TargetLowering.h #includes SelectionDAGNodes.h, so it doesn't need its
own OpActionsCapacity magic number; it can just use ISD::BUILTIN_OP_END,
as long as it takes care to round up when needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61733 91177308-0d34-0410-b5e6-96231b3b80d8

Delete an unused variable and simplify the code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61732 91177308-0d34-0410-b5e6-96231b3b80d8

s/ConstructType/ConstructTypeDIE/g

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61731 91177308-0d34-0410-b5e6-96231b3b80d8

make llvm-ld smart enough to link against native libraries that are
not in system library directories by checking -L paths as well.
Patch by Axel Naumann!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61730 91177308-0d34-0410-b5e6-96231b3b80d8

Construct stuct field DIEs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61729 91177308-0d34-0410-b5e6-96231b3b80d8

fix wordo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61728 91177308-0d34-0410-b5e6-96231b3b80d8

Remove redundant ValID::ValID:: scoping (doesn't compile on Windows).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61727 91177308-0d34-0410-b5e6-96231b3b80d8

Construct enumerator DIE using DebugInfo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61726 91177308-0d34-0410-b5e6-96231b3b80d8

Reject PR3281:accepted03.ll with:

llvm-as: accepted03.ll:1:35: invalid unresolved type up reference
declare void @r({ \7, opaque, \10 } %su)
                                  ^

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61725 91177308-0d34-0410-b5e6-96231b3b80d8

Construct array/vector type DIEs using DebugInfo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61724 91177308-0d34-0410-b5e6-96231b3b80d8

Get rid of sentinel insertion in interval reconstruction.  It just masked the
problem, rather than fixing it.  The problem has now been fixed the right way.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61723 91177308-0d34-0410-b5e6-96231b3b80d8

reject PR3281:crash11.ll with:
llvm-as: crash11.ll:2:27: function may not return return opaque type
  "xw" = tail call opaque @608(label %31)
                          ^

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61722 91177308-0d34-0410-b5e6-96231b3b80d8

reject PR3281:crash10.ll with:

llvm-as: crash10.ll:3:35: floating point constant does not have type 'ppc_fp128'
  "dumy" = fcmp ult ppc_fp128 "j",9209.4
                                  ^

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61721 91177308-0d34-0410-b5e6-96231b3b80d8

reject PR3281:crash09.ll with this diagnostic:

llvm-as: crash09.ll:3:1: self referential type is invalid
type %0
^

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61720 91177308-0d34-0410-b5e6-96231b3b80d8

allow opaque undefs.  This resolves PR3282 and fixes
test/Assembler/2005-05-05-OpaqueUndefValues.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61719 91177308-0d34-0410-b5e6-96231b3b80d8

Now, getTag() is used by DwarfWriter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61718 91177308-0d34-0410-b5e6-96231b3b80d8

Tidy up #includes, deleting a bunch of unnecessary #includes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61715 91177308-0d34-0410-b5e6-96231b3b80d8

Construct basic and derived type DIEs using DebugInfo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61714 91177308-0d34-0410-b5e6-96231b3b80d8

Handle iAny and fAny types in TreePatternNode::UpdateNodeType.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61713 91177308-0d34-0410-b5e6-96231b3b80d8

subsume ConstructPointerType()

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61711 91177308-0d34-0410-b5e6-96231b3b80d8

Add the keyword 'default'.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61710 91177308-0d34-0410-b5e6-96231b3b80d8

subsume ConstructBasicType().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61709 91177308-0d34-0410-b5e6-96231b3b80d8

Renamed Google Test license file from COPYING to LICENSE.TXT to match LLVM
conventions, per John Criswell.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61708 91177308-0d34-0410-b5e6-96231b3b80d8

squash warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61707 91177308-0d34-0410-b5e6-96231b3b80d8

A few more polygen grammar updates.
 - After GlobalAssign, emit addrspace before global/constant, to follow
   the new syntax.
 - Eliminate "type void", which is now invalid.
 - Fix invalid liblists like [, "foo"].
 - Tweak whitespace in a few places.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61706 91177308-0d34-0410-b5e6-96231b3b80d8

set standard ignores

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61703 91177308-0d34-0410-b5e6-96231b3b80d8

Fix spelling in some comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61702 91177308-0d34-0410-b5e6-96231b3b80d8

another fix to my previous commit:
* some picky <g> compilers get insulted by const-incorrectness
* respect 80-char limit

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61701 91177308-0d34-0410-b5e6-96231b3b80d8

Fix misplaced right parentheses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61699 91177308-0d34-0410-b5e6-96231b3b80d8

eliminate tabs from my previous commit

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61695 91177308-0d34-0410-b5e6-96231b3b80d8

Get rid of the tagging functions and use PointerIntPair.
This means that we have to include an additional header.

This patch should be functionally equivalent. I cannot outrule any performance
degradation, though I do not expect any.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61694 91177308-0d34-0410-b5e6-96231b3b80d8

Don't spew bitcode to standard out if this test
fails, like it is right now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61690 91177308-0d34-0410-b5e6-96231b3b80d8

This test passes again, unXFAIL.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61688 91177308-0d34-0410-b5e6-96231b3b80d8

Atom and Core i7 do not have same model number after all.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61686 91177308-0d34-0410-b5e6-96231b3b80d8

produce the same diagnostics for vicmp constant exprs as vicmp instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61685 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR3281:crash08.ll with this diagnostic:
llvm-as: crash08.ll:3:15: invalid operand type for instruction
  "qp" = sdiv fp128 0x1, %30
              ^

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61684 91177308-0d34-0410-b5e6-96231b3b80d8

reject PR3281:crash07.ll with:

llvm-as: crash07.ll:2:32: va_arg requires operand with first class type
  %y = va_arg [52 x <{}>] %43, double (...) sspreq
                               ^

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61683 91177308-0d34-0410-b5e6-96231b3b80d8

alignment of 0 is not valid.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61682 91177308-0d34-0410-b5e6-96231b3b80d8

reject undef/zero labels.  This fixes PR3281:crash0[56].ll with these
diagnostics:
llvm-as: crash05.ll:1:14: invalid type for null constant
global label zeroinitializer addrspace (75), section "c"
             ^
llvm-as: crash06.ll:2:14: invalid type for null constant
  udiv label zeroinitializer, @0
             ^

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61681 91177308-0d34-0410-b5e6-96231b3b80d8

add checking intentionally elided for vfcmp/vicmp since they should really
just be removed.  However, this fixes PR3281:crash04.ll, diagnosing it with:

lvm-as: crash04.ll:2:13: vfcmp requires vector floating point operands
  vfcmp uno double* undef, undef
            ^

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61680 91177308-0d34-0410-b5e6-96231b3b80d8

diagnose PR3281:crash02.ll with:
llvm-as: crash02.ll:1:62: invalid function return type
declare { <{ <{}>, void ([1898 x { void ()* }], opaque, ...) (), fp128 * }>, opaque } @t ()
                                                             ^

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61679 91177308-0d34-0410-b5e6-96231b3b80d8

reject PR3281:crash01.ll with:

llvm-as: crash01.ll:1:9: invalid function return type
declare opaque @t()
        ^

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61678 91177308-0d34-0410-b5e6-96231b3b80d8

tighten up return type check

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61677 91177308-0d34-0410-b5e6-96231b3b80d8

fix PR3281:accepted0[02].ll: represent empty arrays distinctly, and
diagnose attempts to initialize non-empty arrays with them.  This
produces:
llvm-as: accepted02.ll:1:28: invalid empty array initializer
@"o" = global [5 x double] []
                           ^
llvm-as: accepted00.ll:1:32: invalid empty array initializer
@"za" = thread_local global {} []
                               ^
[

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61676 91177308-0d34-0410-b5e6-96231b3b80d8

PR3281:crash00.ll: produce this diagnostic instead of crashing:

@t = global i8 0, align 3
                        ^

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61675 91177308-0d34-0410-b5e6-96231b3b80d8

Handle weak_extern in the JIT. This fixes
SingleSource/UnitTests/2007-04-25-weak.c in JIT mode. The test
now passes on systems which are able to produce a correct
reference output to compare with.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61674 91177308-0d34-0410-b5e6-96231b3b80d8

CellSPU:
- Teach SPU64InstrInfo.td about the remaining signed comparisons, update tests
  accordingly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61672 91177308-0d34-0410-b5e6-96231b3b80d8

gc is not an obsolete keyword.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61670 91177308-0d34-0410-b5e6-96231b3b80d8

Update polygen grammar for recent language changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61669 91177308-0d34-0410-b5e6-96231b3b80d8

CellSPU:
- Add an 8-bit operation test, which doesn't do much at this point.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61665 91177308-0d34-0410-b5e6-96231b3b80d8

CellSPU:
- Fix (brcond (setq ...)) bug, where BRNZ should have been used vice BRZ.
- Kill unused/unnecessary nodes in SPUNodes.td
- Beef out the i64operations.c test harness to use a lot of unaligned
  loads, test loops and LLVM loop/basic block optimizations; run the
  test harness successfully on real Cell hardware.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61664 91177308-0d34-0410-b5e6-96231b3b80d8

Move the libcall annotating part from doFinalization to doInitialization.
Finalization occurs after all the FunctionPasses in the group have run, which
is clearly not what we want.

This also means that we have to make sure that we apply the right param
attributes when creating a new function.

Also, add a missed optimization: strdup and strndup. NoCapture and
NoAlias return!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61658 91177308-0d34-0410-b5e6-96231b3b80d8

A few more whitespace tidyments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61655 91177308-0d34-0410-b5e6-96231b3b80d8

Tidy whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61653 91177308-0d34-0410-b5e6-96231b3b80d8

Regenerate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61649 91177308-0d34-0410-b5e6-96231b3b80d8

Modify the unittests Makefiles so that they don't rebuild parts of LLVM just to
run the tests. Most of this was stolen from the llvm/test Makefiles.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61648 91177308-0d34-0410-b5e6-96231b3b80d8

The .llx suffix is obsolete.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61647 91177308-0d34-0410-b5e6-96231b3b80d8

Update VIM LLVM IR syntax highlighting.
 - Add several new keywords
 - Clean up some obsolete keywords
 - Improve the patterns for constants.
 - Add syntax-highlighting for dejagnu test command comments

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61646 91177308-0d34-0410-b5e6-96231b3b80d8

Add a mechanism to specify attributes in getOrInsertFunction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61645 91177308-0d34-0410-b5e6-96231b3b80d8

Refactor some parser interfaces to fix PR3278 and a FIXME:
ParseAssemblyString with a specified module would not parse
into the module, it would create and return a new one.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61635 91177308-0d34-0410-b5e6-96231b3b80d8

Run a post-pass that marks known function declarations by name.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61632 91177308-0d34-0410-b5e6-96231b3b80d8

elf writer really wants the size of the global, not the size
of the pointer to the global.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61630 91177308-0d34-0410-b5e6-96231b3b80d8

Set a few more vimrc indentation options.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61628 91177308-0d34-0410-b5e6-96231b3b80d8

Add utility functions for marking parameters as noalias or nocapture.

Clean up some of the existing code by making it use hasFnAttr/addFnAttr
and round it off by creating removeFnAttr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61627 91177308-0d34-0410-b5e6-96231b3b80d8

XFAIL this test. The xform was removed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61624 91177308-0d34-0410-b5e6-96231b3b80d8

Revert this transform. It was causing some dramatic slowdowns in a few tests. See PR3266.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61623 91177308-0d34-0410-b5e6-96231b3b80d8

Add several more unimplemented operator overloads to ilist_iterator
to help catch errors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61622 91177308-0d34-0410-b5e6-96231b3b80d8

The llvm::ELFWriter::EmitGlobal() method is calling the
llvm::PATypeHolder::get() method when LLVM is self-hosted in Release
mode. Before the parser changed, there was a definition of llvm::PAHolder::get()
in llvmAsmParser.y. This was probably a bug that no-one noticed.

Explicitly #include the Type.h file as a temporary fix for now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61620 91177308-0d34-0410-b5e6-96231b3b80d8

add #include guards, thanks Dan.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61619 91177308-0d34-0410-b5e6-96231b3b80d8

Use softtabstop instead of redefining tabstop.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61618 91177308-0d34-0410-b5e6-96231b3b80d8

Switch the vimrc file from smartindent to cindent, which is
smarter about C-ish syntax, and supports the cinoptions
variable. Set cinoptions to suppress the extra indentation
for switch case labels.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61617 91177308-0d34-0410-b5e6-96231b3b80d8

Revert r61598 as it does nothing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61614 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a DAGCombiner abort on an invalid shift count constant. This fixes PR3250.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61613 91177308-0d34-0410-b5e6-96231b3b80d8

CommuteNodesToReducePressure() is now removed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61612 91177308-0d34-0410-b5e6-96231b3b80d8

Remove the code from the scheduler that commuted two-address
instructions to avoid copies, because TwoAddressInstructionPass
also does this optimization.  The scheduler's version didn't
account for live-out values, which resulted in spurious commutes
and missed opportunities.

Now, TwoAddressInstructionPass handles all the opportunities,
instead of just those that the scheduler missed. The result is
usually the same, though there are occasional trivial differences
resulting from the avoidance of spurious commutes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61611 91177308-0d34-0410-b5e6-96231b3b80d8

Any void readonly functions are provably dead, don't waste time adding
nocapture attributes to them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61610 91177308-0d34-0410-b5e6-96231b3b80d8

improve test and address Misha's comments

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61609 91177308-0d34-0410-b5e6-96231b3b80d8

Add Intel processors core i7 and atom.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61603 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR3210: Detect more Intel processors. Patch by Torok Edwin.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61602 91177308-0d34-0410-b5e6-96231b3b80d8

* Wrap command line flag in <tt>
* Wrapped long lines in code section

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61601 91177308-0d34-0410-b5e6-96231b3b80d8

We know it's always a SCEVConstant if it gets here, so just cast it and
inline the only use of isNegative. Fixes warning reported by Mike Stump.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61600 91177308-0d34-0410-b5e6-96231b3b80d8

Setting BUILD_ARCHIVE to 0 has the same effect as defining it to 1.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61599 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure that 'ranlib' runs only after 'ar' is completed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61598 91177308-0d34-0410-b5e6-96231b3b80d8

CellSPU:
- Remove custom lowering for BRCOND
- Add remaining functionality for branches in SPUInstrInfo, such as branch
  condition reversal and load/store folding. Updated BrCond test to reflect
  branch reversal.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61597 91177308-0d34-0410-b5e6-96231b3b80d8

Reassign the buffer to the pointer so that we don't overwrite memory.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61596 91177308-0d34-0410-b5e6-96231b3b80d8

Alphabetized #includes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61595 91177308-0d34-0410-b5e6-96231b3b80d8

Down with trailing whitespace!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61594 91177308-0d34-0410-b5e6-96231b3b80d8

VerifyLineLength() actually takes a max length parameter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61593 91177308-0d34-0410-b5e6-96231b3b80d8

Added some basic lint tools for C++ and generic lint tool applicable to all
types of files (TableGen, LLVM assembly, HTML files, etc.)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61592 91177308-0d34-0410-b5e6-96231b3b80d8

- Make copyRegToReg use the "LR" assembler synonym for "OR". Makes finding
  register copies a little easier to pick out from the output.
- Fix bug 3192.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61591 91177308-0d34-0410-b5e6-96231b3b80d8

* Alphabetized system headers per the style guide
* Minor spacing and comment cleanups

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61590 91177308-0d34-0410-b5e6-96231b3b80d8

Don't try to analyze this "backward" case. This is overly conservative
pending a correct solution.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61589 91177308-0d34-0410-b5e6-96231b3b80d8

So *this* is where all the trailing whitespace in file header comments come
from: copy-pasted straight from the coding standards doc!

Oh, the irony.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61586 91177308-0d34-0410-b5e6-96231b3b80d8

Remove comma at end of enumerator list.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61585 91177308-0d34-0410-b5e6-96231b3b80d8

Remove bison specific Makefile bits for AsmParser.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61584 91177308-0d34-0410-b5e6-96231b3b80d8

Deleted trailing whitespace; no functional changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61583 91177308-0d34-0410-b5e6-96231b3b80d8

vimrc
* Fixed cursors in terminal by setting nocompatible (sorry, vi users)
* Enable syntax highlighting so that this file can stand on its own
* Highlight trailing whitespace
* Fixed commands to delete trailing whitespaces and convert tabs to spaces

llvm.vim and tablegen.vim
* Removed trailing whitespace, as it's now very visible

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61582 91177308-0d34-0410-b5e6-96231b3b80d8

We also removed gtest-all.cc from the distribution tarball.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61581 91177308-0d34-0410-b5e6-96231b3b80d8

Load tracking means that the value analyzed may
not have pointer type.  In particular, it may
be the condition argument for a select or a GEP
index.  While I was unable to construct a testcase
for which some bits of the original pointer are
captured due to one of these, it's very very close
to being possible - so play safe and exclude these
possibilities.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61580 91177308-0d34-0410-b5e6-96231b3b80d8

fist short at a new unit test for ImmutableSets. no bugs found, though :P

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61576 91177308-0d34-0410-b5e6-96231b3b80d8