enables SelectionDAG::getLoad at MipsISelLowering.cpp:1914 to return a
pre-existing node instead of redundantly create a new node every time it is
called.

llvm-svn: 133811

llvm-svn: 133496

llvm-svn: 133494

llvm-svn: 133118

llvm-svn: 132777

No functional change.

Part of PR6965

llvm-svn: 132763

dynamically allocated stack area was not set.

llvm-svn: 132758

llvm-svn: 132756

llvm-svn: 132726

- Fix indentation.
- Move comments.
- Fit lines in 80 columns.
- Remove dead code.

llvm-svn: 132724

llvm-svn: 132444

llvm-svn: 132355

nand), atomic.swap and atomic.cmp.swap, all in i8, i16 and i32 versions.
The intrinsics are implemented by creating pseudo-instructions, which are
then expanded in the method MipsTargetLowering::EmitInstrWithCustomInserter.

Patch by Sasa Stankovic.

llvm-svn: 132323

Dynamic, Initial Exec and Local Exec TLS models.

Patch by Sasa Stankovic

llvm-svn: 132322

Need this to prevent emitting illegal conditional move instructions. 

llvm-svn: 132240

a function has any function calls.

llvm-svn: 132140

llvm-svn: 132131

been defined in MipsInstrFPU.td.

llvm-svn: 132076

llvm-svn: 132074

llvm-svn: 132070

return 0 if there are no function calls made. 

llvm-svn: 132065

llvm-svn: 132063

llvm-svn: 132030

deficiencies exist:

- Works only if ABI is o32.
- Zero-sized structures cannot be passed.
- There is a lot of redundancy in generated code.

llvm-svn: 131986

variable arguments in LowerCall and LowerFormalArguments. This should also fix
the bug in which handling of variable arguments is incorrect when the front-end
optimizes away unused fixed arguments.

llvm-svn: 131942

llvm-svn: 131928

llvm-svn: 131922

The following improvements are accomplished as a result of applying this patch:
- Fixed frame objects' offsets (relative to either the virtual frame pointer or
  the stack pointer) are set before instruction selection is completed. There is
  no need to wait until Prologue/Epilogue Insertion is run to set them.
- Calculation of final offsets of fixed frame objects is straightforward. It is
  no longer necessary to assign negative offsets to fixed objects for incoming
  arguments in order to distinguish them from the others.
- Since a fixed object has its relative offset set during instruction
  selection, there is no need to conservatively set its alignment to 4.
- It is no longer necessary to reorder non-fixed frame objects in 
  MipsFrameLowering::adjustMipsStackFrame.

llvm-svn: 131915

preparation for reversing StackDirection.

Fixed objects are created in the following order:  
 1. Incoming arguments passed on stack.
 2. va_arg objects (include both arguments that are passed in registers and
    pointer to the location of the first va_arg argument).
 3. $gp restore slot.
 4. Outgoing arguments passed on stack.
 5. Pointer to alloca'd space.

llvm-svn: 131767

passed in register or on the stack.

llvm-svn: 131758

saving and restoring them.

llvm-svn: 131745

Fix bug in which nodes that write to argument registers do not get glued with the JALR node. Patch by Sasa Stankovic

llvm-svn: 131714

llvm-svn: 131711

llvm-svn: 131668

llvm-svn: 131657

llvm-svn: 131012

Prevent instructions using $gp from being placed between a jalr and the instruction that restores the clobbered $gp.

llvm-svn: 130847

llvm-svn: 130131

llvm-svn: 129612

Fix lines that have incorrect indentation or exceed 80 columns. There is no change in functionality.

llvm-svn: 129606