Summary:
The bug was that the MIPS32R6/MIPS64R6/microMIPS32R6 versions of LSA and DLSA
(unlike the MSA version) failed to account for the off-by-one encoding of the
immediate. The range is actually 1..4 rather than 0..3.
Reviewers: vkalintiris
Subscribers: atanasyan, dsanders, llvm-commits
Differential Revision: http://reviews.llvm.org/D14015
llvm-svn: 252295
Summary:
Without these patterns we would generate a complete LL/SC sequence.
This would be problematic for memory regions marked as WRITE-only or
READ-only, as the instructions LL/SC would read/write to the protected
memory regions correspondingly.
Reviewers: dsanders
Subscribers: llvm-commits, dsanders
Differential Revision: http://reviews.llvm.org/D14397
llvm-svn: 252293
The current implementation does not work on darwin and can have issues with other OSes in future.
See http://reviews.llvm.org/D14427
Make it portable once and for all (minus usleep call).
Reviewed in:
http://reviews.llvm.org/D14434
llvm-svn: 252292
This checker looks for unsafe constructs in vforked process:
function calls (excluding whitelist), memory write and returns.
This was originally motivated by a vfork-related bug in xtables package.
Patch by Yury Gribov.
Differential revision: http://reviews.llvm.org/D14014
llvm-svn: 252285
This attribute allows the compiler to assume that the function never recurses into itself, either directly or indirectly (transitively). This can be used among other things to demote global variables to locals.
llvm-svn: 252282
Summary:
If the container expression was obtained from the point where "size" (which usually is a const method) is invoked, then the topmost node in this expression may be an implicit cast to const.
When the container is a data member, the check was trying to obtain the member expression directly and was failing in the case mentioned above. This is solved by ignoring implicit casts.
Reviewers: klimek
Subscribers: cfe-commits, alexfh
Differential Revision: http://reviews.llvm.org/D14378
llvm-svn: 252278
This patch implements R_MIPS_GOT16 relocation for global symbols in order to
generate some entries in GOT. Only reserved and global entries are supported
for now. For the detailed description about GOT in MIPS, see "Global Offset
Table" in Chapter 5 in the followin document:
ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf
In addition, the platform specific symbol "_gp" is added, see "Global Data
Symbols" in Chapter 6 in the aforementioned document.
Differential revision: http://reviews.llvm.org/D14211
llvm-svn: 252275
This adds the EH_RESTORE x86 pseudo instr, which is responsible for
restoring the stack pointers: EBP and ESP, and ESI if stack realignment
is involved. We only need this on 32-bit x86, because on x64 the runtime
restores CSRs for us.
Previously we had to keep the CATCHRET instruction around during SEH so
that we could convince X86FrameLowering to restore our frame pointers.
Now we can split these instructions earlier.
This was confusing, because we had a return instruction which wasn't
really a return and was ultimately going to be removed by
X86FrameLowering. This change also simplifies X86FrameLowering, which
really shouldn't be building new MBBs.
No observable functional change currently, but with the new register
mask stuff in D14407, CATCHRET will become a register allocator barrier,
and our existing tests rely on us having reasonable register allocation
around SEH.
llvm-svn: 252266
vendors & oses, especially on Apple, to handle the new environment
where we have more than macosx or ios (now we have watchos and tvos).
llvm-svn: 252264
Author: Sean Callanan <scallanan@apple.com>
Date: Tue Jun 23 13:52:24 2015 -0700
Memory history should not crash if it can't inspect its data. Added
error handling.
<rdar://problem/21231304>
llvm-svn: 252252
Summary:
The reason for it is limit of detecting ncurses on various systems. For
example, Ubuntu ships with <curses.h> and linkage from <ncurses.h>, <ncurses.h>
isn't detected by CMake. Detecting `<curses.h>` on NetBSD is reusing
conflicting header from the host curses(8) and pkgsrc's ncurses library.
ncurses ships on most (till conflicting) systems with curses.h. On NetBSD it
might be conflicting, so the ncurses headers are installed with pkgsrc to a
subdirectory "ncurses/".
Patch by Kamil Rytarowski. Thanks!
Reviewers: clayborg
Subscribers: youri, akat1, brucem, joerg, lldb-commits
Differential Revision: http://reviews.llvm.org/D14037
llvm-svn: 252250
Windows EH funclets need to always return to a single parent funclet. However, it is possible for earlier optimizations to combine funclets (probably based on one funclet having an unreachable terminator) in such a way that this condition is violated.
These changes add code to the WinEHPrepare pass to detect situations where a funclet has multiple parents and clone such funclets, fixing up the unwind and catch return edges so that each copy of the funclet returns to the correct parent funclet.
Differential Revision: http://reviews.llvm.org/D13274?id=39098
llvm-svn: 252249
Summary:
We frequently run bugpoint on a linked module that consists of all
modules we create while jitting the julia standard library. This module
has a very large number of compile units (10000+) in `llvm.dbg.cu`,
which didn't get reduced at all, requiring manual post processing.
This is an attempt to have bugpoint go through and attempt to reduce
the number of global named metadata nodes as well as their operands,
to cut down the number of roots for such metadata.
Reviewers: dexonsmith, reames, pete
Subscribers: pete, dexonsmith, reames, llvm-commits
Differential Revision: http://reviews.llvm.org/D14043
llvm-svn: 252247
so when it is run on a kext (which won't activate
any platform plugins), you'll get a warning message
which may be helpful to the user.
llvm-svn: 252245
Summary:
This does a broad first pass on cleaning up a lot of the noise when
using pylint on these scripts. It mostly addresses issues of:
* Mixed tabs and spaces.
* Trailing whitespace.
* Semicolons where they aren't needed.
* Incorrect whitespace around () and [].
* Superfluous parentheses.
There will be subsequent patches with further changes that build
upon these.
Reviewers: zturner, domipheus
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D14375
llvm-svn: 252244
Daniel Sanders