llvm-svn: 47500

Really really bad local register allocator bug. On X86, it was never using ESI, EDI, and EBP because of a bug in RALocal::isPhysRegAvailable(). For example, when
it checks if ESI is available, it then looks at registers aliases to ESI. SIL is marked -2 (not allocatable) but isPhysRegAvailable() incorrectly assumes it is in use and returns false for ESI.

llvm-svn: 47499

--analyze-function option to analyze specific functions.

llvm-svn: 47498

--analyze-function option to dump/view the CFGs of specific functions.

llvm-svn: 47497

llvm-svn: 47496

llvm-svn: 47495

llvm-svn: 47494

llvm-svn: 47493

llvm-svn: 47492

appear in a file.

llvm-svn: 47491

llvm-svn: 47489

llvm-svn: 47488

llvm-svn: 47485

the way through.  It is now used for codegen.

llvm-svn: 47484

llvm-svn: 47483

llvm-svn: 47482

llvm-svn: 47481

llvm-svn: 47480

llvm-svn: 47479

llvm-svn: 47478

llvm-svn: 47476

the definition of the operand also reaches its uses.

llvm-svn: 47475

instead of with mmx registers.  This horribleness is apparently
done by gcc to avoid having to insert emms in places that really 
should have it.  This is the second half of rdar://5741668.

llvm-svn: 47474

llvm-svn: 47473

llvm-svn: 47472

llvm-svn: 47471

GCC apparently does this, and code depends on not having to do
emms when this happens.  This is x86-64 only so far, second half
should handle x86-32.

rdar://5741668

llvm-svn: 47470

llvm-svn: 47469

llvm-svn: 47468

that a value is >= 32, check that all of the high bits are zero, not
just one or more.

llvm-svn: 47467

assumption logic for lval::DeclVal.

llvm-svn: 47466

against '0' of the same bit-width.

llvm-svn: 47465

llvm-svn: 47464

is symbolic.

llvm-svn: 47463

llvm-svn: 47461

llvm-svn: 47460

operands are symbolic lvalues.

llvm-svn: 47459

new things.

llvm-svn: 47458

early clobbers if the clobber list contains a *register* not some thing
like {memory}, {dirflag} etc.

llvm-svn: 47457

about.  The default logic is to invalidate the values of all values
passed-by-reference.

llvm-svn: 47456