https://llvm.org/bugs/show_bug.cgi?id=23199
Bug ID: 23199
Summary: Discriminators are added to the line table more often
than necessary
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: DebugInfo
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected]
Classification: Unclassified
As discussed on the list [1], we add discriminators to line table entries more
often than necessary. There may be some downstream users (e.g., Linux perf)
depending on the weak checks -- they should be fixed, and then we should fix
our code to only add discriminators when the entries can't already be
discriminated.
Currently, we check:
- filename
- line
We should also check:
- column
- discriminator
- directory
I'll add FIXMEs to the code and mention this PR when I transition the current
functionality from DILocation over to MDLocation.
[1]:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20150406/270650.html
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