Add register mask support to RAGreedy.

This only adds the interference checks required for correctness.
We still need to take advantage of register masks for the
interference driven live range splitting.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150191 91177308-0d34-0410-b5e6-96231b3b80d8

Now subprogram descriptors are not collected by llvm.dbg.sp NamedMDNode. Update document to reflect this change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150187 91177308-0d34-0410-b5e6-96231b3b80d8

Tweak comment readability and grammar.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150183 91177308-0d34-0410-b5e6-96231b3b80d8

Test for commit access.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150178 91177308-0d34-0410-b5e6-96231b3b80d8

GlobalOpt: Be more aggressive about elminating side-effect free static dtors.

GlobalOpt runs early in the pipeline (before inlining) and complex class
hierarchies often introduce bitcasts or GEPs which weren't optimized away.
Teach it to ignore side-effect free instructions instead of depending on
other passes to remove them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150174 91177308-0d34-0410-b5e6-96231b3b80d8

Store just the SimpleValueType in the generated VT tables for each register class, eliminating static ctors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150173 91177308-0d34-0410-b5e6-96231b3b80d8

Move the Name field in MCInstrDesc to the end, saving 8 bytes of padding per entry on x86_64.

No change on i386.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150170 91177308-0d34-0410-b5e6-96231b3b80d8

Teach the MC and disassembler about SoftFail, and hook it up to UNPREDICTABLE on ARM. Wire this to tBLX in order to provide test coverage.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150169 91177308-0d34-0410-b5e6-96231b3b80d8

More tweaks to get the size of the X86 disassembler tables down.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150167 91177308-0d34-0410-b5e6-96231b3b80d8

Flatten some of the arrays in the X86 disassembler tables to reduce space needed to store pointers on 64-bit hosts and reduce relocations needed at startup. Part of PR11953.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150161 91177308-0d34-0410-b5e6-96231b3b80d8

Preserve physreg kills in MachineBasicBlock::SplitCriticalEdge.

Failure to preserve kills was causing LiveIntervals to miss some EFLAGS live
ranges. Unfortunately I've been unable to reduce a good test case yet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150152 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/X86/atom-lea-sp.ll: Add explicit -mtriple=i686-linux.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150151 91177308-0d34-0410-b5e6-96231b3b80d8

Fix kill flags when moving instructions using LiveIntervals::moveInstr(...).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150150 91177308-0d34-0410-b5e6-96231b3b80d8

Remove assertion. Not all use operands are reads.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150149 91177308-0d34-0410-b5e6-96231b3b80d8

Improve TargetPassConfig. No intended functionality.

Split CodeGen into stages.
Distinguish between optimization and correctness.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150122 91177308-0d34-0410-b5e6-96231b3b80d8

comment

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150121 91177308-0d34-0410-b5e6-96231b3b80d8

Remove static initializer from DataStream.cpp

If someone would prefer a clear name for the 'success' error_value we could
come up with one - potentially just a 'named constructor' style
'error_value::success()' to make this expression more self-documenting. If
I see this come up in other cases I'll certainly consider it.

One step along the way to resolving PR11944.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150120 91177308-0d34-0410-b5e6-96231b3b80d8

Erase dead copies that are clobbered by a call.

This does make a difference, at least when using RABasic.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150118 91177308-0d34-0410-b5e6-96231b3b80d8

Handle register masks when searching for EFLAGS clobbers.

Calls clobber the flags, but when using register masks there is no
EFLAGS<imp-def> operand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150117 91177308-0d34-0410-b5e6-96231b3b80d8

Never delete instructions that define reserved registers.

I think this was already the intention, but DeadMachineInstructionElim
was accidentally tracking the liveness of reserved registers. Now,
instructions with reserved defs are never deleted.

This prevents the call stack adjustment instructions from getting
deleted when enabling register masks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150116 91177308-0d34-0410-b5e6-96231b3b80d8

Handle register masks in MachineCopyPropagation.

For simplicity, treat calls with register masks as basic block
boundaries.  This means we can't copy propagate callee-saved registers
across calls, but I don't think that is a big deal.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150108 91177308-0d34-0410-b5e6-96231b3b80d8

Commit Andy Zhang's test for the lea patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150107 91177308-0d34-0410-b5e6-96231b3b80d8

fix broken link

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150105 91177308-0d34-0410-b5e6-96231b3b80d8

[asan] unpoison the stack before every noreturn call. Fixes asan issue 37. llvm part

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150102 91177308-0d34-0410-b5e6-96231b3b80d8

Codegen pass definition cleanup. No functionality.

Moving toward a uniform style of pass definition to allow easier target configuration.
Globally declare Pass ID.
Globally declare pass initializer.
Use INITIALIZE_PASS consistently.
Add a call to the initializer from CodeGen.cpp.
Remove redundant "createPass" functions and "getPassName" methods.

While cleaning up declarations, cleaned up comments (sorry for large diff).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150100 91177308-0d34-0410-b5e6-96231b3b80d8

Move pass configuration out of pass constructors: MachineLICM.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150099 91177308-0d34-0410-b5e6-96231b3b80d8

whitespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150098 91177308-0d34-0410-b5e6-96231b3b80d8

Move pass configuration out of pass constructors: StackSlotColoring.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150097 91177308-0d34-0410-b5e6-96231b3b80d8

Move pass configuration out of pass constructors: PostRAScheduler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150096 91177308-0d34-0410-b5e6-96231b3b80d8

Move pass configuration out of pass constructors: BranchFolderPass

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150095 91177308-0d34-0410-b5e6-96231b3b80d8

whitespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150094 91177308-0d34-0410-b5e6-96231b3b80d8

Added TargetPassConfig::setOpt

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150093 91177308-0d34-0410-b5e6-96231b3b80d8

Added Pass::createPass(ID) to handle pass configuration by ID

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150092 91177308-0d34-0410-b5e6-96231b3b80d8

Move pass configuration out of pass constructors: TailDuplicate::PreRegAlloc

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150091 91177308-0d34-0410-b5e6-96231b3b80d8

Add Register mask support to RABasic.

When a virtual register is live across a call, limit the search space to
call-preserved registers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150081 91177308-0d34-0410-b5e6-96231b3b80d8

Don't map registers to the invalid dwarf register (-1). It's the default value.

 X86GenRegisterInfo.inc | 1032 -------------------------------------------------
  1 file changed, 1032 deletions(-)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150080 91177308-0d34-0410-b5e6-96231b3b80d8

Use TSFlag bit to describe instruction properties.

Creating the isPredicated TSFlag enables the code
to use the property defined in the instruction format
instead of using a large switch statement.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150078 91177308-0d34-0410-b5e6-96231b3b80d8

Keep track of register masks in LiveIntervalAnalysis.

Build an ordered vector of register mask operands (i.e., calls) when
computing live intervals. Provide a checkRegMaskInterference() function
that computes a bit mask of usable registers for a live range.

This is a quick way of determining of a live range crosses any calls,
and restricting it to the callee saved registers if it does.
Previously, we had to discover call clobbers for each candidate register
independently.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150077 91177308-0d34-0410-b5e6-96231b3b80d8

Value initialize MCRegisterClasses. Not sure how could miss this during the MCTargetDesc refactor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150076 91177308-0d34-0410-b5e6-96231b3b80d8

Use Use::set rather than finding the operand number of the use
and setting that.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150074 91177308-0d34-0410-b5e6-96231b3b80d8

PathV2: Remove static StringRef ctors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150071 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed a bug in printing "cmp" pseudo ops.
> This IR code
> %res = call <8 x float> @llvm.x86.avx.cmp.ps.256(<8 x float> %a0, <8 x float> %a1, i8 14)
> fails with assertion:
>
> llc: X86ATTInstPrinter.cpp:62: void llvm::X86ATTInstPrinter::printSSECC(const llvm::MCInst*, unsigned int, llvm::raw_ostream&): Assertion `0 && "Invalid ssecc argument!"' failed.
> 0  llc             0x0000000001355803
> 1  llc             0x0000000001355dc9
> 2  libpthread.so.0 0x00007f79a30575d0
> 3  libc.so.6       0x00007f79a23a1945 gsignal + 53
> 4  libc.so.6       0x00007f79a23a2f21 abort + 385
> 5  libc.so.6       0x00007f79a239a810 __assert_fail + 240
> 6  llc             0x00000000011858d5 llvm::X86ATTInstPrinter::printSSECC(llvm::MCInst const*, unsigned int, llvm::raw_ostream&) + 119

I added the full testing for all possible pseudo-ops of cmp.
I extended X86AsmPrinter.cpp and X86IntelInstPrinter.cpp.

You'l also see lines alignments (unrelated to this fix) in X86IselLowering.cpp from my previous check-in.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150068 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a couple unneeded intrinsic patterns

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150067 91177308-0d34-0410-b5e6-96231b3b80d8

No actual functional change here, just some clarifications:

Clarify that contributors are agreeing to license their code under the
license corresponding to the subproject that they are contributing to,
as requested by a potential contributor.

Also, as a drive-by, update the llvm-gcc/GPL section to mention dragonegg
and say that GPL code is all in its own repo's.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150065 91177308-0d34-0410-b5e6-96231b3b80d8

Remove GCC builtins for vpermilp* intrinsics as clang no longer needs them. Custom lower the intrinsics to the vpermilp target specific node and remove intrinsic patterns.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150060 91177308-0d34-0410-b5e6-96231b3b80d8

[fast-isel] Add support for SUBs with non-legal types.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150047 91177308-0d34-0410-b5e6-96231b3b80d8

Add comment to test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150046 91177308-0d34-0410-b5e6-96231b3b80d8

[fast-isel] Add support for ORs with non-legal types.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150045 91177308-0d34-0410-b5e6-96231b3b80d8

Added MachineInstr::isBundled() to check if an instruction is part of a bundle.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150044 91177308-0d34-0410-b5e6-96231b3b80d8

misched: bug in debug output.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150043 91177308-0d34-0410-b5e6-96231b3b80d8

whitespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150042 91177308-0d34-0410-b5e6-96231b3b80d8

stale comment

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150041 91177308-0d34-0410-b5e6-96231b3b80d8

add an explicit section on static constructors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150037 91177308-0d34-0410-b5e6-96231b3b80d8

Don't use static CTORs for the Attributes constants, while still keeping the class type-safe

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150031 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for a temporary forward decl type. We want this so we
can rauw forward declarations if we decide to emit the full type.

Part of rdar://10809898

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150024 91177308-0d34-0410-b5e6-96231b3b80d8

Remove tabs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150022 91177308-0d34-0410-b5e6-96231b3b80d8

[fast-isel] Add support for indirect branches.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150014 91177308-0d34-0410-b5e6-96231b3b80d8

Remove tabs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150012 91177308-0d34-0410-b5e6-96231b3b80d8

Use LEA to adjust stack ptr for Atom. Patch by Andy Zhang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150008 91177308-0d34-0410-b5e6-96231b3b80d8

Allow bugpoint to recognize -bb-vectorize

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150003 91177308-0d34-0410-b5e6-96231b3b80d8

Correct use of const in ParseCommandLineOptions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149999 91177308-0d34-0410-b5e6-96231b3b80d8

ocaml bindings: landing pad is now the last opcode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149997 91177308-0d34-0410-b5e6-96231b3b80d8

Add a unittest for rotating a really big APInt.

Clang miscompiles it under certain circumstances, and it's a good exercise for APInt.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149986 91177308-0d34-0410-b5e6-96231b3b80d8

Bitcode/BitstreamReader.h: Tweak for big endian hosts.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149980 91177308-0d34-0410-b5e6-96231b3b80d8

Rephrase to add clarity.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149972 91177308-0d34-0410-b5e6-96231b3b80d8

test commit

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149971 91177308-0d34-0410-b5e6-96231b3b80d8

Do not fold ADD / SUB into load / store (to form pre-indexed, post-indexed
load / store) if the ADD / SUB has a live definition of CPSR.

Bug reported by David Meyer. Alas, no test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149970 91177308-0d34-0410-b5e6-96231b3b80d8

Add instruction selection for 256-bit VPSHUFD and 128-bit VPERMILPS/VPERMILPD.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149968 91177308-0d34-0410-b5e6-96231b3b80d8

Convert assert(0) to llvm_unreachable

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149967 91177308-0d34-0410-b5e6-96231b3b80d8

Convert assert(0) to llvm_unreachable

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149961 91177308-0d34-0410-b5e6-96231b3b80d8

Cache the sizes of vectors instead of calculating them all over the place.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149954 91177308-0d34-0410-b5e6-96231b3b80d8

Reserve space in these vectors to prevent having to grow the array too
much. This gets us an addition 0.9% on 445.gobmk.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149952 91177308-0d34-0410-b5e6-96231b3b80d8

Fix win32 build breakage from bitcode streaming patch

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149941 91177308-0d34-0410-b5e6-96231b3b80d8

[fast-isel] Add support for ADDs with non-legal types.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149934 91177308-0d34-0410-b5e6-96231b3b80d8

This is a small patch with a couple of improvements for running lit with --debug:

1. Added a status note when a config file is loaded directly with load_config. This helps notice loads of lit.cfg from lit.site.cfg
2. Added a status note on the result of a config load. Previously, it was just notifying that it tries to load a config file. Now it will also say whether the load succeeded or the file wasn't found

The two changes give better visibility into which config files were actually loaded by lit. The effect is only on --debug runs.

Patch by Eli Bendersky!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149932 91177308-0d34-0410-b5e6-96231b3b80d8

Expose TargetPassConfig to PEI Pass

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149927 91177308-0d34-0410-b5e6-96231b3b80d8

Add TargetPassConfig to the PassManager for use inside passes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149926 91177308-0d34-0410-b5e6-96231b3b80d8

The patch resolves the conflict between AddressSanitizer and load widening (GVN).
The problem initially reported by Mozilla folks (http://code.google.com/p/address-sanitizer/issues/detail?id=20),
but it also prevents us from enabling LLVM bootstrap with AddressSanitizer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149925 91177308-0d34-0410-b5e6-96231b3b80d8

Fix comment-rulers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149922 91177308-0d34-0410-b5e6-96231b3b80d8

Remove some unused functions.

LiveIntervalAnalysis has a number of functions that simply forward to
SlotIndexes.  Since SlotIndexes is a stand-alone analysis now, clients
should really refer to it directly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149921 91177308-0d34-0410-b5e6-96231b3b80d8

Don't explicitly renumber slot indices.

We have automatic local renumbering now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149920 91177308-0d34-0410-b5e6-96231b3b80d8

System headers after llvm headers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149919 91177308-0d34-0410-b5e6-96231b3b80d8

Enable streaming of bitcode

This CL delays reading of function bodies from initial parse until
materialization, allowing overlap of compilation with bitcode download.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149918 91177308-0d34-0410-b5e6-96231b3b80d8

Document the 'unwind' removal.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149914 91177308-0d34-0410-b5e6-96231b3b80d8

[unwind removal] Remove any mention of the 'unwind' instruction. What was that
instruction anyway?!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149913 91177308-0d34-0410-b5e6-96231b3b80d8

Remove some dead code and tidy things up now that vectors use ConstantDataVector
instead of always using ConstantVector.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149912 91177308-0d34-0410-b5e6-96231b3b80d8

[unwind removal] Remove a the obsolete 'unwind' enum value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149911 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure a reserved register has a live interval before merging.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149910 91177308-0d34-0410-b5e6-96231b3b80d8

[unwind removal] Remove all of the code for the dead 'unwind' instruction. There
were no 'unwind' instructions being generated before this, so this is in effect
a no-op.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149906 91177308-0d34-0410-b5e6-96231b3b80d8

[unwind removal] Don't write out the dead 'unwind' instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149905 91177308-0d34-0410-b5e6-96231b3b80d8

[unwind removal] We no longer have 'unwind' instructions being generated, so
remove the code that handles them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149901 91177308-0d34-0410-b5e6-96231b3b80d8

'unwind' is a keyword, not an instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149898 91177308-0d34-0410-b5e6-96231b3b80d8

[unwind removal] Remove the 'unwind' instruction parsing bits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149897 91177308-0d34-0410-b5e6-96231b3b80d8

Introduce helpers to compute the 32-bit varaints and 64-bit variants of
some architectures. These are useful for interacting with multiarch or
bi-arch GCC (or GCC-based) toolchains.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149895 91177308-0d34-0410-b5e6-96231b3b80d8

Test commit; also removes some trailing whitespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149887 91177308-0d34-0410-b5e6-96231b3b80d8

The 'unwind' instruction is deprecated and will be removed, making this test
obsolete.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149880 91177308-0d34-0410-b5e6-96231b3b80d8

Update docs describing objective-c property encoding. This includes support for properties that are not backed by an ivar.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149879 91177308-0d34-0410-b5e6-96231b3b80d8

Mention that the 'unwind' instruction is now deprecated.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149876 91177308-0d34-0410-b5e6-96231b3b80d8

DebugInfo: Provide a new hook to encode relationship between a property and an ivar.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149874 91177308-0d34-0410-b5e6-96231b3b80d8

Update ExceptionDemo to use ConstantDataArray.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149867 91177308-0d34-0410-b5e6-96231b3b80d8