Revert "[wasm] Remove all implications from --predictable"

This reverts commit 79d63a5e.

Reason for revert: Breaks predictable: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux%20-%20predictable/36887/overview

Original change's description:
> [wasm] Remove all implications from --predictable
>
> In predictable mode, we want to execute the same code as otherwise,
> modulo timing. Hence remove any implications which change behaviour
> (like tier-up or asynchronous compilation).
> Note that --predictable is a debugging flag, so the configurations does
> not need to "make sense" in production.
>
> R=​ahaas@chromium.org
>
> Bug: v8:11848
> Change-Id: If74fbacadeb087d977922c41f33fd18738b50ded
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2940898
> Commit-Queue: Clemens Backes <clemensb@chromium.org>
> Reviewed-by: Andreas Haas <ahaas@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#74973}

Bug: v8:11848
Change-Id: I20eaf665e8ce63af8aeffe3bac7a45372ad6ab7b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2944434
Auto-Submit: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#74974}

src/flags/flag-definitions.h

@@ -2056,6 +2056,11 @@ DEFINE_IMPLICATION(predictable, single_threaded_gc)
 DEFINE_NEG_IMPLICATION(predictable, concurrent_recompilation)
 DEFINE_NEG_IMPLICATION(predictable, compiler_dispatcher)
 DEFINE_NEG_IMPLICATION(predictable, stress_concurrent_inlining)
+#if V8_ENABLE_WEBASSEMBLY
+DEFINE_VALUE_IMPLICATION(predictable, wasm_num_compilation_tasks, 0)
+DEFINE_NEG_IMPLICATION(predictable, wasm_async_compilation)
+DEFINE_NEG_IMPLICATION(predictable, wasm_tier_up)
+#endif  // V8_ENABLE_WEBASSEMBLY
 
 DEFINE_BOOL(predictable_gc_schedule, false,
             "Predictable garbage collection schedule. Fixes heap growing, "

tools/testrunner/local/variants.py

@@ -81,8 +81,9 @@ INCOMPATIBLE_FLAGS_PER_VARIANT = {
 INCOMPATIBLE_FLAGS_PER_BUILD_VARIABLE = {
   "lite_mode": ["--no-lazy-feedback-allocation", "--max-semi-space-size=*"]
                + INCOMPATIBLE_FLAGS_PER_VARIANT["jitless"],
-  "predictable": ["--parallel-compile-tasks",
+  "predictable": ["--liftoff", "--parallel-compile-tasks",
                   "--concurrent-recompilation",
+                  "--wasm-num-compilation-tasks=*",
                   "--stress-concurrent-allocation"],
 }