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[SR-13719] Regression in breakpoint resolution time without dSYMs (dwarf debug map) #4457

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swift-ci opened this issue Oct 9, 2020 · 1 comment
Open

[SR-13719] Regression in breakpoint resolution time without dSYMs (dwarf debug map) #4457

swift-ci opened this issue Oct 9, 2020 · 1 comment
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bug Something isn't working LLDB for Swift

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@swift-ci
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swift-ci commented Oct 9, 2020

Previous ID SR-13719
Radar rdar://problem/70298065
Original Reporter Davidee (JIRA User)
Type Bug
Additional Detail from JIRA
Votes 0
Component/s LLDB for Swift
Labels Bug
Assignee None
Priority Medium

md5: 48b12dd57c34b35ddd0bc0c16b928698

Issue Description:

See the description at https://forums.swift.org/t/lldb-regression-in-11-6/41060 and this trace

It seems that a change to how Swift lldb parses DWARF information leads lldb to eagerly create SwiftASTContexts when resolving breakpoints --> leading to parsing clang modules, which for large projects is quite expensive.

It is expected that the SwiftASTContexts should only be created once the breakpoint is hit.
@typesanitizer
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@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@shahmishal shahmishal transferred this issue from apple/swift May 7, 2022
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