target machine from those that are only needed by codegen. The goal is to
sink the essential target description into MC layer so we can start building
MC based tools without needing to link in the entire codegen.

First step is to refactor TargetRegisterInfo. This patch added a base class
MCRegisterInfo which TargetRegisterInfo is derived from. Changed TableGen to
separate register description from the rest of the stuff.

llvm-svn: 133782

handle functions with return type Complex long long.

llvm-svn: 133497

llvm-svn: 133496

llvm-svn: 133494

llvm-svn: 133118

This simplifies many of the target description files since it is common
for register classes to be related or contain sequences of numbered
registers.

I have verified that this doesn't change the files generated by TableGen
for ARM and X86. It alters the allocation order of MBlaze GPR and Mips
FGR32 registers, but I believe the change is benign.

llvm-svn: 133105

The register allocators automatically filter out reserved registers and
place the callee saved registers last in the allocation order, so custom
methods are no longer necessary just for that.

Some targets still use custom allocation orders:

ARM/Thumb: The high registers are removed from GPR in thumb mode. The
NEON allocation orders prefer to use non-VFP2 registers first.

X86: The GR8 classes omit AH-DH in x86-64 mode to avoid REX trouble.

SystemZ: Some of the allocation orders are omitting R12 aliases without
explanation. I don't understand this target well enough to fix that. It
looks like all the boilerplate could be removed by reserving the right
registers.

llvm-svn: 132781

llvm-svn: 132777

llvm-svn: 132768

No functional change.

Part of PR6965

llvm-svn: 132763

dynamically allocated stack area was not set.

llvm-svn: 132758

llvm-svn: 132756

llvm-svn: 132726

llvm-svn: 132725

- Fix indentation.
- Move comments.
- Fit lines in 80 columns.
- Remove dead code.

llvm-svn: 132724

llvm-svn: 132718

llvm-svn: 132717

Add test case for C++ exception handling and fix the following mistakes in MipsFrameLowering::emitPrologue:

- cfi directives are not inserted at the right location or in the right order.
- The source MachineLocation for the cfi directive that changes the cfa register
  to $fp should be MachineLocation::VirtualFP.
- A PROLOG_LABEL that marks the beginning of cfi_offset directives for
  callee-saved register is emitted even when no callee-saved registers are
  saved.
- When a callee-saved double precision register is saved, two cfi_offset
  directives, one for each of the paired single precision registers, should be
  emitted.
 
 

llvm-svn: 132703

llvm-svn: 132448

llvm-svn: 132444

llvm-svn: 132355

nand), atomic.swap and atomic.cmp.swap, all in i8, i16 and i32 versions.
The intrinsics are implemented by creating pseudo-instructions, which are
then expanded in the method MipsTargetLowering::EmitInstrWithCustomInserter.

Patch by Sasa Stankovic.

llvm-svn: 132323

Dynamic, Initial Exec and Local Exec TLS models.

Patch by Sasa Stankovic

llvm-svn: 132322

directives.

Fixes PR9826.

llvm-svn: 132317

and should probably be encoded as

DW_OP_reg 32 DW_OP_piece 4 DW_OP_reg 33

llvm-svn: 132274

in MipsRegisterInfo::getCalleeSavedRegs so that both registers paired for a
double precision register get saved.

 

llvm-svn: 132243

Need this to prevent emitting illegal conditional move instructions. 

llvm-svn: 132240

a function has any function calls.

llvm-svn: 132140

llvm-svn: 132136

llvm-svn: 132131

llvm-svn: 132127

llvm-svn: 132098

been defined in MipsInstrFPU.td.

llvm-svn: 132076

llvm-svn: 132074

llvm-svn: 132070

return 0 if there are no function calls made. 

llvm-svn: 132065

llvm-svn: 132063

llvm-svn: 132030

offsets that are larger than 0x10000.

llvm-svn: 132003

deficiencies exist:

- Works only if ABI is o32.
- Zero-sized structures cannot be passed.
- There is a lot of redundancy in generated code.

llvm-svn: 131986