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Author SHA1 Message Date
Akira Hatanaka 5705f546e5 [mips] Handle reading, writing or copying of ccond field of DSP control 
register.

- Define pseudo instructions which store or load ccond field of the DSP
  control register.
- Emit the pseudos in MipsSEInstrInfo::storeRegToStack and loadRegFromStack.
- Expand the pseudos before callee-scan save.
- Emit instructions RDDSP or WRDSP to copy between ccond field and GPRs. 

llvm-svn: 180969
 2013-05-02 23:07:05 +00:00
Akira Hatanaka 4254319ef9 [mips] Fix handling of instructions which copy to/from accumulator registers. 
Expand copy instructions between two accumulator registers before callee-saved
scan is done. Handle copies between integer GPR and hi/lo registers in
MipsSEInstrInfo::copyPhysReg. Delete pseudo-copy instructions that are not
needed.

llvm-svn: 180827
 2013-04-30 23:22:09 +00:00