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[debug] Mark toLocaleString and TA#join builtins as side-effect free.

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Bug: chromium:940373
Change-Id: If5f90ff5f873f0687c6a6a4063e0d09d6bbbd556
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1533157
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Peter Wong <peter.wm.wong@gmail.com>
Cr-Commit-Position: refs/heads/master@{#60440}
This commit is contained in:
peterwmwong 2019-03-20 22:11:58 -05:00 committed by Commit Bot
parent d9de15e5f1
commit 660d828790
3 changed files with 17 additions and 9 deletions
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9
src/debug/debug-evaluate.cc
View File

@ -504,6 +504,7 @@ DebugInfo::SideEffectState BuiltinGetSideEffectState(Builtins::Name id) {
case Builtins::kObjectPrototypeIsPrototypeOf:
case Builtins::kObjectPrototypePropertyIsEnumerable:
case Builtins::kObjectPrototypeToString:
case Builtins::kObjectPrototypeToLocaleString:
// Array builtins.
case Builtins::kArrayIsArray:
case Builtins::kArrayConstructor:
@ -546,12 +547,14 @@ DebugInfo::SideEffectState BuiltinGetSideEffectState(Builtins::Name id) {
case Builtins::kTypedArrayPrototypeFind:
case Builtins::kTypedArrayPrototypeFindIndex:
case Builtins::kTypedArrayPrototypeIncludes:
case Builtins::kTypedArrayPrototypeJoin:
case Builtins::kTypedArrayPrototypeIndexOf:
case Builtins::kTypedArrayPrototypeLastIndexOf:
case Builtins::kTypedArrayPrototypeSlice:
case Builtins::kTypedArrayPrototypeSubArray:
case Builtins::kTypedArrayPrototypeEvery:
case Builtins::kTypedArrayPrototypeSome:
case Builtins::kTypedArrayPrototypeToLocaleString:
case Builtins::kTypedArrayPrototypeFilter:
case Builtins::kTypedArrayPrototypeMap:
case Builtins::kTypedArrayPrototypeReduce:
@ -609,6 +612,9 @@ DebugInfo::SideEffectState BuiltinGetSideEffectState(Builtins::Name id) {
case Builtins::kDatePrototypeToISOString:
case Builtins::kDatePrototypeToUTCString:
case Builtins::kDatePrototypeToString:
case Builtins::kDatePrototypeToLocaleString:
case Builtins::kDatePrototypeToLocaleDateString:
case Builtins::kDatePrototypeToLocaleTimeString:
case Builtins::kDatePrototypeToTimeString:
case Builtins::kDatePrototypeToJson:
case Builtins::kDatePrototypeToPrimitive:
@ -674,6 +680,7 @@ DebugInfo::SideEffectState BuiltinGetSideEffectState(Builtins::Name id) {
case Builtins::kNumberPrototypeToFixed:
case Builtins::kNumberPrototypeToPrecision:
case Builtins::kNumberPrototypeToString:
case Builtins::kNumberPrototypeToLocaleString:
case Builtins::kNumberPrototypeValueOf:
// BigInt builtins.
case Builtins::kBigIntConstructor:
@ -977,6 +984,8 @@ static bool TransitivelyCalledBuiltinHasNoSideEffect(Builtins::Name caller,
switch (caller) {
case Builtins::kArrayPrototypeJoin:
case Builtins::kArrayPrototypeToLocaleString:
case Builtins::kTypedArrayPrototypeJoin:
case Builtins::kTypedArrayPrototypeToLocaleString:
return true;
default:
return false;

7
test/debugger/debug/side-effect/debug-evaluate-no-side-effect-builtins-2.js
View File

@ -45,11 +45,10 @@ function listener(event, exec_state, event_data, data) {
if (typeof Date.prototype[f] === "function") {
if (f.startsWith("set")) {
fail(`date.${f}(5);`, true);
} else if (f.startsWith("toLocale")) {
if (typeof Intl === "undefined") continue;
fail(`date.${f}();`, true);
} else if (f.startsWith("toLocale") && typeof Intl === "undefined") {
continue;
} else {
success(undefined, `date.${f}();`, true);
success(undefined, `date.${f}();`);
}
}
}

10
test/debugger/debug/side-effect/debug-evaluate-no-side-effect-builtins.js
View File

@ -59,6 +59,7 @@ function listener(event, exec_state, event_data, data) {
success(true, `Object.prototype.isPrototypeOf({})`);
success(true, `({a:1}).propertyIsEnumerable("a")`);
success("[object Object]", `({a:1}).toString()`);
success("[object Object]", `({a:1}).toLocaleString()`);
success("string", `(object_with_callbacks).toString()`);
success(3, `(object_with_callbacks).valueOf()`);
@ -73,8 +74,8 @@ function listener(event, exec_state, event_data, data) {
"flatMap", "forEach", "every", "some", "reduce", "reduceRight", "find",
"filter", "map", "findIndex"
];
var fails = ["toLocaleString", "pop", "push", "reverse", "shift", "unshift",
"splice", "sort", "copyWithin", "fill"];
var fails = ["pop", "push", "reverse", "shift", "unshift", "splice",
"sort", "copyWithin", "fill"];
for (f of Object.getOwnPropertyNames(Array.prototype)) {
if (typeof Array.prototype[f] === "function") {
if (fails.includes(f)) {
@ -123,8 +124,7 @@ function listener(event, exec_state, event_data, data) {
"forEach", "every", "some", "reduce", "reduceRight", "find", "filter",
"map", "findIndex"
];
fails = ["toString", "join", "toLocaleString", "reverse", "sort",
"copyWithin", "fill", "set"];
fails = ["reverse", "sort", "copyWithin", "fill", "set"];
var typed_proto_proto = Object.getPrototypeOf(Object.getPrototypeOf(new Uint8Array()));
for (f of Object.getOwnPropertyNames(typed_proto_proto)) {
if (typeof typed_array[f] === "function" && f !== "constructor") {
@ -160,7 +160,7 @@ function listener(event, exec_state, event_data, data) {
}
for (f of Object.getOwnPropertyNames(Number.prototype)) {
if (typeof Number.prototype[f] === "function") {
if (f == "toLocaleString") continue;
if (f == "toLocaleString" && typeof Intl === "undefined") continue;
success(Number(0.5)[f](5), `Number(0.5).${f}(5);`);
}
}