This fixes clang generated blocks' variables' debug info.
Radar 9279956.

llvm-svn: 130373

llvm-svn: 130360

- expansion of SELECT_CC into SETCC
- force SETCC result type to i1
- custom selection for handling i1 using SETCC

Patch by Dan Bailey

llvm-svn: 130358

- selection of SELP instruction
- new selp.ll test

Patch by Dan Bailey

llvm-svn: 130357

- fix typo in MOV
- correct fp rounding on CVT
- new cvt.ll test

Patch by Dan Bailey

llvm-svn: 130356

- selection of FNEG instruction
- new fneg.ll test

Patch by Dan Bailey

llvm-svn: 130355

- expansion of EXTLOAD and TRUNCSTORE instructions

Patch by Dan Bailey

llvm-svn: 130354

- selection of bitwise preds (AND, OR, XOR)
- new bitwise.ll test

Patch by Dan Bailey

llvm-svn: 130353

- immediate value cast as long not int
- handles initializer for constant array

Patch by Dan Bailey

llvm-svn: 130352

llvm-svn: 130350

llvm-svn: 130348

llvm-svn: 130343

give it a bit more responsibility. Also implement it for MachO.

If hacked to use cfi, 32 bit MachO will produce

.cfi_personality 155, L___gxx_personality_v0$non_lazy_ptr

and 64 bit will produce

.cfi_presonality ___gxx_personality_v0

The general idea is that .cfi_personality gets passed the final symbol. It is
up to codegen to produce it if using indirect representation (like 32 bit
MachO), but it is up to MC to decide which relocations to create.

llvm-svn: 130341

Modified LinearFunctionTestReplace to push the condition on the dead
list instead of eagerly deleting it. This can cause unnecessary
IV rewrites, which should have no effect on codegen and will not be an
issue once we stop generating canonical IVs.

llvm-svn: 130340

llvm-svn: 130339

Make the fast-isel code for literal 0.0 a bit shorter/faster, since 0.0 is common.  rdar://problem/9303592 .

llvm-svn: 130338

llvm-svn: 130337

llvm-svn: 130331

value is zero so it does not add a NULL expr operand.

llvm-svn: 130330

llvm-svn: 130327

llvm-svn: 130326

successors) and use inverse depth first search to traverse the BBs. However
that doesn't work when the CFG has infinite loops. Simply do a linear
traversal of all BBs work just fine.

rdar://9344645

llvm-svn: 130324

only check arguments with pointer types. Update the documentation
of IntrReadArgMem reflect this.

While here, add support for TBAA tags on intrinsic calls.

llvm-svn: 130317

llvm-svn: 130316

Simplify cfg inserts a call to trap when unreachable code is detected. Assign DebugLoc to this new trap instruction.

llvm-svn: 130315

We cannot rely on the <imp-def> operands added by LiveIntervals in all cases as
demonstrated by the test case.

llvm-svn: 130313

non private symbol. This will be use for handling

foo:
  .cfi_startproc
  ...

On OS X where we have to create a foo.eh symbol.

llvm-svn: 130305

effective in avoiding recomputation of LCSSA form; the widespread
use of instsimplify (which looks through phi nodes) means it was
not preserving LCSSA form anyway; and instcombine is no longer
scheduled in the middle of the loop passes so this doesn't matter
anymore.

llvm-svn: 130301

llvm-svn: 130294

length.  (I'm planning to use this to implement byval.)

llvm-svn: 130274

step towards using .cfi_* on OS X.

llvm-svn: 130273

rdar://problem/9303306 .

llvm-svn: 130272

Fix for PR9633 [indvars] Assertion `isa<X>(Val) && "cast<Ty>() argument of incompatible type!"' failed.

Added a type check in ScalarEvolution::computeSCEVAtScope to handle the case in which operands of an
AddRecExpr in the current scope are folded.

llvm-svn: 130271

an earlier load could be widened to encompass a later load.  For example,
if we see:

  X = load i8* P, align 4
  Y = load i8* (P+3), align 1

and we have a 32-bit native integer type, we can widen the former load
to i32 which then makes the second load redundant.  GVN can't actually
do anything with this load/load relation yet, so this isn't testable, but 
it is the next step to resolving PR6627, and a fairly general class of 
"merge neighboring loads" missed optimizations.

llvm-svn: 130250

The number of blocks covered by a live range must be strictly decreasing when
splitting, otherwise we can't allow repeated splitting.

llvm-svn: 130249

llvm-svn: 130248

work-in-progress that is not progressing, and it has issues.

llvm-svn: 130247

more callee-saved registers and introduce copies. Only allows it if scheduling
a node above calls would end up lessen register pressure.

Call operands also has added ABI restrictions for register allocation, so be
extra careful with hoisting them above calls.

rdar://9329627

llvm-svn: 130245

when X has multiple uses.  This is useful for exposing secondary optimizations,
but the X86 backend isn't ready for this when X has a single use.  For example,
this can disable load folding.

This is inching towards resolving PR6627.

llvm-svn: 130238

llvm-svn: 130237