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* [mips] Fix the head Mips16RegisterInfo.cpp commentRichard Sandiford2013-05-021-2/+1
| | | | | | | ...aka a test commit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180936 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Rename class and functions. Simplify code.Akira Hatanaka2013-05-011-26/+29
| | | | | | | | No functionality changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180897 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Fix handling of instructions which copy to/from accumulator registers.Akira Hatanaka2013-04-307-37/+43
| | | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180827 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Instruction selection patterns for DSP-ASE vector select and compareAkira Hatanaka2013-04-305-3/+145
| | | | | | | | instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180820 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Simplify code.Akira Hatanaka2013-04-301-4/+1
| | | | | | | No intended functionality changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180807 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Clear isCommutable bit of instructions which are not commutable.Akira Hatanaka2013-04-301-14/+8
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180801 91177308-0d34-0410-b5e6-96231b3b80d8
* Mips assembler: .set reorder supportJack Carter2013-04-251-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Mips have delayslots for certain instructions like jumps and branches. These are instructions that follow the branch or jump and are executed before the jump or branch is completed. Early Mips compilers could not cope with delayslots and left them up to the assembler. The assembler would fill the delayslots with the appropriate instruction, usually just a nop to allow correct runtime behavior. The default behavior for this is set with .set reorder. To tell the assembler that you don't want it to mess with the delayslot one used .set noreorder. For backwards compatibility we need to support .set reorder and have it be the default behavior in the assembler. Our support for it is to insert a NOP directly after an instruction with a delayslot when in .set reorder mode. Contributer: Vladimir Medic git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180584 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Add definitions of micromips load and store instructions.Akira Hatanaka2013-04-254-17/+43
| | | | | | | | Patch by Zoran Jovanovic. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180241 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Add definitions of micromips shift instructions.Akira Hatanaka2013-04-254-12/+62
| | | | | | | | Patch by Zoran Jovanovic. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180238 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Compare splat value with element size instead of calling isUIntN.Akira Hatanaka2013-04-231-2/+2
| | | | | | | | No intended changes in functionality. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180130 91177308-0d34-0410-b5e6-96231b3b80d8
* 80 columns.Akira Hatanaka2013-04-223-6/+9
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180040 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] In performDSPShiftCombine, check that all elements in the vector areAkira Hatanaka2013-04-222-10/+12
| | | | | | | | | shifted by the same amount and the shift amount is smaller than the element size. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180039 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unused MEMBARRIER DAG node; it's been replaced by ATOMIC_FENCE.Tim Northover2013-04-204-13/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179939 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Instruction selection patterns for DSP-ASE vector shifts.Akira Hatanaka2013-04-194-6/+101
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179906 91177308-0d34-0410-b5e6-96231b3b80d8
* ArrayRefize getMachineNode(). No functionality change.Michael Liao2013-04-192-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179901 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] First patch which adds support for micromips.Akira Hatanaka2013-04-195-35/+190
| | | | | | | | | | This patch adds support for recoded (meaning assembly-language compatible to standard mips32) arithmetic 32-bit instructions. Patch by Zoran Jovanovic. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179873 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Fix InstAlias of XOR and OR macros. Set EmitAlias flag and changeAkira Hatanaka2013-04-191-2/+2
| | | | | | | | | operand type to uimm16. Patch by Vladimir Medic. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179872 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Rename function.Akira Hatanaka2013-04-181-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179741 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] DSP-ASE move from HI/LO register instructions.Akira Hatanaka2013-04-184-8/+99
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179739 91177308-0d34-0410-b5e6-96231b3b80d8
* Mips assembler: formatting and comment changes.Jack Carter2013-04-181-302/+294
| | | | | | | | This patch should not have any functional changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179737 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix -Werror build.Evgeniy Stepanov2013-04-171-0/+2
| | | | | | | Broken in r179657. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179669 91177308-0d34-0410-b5e6-96231b3b80d8
* Mips assembler: Enable handling of nested expressionsJack Carter2013-04-172-133/+237
| | | | | | | | | | | | | This patch allows the Mips assembler to parse and emit nested expressions as instruction operands. It also extends the expansion of memory instructions when an offset is given as an expression. Contributer: Vladimir Medic git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179657 91177308-0d34-0410-b5e6-96231b3b80d8
* Mips assembler: Explicit floating point condition register recognition.Jack Carter2013-04-151-0/+3
| | | | | | | | | | | | | This patch allows the assembler to recognize $fcc0 as a valid register for conditional move instructions. Corresponding test cases have been added. Contributer: Vladimir Medic git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179567 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Move MipsTargetLowering::lowerINTRINSIC_W_CHAIN andAkira Hatanaka2013-04-134-172/+174
| | | | | | | | | lowerINTRINSIC_WO_CHAIN into MipsSETargetLowering. No functionality changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179444 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Reapply r179420 and r179421.Akira Hatanaka2013-04-134-11/+41
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179434 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Override TargetLoweringBase::isShuffleMaskLegal.Akira Hatanaka2013-04-131-0/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179433 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r179420 and r179421.Akira Hatanaka2013-04-124-41/+11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179422 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Instruction selection patterns for carry-setting and using addAkira Hatanaka2013-04-123-6/+15
| | | | | | | | instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179421 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] v4i8 and v2i16 add, sub and mul instruction selection patterns.Akira Hatanaka2013-04-122-5/+26
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179420 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Custom-lower i64 MULHS and MULHU nodes. Remove the code which selectsAkira Hatanaka2013-04-112-64/+4
| | | | | | | | | | multiply instructions in MipsSEDAGToDAGISel. This patch was supposed to be part of r178403. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179314 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Clean up MipsISelDAGToDAG.cpp and MipsISelLowering.cpp.Akira Hatanaka2013-04-113-13/+12
| | | | | | | | | | | - Rename function. - Pass iterator by value. - Remove header include. No functionality changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179312 91177308-0d34-0410-b5e6-96231b3b80d8
* This is for an experimental option -mips-os16. The idea is to compile allReed Kotler2013-04-106-1/+185
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Mips32 code as Mips16 unless it can't be compiled as Mips 16. For now this would happen as long as floating point instructions are not needed. Probably it would also make sense to compile as mips32 if atomic operations are needed too. There may be other cases too. A module pass prescans the IR and adds the mips16 or nomips16 attribute to functions depending on the functions needs. Mips 16 mode can result in a 40% code compression by utililizing 16 bit encoding of many instructions. The hope is for this to replace the traditional gcc way of dealing with Mips16 code using floating point which involves essentially using soft float but with a library implemented using mips32 floating point. This gcc method also requires creating stubs so that Mips32 code can interact with these Mips 16 functions that have floating point needs. My conjecture is that in reality this traditional gcc method would never win over this new method. I will be implementing the traditional gcc method also. Some of it is already done but I needed to do the stubs to finish the work and those required this mips16/32 mixed mode capability. I have more ideas for to make this new method much better and I think the old method will just live in llvm for anyone that needs the backward compatibility but I don't for what reason that would be needed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179185 91177308-0d34-0410-b5e6-96231b3b80d8
* Mips specific inline asm operand modifier 'D' Jack Carter2013-04-091-3/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Modifier 'D' is to use the second word of a double integer. We had previously implemented the pure register varient of the modifier and this patch implements the memory reference. #include "stdio.h" int b[8] = {0,1,2,3,4,5,6,7}; void main() { int i; // The first word. Notice, no 'D' {asm ( "lw %0,%1;" : "=r" (i) : "m" (*(b+4)) );} printf("%d\n",i); // The second word {asm ( "lw %0,%D1;" : "=r" (i) : "m" (*(b+4)) );} printf("%d\n",i); } git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179135 91177308-0d34-0410-b5e6-96231b3b80d8
* This patch enables llvm to switch between compiling for mips32/mips64 Reed Kotler2013-04-0915-11/+333
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | and mips16 on a per function basis. Because this patch is somewhat involved I have provide an overview of the key pieces of it. The patch is written so as to not change the behavior of the non mixed mode. We have tested this a lot but it is something new to switch subtargets so we don't want any chance of regression in the mainline compiler until we have more confidence in this. Mips32/64 are very different from Mip16 as is the case of ARM vs Thumb1. For that reason there are derived versions of the register info, frame info, instruction info and instruction selection classes. Now we register three separate passes for instruction selection. One which is used to switch subtargets (MipsModuleISelDAGToDAG.cpp) and then one for each of the current subtargets (Mips16ISelDAGToDAG.cpp and MipsSEISelDAGToDAG.cpp). When the ModuleISel pass runs, it determines if there is a need to switch subtargets and if so, the owning pointers in MipsTargetMachine are appropriately changed. When 16Isel or SEIsel is run, they will return immediately without doing any work if the current subtarget mode does not apply to them. In addition, MipsAsmPrinter needs to be reset on a function basis. The pass BasicTargetTransformInfo is substituted with a null pass since the pass is immutable and really needs to be a function pass for it to be used with changing subtargets. This will be fixed in a follow on patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179118 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Small update to the implementation of eh.return for Mips.Akira Hatanaka2013-04-021-0/+4
| | | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178588 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Expand pseudo multiply/divide instructions in MipsCodeEmitter.cpp.Akira Hatanaka2013-04-021-0/+36
| | | | | | | | | | | This patch fixes the following two tests which have been failing on llvm-mips-linux builder since r178403: LLVM :: Analysis/Profiling/load-branch-weights-ifs.ll LLVM :: Analysis/Profiling/load-branch-weights-loops.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178584 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Add patterns for DSP indexed load instructions.Akira Hatanaka2013-03-302-13/+42
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178408 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Define reg+imm load/store pattern templates.Akira Hatanaka2013-03-302-16/+18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178407 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Fix DSP instructions to have explicit accumulator register operands.Akira Hatanaka2013-03-303-236/+192
| | | | | | | | Check that instruction selection can select multiply-add/sub DSP instructions from a pattern that doesn't have intrinsics. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178406 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unused variables.Akira Hatanaka2013-03-301-2/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178405 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Move the code which does dag-combine for multiply-add/sub nodes toAkira Hatanaka2013-03-303-186/+199
| | | | | | | | | | derived class MipsSETargetLowering. We shouldn't be generating madd/msub nodes if target is Mips16, since Mips16 doesn't have support for multipy-add/sub instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178404 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Fix definitions of multiply, multiply-add/sub and divide instructions.Akira Hatanaka2013-03-307-70/+199
| | | | | | | | | | The new instructions have explicit register output operands and use table-gen patterns instead of C++ code to do instruction selection. Mips16's instructions are unaffected by this change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178403 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Remove function getFPBranchCodeFromCond. Rename invertFPCondCodeAdd.Akira Hatanaka2013-03-301-18/+7
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178396 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix indentation.Akira Hatanaka2013-03-301-26/+26
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178395 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Add mips-specific nodes which will be used to select multiply and divideAkira Hatanaka2013-03-302-0/+18
| | | | | | | instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178394 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Implement getRepRegClassFor in MipsSETargetLowering. This function isAkira Hatanaka2013-03-301-0/+9
| | | | | | | called in several places in ScheduleDAGRRList.cpp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178393 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Fix MipsSEInstrInfo::copyPhysReg, loadRegFromStack and storeRegToStackAkira Hatanaka2013-03-301-0/+18
| | | | | | | to handle accumulator registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178392 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Expand pseudo load, store and copy instructions right beforeAkira Hatanaka2013-03-301-1/+165
| | | | | | | | | | callee-saved scan. The code makes use of register's scavenger's capability to spill multiple registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178391 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Define pseudo instructions for spilling and copying accumulatorAkira Hatanaka2013-03-303-0/+26
| | | | | | | registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178390 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Define a function which returns the GPR register class.Akira Hatanaka2013-03-295-0/+22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178359 91177308-0d34-0410-b5e6-96231b3b80d8
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