fix ShrinkDemandedOps to not leave dead nodes around,
fixing PR6607

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98512 91177308-0d34-0410-b5e6-96231b3b80d8

rewrite ShrinkDemandedOps to be faster and indent less,
no functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98511 91177308-0d34-0410-b5e6-96231b3b80d8

Fix jit encoding bugs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98510 91177308-0d34-0410-b5e6-96231b3b80d8

make -view-isel-dags print after the 'ShrinkDemandedOps' pass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98509 91177308-0d34-0410-b5e6-96231b3b80d8

don't have i386-specific tests in CodeGen/Generic, PR6601.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98508 91177308-0d34-0410-b5e6-96231b3b80d8

fix PR6605, X86ISD::CMP always returns i32 (EFLAGS), not
the operand type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98507 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98506 91177308-0d34-0410-b5e6-96231b3b80d8

Document fp16 intrinsics

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98505 91177308-0d34-0410-b5e6-96231b3b80d8

Feature test for half precision FP.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98504 91177308-0d34-0410-b5e6-96231b3b80d8

Add substarget feature for FP16

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98503 91177308-0d34-0410-b5e6-96231b3b80d8

Add codegen support for FP16 on ARM

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98502 91177308-0d34-0410-b5e6-96231b3b80d8

Make default expansion for FP16 <-> FP32 nodes into libcalls

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98501 91177308-0d34-0410-b5e6-96231b3b80d8

Add DAG nodes to represent FP16 <-> FP32 intrinsics

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98500 91177308-0d34-0410-b5e6-96231b3b80d8

Cleanup

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98499 91177308-0d34-0410-b5e6-96231b3b80d8

The fp16 <-> fp32 intrinsics are pure, mark them so they can be CSE'd, etc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98498 91177308-0d34-0410-b5e6-96231b3b80d8

Add intrinsics to represent fp16 <-> fp32 conversions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98497 91177308-0d34-0410-b5e6-96231b3b80d8

add support for pentium class CPUs which do not have cmov,
PR4841.  Patch by Craig Smith!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98496 91177308-0d34-0410-b5e6-96231b3b80d8

fix AsmPrinter::GetBlockAddressSymbol to always return a unique
label instead of trying to form one based on the BB name (which
causes collisions if the name is empty).  This fixes PR6608

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98495 91177308-0d34-0410-b5e6-96231b3b80d8

comment fix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98494 91177308-0d34-0410-b5e6-96231b3b80d8

shrink 4-byte branches to 1-byte branches when lowering from
MachineInstr -> MCInst.  This is what the assembler backend wants,
it relaxes from smaller to larger things.  This fixes rdar://7750815

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98493 91177308-0d34-0410-b5e6-96231b3b80d8

Skip over debug info when trying to merge two return BBs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98491 91177308-0d34-0410-b5e6-96231b3b80d8

Make returns more consistent with others.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98490 91177308-0d34-0410-b5e6-96231b3b80d8

get MMI out of the label uniquing business, just go to MCContext
to get unique assembler temporary labels.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98489 91177308-0d34-0410-b5e6-96231b3b80d8

fix these two get the mcsymbol operand instead of imm operand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98487 91177308-0d34-0410-b5e6-96231b3b80d8

add a new CreateTempSymbol method, the use case for
CreateTempSymbol vs GetOrCreateTemporarySymbol are
completely different.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98486 91177308-0d34-0410-b5e6-96231b3b80d8

don't use getDWLabel("label" anymore, always go through MMI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98485 91177308-0d34-0410-b5e6-96231b3b80d8

remove now-dead code, all labels use MCSymbols.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98484 91177308-0d34-0410-b5e6-96231b3b80d8

change SrcLineInfo to contain a label instead of a label ID.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98483 91177308-0d34-0410-b5e6-96231b3b80d8

Now that DBG_LABEL is updated, we can finally make MachineMove
contain an MCSymbol instead of a label index.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98482 91177308-0d34-0410-b5e6-96231b3b80d8

change the DBG_LABEL MachineInstr to always be created
with an MCSymbol instead of an immediate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98481 91177308-0d34-0410-b5e6-96231b3b80d8

xfail properly

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98479 91177308-0d34-0410-b5e6-96231b3b80d8

unbreak the build, grr symlinks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98477 91177308-0d34-0410-b5e6-96231b3b80d8

xfail these tests temporarily to get teh buildbots back to happy land.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98476 91177308-0d34-0410-b5e6-96231b3b80d8

Change this code to allocate temporary labels from mccontext,
not from MMI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98475 91177308-0d34-0410-b5e6-96231b3b80d8

switch GC_LABEL to use an MCSymbol operand instead of a label ID operand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98474 91177308-0d34-0410-b5e6-96231b3b80d8

Fix some EH failures on NNT I introduced in r98461

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98471 91177308-0d34-0410-b5e6-96231b3b80d8

fix a bug I introduced in r98459, causing some NNT failures.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98470 91177308-0d34-0410-b5e6-96231b3b80d8

Check in tablegen changes to fix disassembler related failures caused by r98465.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98468 91177308-0d34-0410-b5e6-96231b3b80d8

Do not force indirect tailcall through fixed registers: eax, r11. Add support to allow loads to be folded to tail call instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98465 91177308-0d34-0410-b5e6-96231b3b80d8

MC: Fix a crash on invalid, attempting to evaluate undefined symbols.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98464 91177308-0d34-0410-b5e6-96231b3b80d8

change the LabelSDNode to be EHLabelSDNode and make it hold
an MCSymbol.  Make the EH_LABEL MachineInstr hold its label
with an MCSymbol instead of ID.  Fix a bug in MMI.cpp which
would return labels named "Label4" instead of "label4".

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98463 91177308-0d34-0410-b5e6-96231b3b80d8

eliminate InvalidateLabel and LabelIDList from MMI and replace
them with a counter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98462 91177308-0d34-0410-b5e6-96231b3b80d8

use Label->isDefined() instead of isLabelDeleted() now that we
consistently use MCSymbol and only call this predicate after
they should have been emitted.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98461 91177308-0d34-0410-b5e6-96231b3b80d8

fix some pointless layering violations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98460 91177308-0d34-0410-b5e6-96231b3b80d8

change EH related stuff (other than EH_LABEL) to use MCSymbol
instead of label ID's.  This cleans up and regularizes a bunch
of code and makes way for future progress.

Unfortunately, this pointed out to me that JITDwarfEmitter.cpp
is largely copy and paste from DwarfException/MachineModuleInfo
and other places.  This is very sad and disturbing. :(

One major change here is that TidyLandingPads moved from being
called in DwarfException::BeginFunction to being called in
DwarfException::EndFunction.  There should not be any
functionality change from doing this, but I'm not an EH expert.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98459 91177308-0d34-0410-b5e6-96231b3b80d8

X86_64: Fix encoding for the rest of the 64i32 instructions too.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98458 91177308-0d34-0410-b5e6-96231b3b80d8

X86: Fix ADD64i32 encoding.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98457 91177308-0d34-0410-b5e6-96231b3b80d8

MC/X86_64: Symbol support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98456 91177308-0d34-0410-b5e6-96231b3b80d8

MC/Mach-O: Initial x86_64 support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98454 91177308-0d34-0410-b5e6-96231b3b80d8

macho-dump: Basic Mach 64 support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98453 91177308-0d34-0410-b5e6-96231b3b80d8

eliminate the now-unneeded context argument of MBB::getSymbol()

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98451 91177308-0d34-0410-b5e6-96231b3b80d8

rearrange MCContext ownership.  Before LLVMTargetMachine created it
and passing off ownership to AsmPrinter.  Now MachineModuleInfo
creates it and owns it by value.  This allows us to use MCSymbols
more consistently throughout the rest of the code generator, and
simplifies a bit of code.  This also allows MachineFunction to
keep an MCContext reference handy, and cleans up the TargetRegistry
interfaces for AsmPrinters.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98450 91177308-0d34-0410-b5e6-96231b3b80d8

Make lit pay attention to --vg for unittests too.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98449 91177308-0d34-0410-b5e6-96231b3b80d8

Allow types that have been forwarded to to be freed.

Tested: make check-lit && valgrind --dsymutil=yes --leak-check=full unittests/ExecutionEngine/JIT/Debug/JITTests

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98447 91177308-0d34-0410-b5e6-96231b3b80d8

Teach this test not to leak. Also, clean up all the cast<BinaryOperator> cruft.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98446 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mc: Delete output files on error.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98445 91177308-0d34-0410-b5e6-96231b3b80d8

MC/X86_64: Fix matching of leaq.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98444 91177308-0d34-0410-b5e6-96231b3b80d8

MC/X86_64: Fix matching of callq.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98443 91177308-0d34-0410-b5e6-96231b3b80d8

add a hack to allow parsing negative minint. rdar://7751341

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98442 91177308-0d34-0410-b5e6-96231b3b80d8

add builder support for mcsymbol operands.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98434 91177308-0d34-0410-b5e6-96231b3b80d8

add support for MCSymbols as operands to MachineInstrs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98433 91177308-0d34-0410-b5e6-96231b3b80d8

simplify EmitFrameMoves to take BaseLabel in as a symbol
instead of as a stem+idx pair, simplify the "is a new
location" check to use symbol comparison.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98432 91177308-0d34-0410-b5e6-96231b3b80d8

simplify some overly general code.  The stack always grows down on x86.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98431 91177308-0d34-0410-b5e6-96231b3b80d8

Fix another warning. There is a functionality change but I believe it's correct.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98430 91177308-0d34-0410-b5e6-96231b3b80d8

factor some labels, simplify some code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98429 91177308-0d34-0410-b5e6-96231b3b80d8

Add some parens and silence a warning.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98428 91177308-0d34-0410-b5e6-96231b3b80d8

Attempt to appease the arm-linux buildbot by fixing the JIT encodings for new
base register updating load/store-multiple instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98427 91177308-0d34-0410-b5e6-96231b3b80d8

various cleanups.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98426 91177308-0d34-0410-b5e6-96231b3b80d8

MC/Mach-O: PCrel relocations weren't using the right base address, they are
relative to the fragment address, not its offset. This was masked by the text
section normally being at address 0.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98420 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mc: Support -n, useful for comparing -integrated-as output since the
compiler may not lead with the text section.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98418 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mc: Support -arch as a simplified form of -triple.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98417 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a typo in ValueTracking that's causing instcombine to delete needed shift instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98416 91177308-0d34-0410-b5e6-96231b3b80d8

reimplement the string pool used for inlined function
entries to not thrash std::strings and MCSymbols.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98415 91177308-0d34-0410-b5e6-96231b3b80d8

Remove the last memory leak from the VMCore unit tests.

Tested: valgrind --leak-check=full unittests/VMCore/Debug/VMCoreTests

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98414 91177308-0d34-0410-b5e6-96231b3b80d8

switch to the text section at the start of the .s file for darwin/x86
targets.  This is a temporary hack for the .o file writer that Daniel
wants :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98413 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a memory leak from MetadataTest.

Tested: valgrind --leak-check=full unittests/VMCore/Debug/VMCoreTests

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98412 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a memory leak from VerifierTest.

Tested: valgrind --leak-check=full unittests/VMCore/Debug/VMCoreTests

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98411 91177308-0d34-0410-b5e6-96231b3b80d8

Delete MDNodes when LLVMContext is destroyed.  Previous attempts: r97918, r97788.

Tested: clang debug bootstrap, llvm-gcc bootstrap, `make check-lit`
after configuring with --with-llvmgccdir (and this did run the
FrontendC* tests this time)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98410 91177308-0d34-0410-b5e6-96231b3b80d8

Change ARM ld/st multiple instructions to have variant instructions for
writebacks to the address register.  This gets rid of the hack that the
first register on the list was the magic writeback register operand.  There
was an implicit constraint that if that operand was not reg0 it had to match
the base register operand.  The post-RA scheduler's antidependency breaker
did not understand that constraint and sometimes changed one without the
other.  This also fixes Radar 7495976 and should help the verifier work
better for ARM code.

There are now new ld/st instructions explicit writeback operands and explicit
constraints that tie those registers together.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98409 91177308-0d34-0410-b5e6-96231b3b80d8

Do not  ignore arg_size() impact while counting bb instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98408 91177308-0d34-0410-b5e6-96231b3b80d8

MC/X86: Add temporary hack to match shrl $1,%eax correctly, to support testing
other functionality on 403.gcc compiled at -O0.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98405 91177308-0d34-0410-b5e6-96231b3b80d8

MC/X86: Add an XFAIL test where we aren't matching the correct instruction
because we don't understand how the specific instruction is doing sign
extension.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98404 91177308-0d34-0410-b5e6-96231b3b80d8

Remove extra parameter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98403 91177308-0d34-0410-b5e6-96231b3b80d8

Combine the code to build VLDM and VSTM instructions, since they are
mostly the same.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98402 91177308-0d34-0410-b5e6-96231b3b80d8

Do not overestimate code size reduction in presense of debug info.
Use CodeMetrics.analyzeBasicBlock() to estimate BB size.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98401 91177308-0d34-0410-b5e6-96231b3b80d8

Tidy up.  No functional changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98398 91177308-0d34-0410-b5e6-96231b3b80d8

MC/Mach-O: Implement initial support for relaxation.
 - The implementation is currently very brain dead and inefficient, but I have a
   clear plan on how to fix it.

 - The good news is, it works and correctly assembles 403.gcc (when built with
   Clang, at '-Os', '-Os -g', and '-O3'). Even better, at '-Os' and '-Os -g',
   the resulting binary is exactly equivalent to that when built with the system
   assembler. So it probably works! :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98396 91177308-0d34-0410-b5e6-96231b3b80d8

Remove obsolete comments.  VLDM is implemented in ARMInstrVFP.td.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98395 91177308-0d34-0410-b5e6-96231b3b80d8

Fix LLVM build when the user specifies CPPFLAGS on the make command line.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98394 91177308-0d34-0410-b5e6-96231b3b80d8

remove gone method, grr symlinks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98392 91177308-0d34-0410-b5e6-96231b3b80d8

remove special case code that isn't needed anymore.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98391 91177308-0d34-0410-b5e6-96231b3b80d8

inline GetGlobalValueSymbol into the rest its callers and
remove it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98390 91177308-0d34-0410-b5e6-96231b3b80d8

inline the now-trivial implementation of GetGlobalValueSymbol into
some of its callers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98388 91177308-0d34-0410-b5e6-96231b3b80d8

eliminate the X86 version of GetGlobalValueSymbol, allowing
it to be non-virtual and soon disappear.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98387 91177308-0d34-0410-b5e6-96231b3b80d8

prune #includes, this file should be removed pending hte cygwin stub issue being resolved.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98386 91177308-0d34-0410-b5e6-96231b3b80d8

move fastcall/stdcall mangling up into Mangler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98384 91177308-0d34-0410-b5e6-96231b3b80d8

MC: Factor out MCAssembler::EvaluateFixup, and simplify.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98381 91177308-0d34-0410-b5e6-96231b3b80d8

MC: Constify MCAsmLayout argument to MCExpr::EvaluteAs...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98380 91177308-0d34-0410-b5e6-96231b3b80d8

MC: Add MCAssembler::addFixup, which enforces that fixups are added in order.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98379 91177308-0d34-0410-b5e6-96231b3b80d8

give Mangler access to TargetData.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98378 91177308-0d34-0410-b5e6-96231b3b80d8