llvm-6502/lib/Target/Sparc
Torok Edwin c25e7581b9 assert(0) -> LLVM_UNREACHABLE.
Make llvm_unreachable take an optional string, thus moving the cerr<< out of
line.
LLVM_UNREACHABLE is now a simple wrapper that makes the message go away for
NDEBUG builds.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75379 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-11 20:10:48 +00:00
..
AsmPrinter Implement changes from Chris's feedback. 2009-07-08 20:53:28 +00:00
CMakeLists.txt CMake build fixes, from Xerxes Ranby 2009-07-02 18:53:52 +00:00
DelaySlotFiller.cpp Remove non-DebugLoc versions of buildMI from Sparc. 2009-02-13 02:31:35 +00:00
FPMover.cpp assert(0) -> LLVM_UNREACHABLE. 2009-07-11 20:10:48 +00:00
Makefile Removed trailing whitespace from Makefiles. 2009-01-09 16:44:42 +00:00
README.txt
Sparc.h assert(0) -> LLVM_UNREACHABLE. 2009-07-11 20:10:48 +00:00
Sparc.td Move target independent td files from lib/Target/ to include/llvm/Target so they can be distributed along with the header files. 2008-11-24 07:34:46 +00:00
SparcCallingConv.td
SparcInstrFormats.td
SparcInstrInfo.cpp assert(0) -> LLVM_UNREACHABLE. 2009-07-11 20:10:48 +00:00
SparcInstrInfo.h Change TargetInstrInfo::isMoveInstr to return source and destination sub-register indices as well. 2009-01-20 19:12:24 +00:00
SparcInstrInfo.td
SparcISelDAGToDAG.cpp Implement changes from Chris's feedback. 2009-07-08 20:53:28 +00:00
SparcISelLowering.cpp assert(0) -> LLVM_UNREACHABLE. 2009-07-11 20:10:48 +00:00
SparcISelLowering.h Update comments to make it clear that the function alignment is the Log2 of the 2009-07-01 18:50:55 +00:00
SparcRegisterInfo.cpp assert(0) -> LLVM_UNREACHABLE. 2009-07-11 20:10:48 +00:00
SparcRegisterInfo.h
SparcRegisterInfo.td
SparcSubtarget.cpp
SparcSubtarget.h Propagate CPU string out of SubtargetFeatures 2009-05-23 19:50:50 +00:00
SparcTargetAsmInfo.cpp
SparcTargetAsmInfo.h
SparcTargetMachine.cpp Remove unused AsmPrinter OptLevel argument, and propogate. 2009-07-01 01:48:54 +00:00
SparcTargetMachine.h Remove unused AsmPrinter OptLevel argument, and propogate. 2009-07-01 01:48:54 +00:00

To-do
-----

* Keep the address of the constant pool in a register instead of forming its
  address all of the time.
* We can fold small constant offsets into the %hi/%lo references to constant
  pool addresses as well.
* When in V9 mode, register allocate %icc[0-3].
* Add support for isel'ing UMUL_LOHI instead of marking it as Expand.
* Emit the 'Branch on Integer Register with Prediction' instructions.  It's
  not clear how to write a pattern for this though:

float %t1(int %a, int* %p) {
        %C = seteq int %a, 0
        br bool %C, label %T, label %F
T:
        store int 123, int* %p
        br label %F
F:
        ret float undef
}

codegens to this:

t1:
        save -96, %o6, %o6
1)      subcc %i0, 0, %l0
1)      bne .LBBt1_2    ! F
        nop
.LBBt1_1:       ! T
        or %g0, 123, %l0
        st %l0, [%i1]
.LBBt1_2:       ! F
        restore %g0, %g0, %g0
        retl
        nop

1) should be replaced with a brz in V9 mode.

* Same as above, but emit conditional move on register zero (p192) in V9 
  mode.  Testcase:

int %t1(int %a, int %b) {
        %C = seteq int %a, 0
        %D = select bool %C, int %a, int %b
        ret int %D
}

* Emit MULX/[SU]DIVX instructions in V9 mode instead of fiddling 
  with the Y register, if they are faster.

* Codegen bswap(load)/store(bswap) -> load/store ASI

* Implement frame pointer elimination, e.g. eliminate save/restore for 
  leaf fns.
* Fill delay slots