1. New parameter attribute called 'inreg'. It has meaning "place this
parameter in registers, if possible". This is some generalization of
gcc's regparm(n) attribute. It's currently used only in X86-32 backend.
2. Completely rewritten CC handling/lowering code inside X86 backend.
Merged stdcall + c CCs and fastcall + fast CC.
3. Dropped CSRET CC. We cannot add struct return variant for each
target-specific CC (e.g. stdcall + csretcc and so on).
4. Instead of CSRET CC introduced 'sret' parameter attribute. Setting in
on first attribute has meaning 'This is hidden pointer to structure
return. Handle it gently'.
5. Fixed small bug in llvm-extract + add new feature to
FunctionExtraction pass, which relinks all internal-linkaged callees
from deleted function to external linkage. This will allow further
linking everything together.

NOTEs: 1. Documentation will be updated soon.
       2. llvm-upgrade should be improved to translate csret => sret.
          Before this, there will be some unexpected test fails.
llvm-svn: 33597

llvm-svn: 33596

llvm-svn: 33595

When a value is found to have the same name as another, try harder to
disambiguate when its a type plane collapse issue and when it isn't. We
traverse the type to see if it contains an integer. If it does not then
we issue the error because it can't be resulting from integer type planes
collapsing. Otherwise we just rename it, even if that's a bit of overkill.

llvm-svn: 33594

"redefinition" errors that cause the upgrade to fail.

llvm-svn: 33593

llvm-svn: 33592

Mozilla that Anton tracked down.

llvm-svn: 33591

llvm-svn: 33590

llvm-svn: 33589

llvm-svn: 33588

llvm-svn: 33587

llvm-svn: 33586

llvm-svn: 33585

SmallPtrSet.  Some clients will need to use SmallPtrSet directly though if
they need to iterate over the set.

llvm-svn: 33584

llvm-svn: 33583

llvm-svn: 33582

llvm-svn: 33581

was not a power of two.  Now it rounds up to the next power of two internally.

llvm-svn: 33580

llvm-svn: 33579

llvm-svn: 33578

llvm-svn: 33577

llvm-svn: 33576

llvm-svn: 33574

llvm-svn: 33573

llvm-svn: 33572

llvm-svn: 33571

llvm-svn: 33570

llvm-svn: 33569

llvm-svn: 33568

llvm-svn: 33567

llvm-svn: 33566

llvm-svn: 33565

llvm-svn: 33564

llvm-svn: 33563

llvm-svn: 33562

llvm-svn: 33561

llvm-svn: 33560

Now we can compile llvm-gcc on arm-linux-gnueabi!

llvm-svn: 33558

llvm-svn: 33557

llvm-svn: 33556