1. If part of a register is re-defined, an implicit kill and an implicit def are added to denote read / mod / write. However, this should only be necessary if the register is actually read later. This is a performance issue.
2. If a sub-register is being defined, and it doesn't have a previous use, do not add a implicit kill to the last use of a super-register:
   = EAX, AX<imp-use,kill>
...
AX =
In this case, EAX is live but AX is killed, this is wrong and will cause the coalescer to do bad things.

llvm-svn: 48521

llvm-svn: 48520

llvm-svn: 48518

attribute instead of ".protected".

llvm-svn: 48516

Fix a x86-64 isel lowering bug that's been around forever. A x86-64 varargs function implicitly reads X86::AL, don't clobber it!

llvm-svn: 48515

for Release with optimization levels greater than -O0.

llvm-svn: 48513

numbers (more work to be done on aesthetics).

llvm-svn: 48512

llvm-svn: 48511

llvm-svn: 48510

llvm-svn: 48509

llvm-svn: 48507

indicate whether or not the new tag should be the outermost tag at the specified
location (in the case that other tags have been inserted at the same spot).

llvm-svn: 48506

code as HTML.  Added a new driver option "--emit-html" to dump the source
of the main input file as HTML.

llvm-svn: 48505

*before* and after a specific location.

llvm-svn: 48504

need to be skipped over when AfterInserts == true, as multiple deltas
may share the same FileLoc.

llvm-svn: 48503

llvm-svn: 48501

llvm-svn: 48500

llvm-svn: 48499

Do not pass -g flag when compiling tests, so remove the C.Flags. This only happens if you have a debug build of llvm.

llvm-svn: 48498

llvm-svn: 48496

llvm-svn: 48493

variables and methods themselves only use unsigned.)

llvm-svn: 48492

Target independent DAG transform to use truncate for field extraction + sign extend on targets where this is profitable. Passes nightly on x86-64.

llvm-svn: 48491

Rewrite code that propagate isDead information after a dead copy is coalesced. This remove some ugly spaghetti code and fixed a number of subtle bugs.

llvm-svn: 48490

llvm-svn: 48488

llvm-svn: 48487

makefile around (just change Makefile.parallel to Makefile to
get back old functionality).

To run parallel tests, specify

    make -jN test # where N = num of CPUs * 2

to get detailed output, run

    make -jN test VERBOSE=1

to only get error descriptions *after the tests have run*, type

    make report

this gives you the extra information which was omitted in non-VERBOSE
mode.

llvm-svn: 48486

llvm-svn: 48485

llvm-svn: 48484

llvm-svn: 48483

llvm-svn: 48482

llvm-svn: 48479

llvm-svn: 48478

llvm-svn: 48477

Do not run analysis pass again if analysis info is still available.
This fixes PR1441.

llvm-svn: 48476

llvm-svn: 48474

llvm-svn: 48470

llvm-svn: 48469

llvm-svn: 48468

llvm-svn: 48467