[sparkplug] Add always_sparkplug variant

Add an always_sparkplug testing variant, and fix a couple of issues it
found.

Bug: v8:11420
Change-Id: I7d87a41e3413f40271a0140118531f075d633b23
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2773047
Reviewed-by: Patrick Thier <pthier@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73529}

src/codegen/compiler.cc

@@ -1410,6 +1410,7 @@ bool CompileAllWithBaseline(Isolate* isolate,
     Handle<SharedFunctionInfo> shared_info = finalize_data.function_handle();
     IsCompiledScope is_compiled_scope(*shared_info, isolate);
     if (!is_compiled_scope.is_compiled()) continue;
+    if (!CanCompileWithBaseline(isolate, shared_info)) continue;
     if (!CompileSharedWithBaseline(isolate, shared_info, flag,
                                    &is_compiled_scope)) {
       return false;

test/mjsunit/baseline/cross-realm.js

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax --sparkplug
+// Flags: --allow-natives-syntax --sparkplug --no-always-sparkplug
 
 // Tier-up across Realms
 

test/mjsunit/baseline/test-baseline-module.mjs

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax --super-ic --sparkplug
+// Flags: --allow-natives-syntax --super-ic --sparkplug --no-always-sparkplug
 
 export let exported = 17;
 import imported from 'test-baseline-module-helper.mjs';

test/mjsunit/baseline/test-baseline.js

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax --super-ic --sparkplug
+// Flags: --allow-natives-syntax --super-ic --sparkplug --no-always-sparkplug
 
 function run(f, ...args) {
   try { f(...args); } catch (e) {}

test/mjsunit/mjsunit.js

@@ -193,6 +193,9 @@ var isInterpreted;
 // Returns true if given function in baseline.
 var isBaseline;
 
+// Returns true if given function in unoptimized (interpreted or baseline).
+var isUnoptimized;
+
 // Returns true if given function is optimized.
 var isOptimized;
 
@@ -681,8 +684,7 @@ var prettyPrinted;
       return;
     }
     var is_optimized = (opt_status & V8OptimizationStatus.kOptimized) !== 0;
-    var is_baseline = (opt_status & V8OptimizationStatus.kBaseline) !== 0;
-    assertFalse(is_optimized && !is_baseline, name_opt);
+    assertFalse(is_optimized, name_opt);
   }
 
   assertOptimized = function assertOptimized(
@@ -745,6 +747,10 @@ var prettyPrinted;
            (opt_status & V8OptimizationStatus.kBaseline) !== 0;
   }
 
+  isUnoptimized = function isUnoptimized(fun) {
+    return isInterpreted(fun) || isBaseline(fun);
+  }
+
   isOptimized = function isOptimized(fun) {
     var opt_status = OptimizationStatus(fun, "");
     assertTrue((opt_status & V8OptimizationStatus.kIsFunction) !== 0,

test/mjsunit/shared-function-tier-up-turbo.js

@@ -25,7 +25,7 @@ assertFalse(isNeverOptimize());
 
     if (i == 1) {
       // f must be interpreted code.
-      assertTrue(isInterpreted(f));
+      assertTrue(isUnoptimized(f));
 
       // Run twice (i = 0, 1), then tier-up.
       %OptimizeFunctionOnNextCall(f);

tools/clusterfuzz/js_fuzzer/resources/differential_fuzz_v8.js

@@ -23,5 +23,7 @@ assertOptimized = () => {};
 isNeverOptimize = () => {};
 isAlwaysOptimize = () => {};
 isInterpreted = () => {};
+isBaseline = () => {};
+isUnoptimized = () => {};
 isOptimized = () => {};
 isTurboFanned = () => {};

tools/clusterfuzz/v8_foozzie_harness_adjust.js

@@ -89,6 +89,10 @@ try {
 
     isInterpreted = function isInterpreted() {}
 
+    isBaseline = function isBaseline() {}
+
+    isUnoptimized = function isUnoptimized() {}
+
     isOptimized = function isOptimized() {}
 
     isTurboFanned = function isTurboFanned() {}

tools/testrunner/local/variants.py

@@ -15,6 +15,7 @@ ALL_VARIANT_FLAGS = {
   "experimental_regexp":  [["--default-to-experimental-regexp-engine"]],
   "jitless": [["--jitless"]],
   "sparkplug": [["--sparkplug"]],
+  "always_sparkplug": [[ "--always-sparkplug" ]],
   "minor_mc": [["--minor-mc"]],
   "no_lfa": [["--no-lazy-feedback-allocation"]],
   # No optimization means disable all optimizations. OptimizeFunctionOnNextCall
@@ -61,7 +62,8 @@ INCOMPATIBLE_FLAGS_PER_VARIANT = {
   "stress_js_bg_compile_wasm_code_gc": ["--no-stress-background-compile", "--parallel-compile-tasks"],
   "stress": ["--no-stress-opt", "--always-opt", "--no-always-opt", "--liftoff", "--max-inlined-bytecode-size=*",
              "--max-inlined-bytecode-size-cumulative=*", "--stress-inline"],
-  "sparkplug": ["--jitless"],
+  "sparkplug": ["--jitless", "--no-sparkplug" ],
+  "always_sparkplug": [ "--jitless", "--no-sparkplug", "--no-always-sparkplug" ],
   "turboprop": ["--interrupt-budget=*", "--no-turbo-direct-heap-access", "--no-turboprop"],
   "turboprop_as_toptier": ["--interrupt-budget=*", "--no-turbo-direct-heap-access", "--no-turboprop", "--no-turboprop-as-toptier"],
   "code_serializer": ["--cache=after-execute", "--cache=full-code-cache", "--cache=none"],