This commit ensures DIEs are constructed within a compile unit and
immediately added to their parents.

Reviewed off-list by Eric.

llvm-svn: 193568

More patches will be submitted to convert "new DIE(" to use createAddAndDIE in
DwarfCompileUnit.cpp. This will simplify implementation of addDIEEntry where
we have to decide between ref4 and ref_addr, because DIEs that can be shared
across CU will be added to a CU already.

Reviewed off-list by Eric.

llvm-svn: 193567

It wraps around "new DIE(" and handles the bookkeeping part of the newly-created
DIE. It adds the DIE to its parent, and calls insertDIE if necessary. It makes
sure that bookkeeping is done at the earliest time and we should not see
parentless DIEs if all constructions of DIEs go through this helper function.

Later on, we can use an allocator for DIE allocation, and will only need to
change createAndAddDIE instead of modifying all the "new DIE(".

Reviewed off-list by Eric.

llvm-svn: 193566

llvm-svn: 193432

llvm-svn: 193427

MCStreamer: Reimplement the virtual EmitRawText as a protected member, EmitRawTextImpl, to avoid string literal ambiguities

Also improve the implementation of EmitRawText(Twine) so it doesn't
bother using the SmallString buffer if the Twine is a simple StringRef
anyway.

llvm-svn: 193378

The default case at the end of the switch handles this just fine.

llvm-svn: 193374

llvm-svn: 193373

llvm-svn: 193372

llvm-svn: 193371

llvm-svn: 193363

llvm-svn: 193361

llvm-svn: 193360

This may've been used at some point but the 'print' member function grew
an Indent parameter that entirely shadows this parameter.

llvm-svn: 193358

Since we never insert DIE for DITemplateTypeParameter to a map, there is no need
to call getDIE in getOrCreateTemplateTypeParameterDIE. It is also renamed to
constructTemplateTypeParameterDIE to match with other construct functions
in CompileUnit.

Same applies to getOrCreateTemplateValueParameterDIE.

llvm-svn: 193287

Rename createMemberDIE to constructMemberDIE to match other construct functions
in CompileUnit.

llvm-svn: 193286

Remove the unneeded return values from createMemberDIE, constructEnumTypeDIE,
getOrCreateTemplateTypeParameterDIE, and getOrCreateTemplateValueParameterDIE.

llvm-svn: 193285

Unifying the argument ordering of private construct functions in CompileUnit to
follow constructTypeDIE(DIE &, DIBasicType),
constructTypeDIE(DIE &, DIDerivedType), constructTypeDIE(DIE &, DICompositeType),
constructSubrangeDIE and constructArrayTypeDIE.

llvm-svn: 193284

llvm-svn: 193276

llvm-svn: 193272

Remove unnecessary creation of LexicalScope in collectDeadVariables.
The created LexicialScope was only used to get isAbstractScope, which
should be false from the creation:
"new LexicalScope(NULL, DIDescriptor(SP), NULL, false);".

We can also remove a DenseMap that holds the created LexicalScopes.

llvm-svn: 193196

Since (as of r190716) Clang no longer emits debug info for C++ friend
declarations (and it seems GCC never has/does, which was the motivation
for the Clang change), there's no actual reachable case for implementing
the part of DWARF 4, Section 7.27 part 5 that pertains to friends.

Leave an assert here so that if/when we do have a client producing
friends and using type units, we can fill in the gap and add appropriate
(unit and feature) tests.

llvm-svn: 193193

Includes a test case/FIXME demonstrating a bug/limitation in pointer to
member hashing. To be honest I'm not sure why we don't just always use
summary hashing for referenced types... but perhaps I'm missing
something.

llvm-svn: 193175

llvm-svn: 193135

DWARF Type Hashing: Include reference and rvalue reference type in the declarable summary hashing path

More support for 7.25 Part 5.

llvm-svn: 193129

There are several other tag types that need similar handling but to
ensure test coverage they'll be coming incrementally.

llvm-svn: 193126

llvm-svn: 193111

llvm-svn: 193106

This uses a map, keeping the type DIE numbering separate from the DIEs
themselves - alternatively we could do things the way GCC does if we
want to add an integer to the DIE type to record the numbering there.

llvm-svn: 193105

llvm-svn: 193095

This allows various variables to be more self-documenting and easier to
debug by being of specific types without overlapping enum values.

Precommit review by Eric Christopher.

llvm-svn: 193091

Found while adding type safety to the various DWARF enumerations (form,
attribute, tag, etc) that caused Clang to warn on an incompletely
covered switch. Converting the comment to a default/unreachable
uncovered this case of an unsupported form encoding. Seems we were
skipping fission strings entirely.

llvm-svn: 193089

This ensures that the prefix data is treated as part of the function for
the purpose of debug info.  This provides a better debugging experience,
among other things by allowing a debug info client to correctly look up
a function in debug info given a function pointer.

llvm-svn: 193042

llvm-svn: 193038

llvm-svn: 193024

llvm-svn: 193023

With this commit, all DIEs created in CompileUnit will be added to parents
inside the same function. Also make getOrCreateTemplateType|Value functions
private.

No functionality change.

llvm-svn: 193002

llvm-svn: 193001

error messages should not be able to occur at the same time.

llvm-svn: 192985

requires a more in depth change to the IR structure.

llvm-svn: 192938