Commit Graph

17 Commits

Author SHA1 Message Date
Akira Hatanaka 9edae02db8 [mips] Add option -mno-ldc1-sdc1.
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
2013-05-13 18:23:35 +00:00
Akira Hatanaka 067d8152f0 [mips] Rename functions. No functionality changes.
llvm-svn: 181713
2013-05-13 17:43:19 +00:00
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
Akira Hatanaka 023c678a0d [mips] Small update to the implementation of eh.return for Mips.
This patch initializes t9 to the handler address, but only if the relocation
model is pic. This handles the case where handler to which eh.return jumps 
points to the start of the function.

Patch by Sasa Stankovic.

llvm-svn: 178588
2013-04-02 23:02:07 +00:00
Akira Hatanaka cd77e15cfb [mips] Fix MipsSEInstrInfo::copyPhysReg, loadRegFromStack and storeRegToStack
to handle accumulator registers.

llvm-svn: 178392
2013-03-30 01:08:05 +00:00
Akira Hatanaka 465faccafa [mips] Define overloaded versions of storeRegToStack and loadRegFromStack.
No functionality changes.

llvm-svn: 178327
2013-03-29 02:14:12 +00:00
Akira Hatanaka c0b020690b [mips] Lower EH_RETURN.
Patch by Sasa Stankovic.

llvm-svn: 173862
2013-01-30 00:26:49 +00:00
Akira Hatanaka f423672117 [mips] Use "or $r0, $r1, $zero" instead of "addu $r0, $zero, $r1" to copy
physical register $r1 to $r0.

GNU disassembler recognizes an "or" instruction as a "move", and this change
makes the disassembled code easier to read.

Original patch by Reed Kotler.

llvm-svn: 170655
2012-12-20 04:06:06 +00:00
Chandler Carruth ed0881b2a6 Use the new script to sort the includes of every file under lib.
Sooooo many of these had incorrect or strange main module includes.
I have manually inspected all of these, and fixed the main module
include to be the nearest plausible thing I could find. If you own or
care about any of these source files, I encourage you to take some time
and check that these edits were sensible. I can't have broken anything
(I strictly added headers, and reordered them, never removed), but they
may not be the headers you'd really like to identify as containing the
API being implemented.

Many forward declarations and missing includes were added to a header
files to allow them to parse cleanly when included first. The main
module rule does in fact have its merits. =]

llvm-svn: 169131
2012-12-03 16:50:05 +00:00
Akira Hatanaka 5852e3b800 [mips] Stop reserving register AT and use register scavenger when a scratch
register is needed.

llvm-svn: 167341
2012-11-03 00:05:43 +00:00
Akira Hatanaka 0dfbf1262b [mips] Delete MipsFunctionInfo::EmitNOAT. Unconditionally print directive
"set .noat" so that the assembler doesn't issue warnings when register $AT is
used.

llvm-svn: 167310
2012-11-02 20:56:25 +00:00
Akira Hatanaka bf493942b0 Make function loadImmediate a member of MipsSEInstrInfo and change it to return
the temporary register that was used to load the immediate. Currently, it always
returns register $at, but this will change if, in the future, we decide to use 
another register.

No changes in functionality.

llvm-svn: 162417
2012-08-23 00:21:05 +00:00
Akira Hatanaka fab8929459 Move the code that creates instances of MipsInstrInfo and MipsFrameLowering out
of MipsTargetMachine.cpp.

llvm-svn: 161191
2012-08-02 18:21:47 +00:00
Akira Hatanaka 88d76cfd7a Implement MipsSERegisterInfo::eliminateCallFramePseudoInstr. The function emits
instructions that decrement and increment the stack pointer before and after a
call when the function does not have a reserved call frame.

llvm-svn: 161093
2012-07-31 23:52:55 +00:00
Akira Hatanaka cb37e13fa7 Add definitions of two subclasses of MipsRegisterInfo, Mips16RegisterInfo and
MipsSERegisterInfo.

llvm-svn: 161092
2012-07-31 23:41:32 +00:00
Akira Hatanaka b7fa3c9db0 Add definitions of two subclasses of MipsInstrInfo, MipsInstrInfo (for mips16),
and MipsSEInstrInfo (for mips32/64).

llvm-svn: 161081
2012-07-31 21:49:49 +00:00