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* Mark the PPC CTRRC and CTRRC8 register classes as non-allocatable.Hal Finkel2012-06-081-2/+10
| | | | | | | | | | | Marking these classes as non-alocatable allows CTR loop generation to work correctly with the block placement passes, etc. These register classes are currently used only by some unused TCRETURN patterns. In future cleanup, these will be removed. Thanks again to Jakob for suggesting this fix to the CTR loop problem! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158221 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove the SubRegClasses field from RegisterClass descriptions.Jakob Stoklund Olesen2012-05-041-3/+1
| | | | | | This information in now computed by TableGen. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156152 91177308-0d34-0410-b5e6-96231b3b80d8
* Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, ↵Jia Liu2012-02-181-3/+3
| | | | | | MSP430, PPC, PTX, Sparc, X86, XCore. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150878 91177308-0d34-0410-b5e6-96231b3b80d8
* Use set operations instead of plain lists to enumerate register classes.Jakob Stoklund Olesen2011-06-151-33/+26
| | | | | | | | | | | | This simplifies many of the target description files since it is common for register classes to be related or contain sequences of numbered registers. I have verified that this doesn't change the files generated by TableGen for ARM and X86. It alters the allocation order of MBlaze GPR and Mips FGR32 registers, but I believe the change is benign. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133105 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove custom allocation order boilerplate that is no longer needed.Jakob Stoklund Olesen2011-06-091-59/+3
| | | | | | | | | | | | | | | | | | | | The register allocators automatically filter out reserved registers and place the callee saved registers last in the allocation order, so custom methods are no longer necessary just for that. Some targets still use custom allocation orders: ARM/Thumb: The high registers are removed from GPR in thumb mode. The NEON allocation orders prefer to use non-VFP2 registers first. X86: The GR8 classes omit AH-DH in x86-64 mode to avoid REX trouble. SystemZ: Some of the allocation orders are omitting R12 aliases without explanation. I don't understand this target well enough to fix that. It looks like all the boilerplate could be removed by reserving the right registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132781 91177308-0d34-0410-b5e6-96231b3b80d8
* Split ppc dwarf regnums into ppc64 and ppc32 flavours.Rafael Espindola2011-05-301-140/+140
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132315 91177308-0d34-0410-b5e6-96231b3b80d8
* Dwarf register 0 is r0, remove incorrect entries.Rafael Espindola2011-05-291-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132276 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove DwarfRegNum from the individual bits of the condition register.Rafael Espindola2011-05-271-32/+32
| | | | | | These should be DW_OP_bit_piece of CR (64). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132192 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix some dwarf register numbers.Rafael Espindola2011-05-261-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132136 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename TargetFrameInfo into TargetFrameLowering. Also, put couple of FIXMEs ↵Anton Korobeynikov2011-01-101-4/+4
| | | | | | and fixes here and there. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123170 91177308-0d34-0410-b5e6-96231b3b80d8
* Restore the behavior of frame lowering before my refactoring.Anton Korobeynikov2010-12-181-4/+6
| | | | | | | | | It turns out that ppc backend has really weird interdependencies over different hooks and all stuff is fragile wrt small changes. This should fix PR8749 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122155 91177308-0d34-0410-b5e6-96231b3b80d8
* Move hasFP() and few related hooks to TargetFrameInfo.Anton Korobeynikov2010-11-181-5/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119740 91177308-0d34-0410-b5e6-96231b3b80d8
* Replace the SubRegSet tablegen class with a less error-prone mechanism.Jakob Stoklund Olesen2010-05-261-19/+11
| | | | | | | | | | | | | | | | A Register with subregisters must also provide SubRegIndices for adressing the subregisters. TableGen automatically inherits indices for sub-subregisters to minimize typing. CompositeIndices may be specified for the weirder cases such as the XMM sub_sd index that returns the same register, and ARM NEON Q registers where both D subregs have ssub_0 and ssub_1 sub-subregs. It is now required that all subregisters are named by an index, and a future patch will also require inherited subregisters to be named. This is necessary to allow composite subregister indices to be reduced to a single index. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104704 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "Replace the SubRegSet tablegen class with a less error-prone mechanism."Jakob Stoklund Olesen2010-05-261-11/+19
| | | | | | This reverts commit 104654. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104660 91177308-0d34-0410-b5e6-96231b3b80d8
* Replace the SubRegSet tablegen class with a less error-prone mechanism.Jakob Stoklund Olesen2010-05-261-19/+11
| | | | | | | | | | | | | | | | A Register with subregisters must also provide SubRegIndices for adressing the subregisters. TableGen automatically inherits indices for sub-subregisters to minimize typing. CompositeIndices may be specified for the weirder cases such as the XMM sub_sd index that returns the same register, and ARM NEON Q registers where both D subregs have ssub_0 and ssub_1 sub-subregs. It is now required that all subregisters are named by an index, and a future patch will also require inherited subregisters to be named. This is necessary to allow composite subregister indices to be reduced to a single index. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104654 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove NumberHack entirely.Jakob Stoklund Olesen2010-05-251-4/+4
| | | | | | | SubRegIndex instances are now numbered uniquely the same way Register instances are - in lexicographical order by name. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104627 91177308-0d34-0410-b5e6-96231b3b80d8
* Switch SubRegSet to using symbolic SubRegIndicesJakob Stoklund Olesen2010-05-241-8/+12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104571 91177308-0d34-0410-b5e6-96231b3b80d8
* Replace the tablegen RegisterClass field SubRegClassList with an alist-like dataJakob Stoklund Olesen2010-05-241-1/+1
| | | | | | | | | | | structure that represents a mapping without any dependencies on SubRegIndex numbering. This brings us closer to being able to remove the explicit SubRegIndex numbering, and it is now possible to specify any mapping without inventing *_INVALID register classes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104563 91177308-0d34-0410-b5e6-96231b3b80d8
* Add SubRegIndex defs to PowerPC. It looks like the CR subregister indices areJakob Stoklund Olesen2010-05-241-0/+7
| | | | | | never used. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104517 91177308-0d34-0410-b5e6-96231b3b80d8
* Really reserve R2 on PPC Darwin. PR 6314.Dale Johannesen2010-02-161-8/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96399 91177308-0d34-0410-b5e6-96231b3b80d8
* Model the carry bit on ppc32. Without this we couldDale Johannesen2009-09-181-0/+8
| | | | | | | | | move a SUBFC (etc.) below the SUBFE (etc.) that consumed the carry bit. Add missing ADDIC8, noticed along the way. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82266 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support for the PowerPC 64-bit SVR4 ABI.Tilmann Scheller2009-08-151-3/+7
| | | | | | | | | | | | | | | | | | The Link Register is volatile when using the 32-bit SVR4 ABI. Make it possible to use the 64-bit SVR4 ABI. Add non-volatile registers for the 64-bit SVR4 ABI. Make sure r2 is a reserved register when using the 64-bit SVR4 ABI. Update PPCFrameInfo for the 64-bit SVR4 ABI. Add FIXME for 64-bit Darwin PPC. Insert NOP instruction after direct function calls. Emit official procedure descriptors. Create TOC entries for GlobalAddress references. Spill 64-bit non-volatile registers to the correct slots. Only custom lower VAARG when using the 32-bit SVR4 ABI. Use simple VASTART lowering for the 64-bit SVR4 ABI. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79091 91177308-0d34-0410-b5e6-96231b3b80d8
* Various small changes related to the Condition Register on PowerPC.Tilmann Scheller2009-07-031-14/+17
| | | | | | | | | Don't spill to the CR save area when using the SVR4 ABI for now. Don't rely on constants assigned for registers to be in order (they aren't assigned in order). Make sure CR bits are mapped to the corresponding CR field. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74767 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor ABI code in the PowerPC backend.Tilmann Scheller2009-07-031-1/+1
| | | | | | | | | | | | Make CalculateParameterAndLinkageAreaSize() Darwin-specific. Remove SVR4 specific code from LowerCALL_Darwin() and LowerFORMAL_ARGUMENTS_Darwin(). Rename MachoABI to DarwinABI for consistency. Rename ELF ABI to SVR4 ABI for consistency. Factor out common call return lowering between the Darwin and SVR4 ABI. Factor out common call lowering between the Darwin and SVR4 ABI. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74766 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement the SVR4 ABI for PowerPC.Tilmann Scheller2009-07-031-9/+21
| | | | | | | | | | | | | | | | | | | | | | | | | Implement LowerFORMAL_ARGUMENTS_SVR4(). Implement LowerCALL_SVR4(). Add support for split arguments. Implement by value parameter passing for aggregates. Add support for variable argument lists. Create the spill area for argument registers of variable argument functions no longer at a fixed offset. Make sure callee saved registers are spilled to the correct stack offsets. Change allocation order of non-volatile floating-point registers. Add VRSAVE to the list of callee-saved registers, add CallConvLowering for vararg calls. Add support for variable argument calls with Vector arguments. Add support for VR and VRSAVE save area, improve allocation order for non-volatile vector registers. Stop creating illegal i8 values in LowerVASTART(). Add memory access width hints. Make sure to reserve space on the stack for the frame pointer. When using the SVR4 ABI, reserve r13 for the Small Data Area pointer. Assure that the frame pointer is spilled to the correct location on the stack. Some FP registers were not marked as volatile. Make sure the i64 words from a long double are passed either both in registers or both on the stack. Only put integer arguments in registers which are not marked with the inreg flag. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74765 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a RM pseudoreg for the rounding mode, whichDale Johannesen2008-10-291-0/+10
| | | | | | | | | | | | | | | | | | | allows ppcf128->int conversion to work with DeadInstructionElimination. This is now turned off but RM is harmless. It does not do a complete job of modeling the rounding mode. Revert marking MFCR as using all 7 CR subregisters; while correct, this caused the problem in PR 2964, plus the local RA crash noted in the comments. This was needed to make DeadInstructionElimination, but as we are not running that, it is backed out for now. Eventually it should go back in and the other problems fixed where they're broken. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58391 91177308-0d34-0410-b5e6-96231b3b80d8
* Clean up PPC register specification.Evan Cheng2008-07-071-34/+33
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53209 91177308-0d34-0410-b5e6-96231b3b80d8
* Tail call optimization improvements:Arnold Schwaighofer2008-04-301-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Move platform independent code (lowering of possibly overwritten arguments, check for tail call optimization eligibility) from target X86ISelectionLowering.cpp to TargetLowering.h and SelectionDAGISel.cpp. Initial PowerPC tail call implementation: Support ppc32 implemented and tested (passes my tests and test-suite llvm-test). Support ppc64 implemented and half tested (passes my tests). On ppc tail call optimization is performed if caller and callee are fastcc call is a tail call (in tail call position, call followed by ret) no variable argument lists or byval arguments option -tailcallopt is enabled Supported: * non pic tail calls on linux/darwin * module-local tail calls on linux(PIC/GOT)/darwin(PIC) * inter-module tail calls on darwin(PIC) If constraints are not met a normal call will be emitted. A test checking the argument lowering behaviour on x86-64 was added. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50477 91177308-0d34-0410-b5e6-96231b3b80d8
* Add description of individual bits in CR. This fix PR1765.Nicolas Geoffray2008-03-101-0/+15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48143 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename PrintableName to Name.Bill Wendling2008-02-261-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47629 91177308-0d34-0410-b5e6-96231b3b80d8
* Change "Name" to "AsmName" in the target register info. Gee, a refactoring toolBill Wendling2008-02-261-1/+1
| | | | | | | would have been a Godsend here! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47625 91177308-0d34-0410-b5e6-96231b3b80d8
* Some platforms use the same name for 32-bit and 64-bit registers (likeBill Wendling2008-02-241-34/+35
| | | | | | | | | | %r3 on PPC) in their ASM files. However, it's hard for humans to read during debugging. Adding a new field to the register data that lets you specify a different name to be printed than the one that goes into the ASM file -- %x3 instead of %r3, for instance. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47534 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove attribution from file headers, per discussion on llvmdev.Chris Lattner2007-12-291-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
* Use TableGen to emit information for dwarf register numbers. Anton Korobeynikov2007-11-111-173/+173
| | | | | | | | | This makes DwarfRegNum to accept list of numbers instead. Added three different "flavours", but only slightly tested on x86-32/linux. Please check another subtargets if possible, git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43997 91177308-0d34-0410-b5e6-96231b3b80d8
* R0 is a sub-register of X0, etc.Evan Cheng2007-05-081-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36939 91177308-0d34-0410-b5e6-96231b3b80d8
* llvm bug #1350, parts 1, 2, and 3.Nate Begeman2007-05-011-1/+50
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36618 91177308-0d34-0410-b5e6-96231b3b80d8
* We'd still like to register allocate r2 on darwin before the callee-saveNate Begeman2007-01-291-6/+6
| | | | | | | regs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33635 91177308-0d34-0410-b5e6-96231b3b80d8
* Changes from Nick Lewycky with a simplified PPCTargetAsmInfo.Jim Laskey2006-12-211-2/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32735 91177308-0d34-0410-b5e6-96231b3b80d8
* in ppc64-mode, don't allocate the 32-bit version of r13 either.Chris Lattner2006-11-201-0/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31884 91177308-0d34-0410-b5e6-96231b3b80d8
* r13 is the thread pointer on darwin/ppc64, don't allocate it.Chris Lattner2006-11-201-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31882 91177308-0d34-0410-b5e6-96231b3b80d8
* This is a general clean up of the PowerPC ABI. Address several problems andJim Laskey2006-11-161-2/+2
| | | | | | | | | | bugs including making sure that the TOS links back to the previous frame, that the maximum call frame size is not included twice when using frame pointers, no longer growing the frame on calls, double storing of SP and a cleaner/faster dynamic alloca. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31792 91177308-0d34-0410-b5e6-96231b3b80d8
* Rework PPC64 calls. Now we have a LR8/CTR8 register which the PPC64 callsChris Lattner2006-11-141-4/+9
| | | | | | | | | clobber. This allows LR8 to be save/restored correctly as a 64-bit quantity, instead of handling it as a 32-bit quantity. This unbreaks ppc64 codegen when the code is actually located above the 4G boundary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31734 91177308-0d34-0410-b5e6-96231b3b80d8
* Constify some methods. Patch provided by Anton Vayvod, thanks!Chris Lattner2006-08-171-8/+8
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29756 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove the -darwin and -aix llc options, inferring darwinism and aixism fromChris Lattner2006-06-161-2/+2
| | | | | | | the target triple & subtarget info. woo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28835 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert Nate's CR patch from last night, which caused many regressions (e.g. ↵Chris Lattner2006-05-041-18/+3
| | | | | | | | | | fhourstones). Loading and storing off R0 isn't what we wanted. Also, taking some CR's out of CRRC seems to cause failures as well. Further investigation is required. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28097 91177308-0d34-0410-b5e6-96231b3b80d8
* Since we don't handle callee-save CRs right yet, don't allocate them. AlsoNate Begeman2006-05-021-3/+18
| | | | | | | don't step on R11 in the middle of a function when saving and restoring CRs git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28058 91177308-0d34-0410-b5e6-96231b3b80d8
* Prefer to allocate V2-V5 before V0,V1. This lets us generate code like this:Chris Lattner2006-04-171-1/+1
| | | | | | | | | | | | | | | vspltisw v2, -12 vrlw v2, v2, v2 instead of: vspltisw v0, -12 vrlw v2, v0, v0 when a function is returning a value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27771 91177308-0d34-0410-b5e6-96231b3b80d8
* add all supported formats to the vector register fileChris Lattner2006-03-251-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27115 91177308-0d34-0410-b5e6-96231b3b80d8
* Add dwarf register numbering to register data.Jim Laskey2006-03-241-71/+140
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27081 91177308-0d34-0410-b5e6-96231b3b80d8
* Claim to have v16i8 for perm masksChris Lattner2006-03-201-1/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26886 91177308-0d34-0410-b5e6-96231b3b80d8
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