DwarfAccelTable: Remove trivial dtor and simplify construction with an array.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207044 91177308-0d34-0410-b5e6-96231b3b80d8
[LCG] Switch the SCC lookup to be in terms of call graph nodes rather
than functions. So far, this access pattern is *much* more common. It
seems likely that any user of this interface is going to have nodes at
the point that they are querying the SCCs.

No functionality changed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207045 91177308-0d34-0410-b5e6-96231b3b80d8
[LCG] Make the insertion and query paths into the LCG which cannot fail
return references to better model this property.

No functionality changed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207047 91177308-0d34-0410-b5e6-96231b3b80d8
[LCG] Switch the primary node iterator to be a *much* more normal C++
iterator, returning a Node by reference on dereference.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207048 91177308-0d34-0410-b5e6-96231b3b80d8
Remove intermediate accelerator table for names.

(similar changes coming for the other accelerator tables)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207049 91177308-0d34-0410-b5e6-96231b3b80d8
More formatting...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207050 91177308-0d34-0410-b5e6-96231b3b80d8
And actually use the DwarfDebug::AccelNames to emit the names.

Fix for r207049 which would've emitted no accelerated names at all...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207051 91177308-0d34-0410-b5e6-96231b3b80d8
[LCG] Remove two unused typedefs from the iterators.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207052 91177308-0d34-0410-b5e6-96231b3b80d8
[LCG] Normalize the post-order SCC iterator to just iterate over the SCC
values rather than having pointers in weird places.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207053 91177308-0d34-0410-b5e6-96231b3b80d8