extend it to handle the case where multiple RAUWs affect a single
SCEVUnknown.

Add a ScalarEvolution unittest to test for this situation.

llvm-svn: 109705

Pass the queried value by argument rather than in a member, in preparation for supporting PHI translation.

llvm-svn: 109701

ARM mode version of r109693. Remove incorrect substitution pattern for UXTB16. It wrongly assumed the input shift was actually a rotate. rdar://8240138

llvm-svn: 109696

Remove incorrect substitution pattern for UXTB16. It wrongly assumed the input shift was actually a rotate. rdar://8240138

llvm-svn: 109693

llvm-svn: 109691

llvm-svn: 109687

llvm-svn: 109686

llvm-svn: 109683

Get rid of LVIQuery as a distinct data structure, so that we don't have to initialize a new set of maps on every query.

llvm-svn: 109679

llvm-svn: 109656

alignment, fixing silent truncation of alignment values.

llvm-svn: 109653

The size of this object isn't used for anything - technically it is of variable
size.

This avoids a false positive from the assert in
X86InstrInfo::loadRegFromStackSlot, and fixes PR7735.

llvm-svn: 109652

the info from the .file directive and makes file and directory tables that
will eventually be put out as part of the dwarf info in the output file.

llvm-svn: 109651

llvm-svn: 109650

llvm-svn: 109649

llvm-svn: 109647

be using a C++ compiler to build.

Patch by Török Edwin!

llvm-svn: 109646

alloca instructions (constrained by their internal encoding),
and add error checking for it. Fix an instcombine bug which
generated huge alignment values (null is infinitely aligned).
This fixes undefined behavior noticed by John Regehr.

llvm-svn: 109643

llvm-svn: 109608

llvm-svn: 109605

EmitProgressBitcode.

llvm-svn: 109602

llvm-svn: 109598

of a std::vector.

llvm-svn: 109597

dereference is theoretically infinite. Put a cap on the computed
alignment to avoid overflow, noticed by John Regehr.

llvm-svn: 109596

to avoid undefined behavior on overflow, noticed by John Regehr.

llvm-svn: 109594

This is a temporary fix, until more elaborate changes are ready.

llvm-svn: 109593

llvm-svn: 109589

 - Designed as a simple wrapper to allow clients to attempt to catch crashes
   (memory errors, assertion violations, etc.) and do some kind of recovery.

 - Currently doesn't actually attempt to catch crashes.

llvm-svn: 109586

llvm-svn: 109585

llvm-svn: 109581

llvm-svn: 109580

llvm-svn: 109579

llvm-svn: 109578

llvm-svn: 109577

llvm-svn: 109576

llvm-svn: 109572

object, as it may still be referenced by SCEVs not cleaned up by the
use list traversal.

Also, in ScalarEvolution::forgetValue, only check for a SCEVUnknown
object for the original value, not for any value in the use list,
because other SCEVUnknown values aren't necessary obsolete at that
point.

llvm-svn: 109570

the old value.

llvm-svn: 109567

This is about 4x faster and smaller than the existing scalarization.

llvm-svn: 109566

llvm-svn: 109565