This reapplies r256277 with two changes:

- In emitFnAttrCompatCheck, change FuncName's type to std::string to fix
  a use-after-free bug.
- Remove an unnecessary install-local target in lib/IR/Makefile. 

Original commit message for r252949:

Provide a way to specify inliner's attribute compatibility and merging
rules using table-gen. NFC.

This commit adds new classes CompatRule and MergeRule to Attributes.td,
which are used to generate code to check attribute compatibility and
merge attributes of the caller and callee.

rdar://problem/19836465

llvm-svn: 256304

llvm-svn: 256303

It turns out that his is *really* slow. With this change the link of
clang with plugin-opt=emit-llvm goes from 41 to 26 seconds.

We can add an option to enable it again if needed.

llvm-svn: 256302

llvm-svn: 256301

llvm-svn: 256300

For targets to add their own operand types as needed, as advertised in
Operand's comment, they need to be able to specify an alternate namespace
for OperandType names too. This matches the RegisterOperand class.

llvm-svn: 256299

llvm-svn: 256292

llvm-svn: 256291

llvm-svn: 256290

Summary:
  For some reason doing executing an MUBUF instruction with the addr64
  bit set and a zero base pointer in the resource descriptor causes
  the memory operation to be dropped when the shader is executed using
  the HSA runtime.

  This kind of MUBUF instruction is commonly used when the pointer is
  stored in VGPRs.  The base pointer field in the resource descriptor
  is set to zero and and the pointer is stored in the vaddr field.

  This patch resolves the issue by only using flat instructions for
  global memory operations when targeting HSA. This is an overly
  conservative fix as all other configurations of MUBUF instructions
  appear to work.

  NOTE: re-commit by fixing a failure in Codegen/AMDGPU/llvm.dbg.value.ll

Reviewers: tstellarAMD

Subscribers: arsenm, llvm-commits

Differential Revision: http://reviews.llvm.org/D15543

llvm-svn: 256282

llvm-svn: 256281

Some of the bots failed again.

llvm-svn: 256280

llvm-svn: 256279

This reapplies r252990 and r252949. I've added member function getKind
to the Attr classes which returns the enum or string of the attribute.

Original commit message for r252949:

Provide a way to specify inliner's attribute compatibility and merging
rules using table-gen. NFC.

This commit adds new classes CompatRule and MergeRule to Attributes.td,
which are used to generate code to check attribute compatibility and
merge attributes of the caller and callee.

rdar://problem/19836465

llvm-svn: 256277

llvm-svn: 256276

This reverts commit r256273.

It broke CodeGen/AMDGPU/llvm.dbg.value.ll

llvm-svn: 256275

The code for deleting dead global variables and functions was
duplicated.

This is in preparation for also deleting dead global aliases.

llvm-svn: 256274

Summary:
  For some reason doing executing an MUBUF instruction with the addr64
  bit set and a zero base pointer in the resource descriptor causes
  the memory operation to be dropped when the shader is executed using
  the HSA runtime.

  This kind of MUBUF instruction is commonly used when the pointer is
  stored in VGPRs.  The base pointer field in the resource descriptor
  is set to zero and and the pointer is stored in the vaddr field.

  This patch resolves the issue by only using flat instructions for
  global memory operations when targeting HSA. This is an overly
  conservative fix as all other configurations of MUBUF instructions
  appear to work.

Reviewers: tstellarAMD

Subscribers: arsenm, llvm-commits

Differential Revision: http://reviews.llvm.org/D15543

llvm-svn: 256273

llvm-svn: 256272

Not passing an iterator to processGlobal will allow it to work with
other GlobalValues.

llvm-svn: 256271

llvm-svn: 256265

This patch removes all weight-related interfaces from BPI and replace
them by probability versions. With this patch, we won't use edge weight
anymore in either IR or MC passes. Edge probabilitiy is a better
representation in terms of CFG update and validation.


Differential revision: http://reviews.llvm.org/D15519 

llvm-svn: 256263

Summary:
These were deprecated 11 months ago when a generic
llvm.experimental.gc.result intrinsic, which works for all types, was added.

Reviewers: sanjoy, reames

Subscribers: sanjoy, chenli, llvm-commits

Differential Revision: http://reviews.llvm.org/D15719

llvm-svn: 256262

Differential Revision: http://reviews.llvm.org/D15619

Reviewed-by: rafael
llvm-svn: 256258

Summary:
Previously, RS4GC crashed in CreateGCRelocates() because it assumed
that every base is also in the array of live variables, which isn't true if a
live variable has a constant base.

This change fixes the crash by making sure CreateGCRelocates() won't try to
relocate a live variable with a constant base.  This would be unnecessary
anyway because anything with a constant base won't move.

Reviewers: reames

Subscribers: llvm-commits, sanjoy

Differential Revision: http://reviews.llvm.org/D15556

llvm-svn: 256252

This is a recommit of r256004 which was reverted in r256160. The issue was the
incorrect promotion for half and byte loads transformed into mov instructions.
This fix will replace half and byte type loads only with bit field extracts.

Original commit message:

This change promotes load instructions which directly read from stored by
replacing them with mov instructions. If the store is wider than the load,
the load will be replaced with a bitfield extract.
For example :
  STRWui %W1, %X0, 1
  %W0 = LDRHHui %X0, 3
becomes
  STRWui %W1, %X0, 1
  %W0 = UBFMWri %W1, 16, 31

llvm-svn: 256249

llvm-svn: 256242

Differential Revision: http://reviews.llvm.org/D15414

llvm-svn: 256237

In r256077, I added printing for DIExpressions in DEBUG_VALUE comments,
but neglected to handle DW_OP_bit_piece operands. Thanks to
Mikael Holmen and Joerg Sonnenberger for spotting this.

llvm-svn: 256236

llvm-svn: 256229

InitMCObjectFileInfo was trying to override the triple in awkward ways.
For example, a triple specifying COFF but not Windows was forced as ELF.
This makes it easy for internal invariants to get violated, such as
those which triggered PR25912.

This fixes PR25912.

llvm-svn: 256226

llvm-svn: 256225

Use an iterator that handles an empty subprogram list.

Fixes PR25915.

llvm-svn: 256224

This uses the same criteria used in CFE's CodeGenPGO to identify hot and cold
callees and uses values of inlinehint-threshold and inlinecold-threshold
respectively as the thresholds for such callees.

Differential Revision: http://reviews.llvm.org/D15245

llvm-svn: 256222

This patch adds an option, -safe-stack-no-tls, for using normal
storage instead of thread-local storage for the unsafe stack pointer.
This can be useful when SafeStack is applied to an operating system
kernel.

http://reviews.llvm.org/D15673

Patch by Michael LeMay.

llvm-svn: 256221

The linker requires that a comdat section must be associated
with a another comdat section that precedes it. This
means the comdat section's name needs to use the  profile name
var's name.

Patch tested by Johan Engelen.

llvm-svn: 256220

llvm-svn: 256217

llvm-svn: 256215

This commit adds the 'AVRMachineFunctionInfo' class, which simply stores
basic properties about generated machine functions.

llvm-svn: 256213

llvm-svn: 256211