Prince781 marked an inline comment as done.
Prince781 added inline comments.


================
Comment at: clang/lib/CodeGen/CodeGenFunction.cpp:479
+        return a_deps.find(b) != a_deps.end() 
+            || b->getLocation() < a->getLocation(); // ensure deterministic 
ordering
+      });
----------------
efriedma wrote:
> Is the call to a_deps.find() here actually necessary?  It shouldn't be 
> possible for an initializer to directly refer to a variable declared later.
> 
> "<" on SourceLocations isn't source order, in general; you need 
> isBeforeInTranslationUnit.  (This should be documented somewhere, but I'm not 
> finding the documentation, unfortunately.  Any suggestions for where it 
> should be documented?)
> It shouldn't be possible for an initializer to directly refer to a variable 
> declared later.

That's true. I was using `deps.find()` to order the initialization of the 
variables. But since you mention `isBeforeInTranslationUnit`, I can use that 
instead. It appears to be documented [[ 
https://clang.llvm.org/doxygen/classclang_1_1SourceManager.html#af0ffe5c3a34c93204accb74f0f4717c5
 | here ]].


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D66122/new/

https://reviews.llvm.org/D66122



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