DebugInfo: Refactor CompileUnit into a Unit baseclass and CompileUnit/TypeUnit derived classes.

Header/cpp file rename to follow immediately - just splitting out the
commits for ease of review/reading to demonstrate that the renaming
changes are entirely mechanical.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196139 91177308-0d34-0410-b5e6-96231b3b80d8
DebugInfo: Rename DwarfCompileUnit.* to DwarfUnit.* to match their contents.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196140 91177308-0d34-0410-b5e6-96231b3b80d8
Debug Info: Move the constant for Debug Info Version from Dwarf.h to Metadata.h.

Suggested by Eric.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196144 91177308-0d34-0410-b5e6-96231b3b80d8
InlineFunction.cpp: Remove a return value that is always false

Remove some associated dead code.

This cleanup is associated with PR17872.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196147 91177308-0d34-0410-b5e6-96231b3b80d8
[AArch64] Implemented vcopy_lane patterns using scalar DUP instruction.
Patch by Ana Pazos!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196151 91177308-0d34-0410-b5e6-96231b3b80d8
Update Ocaml/vmcore.ml to emit a "Debug Info Version" module flag.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196156 91177308-0d34-0410-b5e6-96231b3b80d8
Debug Info: drop debug info via upgrading path if version number does not match.

Add a helper function getDebugInfoVersionFromModule to return the debug info
version number for a module.

"Verifier/module-flags-1.ll" checks for verification errors.
It will seg fault when calling getDebugInfoVersionFromModule because of the
incorrect format for module flags in the testing case. We make
getModuleFlagsMetadata more robust by checking for error conditions.

PR17982


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196158 91177308-0d34-0410-b5e6-96231b3b80d8
DebugInfo: Rename generic unit references to "TheU" instead of TheCU now that they might be type units instead of compile units.

CR feedback from Eric Christopher on r196139.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196159 91177308-0d34-0410-b5e6-96231b3b80d8
Remove unnecessary/commented-out header inclusion.

Review feedback from Eric Christopher on r196140

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196160 91177308-0d34-0410-b5e6-96231b3b80d8
Rename variables to be consistent (CST -> Cst). No functional change intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196161 91177308-0d34-0410-b5e6-96231b3b80d8
Move variables to where they are used and give them better names. No functional change intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196163 91177308-0d34-0410-b5e6-96231b3b80d8
Use local variable for repeated use rather than 'get' method. No functional change intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196164 91177308-0d34-0410-b5e6-96231b3b80d8
Convert two char* that are only ever used as booleans to bool.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196168 91177308-0d34-0410-b5e6-96231b3b80d8
Don't set PrivateGlobalPrefix twice in the same function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196169 91177308-0d34-0410-b5e6-96231b3b80d8
Refactor the setting of PrivateGlobalPrefix.

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196170 91177308-0d34-0410-b5e6-96231b3b80d8
Remove PPCScoreboardHazardRecognizer

PPCScoreboardHazardRecognizer was a subclass of ScoreboardHazardRecognizer
which did only one thing: filtered out nodes in EmitInstruction for which
DAG->getInstrDesc(SU) returned NULL. This used to be the case for PPC pseudo
instructions. As far as I can tell, this is no longer true, and so we can use
ScoreboardHazardRecognizer directly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196171 91177308-0d34-0410-b5e6-96231b3b80d8
Debug Info: rename getDebugInfoVersionFromModule to getDebugMetadataVersionFromModule.

Suggested by Eric.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196172 91177308-0d34-0410-b5e6-96231b3b80d8
llvm-cov: Split up reading of GCNO and GCDA files.

There are now two functions: readGCNO() and readGCDA().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196173 91177308-0d34-0410-b5e6-96231b3b80d8
llvm-cov: Added edge struct for traversal in block.

Added GCOVEdge which are simple structs owned by the GCOVFunction that
stores the source and destination GCOVBlocks, as well as the counts.
Changed GCOVBlocks so that it stores a vector of source GCOVEdges and a
vector of destination GCOVEdges, rather than just the block number.

Storing the block number was only useful for knowing the number of edges
and for debug info. Using a struct is useful for traversing the edges,
especially back edges which may be needed later.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196175 91177308-0d34-0410-b5e6-96231b3b80d8
llvm-cov: Store blocks rather than counts per line.

Each line stores all the blocks that execute on that line, instead of
only storing the line counts previously accumulated. This provides more
information for each line, and will be useful for options in enabling
block and branch information.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196177 91177308-0d34-0410-b5e6-96231b3b80d8