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Diffstat (limited to 'Source/WebCore/cssjit/SelectorCompiler.cpp')
| -rw-r--r-- | Source/WebCore/cssjit/SelectorCompiler.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Source/WebCore/cssjit/SelectorCompiler.cpp b/Source/WebCore/cssjit/SelectorCompiler.cpp index 7139f52d7..7597a9c90 100644 --- a/Source/WebCore/cssjit/SelectorCompiler.cpp +++ b/Source/WebCore/cssjit/SelectorCompiler.cpp @@ -3164,10 +3164,22 @@ void SelectorCodeGenerator::generateElementIsHovered(Assembler::JumpList& failur generateAddStyleRelationIfResolvingStyle(elementAddressRegister, SelectorChecker::StyleRelation::AffectedByHover); + Assembler::JumpList successCases; + if (m_selectorContext != SelectorContext::QuerySelector && fragment.relationToRightFragment != FragmentRelation::Rightmost) { + // :hover always matches when not in rightmost position when collecting rules for descendant style invalidation optimization. + // Resolving style for a matching descendant will set parent childrenAffectedByHover bit even when the element is not currently hovered. + // This bit has to be set for the event based :hover invalidation to work. + // FIXME: We should just collect style relation bits and apply them as needed when computing style invalidation optimization. + LocalRegister checkingContext(m_registerAllocator); + successCases.append(branchOnResolvingMode(Assembler::Equal, SelectorChecker::Mode::CollectingRulesIgnoringVirtualPseudoElements, checkingContext)); + } + FunctionCall functionCall(m_assembler, m_registerAllocator, m_stackAllocator, m_functionCalls); functionCall.setFunctionAddress(elementIsHovered); functionCall.setOneArgument(elementAddressRegister); failureCases.append(functionCall.callAndBranchOnBooleanReturnValue(Assembler::Zero)); + + successCases.link(&m_assembler); } void SelectorCodeGenerator::generateElementIsInLanguage(Assembler::JumpList& failureCases, const SelectorFragment& fragment) |