This commit broke an external linux bot and gave a compile-time warning.

llvm-svn: 156556

The .td files specify a tree of sub-registers. Store that tree as
ExplicitSubRegs lists in CodeGenRegister instead of extracting it from
the Record when needed.

llvm-svn: 156555

of recursion, to avoid excessive stack usage on deep expressions.

llvm-svn: 156554

llvm-svn: 156553

// rdar://11374235

llvm-svn: 156552

llvm-svn: 156551

This patch will optimize the following cases:
  sub r1, r3 | sub r1, imm
  cmp r3, r1 or cmp r1, r3 | cmp r1, imm
  bge L1

TO
  subs r1, r3
  bge  L1 or ble L1

If the branch instruction can use flag from "sub", then we can replace
"sub" with "subs" and eliminate the "cmp" instruction.

rdar: 10734411
llvm-svn: 156550

Instruction::IsIdenticalToWhenDefined.

This manifested itself when inlining two calls to the same function.  The 
inlined function had a switch statement that returned one of a set of 
global variables.  Without this modification, the two phi instructions that 
chose values from the branches of the switch instruction inlined from the 
callee were considered equivalent and jump-threading replaced a load for the 
first switch value with a phi selecting from the second switch, thereby 
producing incorrect code.

This patch has been tested with "make check-all", "lnt runteste nt", and 
llvm self-hosted, and on the original program that had this problem, 
wireshark.

<rdar://problem/11025519>

llvm-svn: 156548

[tsan] old-dstyle Makefile for tests; two helper scripts that analyze the assembly code of the hot functions

llvm-svn: 156547

llvm-svn: 156546

llvm-svn: 156545

llvm-svn: 156544

llvm-svn: 156543

Algorithm description: http://code.google.com/p/thread-sanitizer/wiki/ThreadSanitizerAlgorithm

Status:
The tool is known to work on large real-life applications, but still has quite a few rough edges.
Nothing is guaranteed yet.

The tool works on x86_64 Linux.
Support for 64-bit MacOS 10.7+ is planned for late 2012.
Support for 32-bit OSes is doable, but problematic and not yet planed.

Further commits coming:
  - tests
  - makefiles
  - documentation
  - clang driver patch

The code was previously developed at http://code.google.com/p/data-race-test/source/browse/trunk/v2/
by Dmitry Vyukov and Kostya Serebryany with contributions from
Timur Iskhodzhanov, Alexander Potapenko, Alexey Samsonov and Evgeniy Stepanov.

llvm-svn: 156542

llvm-svn: 156541

llvm-svn: 156540

Starting r155461 we are able to select patterns for vbroadcast even when the load op is used by other users.

Fix PR11900.

llvm-svn: 156539

llvm-svn: 156538

from the frontend when the location is invalid and the SourceManager null.

Instead of keeping the SourceManager object in DiagnosticRenderer, propagate it
to the calls accordingly (as reference when it is expected to not be null, or pointer
when it may be null).
This effectively makes DiagnosticRenderer not tied to a specific SourceManager,
removing a hack from TextDiagnosticPrinter.

rdar://11386874

llvm-svn: 156536

Fixed a case where the install header phase in the Xcode project would not set the LLDB_VERSION #define correctly. It has now been fixed to key off of the CURRENT_PROJECT_VERSION which will get auto updated with "agvtool bump -all". This was done by adding a build setting to the install-headers makefile based target.

llvm-svn: 156535

llvm-svn: 156534

llvm-svn: 156533

Fixed the DisassemblerLLVMC disassembler to parse more efficiently instead of parsing opcodes over and over. The InstructionLLVMC class now only reads the opcode in the InstructionLLVMC::Decode function. This can be done very efficiently for ARM and architectures that have fixed opcode sizes. For x64 it still calls the disassembler to get the byte size.

Moved the lldb_private::Instruction::Dump(...) function up into the lldb_private::Instruction class and it now uses the function that gets the mnemonic, operandes and comments so that all disassembly is using the same code.

Added StreamString::FillLastLineToColumn() to allow filling a line up to a column with a character (which is used by the lldb_private::Instruction::Dump(...) function).

Modified the Opcode::GetData() fucntion to "do the right thing" for thumb instructions.

llvm-svn: 156532

// FIXME: This needs to happen before we merge declarations. Then,
// let attribute merging cope with attribute conflicts.

This was already being done for variables, but for functions we were merging
then first and then applying the attributes. To avoid duplicating merging
logic, some of the helpers in SemaDeclAttr.cpp become methods that can
handle merging two attributes in one decl or inheriting attributes from one
decl to another.

With this change we are now able to produce errors for variables with
incompatible visibility attributes or warn about unused dllimports in
variables.

This changes the attribute list iteration back to being in reverse source
code order, as that matches what decl merging does and avoids differentiating
the two cases is the merge*Attr methods.

llvm-svn: 156531

We report a leak at a point a leaked variable is no longer accessible.
The statement that happens to be at that point is not relevant to the
leak diagnostic and, thus, should not be highlighted.

radar://11178519

llvm-svn: 156530

If the ObjC Step Through Trampoline plan causes a target crash, properly propagate the error back to
the controlling plans so that they don't lose control.

Also change "ThreadPlanStepThrough" to take the return StackID for its backstop breakpoint as an argument
to the constructor rather than having it try to figure it out itself, since it might get it wrong whereas
the caller always knows where it is coming from.

rdar://problem/11402287

llvm-svn: 156529

I initially assumed that the subreg graph was a tree. That may not be true.

llvm-svn: 156524

Patch by Yury Mikhaylov <yury.mikhaylov@gmail.com>.

llvm-svn: 156523

We don't create any declaration to mark the explicit instantiation of function
templates other than the instantiation itself, so visit that when traversing
the function template decl.

This is a temporary fix, pending the creation of a Decl node to represent the
explicit instantiation.

Patch by Daniel Jasper!

llvm-svn: 156522

llvm-svn: 156521

end of a basic block if there's no store.

llvm-svn: 156520

This mapping is for internal use by TableGen. It will not be exposed in
the generated files.

Unfortunately, the mapping is not completely well-defined. The X86 xmm
registers appear with multiple sub-register indices in the ymm
registers. This is because of the odd idempotent sub_sd and sub_ss
sub-register indices. I hope to be able to eliminate them entirely, so
we can require the sub-registers to form a tree.

For now, just place the canonical sub_xmm index in the mapping, and
ignore the idempotents.

llvm-svn: 156519

That's what it does.

llvm-svn: 156518

'*' on objective-c class name was misplaced.
// rdar://11311333

llvm-svn: 156517

refactor code a bit to enable future changes to support run-time information
add support to compute allocation sizes at run-time if penalty > 1 (e.g., malloc(x), calloc(x, y), and VLAs)

llvm-svn: 156515

in expressions.

llvm-svn: 156514

llvm-svn: 156513

-Wconditional-uninitialized into -Wuninitialized.

llvm-svn: 156512

Make ctrl-c terminate the current input line and start an empty line, instead of the previous content.

rdar://problem/11412821

llvm-svn: 156510

llvm-svn: 156509