current store implementation is now encapsulated by BasicStore.

These changes prompted some long due constification of ValueState. Much of the
diffs in this patch include adding "const" qualifiers.

llvm-svn: 53423

in Value, to make use of some otherwise unused space. Use this
field to shrink LoadSDNode and StoreSDNode by moving the
addressing mode and ext/trunc fields there.

llvm-svn: 53422

llvm-svn: 53419

llvm-svn: 53418

llvm-svn: 53417

in the repository.

llvm-svn: 53416

other passes.

llvm-svn: 53415

llvm-svn: 53414

llvm-svn: 53413

llvm-svn: 53412

llvm-svn: 53411

his work on legalizetypes.

llvm-svn: 53410

Lack of these caused a bootstrap failure with Fortran
on x86-64 with LegalizeTypes turned on.  While there,
be nice to 16 bit machines and support expansion of
i32 too.

llvm-svn: 53408

Be nice to 16 bit machines by supporting FP_TO_XINT
expansion for these.

llvm-svn: 53407

llvm-svn: 53406

was doing there: FP_ROUND returns a float, not an
integer.

llvm-svn: 53405

in CreateStackStoreLoad is good enough for both
the source and destination types.

llvm-svn: 53404

llvm-svn: 53403

a ginormous value (eg: i128 -1).

llvm-svn: 53402

llvm-svn: 53401

Rewrite the DeadArgumentElimination pass, to use a more explicit tracking of
dependencies between return values and/or arguments. Also make the handling of
arguments and return values the same.

The pass now looks properly inside returned structs, but only at the first
level (ie, not inside nested structs).

This version fixed a few more bugs and was cleaned up a bit. It now passes all
of LLVM's testing, and should still pass SPEC2006. There is still a minor bug
with regard to returning nested structs. Since there is currently nothing that
emits such IR, I will fix that in a seperate commit (partly because it requires
a non-trivial fix).

llvm-svn: 53400

- Change the horrible N^2 isRegReDefinedByTwoAddr. Now callers must supply the operand index of def machineoperand and at most one full scan of non-implicit operands is needed.
- Change local register allocator to use the new isRegReDefinedByTwoAddr instead of reinventing the wheel.

llvm-svn: 53394

llvm-svn: 53393

linked from anywhere. It will be linked when content is filled in.

Page by Csaba Hruska!

llvm-svn: 53392

llvm-svn: 53391

Use DenseMap instead of std::map in local register allocation.  This improves the time on instcombine from .31s to .22s

llvm-svn: 53390

llvm-svn: 53389

llvm-svn: 53388

though that would be nice and make sense :).  Patch by Nathan Keynes!

llvm-svn: 53387

llvm-svn: 53386

llvm-svn: 53385

of all undefs into a single undef value.

llvm-svn: 53384

infinite recursion.  part of PR2529

llvm-svn: 53383

constants by element without caring how they are formed.

llvm-svn: 53382

constants by element without caring how they are formed.

llvm-svn: 53381

it for PR2529

llvm-svn: 53380

- Replace use of std::map<std::string, ..> with StringMap. Replace use of std::map with DenseMap, std::set with SmallPtrSet. This results in minor speed up.
- Some code clean up.

llvm-svn: 53379

llvm-svn: 53378

makes their special-case checks of use_size() less beneficial,
so remove them. This eliminates all but one use of use_size(),
which is in AssignTopologicalOrder, which uses it only once for
each node, and so can reasonably afford to recompute it, as
this allows the UsesSize field of SDNode to be removed
altogether.

llvm-svn: 53377

Simplify the parser a bit by looking at the next token without consuming it (by Preprocessor::LookNext):

-Remove ParseExpressionWithLeadingIdentifier and ParseAssignmentExprWithLeadingIdentifier.
-Separate ParseLabeledStatement from ParseIdentifierStatement.

llvm-svn: 53376