invalid instruction sequence.

Rather than emitting an int-to-FP move instruction and an int-to-FP conversion
instruction during instruction selection, we emit a pseudo instruction which gets
expanded post-RA. Without this change, register allocation can possibly insert a
floating point register move instruction between the two instructions, which is not
valid according to the ISA manual.

mtc1 $f4, $4         # int-to-fp move instruction.
mov.s $f2, $f4       # move contents of $f4 to $f2.
cvt.s.w $f0, $f2     # int-to-fp conversion.

llvm-svn: 182042

llvm-svn: 182036

This option is used when the user wants to avoid emitting double precision FP
loads and stores. Double precision FP loads and stores are expanded to single
precision instructions after register allocation.

llvm-svn: 181718

llvm-svn: 178407

functions. Set AddedComplexity to determine the order in which patterns are
matched.

This simplifies selection of floating point loads/stores.

No functionality change intended.

llvm-svn: 175300

llvm-svn: 173401

register names in the standalone assembler llvm-mc.

Registers such as $A1 can represent either a 32 or
64 bit register based on the instruction using it.
In addition, based on the abi, $T0 can represent different
32 bit registers.


The problem is resolved by the Mips specific AsmParser 
td definitions changing to work together. Many cases of
RegisterClass parameters are now RegisterOperand.


Contributer: Vladimir Medic
llvm-svn: 172284

parameter.

llvm-svn: 170661

No functionality change.

llvm-svn: 170084

No functionality change.

llvm-svn: 170077

No functionality change.

llvm-svn: 170076

No functionality change.

llvm-svn: 170075

No functionality change.

llvm-svn: 170073

No functionality change.

llvm-svn: 170072

No functionality change.

llvm-svn: 170071

No functionality change.

llvm-svn: 170069

and separate encoding information from the rest.

llvm-svn: 170066

MipsInstrFPU.td.
 

llvm-svn: 170061

 

llvm-svn: 170060

 

llvm-svn: 170057

FFR2P_M.
 

llvm-svn: 170055

FFR1_W_M and FFR1P_M. The new instruction definitions have one-to-one
correspondence with the instructions in the ISA manual.
 

llvm-svn: 170053

llvm-svn: 169579

support and use it in place of HasMips32r2Or64.

llvm-svn: 168089

instructions.

llvm-svn: 167348

use load/store fragments defined in TargetSelectionDAG.td in place of them.
Unaligned loads/stores are either expanded or lowered to target-specific nodes,
so instruction selection should see only aligned load/store nodes.

No changes in functionality.

llvm-svn: 163960

Patch by Vladimir Medic.

llvm-svn: 162124

or not it is in mips16 mode. Define MipsPseudo (mode-independant pseudo) and
PseudoSE (mips32/64 pseudo) classes.

llvm-svn: 161071

single-precision load and store.

Also avoid selecting LUXC1 and SUXC1 instructions during isel. It is incorrect
to map unaligned floating point load/store nodes to these instructions.

llvm-svn: 161063

being used by Mips16 or Micro Mips
2. clean up a few lines too long encountered

Patch by Reed Kotler.

llvm-svn: 158470

instruction encodings can be excluded during mips16 processing.

This revision fixes the issue raised by Jim Grosbach.

bool hasStandardEncoding() const { return !inMips16Mode(); }

When micromips is added it will be

bool StandardEncoding() const { return !inMips16Mode()&&  !inMicroMipsMode(); }

No additional testing is needed other than to assure that there is no regression
from this patch.

Patch by Reed Kotler.

llvm-svn: 157234

Patch by Vladimir Medic. 

llvm-svn: 154935

otherwise expand FNEG during legalization.

llvm-svn: 154546

Invalid operation is signaled if the operand of these instructions is NaN.

llvm-svn: 154545

llvm-svn: 153925

Patch by Vladimir Medic.

llvm-svn: 153924

and stores was added.

- SelectAddr should return false if Parent is an unaligned f32 load or store.
- Only aligned load and store nodes should be matched to select reg+imm
  floating point instructions.
- MIPS does not have support for f64 unaligned load or store instructions.

llvm-svn: 151843

llvm-svn: 151625

load and store instructions.

llvm-svn: 151611

llvm-svn: 151540