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deps: V8: cherry-pick deac757 #29626

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2 changes: 1 addition & 1 deletion common.gypi
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Expand Up @@ -39,7 +39,7 @@

# Reset this number to 0 on major V8 upgrades.
# Increment by one for each non-official patch applied to deps/v8.
'v8_embedder_string': '-node.12',
'v8_embedder_string': '-node.13',

##### V8 defaults for Node.js #####

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8 changes: 8 additions & 0 deletions deps/v8/src/ast/source-range-ast-visitor.cc
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Expand Up @@ -25,6 +25,14 @@ void SourceRangeAstVisitor::VisitBlock(Block* stmt) {
}
}

void SourceRangeAstVisitor::VisitSwitchStatement(SwitchStatement* stmt) {
AstTraversalVisitor::VisitSwitchStatement(stmt);
ZonePtrList<CaseClause>* clauses = stmt->cases();
for (CaseClause* clause : *clauses) {
MaybeRemoveLastContinuationRange(clause->statements());
}
}

void SourceRangeAstVisitor::VisitFunctionLiteral(FunctionLiteral* expr) {
AstTraversalVisitor::VisitFunctionLiteral(expr);
ZonePtrList<Statement>* stmts = expr->body();
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1 change: 1 addition & 0 deletions deps/v8/src/ast/source-range-ast-visitor.h
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Expand Up @@ -34,6 +34,7 @@ class SourceRangeAstVisitor final
friend class AstTraversalVisitor<SourceRangeAstVisitor>;

void VisitBlock(Block* stmt);
void VisitSwitchStatement(SwitchStatement* stmt);
void VisitFunctionLiteral(FunctionLiteral* expr);
bool VisitNode(AstNode* node);

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53 changes: 49 additions & 4 deletions deps/v8/test/mjsunit/code-coverage-block.js
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Expand Up @@ -434,8 +434,8 @@ TestCoverage(
`,
[{"start":0,"end":399,"count":1},
{"start":1,"end":351,"count":1},
{"start":154,"end":204,"count":0},
{"start":226,"end":350,"count":0}]
{"start":154,"end":176,"count":0},
{"start":254,"end":276,"count":0}]
);

TestCoverage(
Expand Down Expand Up @@ -464,8 +464,8 @@ TestCoverage(
`,
[{"start":0,"end":999,"count":1},
{"start":1,"end":951,"count":1},
{"start":152,"end":202,"count":0},
{"start":285,"end":353,"count":0}]
{"start":152,"end":168,"count":0},
{"start":287,"end":310,"count":0}]
);

TestCoverage(
Expand Down Expand Up @@ -1052,4 +1052,49 @@ try { // 0500
{"start":69,"end":153,"count":1}]
);

TestCoverage(
"https://crbug.com/v8/9705",
`
function f(x) { // 0000
switch (x) { // 0050
case 40: nop(); // 0100
case 41: nop(); return 1; // 0150
case 42: nop(); break; // 0200
} // 0250
return 3; // 0300
}; // 0350
f(40); // 0400
f(41); // 0450
f(42); // 0500
f(43); // 0550
`,
[{"start":0,"end":599,"count":1},
{"start":0,"end":351,"count":4},
{"start":104,"end":119,"count":1},
{"start":154,"end":179,"count":2},
{"start":204,"end":226,"count":1},
{"start":253,"end":350,"count":2}]
);

TestCoverage(
"https://crbug.com/v8/9705",
`
function f(x) { // 0000
switch (x) { // 0050
case 40: nop(); // 0100
case 41: nop(); return 1; // 0150
case 42: nop(); break; // 0200
} // 0250
return 3; // 0300
}; // 0350
f(42); // 0400
f(43); // 0450
`,
[{"start":0,"end":499,"count":1},
{"start":0,"end":351,"count":2},
{"start":104,"end":119,"count":0},
{"start":154,"end":179,"count":0},
{"start":204,"end":226,"count":1}]
);

%DebugToggleBlockCoverage(false);
29 changes: 22 additions & 7 deletions deps/v8/test/mjsunit/code-coverage-utils.js
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Expand Up @@ -18,25 +18,40 @@ let gen;
return undefined;
};

function TestCoverageInternal(name, source, expectation, collect_garbage) {
function TestCoverageInternal(
name, source, expectation, collect_garbage, prettyPrintResults) {
source = source.trim();
eval(source);
if (collect_garbage) %CollectGarbage("collect dead objects");
var covfefe = GetCoverage(source);
var stringified_result = JSON.stringify(covfefe);
var stringified_expectation = JSON.stringify(expectation);
if (stringified_result != stringified_expectation) {
print(stringified_result.replace(/[}],[{]/g, "},\n {"));
const mismatch = stringified_result != stringified_expectation;
if (mismatch) {
console.log(stringified_result.replace(/[}],[{]/g, "},\n {"));
}
if (prettyPrintResults) {
console.log("=== Coverage Expectation ===")
for (const {start,end,count} of expectation) {
console.log(`Range [${start}, ${end}) (count: ${count})`);
console.log(source.substring(start, end));
}
console.log("=== Coverage Results ===")
for (const {start,end,count} of covfefe) {
console.log(`Range [${start}, ${end}) (count: ${count})`);
console.log(source.substring(start, end));
}
console.log("========================")
}
assertEquals(stringified_expectation, stringified_result, name + " failed");
};

TestCoverage = function(name, source, expectation) {
TestCoverageInternal(name, source, expectation, true);
TestCoverage = function(name, source, expectation, prettyPrintResults) {
TestCoverageInternal(name, source, expectation, true, prettyPrintResults);
};

TestCoverageNoGC = function(name, source, expectation) {
TestCoverageInternal(name, source, expectation, false);
TestCoverageNoGC = function(name, source, expectation, prettyPrintResults) {
TestCoverageInternal(name, source, expectation, false, prettyPrintResults);
};

nop = function() {};
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