Fixed debug_aranges handling for common symbols.

The size of common symbols is now tracked correctly, so they can be listed in the arange section without needing knowledge of other following symbols.

.comm (and .lcomm) do not indicate to the system assembler any particular section to use, so we have to treat them as having no section.

Test case update to account for this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191210 91177308-0d34-0410-b5e6-96231b3b80d8
fix typo: than -> then

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191214 91177308-0d34-0410-b5e6-96231b3b80d8
Remove remaining references to -O4.

Thanks to Hal Finkel for noticing it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191216 91177308-0d34-0410-b5e6-96231b3b80d8
Add a paragraph on prefix data layout.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191219 91177308-0d34-0410-b5e6-96231b3b80d8
Handle gnu pubtypes sections:

a) Make sure we are emitting the correct section in our section labels
when we begin the module.
b) Make sure we are emitting the correct pubtypes section in the
presence of gnu pubtypes.
c) For C++ struct, union, class, and enumeration types are default
external.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191225 91177308-0d34-0410-b5e6-96231b3b80d8
Reformat code with clang-format.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191226 91177308-0d34-0410-b5e6-96231b3b80d8
Make nomips16 mask not repeat if it ends with a '.'.
This mask is purely for debugging and testing.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191231 91177308-0d34-0410-b5e6-96231b3b80d8
Exract most of DWARFCompileUnit into a new DWARFUnit to prepare for the coming DWARFTypeUnit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191233 91177308-0d34-0410-b5e6-96231b3b80d8
llvm-dwarfdump/libDebugInfo support for type units

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191234 91177308-0d34-0410-b5e6-96231b3b80d8
Formatting.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191235 91177308-0d34-0410-b5e6-96231b3b80d8
Rename IsStatic variable to Linkage in order to be a bit more descriptive.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191236 91177308-0d34-0410-b5e6-96231b3b80d8
Unbreak the build (from r191233)since we're calling printf.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191238 91177308-0d34-0410-b5e6-96231b3b80d8
Add more external types to the pubtypes table. Expand the asm
checking patch until we get full dumping support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191239 91177308-0d34-0410-b5e6-96231b3b80d8
Explicitly request unsigned enum types when desired

The underlying type of all plain enums in MSVC is 'int', even if the
enumerator contains large 32-bit unsigned values or values greater than
UINT_MAX.  The only way to get a large or unsigned enum type is to
request it explicitly with the C++11 strong enum types feature.

However, since LLVM isn't C++11 yet, I had to add a conditional
LLVM_ENUM_INT_TYPE to Compiler.h to control its usage.

The motivating true positive for this change is compiling PointerIntPair
with MSVC for win64.  The PointerIntMask value is supposed to be pointer
sized value of all ones with some low zeros.  Instead, it's truncated to
32-bits!  We are only saved later because it is sign extended back in
the AND with int64_t, and we happen to want all ones.

This silences lots of -Wmicrosoft warnings during a clang self-host
targeting Windows.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191241 91177308-0d34-0410-b5e6-96231b3b80d8
Comments for r191234 as suggested by Eric Christopher.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191244 91177308-0d34-0410-b5e6-96231b3b80d8
Selecting the address from a very long chain of GEPs can blow the stack.

The recursive nature of the address selection code can cause the stack to
explode if there is a long chain of GEPs. Convert the recursive bit into a
iterative method to avoid this.

<rdar://problem/12445434>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191252 91177308-0d34-0410-b5e6-96231b3b80d8
Make dwarfdump-type-units.test order-independent

The order in which the comdat type unit sections appear in the output is
unspecified and may vary from machine to machine.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191253 91177308-0d34-0410-b5e6-96231b3b80d8
Format the index entry kind string to align.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191255 91177308-0d34-0410-b5e6-96231b3b80d8
Regenerate testcase from source.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191256 91177308-0d34-0410-b5e6-96231b3b80d8
Add namespaces to the list of items that we expose via pubnames.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191257 91177308-0d34-0410-b5e6-96231b3b80d8