Reimplement r108639 in InstCombine rather than DAGCombine.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108687 91177308-0d34-0410-b5e6-96231b3b80d8

X86-64: Mark WINCALL and more tail call instructions as code gen only.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108685 91177308-0d34-0410-b5e6-96231b3b80d8

X86: Mark some tail call pseduo instruction as code gen only.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108684 91177308-0d34-0410-b5e6-96231b3b80d8

X86: Mark In32/64BitMode on LEAVE[64] and SYSEXIT[64].

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108683 91177308-0d34-0410-b5e6-96231b3b80d8

_[A-Z] identifiers are reserved for the implementation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108682 91177308-0d34-0410-b5e6-96231b3b80d8

MC/X86: We now match instructions like "incl %eax" correctly for the arch we are
assembling; remove crufty custom cleanup code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108681 91177308-0d34-0410-b5e6-96231b3b80d8

X86: Mark MOV.*_{TC,NOREX} instruction as code gen only, they aren't real.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108680 91177308-0d34-0410-b5e6-96231b3b80d8

X86: MOV8o8a, MOV8ao8, etc. are only valid in 32-bit mode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108679 91177308-0d34-0410-b5e6-96231b3b80d8

MC: Add WinCOFFStreamer implementation and merge common code from MachO
into MCObjectStreamer.

Origonal Windows COFF implementation by Nathan Jedffords.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108678 91177308-0d34-0410-b5e6-96231b3b80d8

TblGen/AsmMatcher: Add support for honoring instruction Requires<[]> attributes as part of the matcher.
 - Currently includes a hack to limit ourselves to "In32BitMode" and "In64BitMode", because we don't have the other infrastructure to properly deal with setting SSE, etc. features on X86.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108677 91177308-0d34-0410-b5e6-96231b3b80d8

Alphabetize.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108675 91177308-0d34-0410-b5e6-96231b3b80d8

Make .align parse correctly on platforms where .align is measured in bytes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108674 91177308-0d34-0410-b5e6-96231b3b80d8

llvmc: Add a new option type (switch_list).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108673 91177308-0d34-0410-b5e6-96231b3b80d8

tests: Force another triple.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108666 91177308-0d34-0410-b5e6-96231b3b80d8

Target: Give the TargetAsmParser access to the TargetMachine.
 - Unfortunate, but necessary for now to handle subtarget instruction matching. Eventually we should factor out the lower level target machine information so we don't need to do this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108664 91177308-0d34-0410-b5e6-96231b3b80d8

edis: Save the TargetMachine in the EDDisassembler object.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108663 91177308-0d34-0410-b5e6-96231b3b80d8

Test commit

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108662 91177308-0d34-0410-b5e6-96231b3b80d8

MC/AsmParser: Stop playing unsafe member function pointer calls, this isn't
portable enough.
 - Downside is we now double dispatch through a stub function, but this isn't
   performance critical.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108661 91177308-0d34-0410-b5e6-96231b3b80d8

tests: Force triples.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108658 91177308-0d34-0410-b5e6-96231b3b80d8

MC/AsmParser: Fix .abort and .secure_log_unique to accept arbitrary token
sequences, not just strings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108655 91177308-0d34-0410-b5e6-96231b3b80d8

MC/AsmParser: Add macro argument substitution support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108654 91177308-0d34-0410-b5e6-96231b3b80d8

MC/AsmParser: Add basic support for macro instantiation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108653 91177308-0d34-0410-b5e6-96231b3b80d8

MC/AsmParser: Add basic parsing support for .macro definitions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108652 91177308-0d34-0410-b5e6-96231b3b80d8

daniel doesn't hate me, he hates macpython 2.5, which
is a very reasonable position on life!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108650 91177308-0d34-0410-b5e6-96231b3b80d8

MC/AsmParser: Add .macros_{off,on} support, not that makes sense since we don't
support macros.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108649 91177308-0d34-0410-b5e6-96231b3b80d8

MC/AsmParser: Use Error() instead of calling PrintMessage() directly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108648 91177308-0d34-0410-b5e6-96231b3b80d8

MC/AsmParser: Fix TokError() to accept a Twine.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108647 91177308-0d34-0410-b5e6-96231b3b80d8

MC/AsmParser: Hide the AsmParser implementation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108646 91177308-0d34-0410-b5e6-96231b3b80d8

MC: Move several clients to using AsmParser constructor function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108645 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mc: Fix llvm-mc -as-lex.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108644 91177308-0d34-0410-b5e6-96231b3b80d8

Fix struct/class mismatch

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108642 91177308-0d34-0410-b5e6-96231b3b80d8

Add a testcase for r108639.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108640 91177308-0d34-0410-b5e6-96231b3b80d8

Add a DAGCombine xform to fold away redundant float->double->float conversions around sqrt instructions.
I am assured by people more knowledgeable than me that there are no rounding issues in eliminating this.

This fixed <rdar://problem/8197504>.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108639 91177308-0d34-0410-b5e6-96231b3b80d8

Added -pbqp-pre-coalescing flag to PBQP. If enabled this will cause PBQP to require
LoopSplitter be run prior to register allocation.

Entirely for testing purposes at the moment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108634 91177308-0d34-0410-b5e6-96231b3b80d8

fullStopTag cannot happen here, it is handled above

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108631 91177308-0d34-0410-b5e6-96231b3b80d8

Fix what seems like a clear buffer overflow, noticed by cppcheck.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108629 91177308-0d34-0410-b5e6-96231b3b80d8

Use isPrologLabel() instead of checking the opcode directly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108628 91177308-0d34-0410-b5e6-96231b3b80d8

the stackifier is global!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108626 91177308-0d34-0410-b5e6-96231b3b80d8

doxygenify some comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108625 91177308-0d34-0410-b5e6-96231b3b80d8

update CMakeLists.txt

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108620 91177308-0d34-0410-b5e6-96231b3b80d8

Removed unused inRange variable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108618 91177308-0d34-0410-b5e6-96231b3b80d8

Switched to array_pod_sort as per Chris's suggestion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108616 91177308-0d34-0410-b5e6-96231b3b80d8

LoopSplitter - intended to split live intervals over loop boundaries.
Still very much under development. Comments and fixes will be forthcoming.

(This commit includes some small tweaks to LiveIntervals & LoopInfo to support the splitter)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108615 91177308-0d34-0410-b5e6-96231b3b80d8

Another attempt at getting the clang self-host to like my instcombine patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108614 91177308-0d34-0410-b5e6-96231b3b80d8

Iterating over sets of pointers in a heuristic was a bad idea. Switching
any command line paramater changed the register allocation produced by
PBQP.

Turns out variety is not the spice of life.

Fixed some comparators, added others. All good now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108613 91177308-0d34-0410-b5e6-96231b3b80d8

Start of .sleb128/.uleb128 parsing support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108612 91177308-0d34-0410-b5e6-96231b3b80d8

unit test to go along with r108610

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108611 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR7658, a problem where type refinement can trigger
constant replacement which was botching its handling of
types.  Use of getType() instead of getRawType() was causing
the type map in constant folding to be updated wrong.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108610 91177308-0d34-0410-b5e6-96231b3b80d8

Work-in-progress parsing for ELF .section directive.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108609 91177308-0d34-0410-b5e6-96231b3b80d8

Add combiner patterns to more effectively utilize the BFI (bitfield insert)
instruction for non-constant operands. This includes the case referenced
in the README.txt regarding a bitfield copy.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108608 91177308-0d34-0410-b5e6-96231b3b80d8

Test for ELF .size directive.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108607 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for parsing .size directives for ELF.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108606 91177308-0d34-0410-b5e6-96231b3b80d8

MC/AsmParser: Lift Run() and TargetParser to base class.

Also, add constructor function for creating AsmParser instances.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108604 91177308-0d34-0410-b5e6-96231b3b80d8

add BFI to getTargetNodeName()

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108603 91177308-0d34-0410-b5e6-96231b3b80d8

Fix logic think-o

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108601 91177308-0d34-0410-b5e6-96231b3b80d8

Remove unnecessary check that was subsumed into canRealignStack.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108588 91177308-0d34-0410-b5e6-96231b3b80d8

Propagate alloca alignment information via variable size object frame
information.

No functional change yet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108583 91177308-0d34-0410-b5e6-96231b3b80d8

Make more explicit and add some currently disabled error messages for
stack realignment on ARM.

Also check for function attributes as we do on X86 as well as
make explicit that we're checking can as well as needs in this function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108582 91177308-0d34-0410-b5e6-96231b3b80d8

Make comment a bit more clear as well as return statement since
needsStackRealignment is currently checking the can conditions as well.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108581 91177308-0d34-0410-b5e6-96231b3b80d8

Update comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108571 91177308-0d34-0410-b5e6-96231b3b80d8

Add basic support to code-gen the ARM/Thumb2 bit-field insert (BFI) instruction
and a combine pattern to use it for setting a bit-field to a constant
value. More to come for non-constant stores.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108570 91177308-0d34-0410-b5e6-96231b3b80d8

Fix whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108569 91177308-0d34-0410-b5e6-96231b3b80d8

Consider this function:

  void foo() { __builtin_unreachable(); }

It will output the following on Darwin X86:

_func1:
Leh_func_begin0:
        pushq %rbp
Ltmp0:
        movq %rsp, %rbp
Ltmp1:
Leh_func_end0:

This prolog adds a new Call Frame Information (CFI) row to the FDE with an
address that is not within the address range of the code it describes -- part is
equal to the end of the function -- and therefore results in an invalid EH
frame. If we emit a nop in this situation, then the CFI row is now within the
address range.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108568 91177308-0d34-0410-b5e6-96231b3b80d8

Remove the isMoveInstr() hook.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108567 91177308-0d34-0410-b5e6-96231b3b80d8

Avoid isMoveInstr when printing XCore pseudo-moves.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108566 91177308-0d34-0410-b5e6-96231b3b80d8

Use MI.isCopy.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108565 91177308-0d34-0410-b5e6-96231b3b80d8

Use a small local function for a single remaining late isMoveInstr call in
Thumb2ITBlockPass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108564 91177308-0d34-0410-b5e6-96231b3b80d8

Rename DBG_LABEL PROLOG_LABEL, because it's only used during prolog emission and
thus is a much more meaningful name.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108563 91177308-0d34-0410-b5e6-96231b3b80d8

Keep valgrind quiet.

The isLive() method can read uninitialized memory, but it still gives correct
results.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108561 91177308-0d34-0410-b5e6-96231b3b80d8

tidy up

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108560 91177308-0d34-0410-b5e6-96231b3b80d8

Remove remaining calls to TII::isMoveInstr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108556 91177308-0d34-0410-b5e6-96231b3b80d8

Emit COPY instead of FMR/FMSD instructions for floating point conversion on
PowerPC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108555 91177308-0d34-0410-b5e6-96231b3b80d8

eliminate unlockedRefineAbstractTypeTo, types are all per-llvmcontext,
so there is no locking involved in type refinement.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108553 91177308-0d34-0410-b5e6-96231b3b80d8

get the first few tags from a precomputed table (count can be increased if desired)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108549 91177308-0d34-0410-b5e6-96231b3b80d8

Add missing attributes to cpp backend.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108547 91177308-0d34-0410-b5e6-96231b3b80d8

Accept registers with P modifier.  PR 5314.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108545 91177308-0d34-0410-b5e6-96231b3b80d8

Make llvm-bcanalyzer print out the full enum name for all metadata
code ids, not just some of them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108543 91177308-0d34-0410-b5e6-96231b3b80d8

Teach PPCInstrInfo::storeRegToStackSlot and loadRegFromStackSlot to add memory
operands.

Hopefully this fixes the llvm-gcc-powerpc-darwin9 buildbot. It really shouldn't
since missing memoperands should not affect correctness.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108540 91177308-0d34-0410-b5e6-96231b3b80d8

Reorder the contents of various getAnalysisUsage functions, eliminating
a redundant loopsimplify run from the default -O2 sequence.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108539 91177308-0d34-0410-b5e6-96231b3b80d8

Revert r108369, sorting llvm.dbg.declare information by source position,
since it doesn't work for front-ends which don't emit column information
(which includes llvm-gcc in its present configuration), and doesn't
work for clang for K&R style variables where the variables are declared
in a different order from the parameter list.

Instead, make a separate pass through the instructions to collect the
llvm.dbg.declare instructions in order. This ensures that the debug
information for variables is emitted in this order.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108538 91177308-0d34-0410-b5e6-96231b3b80d8

Remove the X86::FP_REG_KILL pseudo-instruction and the X86FloatingPointRegKill
pass that inserted it.

It is no longer necessary to limit the live ranges of FP registers to a single
basic block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108536 91177308-0d34-0410-b5e6-96231b3b80d8

Search for a free FP register instead of just assuming FP7 is not in use.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108535 91177308-0d34-0410-b5e6-96231b3b80d8

Remove the rest of my instcombine changes.  Back to the drawing board on this one.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108530 91177308-0d34-0410-b5e6-96231b3b80d8

Allow x87 FP registers to be alive globally in a function.

FP_REG_KILL instructions are still inserted, but can be disabled by passing
-live-x87 to llc. The X87FPRegKillInserterPass is going to be removed shortly.

CFG edges are partioned into bundles where the x87 stack must be allocated
identically. Code is insertad at the end of each basic block that shuffles the
live FP registers to match the outgoing bundles expectations.

This fix is in preparation for some upcoming register allocator improvements
that may extend the live range of registers beyond a basic block, similar to
LICM. It also provides a nice runtime speedup if you are building with
-mfpmath=387.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108529 91177308-0d34-0410-b5e6-96231b3b80d8

Remove extraneous semicolons after member functions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108525 91177308-0d34-0410-b5e6-96231b3b80d8

Feed the right output into FileCheck.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108523 91177308-0d34-0410-b5e6-96231b3b80d8

eliminate CallInst::ArgOffset

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108522 91177308-0d34-0410-b5e6-96231b3b80d8

Get rid of a bunch of duplicated ELF enum values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108520 91177308-0d34-0410-b5e6-96231b3b80d8

A few more minor additions to ELF.h.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108519 91177308-0d34-0410-b5e6-96231b3b80d8

Remove bogus link.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108518 91177308-0d34-0410-b5e6-96231b3b80d8

Arrays and vectors with different numbers of elements are not equivalent.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108517 91177308-0d34-0410-b5e6-96231b3b80d8

Remove unnecessary conditional.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108516 91177308-0d34-0410-b5e6-96231b3b80d8

LoopSimplify does not update domfrontier correctly.

This fixes PR7649.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108513 91177308-0d34-0410-b5e6-96231b3b80d8

Add dump() to DominanceFrontier

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108512 91177308-0d34-0410-b5e6-96231b3b80d8

Remove many calls to TII::isMoveInstr. Targets should be producing COPY anyway.

TII::isMoveInstr is going tobe completely removed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108507 91177308-0d34-0410-b5e6-96231b3b80d8

Add forgotten test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108506 91177308-0d34-0410-b5e6-96231b3b80d8

Use the source-order scheduler instead of the "fast" scheduler at -O0,
because it's more likely to keep debug line information in its original
order.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108496 91177308-0d34-0410-b5e6-96231b3b80d8

build/Darwin: Add an LLVM_LTO_VERSION_OFFSET make variable to allow offsetting
the libLTO library version from the actual build version.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108495 91177308-0d34-0410-b5e6-96231b3b80d8

Also revert 108422, it's causing some test failures.

Working on testcases for Owen.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108494 91177308-0d34-0410-b5e6-96231b3b80d8

build/Clang: Build and install libLTO as part of clang-only/install-clang targets.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108493 91177308-0d34-0410-b5e6-96231b3b80d8