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74bfe21b50
doing global variable classification anymore) and hookized, sink almost all target targets global variable emission code into AsmPrinter and out of each target. Some notes: 1. PIC16 does completely custom and crazy stuff, so it is not changed. 2. XCore has some custom handling for extra directives. I'll look at it next. 3. This switches linux/ppc to use .globl instead of .global. If .globl is actually wrong, let me know and I'll fix it. 4. This makes linux/ppc get a lot of random cases right which were obviously wrong before, it is probably now a bit healthier. 5. Blackfin will probably start getting .comm and other things that it didn't before. If this is undesirable, it should explicitly opt out of these things by clearing the relevant fields of MCAsmInfo. This leads to a nice diffstat: 14 files changed, 127 insertions(+), 830 deletions(-) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93858 91177308-0d34-0410-b5e6-96231b3b80d8 |
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|---|---|---|
| .. | ||
| AsmPrinter | ||
| TargetInfo | ||
| CellSDKIntrinsics.td | ||
| CMakeLists.txt | ||
| Makefile | ||
| README.txt | ||
| SPU64InstrInfo.td | ||
| SPU128InstrInfo.td | ||
| SPU.h | ||
| SPU.td | ||
| SPUCallingConv.td | ||
| SPUFrameInfo.cpp | ||
| SPUFrameInfo.h | ||
| SPUHazardRecognizers.cpp | ||
| SPUHazardRecognizers.h | ||
| SPUInstrBuilder.h | ||
| SPUInstrFormats.td | ||
| SPUInstrInfo.cpp | ||
| SPUInstrInfo.h | ||
| SPUInstrInfo.td | ||
| SPUISelDAGToDAG.cpp | ||
| SPUISelLowering.cpp | ||
| SPUISelLowering.h | ||
| SPUMachineFunction.h | ||
| SPUMathInstr.td | ||
| SPUMCAsmInfo.cpp | ||
| SPUMCAsmInfo.h | ||
| SPUNodes.td | ||
| SPUOperands.td | ||
| SPURegisterInfo.cpp | ||
| SPURegisterInfo.h | ||
| SPURegisterInfo.td | ||
| SPURegisterNames.h | ||
| SPUSchedule.td | ||
| SPUSubtarget.cpp | ||
| SPUSubtarget.h | ||
| SPUTargetMachine.cpp | ||
| SPUTargetMachine.h | ||
//===- README.txt - Notes for improving CellSPU-specific code gen ---------===//
This code was contributed by a team from the Computer Systems Research
Department in The Aerospace Corporation:
- Scott Michel (head bottle washer and much of the non-floating point
instructions)
- Mark Thomas (floating point instructions)
- Michael AuYeung (intrinsics)
- Chandler Carruth (LLVM expertise)
- Nehal Desai (debugging, i32 operations, RoadRunner SPU expertise)
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NONINFRINGEMENT, OR
OTHERWISE. IN NO EVENT SHALL THE AEROSPACE CORPORATION BE LIABLE FOR DAMAGES
OF ANY KIND OR NATURE WHETHER BASED IN CONTRACT, TORT, OR OTHERWISE ARISING
OUT OF OR IN CONNECTION WITH THE USE OF THE SOFTWARE INCLUDING, WITHOUT
LIMITATION, DAMAGES RESULTING FROM LOST OR CONTAMINATED DATA, LOST PROFITS OR
REVENUE, COMPUTER MALFUNCTION, OR FOR ANY SPECIAL, INCIDENTAL, CONSEQUENTIAL,
OR PUNITIVE DAMAGES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR
SUCH DAMAGES ARE FORESEEABLE.
---------------------------------------------------------------------------
--WARNING--:
--WARNING--: The CellSPU work is work-in-progress and "alpha" quality code.
--WARNING--:
If you are brave enough to try this code or help to hack on it, be sure
to add 'spu' to configure's --enable-targets option, e.g.:
./configure <your_configure_flags_here> \
--enable-targets=x86,x86_64,powerpc,spu
---------------------------------------------------------------------------
TODO:
* Create a machine pass for performing dual-pipeline scheduling specifically
for CellSPU, and insert branch prediction instructions as needed.
* i32 instructions:
* i32 division (work-in-progress)
* i64 support (see i64operations.c test harness):
* shifts and comparison operators: done
* sign and zero extension: done
* addition: done
* subtraction: needed
* multiplication: done
* i128 support:
* zero extension, any extension: done
* sign extension: needed
* arithmetic operators (add, sub, mul, div): needed
* logical operations (and, or, shl, srl, sra, xor, nor, nand): needed
* or: done
* f64 support
* Comparison operators:
SETOEQ unimplemented
SETOGT unimplemented
SETOGE unimplemented
SETOLT unimplemented
SETOLE unimplemented
SETONE unimplemented
SETO done (lowered)
SETUO done (lowered)
SETUEQ unimplemented
SETUGT unimplemented
SETUGE unimplemented
SETULT unimplemented
SETULE unimplemented
SETUNE unimplemented
* LLVM vector suport
* VSETCC needs to be implemented. It's pretty straightforward to code, but
needs implementation.
* Intrinsics
* spu.h instrinsics added but not tested. Need to have an operational
llvm-spu-gcc in order to write a unit test harness.
===-------------------------------------------------------------------------===