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Commit Graph

9 Commits

Author SHA1 Message Date
Jonas Devlieghere
2c693415b7 [llvm] Migrate llvm::make_unique to std::make_unique
Now that we've moved to C++14, we no longer need the llvm::make_unique
implementation from STLExtras.h. This patch is a mechanical replacement
of (hopefully) all the llvm::make_unique instances across the monorepo.

llvm-svn: 369013
2019-08-15 15:54:37 +00:00
Chandler Carruth
ae65e281f3 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00
Zachary Turner
0875a2f99e [llvm-pdbutil] Add the ability to explain binary files.
Using this, you can use llvm-pdbutil to export the contents of a
stream to a binary file, then run explain on the binary file so
that it treats the offset as an offset into the stream instead
of an offset into a file.  This makes it easy to compare the
contents of the same stream from two different files.

llvm-svn: 329207
2018-04-04 17:29:09 +00:00
Zachary Turner
040818cf1c Fix some signed / unsigned conversion problems.
llvm-svn: 328881
2018-03-30 17:28:35 +00:00
Zachary Turner
d9045e6999 [llvm-pdbutil] Dig deeper into the PDB and DBI streams when explaining.
This will show more detail when using `llvm-pdbutil explain` on an
offset in the DBI or PDB streams.  Specifically, it will dig into
individual header fields and substreams to give a more precise
description of what the byte represents.

llvm-svn: 328878
2018-03-30 17:16:50 +00:00
Zachary Turner
8f94d26d85 [PDB] Print some more details when explaining MSF fields.
When we determine that a field belongs to an MSF super block or
the free page map, we wouldn't print any additional information.

With this patch, we now print the value of the field (for super
block fields) or the allocation status of the specified byte (in
the case of offsets in the FPM).

llvm-svn: 328808
2018-03-29 17:45:34 +00:00
Zachary Turner
5bf1fbb5c2 [PDB] Fix a bug in the explain subcommand.
We were trying to dig into the super block fields and print a
description of the field at the specified offset, but we were
printing the wrong field due to an off-by-one-field-error.

llvm-svn: 328804
2018-03-29 17:11:14 +00:00
Zachary Turner
a82ff1f9b5 Remove unused function.
llvm-svn: 328802
2018-03-29 16:46:47 +00:00
Zachary Turner
a30de93265 [PDB] Add an explain subcommand.
When investigating various things, we often have a file offset
and what to know what's in the PDB at that address.  For example
we may be doing a binary comparison of two LLD-generated PDBs
to look for sources of non-determinism, or we may wish to compare
an LLD-generated PDB with a Microsoft generated PDB for sources
of byte-for-byte incompatibility.  In these cases, we can do a
binary diff of the two files, and once we find a mismatched byte
we can use explain to figure out what that byte is, immediately
honining in on the problem.

This patch implements this by trying to narrow the meaning of
a particular file offset down as much as possible.

Differential Revision: https://reviews.llvm.org/D44959

llvm-svn: 328799
2018-03-29 16:28:20 +00:00