llvm-svn: 108736

Teach computeRegisterProperties() to compute "representative" register class for legal value types. A "representative" register class is the largest legal super-reg register class for a value type. e.g. On i386, GR32 is the rep register class for i8 / i16 / i32; on x86_64 it would be GR64.

This property will be used by the register pressure tracking instruction scheduler.

llvm-svn: 108735

non-const.

llvm-svn: 108734

Do not try to insert local variable info to a DIE used for function declaration.

llvm-svn: 108731

it should set the jump table encloding the EK_Inline. This prevents
a second, unused, copy of the table from being emitted after the function
body. PR6581.

llvm-svn: 108730

llvm-svn: 108727

it should set the jump table encloding the EK_Inline. This prevents
a second, unused, copy of the table from being emitted after the function
body. PR7499.

llvm-svn: 108722

llvm-svn: 108700

by Benjamin Saunders.

llvm-svn: 108699

pressure estimates and liveness alongside.

Still experimental.

llvm-svn: 108698

llvm-svn: 108695

llvm-svn: 108691

Patch by Benjamin Saunders.

llvm-svn: 108690

llvm-svn: 108688

llvm-svn: 108687

llvm-svn: 108685

llvm-svn: 108684

llvm-svn: 108683

llvm-svn: 108682

assembling; remove crufty custom cleanup code.

llvm-svn: 108681

llvm-svn: 108680

llvm-svn: 108679

into MCObjectStreamer.

Origonal Windows COFF implementation by Nathan Jedffords.

llvm-svn: 108678

TblGen/AsmMatcher: Add support for honoring instruction Requires<[]> attributes as part of the matcher.
 - Currently includes a hack to limit ourselves to "In32BitMode" and "In64BitMode", because we don't have the other infrastructure to properly deal with setting SSE, etc. features on X86.

llvm-svn: 108677

llvm-svn: 108674

 - Unfortunate, but necessary for now to handle subtarget instruction matching. Eventually we should factor out the lower level target machine information so we don't need to do this.

llvm-svn: 108664

portable enough.
 - Downside is we now double dispatch through a stub function, but this isn't
   performance critical.

llvm-svn: 108661

sequences, not just strings.

llvm-svn: 108655

llvm-svn: 108654

llvm-svn: 108653

llvm-svn: 108652

support macros.

llvm-svn: 108649

llvm-svn: 108648

llvm-svn: 108647

llvm-svn: 108646

llvm-svn: 108645

llvm-svn: 108642

Add a DAGCombine xform to fold away redundant float->double->float conversions around sqrt instructions.
I am assured by people more knowledgeable than me that there are no rounding issues in eliminating this.

This fixed <rdar://problem/8197504>.

llvm-svn: 108639

LoopSplitter be run prior to register allocation.

Entirely for testing purposes at the moment.

llvm-svn: 108634

llvm-svn: 108631