Allow schedulers to order DAG edges by critical path. This makes
DFS-based heuristics more stable and effective.

llvm-svn: 173317

llvm-svn: 173316

llvm-svn: 173313

llvm-svn: 173311

This is a helper class for the AttributeSetImpl class. It holds a set of
attributes that apply to a single element: function, return type, or
parameter.

These are uniqued.

llvm-svn: 173310

Push down the conversion of the alignment from the bit mask to a real number into the attribute implementation class.

llvm-svn: 173304

llvm-svn: 173302

llvm-svn: 173298

This intrinsic is translated to ALLOC_EXPORT_WORD1_SWIZ, hence its
name. It is used to store vs/fs outputs

Patch by: Vincent Lejeune

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 173297

Patch by: Vincent Lejeune

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 173296

llvm-svn: 173293

This fixes some edge cases that we would get wrong with uint64_ts.
PR14986.

llvm-svn: 173289

llvm-svn: 173288

llvm-svn: 173285

llvm-svn: 173284

This causes crashes during the build of compiler-rt during selfhost. Add a
testcase for coverage.

llvm-svn: 173279

This does the right thing unless the multiplication overflows, but the old code
didn't handle that case either.

llvm-svn: 173276

llvm-svn: 173275

Clean up assignment of CalleeSaveStackSlotSize: get rid of the default and explicitly set this in every target that needs to change it from the default.

llvm-svn: 173270

This is still an egregious hack since we don't have a nice interface for this
kind of thing but should help the valgrind leak check buildbot to become green.

llvm-svn: 173267

Otherwise this might hide the problems.

llvm-svn: 173265

[asan] use ADD instead of OR when applying shadow offset of PowerPC. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55975 for details

llvm-svn: 173258

used uninitialized, since it fails to understand that Array is only used when
SingleValue is not, and outputs a warning.  It also seems generally safer given
that the constructor is non-trivial and has plenty of early exits.

llvm-svn: 173242

llvm-svn: 173240

llvm-svn: 173239

llvm-svn: 173238

It fixes --vg-leak.

llvm-svn: 173237

IRTests/ConstantsTest.cpp: AsInstructionsTest: Delete each instruction immediately if it is not linked.

llvm-svn: 173236

llvm-svn: 173235

llvm-svn: 173234

llvm-svn: 173233

The requirements of the strong heuristic are:

* A Protector is required for functions which contain an array, regardless of
  type or length.

* A Protector is required for functions which contain a structure/union which
  contains an array, regardless of type or length.  Note, there is no limit to
  the depth of nesting.

* A protector is required when the address of a local variable (i.e., stack
  based variable) is exposed. (E.g., such as through a local whose address is
  taken as part of the RHS of an assignment or a local whose address is taken as
  part of a function argument.)

llvm-svn: 173231

SSPStrong applies a heuristic to insert stack protectors in these situations:

* A Protector is required for functions which contain an array, regardless of
  type or length.

* A Protector is required for functions which contain a structure/union which
  contains an array, regardless of type or length.  Note, there is no limit to
  the depth of nesting.

* A protector is required when the address of a local variable (i.e., stack
  based variable) is exposed. (E.g., such as through a local whose address is
  taken as part of the RHS of an assignment or a local whose address is taken as
  part of a function argument.)

This patch implements the SSPString attribute to be equivalent to
SSPRequired. This will change in a subsequent patch.

llvm-svn: 173230

Collections of attributes are handled via the AttributeSet class now. This
finally frees us up to make significant changes to how attributes are structured.

llvm-svn: 173228

llvm-svn: 173224

Remove Cxxx registers, add new special register - "ALU_CONST" and new
operand for each alu src - "sel". ALU_CONST is used to designate that the
new operand contains the value to override src.sel, src.kc_bank, src.chan
for constants in the driver.

Patch by: Vadim Girlin

Vincent Lejeune:
  - Use pointers for constants
  - Fold CONST_ADDRESS when possible

Tom Stellard:
  - Give CONSTANT_BUFFER_0 its own address space
  - Use integer types for constant loads

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 173222

Patch by: Vincent Lejeune

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 173221

Patch by: Vincent Lejeune

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 173220

Add support for reverse pointer induction variables. These are loops that contain pointers that count backwards.
For example, this is the hot loop in BZIP:

  do {
    m = *--p;
    *p = ( ... );
  } while (--n);

llvm-svn: 173219

when removing one attribute. This further encapsulates the use of the attributes.

llvm-svn: 173214