preallocated.  While reg-to-reg dependences were already handled, this
change required new code for adding edges to/from call instructions.
This was part of the extensive changes to the way code generation occurs
for function call arguments and return values.
See log for CodeGen/PhyRegAlloc.cpp.

llvm-svn: 6467

call arguments and return values:
Now all copy operations before and after a call are generated during
selection instead of during register allocation.
The values are copied to virtual registers (or to the stack), but
in the former case these operands are marked with the correct physical
registers according to the calling convention.
Although this complicates scheduling and does not work well with
live range analysis, it simplifies the machine-dependent part of
register allocation.

llvm-svn: 6465

llvm-svn: 6452

llvm-svn: 6451

llvm-svn: 6423

llvm-svn: 6385

and passes the real code to a memory-outputting code emitter. This may be
removed at a later point in development.

llvm-svn: 6379

    Fixed spilling of %fcc[0-3] which are part of %fsr.

(2) Moved some machine-independent reg-class code to class TargetRegInfo
    from SparcReg{Class,}Info.

(3) Renamed MachienOperand::opIsDef to MachineOperand::opIsDefOnly()
    and related functions and flags.  Fixed several bugs where only
    "isDef" was being checked, not "isDefAndUse".

llvm-svn: 6341

llvm-svn: 6304

llvm-svn: 6301

llvm-svn: 6131

* *** Finally mark values that are inputs to PHIs as killed when appropriate.
   This should make the generated code quite a bit better.  For example, the
   local-ra will not have to spill PHI inputs at the end of predecessor BB's
   anymore.

llvm-svn: 6117

llvm-svn: 6116

* Change getVarInfo to take real virtual register numbers and offset them
  itself.  This has caused me so much grief, it's not even funny.

llvm-svn: 6115

llvm-svn: 6112

* Update LiveVar info better, fixing bug: Jello/2003-05-11-PHIRegAllocBug.ll

llvm-svn: 6110

llvm-svn: 6109

llvm-svn: 6056

llvm-svn: 6054

llvm-svn: 6015

llvm-svn: 6012

llvm-svn: 6011

llvm-svn: 6002

llvm-svn: 5982

llvm-svn: 5976

llvm-svn: 5871

llvm-svn: 5859

look nicer and removed useless stuff.

Also renamed a few variables, moved them into namespaces, converted outputting
to a file into a print to std::cerr with a DEBUG() guard, as all passes should
do anyway.

No functional changes have been made. However, this code now compiles.

llvm-svn: 5769

* Lines must be wrapped at 80 chars. This is a hard limit.
* Consistent style on functions, braces, if, for, etc. Code must be readable.

No functional changes have been made, even though I added a new typedef.

llvm-svn: 5768

llvm-svn: 5764

llvm-svn: 5755

llvm-svn: 5329

llvm-svn: 5326

llvm-svn: 5322

llvm-svn: 5321

* Fix calculation of frame offsets when there is an offset.

llvm-svn: 5318

llvm-svn: 5317

llvm-svn: 5314

llvm-svn: 5312

llvm-svn: 5311