it first.

This is a more general fix to pr11300.

llvm-svn: 144324

as well.

llvm-svn: 144319

forward decls and have names into the dwarf accelerator types table.

llvm-svn: 144306

multiple dies per function and support C++ basenames.

llvm-svn: 144304

llvm-svn: 144194

llvm-svn: 144184

llvm-svn: 144172

llvm-svn: 144169

and is different than the normal name.

llvm-svn: 144130

llvm-svn: 144105

llvm-svn: 144099

llvm-svn: 144095

llvm-svn: 144027

llvm-svn: 144024

llvm-svn: 144023

llvm-svn: 143982

llvm-svn: 143974

Fixes a self-host error.

llvm-svn: 143970

llvm-svn: 143925

llvm-svn: 143924

to fix the types section (all types, not just global types), and testcases.

The code to do the final emission is disabled by default.

llvm-svn: 143923

the pubnames and pubtypes tables. LLDB can currently use this format
and a full spec is forthcoming and submission for standardization is planned.

A basic summary:

The dwarf accelerator tables are an indirect hash table optimized
for null lookup rather than access to known data. They are output into
an on-disk format that looks like this:

.-------------.
|  HEADER     |
|-------------|
|  BUCKETS    |
|-------------|
|  HASHES     |
|-------------|
|  OFFSETS    |
|-------------|
|  DATA       |
`-------------'

where the header contains a magic number, version, type of hash function,
the number of buckets, total number of hashes, and room for a special
struct of data and the length of that struct.

The buckets contain an index (e.g. 6) into the hashes array. The hashes
section contains all of the 32-bit hash values in contiguous memory, and
the offsets contain the offset into the data area for the particular
hash.

For a lookup example, we could hash a function name and take it modulo the
number of buckets giving us our bucket. From there we take the bucket value
as an index into the hashes table and look at each successive hash as long
as the hash value is still the same modulo result (bucket value) as earlier.
If we have a match we look at that same entry in the offsets table and
grab the offset in the data for our final match.

llvm-svn: 143921

llvm-svn: 143920

llvm-svn: 143919

llvm-svn: 143918

Add an option to pad an uleb128 to MCObjectWriter and remove the uleb128 encoding from the DWARF asm printer.

As a side effect we now print dwarf ulebs with .ascii directives.

llvm-svn: 143809

llvm-svn: 143799

point back in the file in the included testcase. Fixes PR11300.

llvm-svn: 143726

llvm-svn: 143634

implied by directory index zero.

llvm-svn: 143570

Don't assume APInt::getRawData() would hold target-aware endianness nor host-compliant endianness. rawdata[0] holds most lower i64, even on big endian host.

FIXME: Add a testcase for big endian target.

FIXME: Ditto on CompileUnit::addConstantFPValue() ?
llvm-svn: 143194

tools that read the debug info in the .o files by making the DIE sizes more
consistent.

llvm-svn: 143186

llvm-svn: 143097

change.

llvm-svn: 143074

llvm-svn: 142912

llvm-svn: 142892

llvm-svn: 142436

llvm-svn: 142435

llvm-svn: 142307

  .file filenumber "directory" "filename"

This removes one join+split of the directory+filename in MC internals. Because
bitcode files have independent fields for directory and filenames in debug info,
this patch may change the .o files written by existing .bc files.

llvm-svn: 142300