llvm-svn: 115002

llvm-svn: 114999

knows about them. This is not necessary on 10.6 and later.

llvm-svn: 114997

estimates.

llvm-svn: 114981

Rather than having arbitrary cutoffs, actually try to cost model the conversion.

For now, the constants are tuned to more or less match our existing behavior, but these will be
changed to reflect realistic values as this work proceeds.

llvm-svn: 114973

llvm-svn: 114969

llvm-svn: 114920

and asserts.

llvm-svn: 114843

support aligned comm.  Detect when compiling for 10.4 and don't
emit an alignment for comm.  THis will hopefully fix PR8198.

llvm-svn: 114817

Fixed some tests to avoid LiveIntervals::getInstructionFromIndex(..) overhead where possible. Thanks to Jakob for the suggestions.

llvm-svn: 114798

llvm-svn: 114794

Removed VNInfo::isDefAccurate(). Def "accuracy" can be checked by testing whether LiveIntervals::getInstructionFromIndex(def) returns NULL.

llvm-svn: 114791

llvm-svn: 114779

and it will be removed shortly.

llvm-svn: 114778

llvm-svn: 114776

llvm-svn: 114767

llvm-svn: 114750

llvm-svn: 114736

Revert 114634 for now since buildbot claim it broke Clang self-hosting. I doubt it but it's possible it's exposing another bug somewhere.

llvm-svn: 114681

Patch by Nathan Jeffords!

llvm-svn: 114661

llvm-svn: 114634

close to their sources to facilitate coalescing.

llvm-svn: 114631

when the unconditional branch destination is the fallthrough block. The
canonicalization makes it easier to allow optimizations on DAGs to invert
conditional branches. The branch folding pass (and AnalyzeBranch) will clean up
the unnecessary unconditional branches later.

This is one of the patches leading up to disabling codegen prepare critical edge
splitting.

llvm-svn: 114630

Moved the PBQP allocator class out of the header and back in to the cpp file to hide the gory details.
Allocator instances can now be created by calling createPBQPRegisterAllocator.

Tidied up use of CoalescerPair as per Jakob's suggestions.

Made the new PBQPBuilder based construction process the default. The internal construction process
remains in-place and available via -pbqp-builder=false for now. It will be removed shortly if the new
process doesn't cause any regressions.

llvm-svn: 114626

lowered using a series of shifts.
Fixes <rdar://problem/8285015>.

llvm-svn: 114599

llvm-svn: 114585

creating it before and subtracting split ranges.

This way, the SSA update code in LiveIntervalMap can properly create and use new
phi values in dupli. Now it is possible to create split regions where a value
escapes along two different CFG edges, creating phi values outside the split
region.

This is a work in progress and probably quite broken.

llvm-svn: 114492

llvm-svn: 114490

that complex patterns are matched after the entire pattern has
a structural match, therefore the NodeStack isn't in a useful
state when the actual call to the matcher happens.

llvm-svn: 114489

If only user of a vreg is an copy instruction to export copy of vreg out of current basic block then insert DBG_VALUE so that debug value of the variable is also transfered to new vreg.
Testcase is in r114476.
This fixes radar 8412415.

llvm-svn: 114478

llvm-svn: 114474

the predicate to discover the number of sign bits.  Enhance X86's target lowering to provide
a useful response to this query.

llvm-svn: 114473

matched, allow ComplexPatterns to opt into getting the parent node
of the operand being matched.

llvm-svn: 114472

llvm-svn: 114469

I think I've audited all uses, so it should be dependable for address spaces,
and the pointer+offset info should also be accurate when there.

llvm-svn: 114464

llvm-svn: 114463

llvm-svn: 114461

llvm-svn: 114459

llvm-svn: 114455

and store intrinsics are represented with MemIntrinsicSDNodes.

llvm-svn: 114454