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path: root/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
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* Update the load-store optimizer for changes to the operands on LDR_PRE_IMM ↵Owen Anderson2011-08-29
| | | | | | and LDRB_PRE_IMM in r138653. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138746 91177308-0d34-0410-b5e6-96231b3b80d8
* invalid-LDR_PRE-arm.txt was already passing, but for the wrong reasons. We ↵Owen Anderson2011-08-26
| | | | | | were failing to specify enough fixed bits of LDR_PRE/LDRB_PRE, resulting in decoding conflicts. Separate them into immediate vs. register versions, allowing us to specify the necessary fixed bits. This in turn results in the test being decoded properly, and being rejected as UNPREDICTABLE rather than a hard failure. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138653 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM STR_POST_IMM offset encoding fix in load/store optimizer.Jim Grosbach2011-08-12
| | | | | | | | | | Tidy up the code a bit and push the definition of the value next to the uses to try to minimize this sort of issue from arising again while I'm at it. rdar://9945172 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137525 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM refactor indexed store instructions.Jim Grosbach2011-08-05
| | | | | | | | | | | Refactor STR[B] pre and post indexed instructions to use addressing modes for memory operands, which is necessary for assembly parsing and is more consistent with the rest of the memory instruction definitions. Make some incremental progress on refactoring away the mega-operand addrmode2 along the way, which is nice. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136978 91177308-0d34-0410-b5e6-96231b3b80d8
* Split am2offset into register addend and immediate addend forms, necessary ↵Owen Anderson2011-07-26
| | | | | | for allowing the fixed-length disassembler to distinguish between SBFX and STR_PRE. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136141 91177308-0d34-0410-b5e6-96231b3b80d8
* Sink ARMMCExpr and ARMAddressingModes into MC layer. First step to separate ↵Evan Cheng2011-07-20
| | | | | | ARM MC code from target. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135636 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove redundant Thumb2 ADD/SUB SP instruction definitions.Jim Grosbach2011-06-29
| | | | | | | | | | | | Unlike Thumb1, Thumb2 does not have dedicated encodings for adjusting the stack pointer. It can just use the normal add-register-immediate encoding since it can use all registers as a source, not just R0-R7. The extra instruction definitions are just duplicates of the normal instructions with the (not well enforced) constraint that the source register was SP. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134114 91177308-0d34-0410-b5e6-96231b3b80d8
* - Rename TargetInstrDesc, TargetOperandInfo to MCInstrDesc and MCOperandInfo andEvan Cheng2011-06-28
| | | | | | | | | sink them into MC layer. - Added MCInstrInfo, which captures the tablegen generated static data. Chang TargetInstrInfo so it's based off MCInstrInfo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134021 91177308-0d34-0410-b5e6-96231b3b80d8
* More refactoring. Move getRegClass from TargetOperandInfo to TargetInstrInfo.Evan Cheng2011-06-27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133944 91177308-0d34-0410-b5e6-96231b3b80d8
* Clean up comment a bit.Eric Christopher2011-05-25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132083 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix more of PR8825. Now all of CodeGen/ARM passes with VerifyCoalescing ↵Cameron Zwarich2011-05-18
| | | | | | turned on. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131578 91177308-0d34-0410-b5e6-96231b3b80d8
* use the MachineInstrBuilder operator-> to simplify some code.Chris Lattner2011-04-29
| | | | | | | There are probably more instances of this floating around. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130474 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a ton of comment typos found by codespell. Patch byChris Lattner2011-04-15
| | | | | | | | Luis Felipe Strano Moraes! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129558 91177308-0d34-0410-b5e6-96231b3b80d8
* Clean up some code for clarity.Bob Wilson2011-04-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128953 91177308-0d34-0410-b5e6-96231b3b80d8
* Check early if this is an unsupported opcode, so that we can avoid ↵Owen Anderson2011-03-29
| | | | | | needlessly instantiating the base register in some cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128481 91177308-0d34-0410-b5e6-96231b3b80d8
* Add safety check that didn't show up in testing.Owen Anderson2011-03-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128467 91177308-0d34-0410-b5e6-96231b3b80d8
* Get rid of the non-writeback versions VLDMDB and VSTMDB, which don't ↵Owen Anderson2011-03-29
| | | | | | actually exist. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128461 91177308-0d34-0410-b5e6-96231b3b80d8
* Do not form thumb2 ldrd / strd if the offset is by multiple of 4. rdar://9133587Evan Cheng2011-03-15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127683 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach ARMLoadStoreOptimizer to remove kill flags from merged instructions as ↵Jakob Stoklund Olesen2011-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | well. This is necessary to avoid a crash in certain tangled situations where a kill flag is first correctly moved to a merged instruction, and then needs to be moved again: STR %R0, a... STR %R0<kill>, b... First becomes: STR %R0, b... STM a, %R0<kill>, ... and then: STM a, %R0, ... STM b, %R0<kill>, ... We can now remove the kill flag from the merged STM when needed. 8960050. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125591 91177308-0d34-0410-b5e6-96231b3b80d8
* Move code for OffsetCompare struct closer to where it is used.Bob Wilson2011-02-07
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125009 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a few more places that should use MBB::getLastNonDebugInstr().Jakob Stoklund Olesen2011-01-13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123408 91177308-0d34-0410-b5e6-96231b3b80d8
* Do not model all INLINEASM instructions as having unmodelled side effects.Evan Cheng2011-01-07
| | | | | | | | | | | Instead encode llvm IR level property "HasSideEffects" in an operand (shared with IsAlignStack). Added MachineInstrs::hasUnmodeledSideEffects() to check the operand when the instruction is an INLINEASM. This allows memory instructions to be moved around INLINEASM instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123044 91177308-0d34-0410-b5e6-96231b3b80d8
* PR8921: LDM/POP do not support interworking prior to v5t.Bob Wilson2011-01-06
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122970 91177308-0d34-0410-b5e6-96231b3b80d8
* Missed the _RET versions of LDMIA.Bill Wendling2010-11-18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119726 91177308-0d34-0410-b5e6-96231b3b80d8
* Add missing opcodes now that this function's used in more than one place.Bill Wendling2010-11-17
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119539 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r119109 for now. It's breaking 176.gcc.Evan Cheng2010-11-17
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119492 91177308-0d34-0410-b5e6-96231b3b80d8
* The machine instruction no longer encodes the submode as a separate operand. WeBill Wendling2010-11-17
| | | | | | | should get the submode from the load/store multiple instruction's opcode. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119461 91177308-0d34-0410-b5e6-96231b3b80d8
* Encode the multi-load/store instructions with their respective modes ('ia',Bill Wendling2010-11-16
| | | | | | | | | | 'db', 'ib', 'da') instead of having that mode as a separate field in the instruction. It's more convenient for the asm parser and much more readable for humans. <rdar://problem/8654088> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119310 91177308-0d34-0410-b5e6-96231b3b80d8
* Make sure ARM multi load / store pass copies memoperands when forming ldrd / ↵Evan Cheng2010-11-15
| | | | | | strd. pr8113. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119109 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor ARM STR/STRB instruction patterns into STR{B}i12 and STR{B}rs, likeJim Grosbach2010-10-27
| | | | | | | | the LDR instructions have. This makes the literal/register forms of the instructions explicit and allows us to assign scheduling itineraries appropriately. rdar://8477752 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117505 91177308-0d34-0410-b5e6-96231b3b80d8
* One more spot where the new arm mode LDR instruction representationJim Grosbach2010-10-27
| | | | | | | doesn't need the additional addrmode2 register operand. Missed it the first time around. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117421 91177308-0d34-0410-b5e6-96231b3b80d8
* First part of refactoring ARM addrmode2 (load/store) instructions to be moreJim Grosbach2010-10-26
| | | | | | | | explicit about the operands. Split out the different variants into separate instructions. This gives us the ability to, among other things, assign different scheduling itineraries to the variants. rdar://8477752. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117409 91177308-0d34-0410-b5e6-96231b3b80d8
* Grammar.Jim Grosbach2010-10-26
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117388 91177308-0d34-0410-b5e6-96231b3b80d8
* Transfer implicit ops when forming load multiple and return instructions.Evan Cheng2010-10-22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117151 91177308-0d34-0410-b5e6-96231b3b80d8
* Increase ARM APCS preferred alignment for i64 and f64 from 32 bits to 64 bits.Bob Wilson2010-09-29
| | | | | | | | LDM/STM instructions can run one cycle faster on some ARM processors if the memory address is 64-bit aligned. Radar 8489376. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115047 91177308-0d34-0410-b5e6-96231b3b80d8
* move getRegisterNumbering() to out of ARMBaseRegisterInfo into the helperJim Grosbach2010-09-15
| | | | | | | | | functions in ARMBaseInfo.h so it can be used in the MC library as well. For anything bigger than this, we may want a means to have a small support library for shared helper functions like this. Cross that bridge when we come to it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114016 91177308-0d34-0410-b5e6-96231b3b80d8
* Calculate the number of VLDM/VSTM registers by subtracting the number ofBob Wilson2010-09-10
| | | | | | | fixed operands from the total number of operands (including the variadic ones). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113597 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix merging base-updates for VLDM/VSTM: Before I switched these instructionsBob Wilson2010-09-10
| | | | | | | | | | | to use AddrMode4, there was a count of the registers stored in one of the operands. I changed that to just count the operands but forgot to adjust for the size of D registers. This was noticed by Evan as a performance problem but it is a potential correctness bug as well, since it is possible that this could merge a base update with a non-matching immediate. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113576 91177308-0d34-0410-b5e6-96231b3b80d8
* Remember to clear the shadow kill flag at the same time as clearing the realJakob Stoklund Olesen2010-08-30
| | | | | | | | | | | kill flag. This could cause duplicate kill flags when the same register was used twice in a continuous sequence of STRs. There is no small test case. <rdar://problem/8218046> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112534 91177308-0d34-0410-b5e6-96231b3b80d8
* When merging Thumb2 loads/stores, do not give up when the offset is one ofBob Wilson2010-08-27
| | | | | | | | | the special values that for ARM would be used with IB or DA modes. Fall through and consider materializing a new base address is it would be profitable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112329 91177308-0d34-0410-b5e6-96231b3b80d8
* Change ARM VFP VLDM/VSTM instructions to use addressing mode #4, just likeBob Wilson2010-08-27
| | | | | | | | | | | | | | | | | | | | all the other LDM/STM instructions. This fixes asm printer crashes when compiling with -O0. I've changed one of the NEON tests (vst3.ll) to run with -O0 to check this in the future. Prior to this change VLDM/VSTM used addressing mode #5, but not really. The offset field was used to hold a count of the number of registers being loaded or stored, and the AM5 opcode field was expanded to specify the IA or DB mode, instead of the standard ADD/SUB specifier. Much of the backend was not aware of these special cases. The crashes occured when rewriting a frameindex caused the AM5 offset field to be changed so that it did not have a valid submode. I don't know exactly what changed to expose this now. Maybe we've never done much with -O0 and NEON. Regardless, there's no longer any reason to keep a count of the VLDM/VSTM registers, so we can use addressing mode #4 and clean things up in a lot of places. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112322 91177308-0d34-0410-b5e6-96231b3b80d8
* Unsigned value cannot be < 0.Bob Wilson2010-08-27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112300 91177308-0d34-0410-b5e6-96231b3b80d8
* Reapply r110396, with fixes to appease the Linux buildbot gods.Owen Anderson2010-08-06
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110460 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r110396 to fix buildbots.Owen Anderson2010-08-06
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110410 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't use PassInfo* as a type identifier for passes. Instead, use the ↵Owen Anderson2010-08-05
| | | | | | | | | address of the static ID member as the sole unique type identifier. Clean up APIs related to this change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110396 91177308-0d34-0410-b5e6-96231b3b80d8
* When no memoperands are present, assume unaligned, volatile.Jakob Stoklund Olesen2010-06-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107114 91177308-0d34-0410-b5e6-96231b3b80d8
* Use pre-increment instead of post-increment when the result is not used.Dan Gohman2010-06-22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106542 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR7421: bug in kill transferring logic. It was ignoring loads / stores ↵Evan Cheng2010-06-21
| | | | | | which have already been processed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106481 91177308-0d34-0410-b5e6-96231b3b80d8
* Make sure to skip dbg_value instructions when finding an insertion point forJim Grosbach2010-06-15
| | | | | | the combined load/store instruction. rdar://7797940 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105982 91177308-0d34-0410-b5e6-96231b3b80d8
* be slightly more subtle about skipping dbg_value instructions; otherwise, if aJim Grosbach2010-06-09
| | | | | | | | dbg_value immediately follows a sequence of ldr/str instructions that should be combined into an ldm/stm and is the last instruction in the block, then combine may end up being skipped. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105758 91177308-0d34-0410-b5e6-96231b3b80d8
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