IR: Drop scope from MDTemplateParameter

Follow-up to r229740, which removed `DITemplate*::getContext()` after my
upgrade script revealed that scopes are always `nullptr` for template
parameters. Th

IR: Drop scope from MDTemplateParameter

Follow-up to r229740, which removed `DITemplate*::getContext()` after my
upgrade script revealed that scopes are always `nullptr` for template
parameters. This is the other shoe: drop `scope:` from
`MDTemplateParameter` and its two subclasses. (Note: a bitcode upgrade
would be pointless, since the hierarchy hasn't been moved into place.)

llvm-svn: 229791

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Prefer SmallVector::append/insert over push_back loops.

Same functionality, but hoists the vector growth out of the loop.

llvm-svn: 229500

AsmWriter/Bitcode: MDImportedEntity

llvm-svn: 229025

AsmWriter/Bitcode: MDObjCProperty

llvm-svn: 229024

AsmWriter/Bitcode: MDExpression

llvm-svn: 229023

AsmWriter/Bitcode: MDLocalVariable

llvm-svn: 229022

AsmWriter/Bitcode: MDGlobalVariable

llvm-svn: 229020

AsmWriter/Bitcode: MDTemplate{Type,Value}Parameter

llvm-svn: 229019

AsmWriter/Bitcode: MDNamespace

llvm-svn: 229018

AsmWriter/Bitcode: MDLexicalBlockFile

llvm-svn: 229017

AsmWriter/Bitcode: MDLexicalBlock

llvm-svn: 229016

AsmWriter/Bitcode: MDSubprogram

llvm-svn: 229014

AsmWriter/Bitcode: MDCompileUnit

llvm-svn: 229013

AsmWriter/Bitcode: MDSubroutineType

llvm-svn: 229011

AsmWriter/Bitcode: MDDerivedType and MDCompositeType

llvm-svn: 229009

AsmWriter/Bitcode: MDFile

llvm-svn: 229007

AsmWriter/Bitcode: MDBasicType

llvm-svn: 229005

AsmWriter/Bitcode: MDEnumerator

llvm-svn: 229004

AsmWriter/Bitcode: MDSubrange

llvm-svn: 229003

IR: Add specialized debug info metadata nodes

Add specialized debug info metadata nodes that match the `DIDescriptor`
wrappers (used by `DIBuilder`) closely. Assembly and bitcode support to
follow

IR: Add specialized debug info metadata nodes

Add specialized debug info metadata nodes that match the `DIDescriptor`
wrappers (used by `DIBuilder`) closely. Assembly and bitcode support to
follow soon (it'll mostly just be obvious), but this sketches in today's
schema. This is the first big commit (well, the only *big* one aside
from the testcase changes that'll come when I move this into place) for
PR22464.

I've marked a bunch of obvious changes as `TODO`s in the source; I plan
to make those changes promptly after this hierarchy is moved underneath
`DIDescriptor`, but for now I'm aiming mostly to match the status quo.

llvm-svn: 228640

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IR: Initialize MDNode abbreviations en masse, NFC

llvm-svn: 228203

Misc documentation/comment fixes.

llvm-svn: 228093

IR: Assembly and bitcode for GenericDebugNode

llvm-svn: 228041

IR: Split out DebugInfoMetadata.h, NFC

Move debug-info-centred `Metadata` subclasses into their own
header/source file. A couple of private template functions are needed
from both `Metadata.cpp` an

IR: Split out DebugInfoMetadata.h, NFC

Move debug-info-centred `Metadata` subclasses into their own
header/source file. A couple of private template functions are needed
from both `Metadata.cpp` and `DebugInfoMetadata.cpp`, so I've moved them
to `lib/IR/MetadataImpl.h`.

llvm-svn: 227835

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IR: DwarfNode => DebugNode, NFC

These things are potentially used for non-DWARF data (see the discussion
in PR22235), so take the `Dwarf` out of the name. Since the new name
gives fewer clues, upda

IR: DwarfNode => DebugNode, NFC

These things are potentially used for non-DWARF data (see the discussion
in PR22235), so take the `Dwarf` out of the name. Since the new name
gives fewer clues, update the doxygen to properly describe what they
are.

llvm-svn: 226874

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