llvm-svn: 38495

llvm-svn: 38494

llvm-svn: 38493

Thanks to Lauro for spotting this!

llvm-svn: 38491

undef in either the left or right operand.

llvm-svn: 38489

When a node value is only used by a CopyToReg, use the user's dest. This should not be restricted to nodes that produce only a single value.

llvm-svn: 38485

llvm-svn: 38484

llvm-svn: 38483

Move some key maps from std::map to DenseMap.  This improves the time to optimize Anton's testcase from 17.5s
to 15.7s.

llvm-svn: 38480

Use a cheaper test, delaying calling find_leader() until we know that it's necessary.  This improves
the time to optimize Anton's testcase from 21.1s to 17.6s.

llvm-svn: 38479

in addition to the intrinsic forms. Add spill-folding entries for these new
instructions, and for the scalar min and max instrinsic instructions which
were missing. And add some preliminary ISelLowering code for using the new
non-intrinsic vector sqrt instruction, and fneg and fabs.

llvm-svn: 38478

llvm-svn: 38477

This reduces the time to optimize Anton's testcase from 31.2s to 21.s!

llvm-svn: 38475

llvm-svn: 38474

simplifying loads and stores.

llvm-svn: 38473

llvm-svn: 38472

register ordering, for both physical and virtual registers. Update the PPC
target lowering for calls to expect registers for the call result to
already be in target order.

llvm-svn: 38471

Make the assignment operator for SmallPtrSet return a reference, and fix a long-standing bug in the copy
ctor while I'm at it.

Thanks to Chris Lattner for help with this patch.

llvm-svn: 38470

llvm-svn: 38469

updating it with calls to setIndexedLoadAction/setIndexedStoreAction,
which only update a few bits at a time. This avoids ostensible
undefined behavior of operationg on values which may be
trap-representations, and as a practical matter fixes errors from
valgrind, which doesn't track uninitialized memory with bit
granularity.

llvm-svn: 38468

Patch by Chis Lattner.

llvm-svn: 38467

zero if they see a target triple they don't understand.

llvm-svn: 38463

llvm-svn: 38460

llvm-svn: 38459

DAGCombiner.cpp: In member function 'llvm::SDOperand<unnamed>::DAGCombiner::visitOR(llvm::SDNode*)':
DAGCombiner.cpp:1608: warning: passing negative value '-0x00000000000000001' for argument 1 to 'llvm::SDOperand llvm::SelectionDAG::getConstant(uint64_t, llvm::MVT::ValueType, bool)'

oiy.

llvm-svn: 38458

use SCEVConstant::get instead of SCEVUnknown::get when constructing a SCEV
for a ConstantInt.

llvm-svn: 38457

llvm-svn: 38453

often.  This improves Anton's testcase from 36s to 32s.

llvm-svn: 38441

in the set.  For the moment, this results in a slight performance decrease, but
it lays the groundwork for future improvements.

llvm-svn: 38439

the same value number.  This fixes an infinite loop on 444.namd.

llvm-svn: 37967

llvm-svn: 37966

llvm-svn: 37965

llvm-svn: 37964

llvm-svn: 37962

llvm-svn: 37961

llvm-svn: 37960

llvm-svn: 37959

alias analysis, adding caching and lazy computation of queries.  This will
be used in planned improvements to memory access optimizations.

llvm-svn: 37958

llvm-svn: 37955

llvm-svn: 37954