remove Evan's "ugly hack" that sorta attempted to get
x86-64 return conventions correct, but was never enabled.
We can now do the "right thing" with multiple return values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48635 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for calls that return two FP values in
ST(0)/ST(1).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48634 91177308-0d34-0410-b5e6-96231b3b80d8

disable a bogus assertion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48633 91177308-0d34-0410-b5e6-96231b3b80d8

Enable support for returning two long-double values in ST(0)/ST(1).
This allows us to compile fp-stack-2results.ll into:

_test:
fldz
fld1
ret

which returns 1 in ST(0) and 0 in ST(1).  This is needed for x86-64
_Complex long double.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48632 91177308-0d34-0410-b5e6-96231b3b80d8

Teach masked value is zero about add and sub, and use MVIZ to
simplify things like (X & 4) >> 1 == 2  --> (X & 4) == 4.

since it is obvious that the shift doesn't remove any bits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48631 91177308-0d34-0410-b5e6-96231b3b80d8

Undo 48570. Correctly match mmx shift instructions with an immediate operand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48627 91177308-0d34-0410-b5e6-96231b3b80d8

ignore the Output/ directory

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48626 91177308-0d34-0410-b5e6-96231b3b80d8

this directory is accidentally added

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48625 91177308-0d34-0410-b5e6-96231b3b80d8

These passes preserve CFG.
This patch fixes Benchmarks/Trimaran/enc-pc1/enc-pc1 failure reported by Grawp-PIC i386 nightly tester

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48623 91177308-0d34-0410-b5e6-96231b3b80d8

Incorporate feedback.
- Fix loop nest.
- Use RetVals.size()
- Check for null return value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48605 91177308-0d34-0410-b5e6-96231b3b80d8

C and Objective Caml bindings for mem2reg and reg2mem.

Patch by Erick Tryzelaar.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48602 91177308-0d34-0410-b5e6-96231b3b80d8

enable -analyze for andersens

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48601 91177308-0d34-0410-b5e6-96231b3b80d8

Take the old function's name.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48588 91177308-0d34-0410-b5e6-96231b3b80d8

ubyte and sbyte? what are those?

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48585 91177308-0d34-0410-b5e6-96231b3b80d8

add a note.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48583 91177308-0d34-0410-b5e6-96231b3b80d8

Check even more carefully before applying this DAGCombine transform.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48580 91177308-0d34-0410-b5e6-96231b3b80d8

Restore isCFGOnly property of various analysis passes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48579 91177308-0d34-0410-b5e6-96231b3b80d8

Fix this xform: (sra (shl X, m), result_size) -> (sign_extend (trunc (shl X, result_size - n - m)))

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48578 91177308-0d34-0410-b5e6-96231b3b80d8

detabify llvm, patch by Mike Stump!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48577 91177308-0d34-0410-b5e6-96231b3b80d8

Keep track of analysis information inherited from Module pass manager.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48576 91177308-0d34-0410-b5e6-96231b3b80d8

Add more patterns to match in the integer comparison test harnesses.
Fix bugs encountered, mostly due to range matching for immediates;
the CellSPU's 10-bit immediates are sign extended, covering a
larger range of unsigned values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48575 91177308-0d34-0410-b5e6-96231b3b80d8

80 col violation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48573 91177308-0d34-0410-b5e6-96231b3b80d8

Add intrinsics to match mmx shift builtin's with immediate operand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48569 91177308-0d34-0410-b5e6-96231b3b80d8

Add comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48567 91177308-0d34-0410-b5e6-96231b3b80d8

style and spelling

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48562 91177308-0d34-0410-b5e6-96231b3b80d8

#if 1  .. #endif markers do not add any value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48560 91177308-0d34-0410-b5e6-96231b3b80d8

Remove dead options.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48556 91177308-0d34-0410-b5e6-96231b3b80d8

PassInfo keep tracks whether a pass is an analysis pass or not.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48554 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for multiple return values for the PPC target by
converting call result lowering to use the CallingConvLowering
infastructure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48552 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-ld deserves disable-verify too.  opt shouldn't have all the fun options.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48550 91177308-0d34-0410-b5e6-96231b3b80d8

Don't loose incoming argument registers. Fix documentation style.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48545 91177308-0d34-0410-b5e6-96231b3b80d8

Fix comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48543 91177308-0d34-0410-b5e6-96231b3b80d8

Fix X86's isTruncateFree to not claim that truncate to i1 is free. This fixes Bill's testcase that failed for r48491.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48542 91177308-0d34-0410-b5e6-96231b3b80d8

Upgrade tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48538 91177308-0d34-0410-b5e6-96231b3b80d8

Upgrade tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48536 91177308-0d34-0410-b5e6-96231b3b80d8

add some convenience methods for creating GEP instructions and
struct types.  Patch by David Chisnall, with some tweaks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48531 91177308-0d34-0410-b5e6-96231b3b80d8

Upgrade tests to not use llvm-upgrade.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48530 91177308-0d34-0410-b5e6-96231b3b80d8

Upgrade tests to not use llvm-upgrade.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48529 91177308-0d34-0410-b5e6-96231b3b80d8

C bindings for Module-, Function-, and BasicBlock::iterator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48528 91177308-0d34-0410-b5e6-96231b3b80d8

Remove llvm-upgrade and update tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48527 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed a coalescer bug caused by a typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48526 91177308-0d34-0410-b5e6-96231b3b80d8

C and Objective Caml bindings for the various getParent methods of the IR.

Based on Erick Tryzelaar's patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48523 91177308-0d34-0410-b5e6-96231b3b80d8

Fix live variables issues:
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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48521 91177308-0d34-0410-b5e6-96231b3b80d8

Do not use virtual function to identify an analysis pass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48520 91177308-0d34-0410-b5e6-96231b3b80d8

On Darwin, GCC issues a ".globl" for something that has a "visibility protected"
attribute instead of ".protected".

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48516 91177308-0d34-0410-b5e6-96231b3b80d8

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!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48515 91177308-0d34-0410-b5e6-96231b3b80d8

Note that gcc 4.0.1 will trip internal LLVM asserts (e.g., pred_iterator) if compiling
for Release with optimization levels greater than -O0.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48513 91177308-0d34-0410-b5e6-96231b3b80d8

It might be nice to have this run as x86 on non-x86 platforms...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48511 91177308-0d34-0410-b5e6-96231b3b80d8

Temporarily revert r48491. It's breaking  test/CodeGen/X86/xorl.ll.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48510 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR 2160 by making sure arguments to external functions get marked as pointing to anything

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48509 91177308-0d34-0410-b5e6-96231b3b80d8

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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48498 91177308-0d34-0410-b5e6-96231b3b80d8

Make conversions of i8/i16 to ppcf128 work.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48493 91177308-0d34-0410-b5e6-96231b3b80d8

Dial down gcc's warnings: don't use 0UL when 0U suffices (and when the
variables and methods themselves only use unsigned.)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48492 91177308-0d34-0410-b5e6-96231b3b80d8

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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48491 91177308-0d34-0410-b5e6-96231b3b80d8

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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48490 91177308-0d34-0410-b5e6-96231b3b80d8

Upgrade tests to not use llvm-upgrade.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48484 91177308-0d34-0410-b5e6-96231b3b80d8

Upgrade tests to not use llvm-upgrade.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48483 91177308-0d34-0410-b5e6-96231b3b80d8

Get rid of compilation warnings.  Per Devang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48478 91177308-0d34-0410-b5e6-96231b3b80d8

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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48476 91177308-0d34-0410-b5e6-96231b3b80d8

Update heuritics that estimates cost of call instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48474 91177308-0d34-0410-b5e6-96231b3b80d8

Make Complex long long/double/long double work
in ppc64 mode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48459 91177308-0d34-0410-b5e6-96231b3b80d8

Clarify the unwind attribute.  Add assumption
about sret made by the optimizers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48452 91177308-0d34-0410-b5e6-96231b3b80d8

Fix for "make install" of ocaml docs. Patch by Erick Tryzelaar!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48451 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for escaping {} in asm strings, based on patch from Nick Burns.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48450 91177308-0d34-0410-b5e6-96231b3b80d8

Check in some #ifdef'd out code switching call argument
lowering over to SparcCallingConv.td.  We can't make the switch
yet because we can't say to pass f64 registers in 2 x i32 registers
with the td file yet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48449 91177308-0d34-0410-b5e6-96231b3b80d8

minor cleanups

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48448 91177308-0d34-0410-b5e6-96231b3b80d8

Unbreak JIT. Ignore TargetInstrInfo::IMPLICIT_DEF.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48447 91177308-0d34-0410-b5e6-96231b3b80d8

A first attempt at updating live intervals, with code lifted from
the coalescer.  This doesn't really work, but gets us farther than
before.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48446 91177308-0d34-0410-b5e6-96231b3b80d8

remove dead code

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48445 91177308-0d34-0410-b5e6-96231b3b80d8

Switch sparc from using LowerCallTo to using LowerOperation(CALL) like
other targets.  Use autogenerated calling conv to lower result of
calls.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48444 91177308-0d34-0410-b5e6-96231b3b80d8

Start moving sparc to use SparcCallingConv.td, switching over
return lowering first.  This fixes a bug where the top and bottom
of i64 values were returned in the wrong registers before.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48443 91177308-0d34-0410-b5e6-96231b3b80d8

split sparc lowering out into SparcISelLowering.{cpp|h} to follow
best practices.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48442 91177308-0d34-0410-b5e6-96231b3b80d8

refactor the LowerOperation code out to individual functions for
each lowering, which is 'best practice'.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48441 91177308-0d34-0410-b5e6-96231b3b80d8

Next round of PPC32 ABI changes.  Allow for gcc
behavior where a callee thinks a param will be
present in memory, even though the ABI doc says
it doesn't have to be.  Handle complex long long
and complex double (4 and 8 return regs).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48439 91177308-0d34-0410-b5e6-96231b3b80d8

various rotate fun.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48438 91177308-0d34-0410-b5e6-96231b3b80d8

ensure we continue matching x86-64 rotates.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48437 91177308-0d34-0410-b5e6-96231b3b80d8

__builtin_ia32_movntdqa reads memory

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48431 91177308-0d34-0410-b5e6-96231b3b80d8

Add a couple missing SSE4 instructions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48430 91177308-0d34-0410-b5e6-96231b3b80d8

C and Objective Caml bindings for the TargetData class.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48422 91177308-0d34-0410-b5e6-96231b3b80d8

Add assert for non-hexadecimal radixes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48421 91177308-0d34-0410-b5e6-96231b3b80d8

Housekeeping.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48420 91177308-0d34-0410-b5e6-96231b3b80d8

C and Objective Caml bindings for several scalar transforms.

Patch originally by Erick Tryzelaar, but has been modified somewhat.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48419 91177308-0d34-0410-b5e6-96231b3b80d8

Remove unnecessary includes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48418 91177308-0d34-0410-b5e6-96231b3b80d8

All of these tests had out of date syntax and were never even running through
llvm-upgrade because nobody noticed them failing.

Update to use new syntax and actually check for the right failure by looking at
the error message.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48417 91177308-0d34-0410-b5e6-96231b3b80d8

Functions are allowed to return structures. (Note that this test never failed.)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48416 91177308-0d34-0410-b5e6-96231b3b80d8

Regressions/ is long gone.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48415 91177308-0d34-0410-b5e6-96231b3b80d8

Commit works on regular functions too. Fix the syntax to allow @foo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48414 91177308-0d34-0410-b5e6-96231b3b80d8

C and Objective Caml bindings for PassManagers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48413 91177308-0d34-0410-b5e6-96231b3b80d8

Make insert_subreg a two-address instruction, vastly simplifying LowerSubregs pass. Add a new TII, subreg_to_reg, which is like insert_subreg except that it takes an immediate implicit value to insert into rather than a register.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48412 91177308-0d34-0410-b5e6-96231b3b80d8

Minor documentation fix.

Patch by Erick Tryzelaar.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48382 91177308-0d34-0410-b5e6-96231b3b80d8

Remove isImplicitDef TargetInstrDesc flag.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48381 91177308-0d34-0410-b5e6-96231b3b80d8

Replace all target specific implicit def instructions with a target independent one: TargetInstrInfo::IMPLICIT_DEF.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48380 91177308-0d34-0410-b5e6-96231b3b80d8

Expose Module::dump via C and Ocaml.

Patch by Erick Tryzelaar.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48379 91177308-0d34-0410-b5e6-96231b3b80d8

Expose Module::dump via C and Ocaml.

Patch by Erick Tryzelaar.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48378 91177308-0d34-0410-b5e6-96231b3b80d8

move the Use destructor where it belongs to

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48376 91177308-0d34-0410-b5e6-96231b3b80d8

Back out r48353. Not needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48375 91177308-0d34-0410-b5e6-96231b3b80d8

Do not generate special entries in the dwarf eh
table for nounwind calls.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48373 91177308-0d34-0410-b5e6-96231b3b80d8

Restore this member, which is used on win32.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48372 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR2138. Apparently any modification to a std::multimap (including remove entries for a different key) can invalidate multimap iterators.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48371 91177308-0d34-0410-b5e6-96231b3b80d8

this was removed from the Unix side.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48370 91177308-0d34-0410-b5e6-96231b3b80d8