[PATCH] D45078: [DebugInfo] Enable the capability of attaching metadata to BasicBlock.

[Hsiangkai Wang via Phabricator via llvm-commits]

HsiangKai created this revision.
HsiangKai added reviewers: rnk, chenwj, aprantl.
Herald added a subscriber: JDevlieghere.

In order to attach debug info to labels. We need to enable the capability of attaching metadata to BasicBlock. If we have following LLVM IR fragment,

top:

  %0 = load i32, i32* %a.addr, align 4

we could attach debug metadata to label 'top' as follow

top: !10

  %0 = load i32, i32* %a.addr, align 4

!10 = DILabel(name: top, ...)


Repository:
  rL LLVM

https://reviews.llvm.org/D45078

Files:
  include/llvm/IR/BasicBlock.h
  lib/IR/AsmWriter.cpp
  lib/IR/LLVMContextImpl.h
  lib/IR/Metadata.cpp

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