more operands and the two first operands are constrained to be the
same. The pass takes an instruction of the form:

        a = b op c

and transforms it into:

        a = b
        a = a op c

and also preserves live variables.

llvm-svn: 10512

llvm-svn: 10511

killing instruction is tracked. This causes the LiveIntervals to
create bogus intervals. The workaound is to add a range to the
interval from the redefinition to the end of the basic block.

llvm-svn: 10510

Move some of the longer LiveIntervals::Interval method out of the
header and add debug information to them. Fix bug and simplify range
merging code.

llvm-svn: 10509

llvm-svn: 10508

AliasSetTracker as well.

llvm-svn: 10507

a pointer from an AliasSet, maintain the pointer values on a doubly linked
list instead of a singly linked list, to permit efficient removal from the
middle of the list.

llvm-svn: 10506

llvm-svn: 10505

llvm-svn: 10504

* Doxygenified comments
* Reordered #includes

llvm-svn: 10503

llvm-svn: 10502

llvm-svn: 10501

implementation of a Target{RegInfo, InstrInfo, Machine, etc} now has a separate
header and a separate implementation file.

This means that instead of a massive SparcInternals.h that forces a
recompilation of the whole target whenever a minor detail is changed, you should
only recompile a few files.

Note that SparcInternals.h is still around; its contents should be minimized.

llvm-svn: 10500

and hence the links, all change.

llvm-svn: 10495

llvm-svn: 10494

llvm-svn: 10493

llvm-svn: 10489

llvm-svn: 10488

llvm-svn: 10487

llvm-svn: 10483

llvm-svn: 10479

custom memory-management implementations (e.g., bash).

llvm-svn: 10478

llvm-svn: 10473

llvm-svn: 10471

llvm-svn: 10470

llvm-svn: 10469

llvm-svn: 10468

llvm-svn: 10467

llvm-svn: 10466

llvm-svn: 10465

llvm-svn: 10464

Make the Timer code give correct user/system/user+system times when -track-memory is enabled

llvm-svn: 10463

llvm-svn: 10462

    a) remove opIsUse(), opIsDefOnly(), opIsDefAndUse()
    b) add isUse(), isDef()
    c) rename opHiBits32() to isHiBits32(),
              opLoBits32() to isLoBits32(),
              opHiBits64() to isHiBits64(),
              opLoBits64() to isLoBits64().

This results to much more readable code, for example compare
"op.opIsDef() || op.opIsDefAndUse()" to "op.isDef()" a pattern used
very often in the code.

llvm-svn: 10461

llvm-svn: 10460

llvm-svn: 10459

llvm-svn: 10458

Add capability to represent volatile AliasSet's
Propagate this information from loads&stores into the aliassets

llvm-svn: 10457

llvm-svn: 10456

llvm-svn: 10455