Contributer: Sasa Stankovic 
llvm-svn: 159574

This is still a work in progress but I believe it is currently good enough
to fix PR13122 "Need unit test driver for codegen IR passes".  For example,
you can run llc with -stop-after=loop-reduce to have it dump out the IR after
running LSR.  Serializing machine-level IR is not yet supported but we have
some patches in progress for that.

The plan is to serialize the IR to a YAML file, containing separate sections
for the LLVM IR, machine-level IR, and whatever other info is needed.  Chad
suggested that we stash the stop-after pass in the YAML file and use that
instead of the start-after option to figure out where to restart the
compilation.  I think that's a great idea, but since it's not implemented yet
I put the -start-after option into this patch for testing purposes.

llvm-svn: 159570

llvm-svn: 159569

This makes it possible to just use a zero value to represent "no pass", so
the phony NoPassID global variable is no longer needed.

llvm-svn: 159568

This is a preliminary step toward having TargetPassConfig be able to
start and stop the compilation at specified passes for unit testing
and debugging.  No functionality change.

llvm-svn: 159567

My last checkin was apparently not the branch I intended. It was missing one change (added by chandlerc), and contained a spurious change.

llvm-svn: 159548

llvm-svn: 159546

register does not have multiple definitions. Modified TwoAddressInstructionPass
to use getUniqueVRegDef instead of getVRegDef.

llvm-svn: 159545

Reapplies r159406 with minor cleanup. The regressions appear to have been spurious.

llvm-svn: 159541

Patch by Matt Fischer!

llvm-svn: 159538

llvm-svn: 159534

  - Changed isSingleNumber method behaviour. Now this flag is calculated on demand.
IntegersSubsetMapping
  - Optimized diff operation.
  - Replaced type of Items field from std::list with std::map.
  - Added new methods:
    bool isOverlapped(self &RHS)
    void add(self& RHS, SuccessorClass *S)
    void detachCase(self& NewMapping, SuccessorClass *Succ)
    void removeCase(SuccessorClass *Succ)
    SuccessorClass *findSuccessor(const IntTy& Val)
    const IntTy* getCaseSingleNumber(SuccessorClass *Succ)
IntegersSubsetTest
  - DiffTest: Added checks for successors.
SimplifyCFG
  Updated SwitchInst usage (now it is case-ragnes compatible) for
    - SimplifyEqualityComparisonWithOnlyPredecessor
    - FoldValueComparisonIntoPredecessors

llvm-svn: 159527

llvm-svn: 159522

1) DIContext is now able to return function name for a given instruction address (besides file/line info).
2) llvm-dwarfdump accepts flag --functions that prints the function name (if address is specified by --address flag).
3) test case that checks the basic functionality of llvm-dwarfdump added

llvm-svn: 159512

implicit_def, the other instruction can be anything, including instructions
that define multiple values. Be careful about that and don't assume what operand
0 is.
Fixes pr13249.

llvm-svn: 159509

llvm-svn: 159504

Reduce code size by using a second switch statement to avoid extra calls to SelectAtomic64. Also catch cases where SelectAtomic64 fails.

llvm-svn: 159503

llvm-svn: 159502

Fix a crash on release builds if gather intrinsics are passed a non-constant value for the last argument.

llvm-svn: 159501

Use a second switch statement to reduce number of calls to SelectGather in code. Reduces code size a bit.

llvm-svn: 159500

No functionality change.

llvm-svn: 159497

llvm-svn: 159491

a reduced testcase, but this fixes pr13209.

llvm-svn: 159479

llvm-svn: 159471

Use getUniqueVRegDef.
Replace a loop with existing interfaces: modifiesRegister and readsRegister.
Factor out code into inline functions and simplify the code.

llvm-svn: 159470

instructions with two register operands.

llvm-svn: 159465

When a local virtual register is made global, make sure to clear any
existing kill flags.

llvm-svn: 159461

This would previously get reported as the misleading "Virtual register
def doesn't dominate all uses."

llvm-svn: 159460

This happens when codegenprepare is invoked via opt.

llvm-svn: 159457

This comes in handy during peephole optimization.

llvm-svn: 159453

really happening.  No intended functionality change.

llvm-svn: 159451

RefreshCallGraph: ignore 'invoke intrinsic'. IntrinsicInst doesnt not recognize invoke, and shouldnt at this point, since the rest of LLVM codebase doesnt expect invoke of intrinsics

llvm-svn: 159441

ignore 'invoke new' in isInstructionTriviallyDead, since most callers are not ready to handle invokes. instcombine will take care of this.

llvm-svn: 159440

llvm-svn: 159433

the optimizers producing a multiply expression with more multiplications than
the original (!).

llvm-svn: 159426

This was always part of the VMCore library out of necessity -- it deals
entirely in the IR. The .cpp file in fact was already part of the VMCore
library. This is just a mechanical move.

I've tried to go through and re-apply the coding standard's preferred
header sort, but at 40-ish files, I may have gotten some wrong. Please
let me know if so.

I'll be committing the corresponding updates to Clang and Polly, and
Duncan has DragonEgg.

Thanks to Bill and Eric for giving the green light for this bit of cleanup.

llvm-svn: 159421

llvm-svn: 159417

(a.k.a. MDNodes). The module doesn't belong in Analysis. Move it to the VMCore
instead.

llvm-svn: 159414

This reverts commit r159406. I noticed a performance regression so I'll back out for now.

llvm-svn: 159411

Before this patch in pic 32 bit code we would add the global base register
and not load from that address. This is a really old bug, but before the
introduction of the tls attributes we would never select initial exec for
pic code.

llvm-svn: 159409