analysis.  Better is to look for cases with useful GEPs and use them
when possible.  When a pair of useful GEPs is not available, use the
raw SCEVs directly. This approach supports better analysis of pointer
dereferencing.

In parallel, all the test cases are updated appropriately.
Cases where we have a store to *B++ can now be analyzed!

llvm-svn: 168474

This patch provides support for the MIPS relocations:

    *)  R_MIPS_GOT_HI16
    *)  R_MIPS_GOT_LO16
    *)  R_MIPS_CALL_HI16
    *)  R_MIPS_CALL_LO16

These are used for large GOT instruction sequences.

Contributer: Jack Carter
llvm-svn: 168471

llvm-svn: 168460

functions added in r168456.

llvm-svn: 168458

llvm-svn: 168456

llvm-svn: 168455

referring to a GOT entry.

llvm-svn: 168453

llvm-svn: 168451

llvm-svn: 168450

llvm-svn: 168449

llvm-svn: 168448

Tests to follow in another patch.

llvm-svn: 168444

Patch by Job Noorman!

llvm-svn: 168440

llvm-svn: 168439

llvm-svn: 168437

llvm-svn: 168434

Now if we can transform an alloca into a single vector value, but it has
subvector, non-element accesses, we form the appropriate shufflevectors
to allow SROA to proceed. This fixes PR14055 which pointed out a very
common pattern that SROA couldn't handle -- mixed vec3 and vec4
operations on a single alloca.

llvm-svn: 168418

llvm-svn: 168417

Mark ISD::FMA as Legal instead of custom for x86 with FMA3/FMA4. Needed so that llvm.muladd can be converted to ISD::FMA for fp_contract.

llvm-svn: 168413

llvm-svn: 168409

llvm-svn: 168407

llvm-svn: 168402

around.

llvm-svn: 168401

llvm-svn: 168400

llvm-svn: 168399

llvm-svn: 168398

llvm-svn: 168396

everything else underneath.

llvm-svn: 168395

so that I can (someday) call SE->getSCEV without complaint.
No semantic change intended.

Patch from Preston Briggs <preston.briggs@gmail.com>.

llvm-svn: 168391

llvm-svn: 168388

llvm-svn: 168387

llvm-svn: 168384

llvm-svn: 168383

llvm-svn: 168368

[asan] don't instrument linker-initialized globals even with external linkage in -asan-initialization-order mode 

llvm-svn: 168367

[asan] make sure that linker-initialized globals (non-extern) are not instrumented even in -asan-initialization-order mode. This time with a test

llvm-svn: 168366

printing functions themselves.

Part of PR14324 (which should have just been a patch to the list, but
hey...)

llvm-svn: 168362

The issue is that we may end up with newly OOB loads when speculating
a load into the predecessors of a PHI node, and this confuses the new
integer splitting logic in some cases, triggering an assertion failure.
In fact, the branch in question must be dead code as it loads from
a too-narrow alloca. Add code to handle this gracefully and leave the
requisite FIXMEs for both optimizing more aggressively and doing more to
aid sanitizing invalid code which triggers these patterns.

llvm-svn: 168361

+ Take account of clobbers
+ Give outputs priority over inputs since they happen later.

llvm-svn: 168360

llvm-svn: 168359