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

Add pass that expands pseudo instructions into target instructions after register allocation. Define pseudos that get expanded into mtc1 or mfc1 instructions.

llvm-svn: 129594

Luis Felipe Strano Moraes!

llvm-svn: 129558

llvm-svn: 129099

Move transformation of JmpLink and related nodes done during instruction selection to Legalize phase.

llvm-svn: 128830

llvm-svn: 128751

llvm-svn: 128750

llvm-svn: 128741

llvm-svn: 128650

llvm-svn: 128574

llvm-svn: 127453

llvm-svn: 127349

llvm-svn: 127034

llvm-svn: 127029

llvm-svn: 127027

llvm-svn: 127017

Fix a lot of o32 CC issues and add a bunch of tests. Patch by Akira Hatanaka with some small modifications by me.

llvm-svn: 125292

llvm-svn: 123766

llvm-svn: 123763

llvm-svn: 123760

something that just glues two nodes together, even if it is
sometimes used for flags.

llvm-svn: 122310

llvm-svn: 121377

Remove target specific node MipsISD::CMov, which is not used because all conditional moves are directly matched using tablegen patterns. If there's a need in the future, we can introduce it again

llvm-svn: 121164

llvm-svn: 119990

and as such can be represented by an MVT - the more complicated
EVT is not needed.  Use MVT for ValVT everywhere.

llvm-svn: 118245