llvm-svn: 143562

llvm-svn: 143561

llvm-svn: 143559

Fix the issue that r143552 was trying to address the _right_ way.  One-register lists are legal on LDM/STM instructions, but we should not print the PUSH/POP aliases when they appear.  This fixes round tripping on this instruction.

llvm-svn: 143557

Thanks to Nick for spotting this!

llvm-svn: 143556

The rules disallowing single-register reglist operands only apply to the POP alias, not to LDM/STM instructions.  Revert r143552.

llvm-svn: 143553

Register list operands are not allowed to contain only a single register.  Alternate encodings are used in that case.

llvm-svn: 143552

llvm-svn: 143549

llvm-svn: 143547

We've been hitting asserts in this code due to the many supported
combintions of modes (iv-rewrite/no-iv-rewrite) and IV types. This
second rewrite of the code attempts to deal with these cases systematically.

llvm-svn: 143546

the mailing list. Suggestions for other statistics to collect would be
awesome. =]

Currently these are implemented as a separate pass guarded by a separate
flag. I'm not thrilled by that, but I wanted to be able to collect the
statistics for the old code placement as well as the new in order to
have a point of comparison. I'm planning on folding them into the single
pass if / when there is only one pass of interest.

llvm-svn: 143537

llvm-svn: 143536

silence -Wparentheses.

llvm-svn: 143534

llvm-svn: 143529

Add support to the linker to lazily link in functions. This change only links functions marked with specific linkage (internal, private, linker_private, linker_private_weak, linker_private_weak_def_auto, linkonce, linkonce_odr, and available_externally) if they have uses in the destination module. Instead of automatically linking, these functions are placed onto a worklist to be processed in the final stage of linking. We iterate over the list and if any functions on the list have uses in the destination module, we link them in and repeat the process until no changes in the state (uses) has changed. This means that any functions in the LazilyLink worklist that have a use in the destination module will be linked in and none that don't. 

llvm-svn: 143524

llvm-svn: 143523

Narrowest possible fix for PR11279.

llvm-svn: 143522

it is separating the directory part from the basename of the FileName.  Noticed 
that this:

  .file 1 "dir/foo"

when assembled got the two parts switched.  Using the Mac OS X dwarfdump tool
it can be seen easily:

% dwarfdump -a a.out
include_directories[  1] = 'foo'
                Dir  Mod Time   File Len   File Name
                ---- ---------- ---------- ---------------------------
file_names[  1]    1 0x00000000 0x00000000 dir
...

Which should be:
...
include_directories[  1] = 'dir'
                Dir  Mod Time   File Len   File Name
                ---- ---------- ---------- ---------------------------
file_names[  1]    1 0x00000000 0x00000000 foo

llvm-svn: 143521

For example, labels from Objective-C sources.

llvm-svn: 143511

llvm-svn: 143510

-g flag.  In this part we generate the .file for the source being assembled and
the .loc's for the assembled instructions.

The next part will be to generate the dwarf Compile Unit DIE and a dwarf
subprogram DIE for each non-temporary label.

Once the next part is done test cases will be added.  rdar://9275556

llvm-svn: 143509

llvm-svn: 143507

llvm-svn: 143502

llvm-svn: 143501

Teach the x86 backend a couple tricks for dealing with v16i8 sra by a constant splat value.  Fixes PR11289.

llvm-svn: 143498

They don't impact the MCJIT rtdyld, so just mask them off for now.

llvm-svn: 143472

This can happen if the address + addend is less than the start of the cp / dp.

llvm-svn: 143459

llvm-svn: 143452

Make sure we use the right insertion point when instcombine replaces a PHI with another instruction.  (Specifically, don't insert an arbitrary instruction before a PHI.)  Fixes PR11275.

llvm-svn: 143437

llvm-svn: 143413

No test case, spotted by inspection.

llvm-svn: 143407

llvm-svn: 143406

Patch by Kostya Serebryany.

llvm-svn: 143405

llvm-svn: 143369

Cleanup. Document. Make sure that this build_vector optimization only runs before the op legalizer and that the used type is legal.

llvm-svn: 143358

The _fixed variants have a writeback operand, but not a stride operand.
Split the conditional flag to distinguish the cases.

llvm-svn: 143356

llvm-svn: 143351

llvm-svn: 143331

-enable-dwarf-directory.

llvm-svn: 143326

llvm-svn: 143319