[PATCH] D25927: [cfi] Implement cfi-icall using inline assembly.

[Evgeniy Stepanov via llvm-commits]

eugenis added inline comments.


================
Comment at: lib/Transforms/IPO/LowerTypeTests.cpp:669
+  SmallString<16> Name;
+  Mangler::getNameWithPrefix(Name, Dest->getName(), M.getDataLayout());
+
----------------
pcc wrote:
> echristo wrote:
> > eugenis wrote:
> > > pcc wrote:
> > > > Although I think it doesn't matter in this case, it would probably be better to use the overload that takes a `GlobalValue`.
> > > That one is not static. It can assign temporary labels for unnamed globals, but to use that we would need to access the instance in TargetLoweringObjectFile, not create our own.
> > > 
> > This is why I was mentioning wanting TLOF for this in general. Effectively you can get two different sets of labels if you try the "calling Mangler myself" path.
> > 
> > I'd rather initialize/split TLOF early on the TM rather than have lots of different mechanisms to get symbol names.
> But you're renaming unnamed globals elsewhere? With that just a temporary instance should be enough.
Actually, the current code does not handle unnamed functions. I'll fix it.

Eric, could you elaborate on the "initialize/split TLOF early on the TM"?


Repository:
  rL LLVM

https://reviews.llvm.org/D25927