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[bindings/go] Add debug information accessors

Description

[bindings/go] Add debug information accessors

Add debug information accessors, as provided in the following patches:

https://reviews.llvm.org/D46627 (DILocation)
https://reviews.llvm.org/D52693 metadata kind
https://reviews.llvm.org/D60481 get/set debug location on a Value
https://reviews.llvm.org/D60489 (DIScope)

The API as proposed in this patch is similar to the current Value API,
with a single root type and methods that are only valid for certain
subclasses. I have considered just implementing generic Line() calls
(that are valid on all DINodes that have a line) but the implementation
of that got a bit awkward without support from the C API. I've also
considered creating generic getters like a Metadata.DebugLoc() that
returns a DebugLoc, but there is a mismatch between the Go DI nodes in
the LLVM API and the actual DINode class hierarchy, so that's also hard
to get right (without being confusing or breaking the API).

Differential Revision: https://reviews.llvm.org/D63056

Details

Committed
aykevlJun 24 2019, 9:23 AM
Differential Revision
D63056: [bindings/go] Add debug information accessors
Parents
rL364197: [analyzer] print() JSONify: ProgramPoint revision
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