+emscripten_cache(flags = "--lto")
+
+load("@emsdk//:toolchains.bzl", "register_emscripten_toolchains")
+
+register_emscripten_toolchains()

bazel/test_secondary_lto_cache/hello-world.cc

@@ -0,0 +1,6 @@
+#include <iostream>
+
+int main(int argc, char** argv) {
+  std::cout << "hello world!" << std::endl;
+  return 0;
+}

test/test_bazel.ps1

@@ -22,3 +22,9 @@ if (-not $?) { Exit $LastExitCode }
 # Test use of the closure compiler
 bazel build //:hello-embind-wasm --compilation_mode opt # release
 if (-not $?) { Exit $LastExitCode }
+
+Set-Location ..\test_secondary_lto_cache
+
+bazel build //:hello-world-wasm
+if (-not $?) { Exit $LastExitCode }
+

test/test_bazel.sh

@@ -33,3 +33,7 @@ bazel build //:hello-embind-wasm --compilation_mode dbg # debug
 bazel build //:hello-embind-wasm --compilation_mode opt # release
 # This function should not be minified if the externs file is loaded correctly.
 grep "customJSFunctionToTestClosure" bazel-bin/hello-embind-wasm/hello-embind.js
+
+cd ../test_secondary_lto_cache
+bazel build //:hello-world-wasm
+

test/test_bazel_mac.sh

@@ -27,3 +27,7 @@ bazel build //hello-world:hello-world-wasm-simd
 cd test_external
 bazel build //long_command_line:long_command_line_wasm
 bazel build //:hello-world-wasm
+
+cd ../test_secondary_lto_cache
+bazel build //:hello-world-wasm
+