llvm-svn: 112583

where we hash, compare and fold, instead of one iteration where we build up
the hash buckets and a second one to fold.

llvm-svn: 112582

Remove r111665, which implemented store-narrowing in InstCombine.  Chris discovered a miscompilation in it, and it's not easily
fixable at the optimizer level. I'll investigate reimplementing it in DAGCombine.

llvm-svn: 112575

llvm-svn: 112571

Use X86ISD::MOVSS and MOVSD to represent the movl mask pattern, also fix the handling of those nodes when seeking for scalars inside vector shuffles

llvm-svn: 112570

llvm-svn: 112568

Eventually, we want to disable physreg coalescing completely, and let the
register allocator do its job using hints.

This option makes it possible to measure the impact of disabling physreg
coalescing.

llvm-svn: 112567

llvm-svn: 112560

things we can't handle.

llvm-svn: 112559

llvm-svn: 112553

Re-apply r112539, being more careful to respect the return values of the constant folding methods.  Additionally,
use the ConstantExpr::get*() methods to simplify some constant folding.

llvm-svn: 112550

scheduling opportunities (extra instruction can go in between
MOVT / MOVW pair removing the stall).

llvm-svn: 112546

llvm-svn: 112545

llvm-svn: 112543

Fixes and cleanups pointed out by Chris.  In general, be careful to handle 0 results from ComputeValueKnownInPredecessors
(indicating undef), and re-use existing constant folding APIs.

llvm-svn: 112539

is meant to do exactly the same thing. Thanks to Jim Grosbach for pointing this
out! :-)

llvm-svn: 112538

llvm-svn: 112535

kill flag.

This could cause duplicate kill flags when the same register was used twice in a
continuous sequence of STRs.

There is no small test case. <rdar://problem/8218046>

llvm-svn: 112534

is-function-local flag in metadata uniquing bits.

llvm-svn: 112528

Auto-upgrade the old intrinsic and update tests.

llvm-svn: 112507

Make ARM add rN, sp, #imm instructions rematerializable. That's how the address of locals is calculated, so this should
help relieve register pressure a bit. Recalculating the local address is
almost always going to be better than spilling.

llvm-svn: 112503

1) nuke ConstDataCoalSection, which is dead.
2) revise my previous patch for rdar://8018335,
  which was completely wrong.  Specifically, it doesn't 
  make sense to mark __TEXT,__const_coal as PURE_INSTRUCTIONS,
  because it is for readonly data.  templates (it turns out)
  go to const_coal_nt.  The real fix for rdar://8018335 was
  to give ConstTextCoalSection a section kind of ReadOnly 
  instead of Text.

llvm-svn: 112496

operand is killed, add it to the expanded instruction as an implicit kill
operand instead of marking the individual subregs with kill flags.  This
should work better in general and also handles the case for VST3 where one
of the subregs was not referenced in the expanded instruction and so was
not marked killed.

llvm-svn: 112494

MCELF: The value of all common symbols is the offset from the start of the section.  Patch by Roman Divacky.

llvm-svn: 112492

It is possible to try to merge a not-constant with a constantrage, when dealing with ptrtoint ConstantExpr's.
Unfortunately, the only testcase I have for this is huge and doesn't reduce well because the error is
sensitive to iteration-order issues, since the problem only occurs when merging values in a particular order.

llvm-svn: 112489

llvm-svn: 112479

On Mingw and Cygwin, the symbol __main is resolved to
callee's(eg. tools/lli) one, to invoke wrong duplicated ctors
(and register wrong callee's dtors with atexit(3)).
We expect, by callee, ExecutionEngine::runStaticConstructorsDestructors()
is called before ExecutionEngine::runFunctionAsMain() is called.

llvm-svn: 112474

The value is offset from the start of the section for non-common symbols, submitted by Jordan Gordeev.

llvm-svn: 112473

llvm-svn: 112472

link for now and can be adjusted later. Patch by Roman Divacky.

llvm-svn: 112471

Triple class constructor.  Only valid triples should now be used
inside LLVM - front-ends are now responsable for rejecting or
correcting invalid target triples.  The Triple::normalize method
can be used to straighten out funky triples provided by users.
Give this a whirl through the buildbots to see if I caught all
places where triples enter LLVM.

llvm-svn: 112470

llvm-svn: 112463

optional modified register (instead of reg0). Along with r112461 it will make
sure that the optional define of CPSR is marked as "def" and will thus mark the
instructions using these classes (t2ANDS*) as setting the 's' flag.

llvm-svn: 112462

said (physical) register.

llvm-svn: 112461

llvm-svn: 112459

instead of PromoteMemToReg.  This allows it to stop using DF and DT,
eliminating a computation of DT and DF from clang -O3.  Clang is now
down to 2 runs of DomFrontier.

llvm-svn: 112457

llvm-svn: 112455

assertingvh so we get a violent explosion if the pointer dangles.

2) Fix AliasSetTracker::deleteValue to remove call sites with
   by-pointer comparisons instead of by-alias queries.  Using
   findAliasSetForCallSite can cause alias sets to get merged
   when they shouldn't, and can also miss alias sets when the
   call is readonly.

#2 fixes PR6889, which only repros with a .c file :(

llvm-svn: 112452

out of loops, just delete them.

llvm-svn: 112451

symtab manipulation, so its faster (in addition to being
more elegant)

llvm-svn: 112450