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llvm-project/llvm/lib/Target/RISCV
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Sudharsan Veeravalli c9684e5892
[RISCV] Implement EmitTargetCodeForMemset for Xqcilsm (#151555) 
This patch adds support for converting memset calls to one or more
`QC_SETWMI` instructions when beneficial. We only handle aligned memset
calls for now.

We limit a `QC_SETWMI` to 16 words or less to improve interruptibility.
So for `1-16` words we use a single `QC_SETWMI`:

`QC_SETWMI reg1, N, 0(reg2)`

For `17-32 `words we use two `QC_SETWMI's` with the first as 16 words
and the second for the remainder:

```
QC_SETWMI reg1, 16, 0(reg2)
QC_SETWMI reg1, N, 64(reg2)
```

For `33-48` words, we would like to use `(16, 16, n)`, but that means
the last QC_SETWMI needs an offset of `128` which the instruction
doesn't support. So in this case we use a length of `15` for the second
instruction and we do the rest with the third instruction.

This means the maximum number of words handled is `47` (for now):

```
QC_SETWMI R2, R0, 16, 0
QC_SETWMI R2, R0, 15, 64
QC_SETWMI R2, R0, N, 124
```

For `48` words or more, call the target independent memset.
2025-08-04 12:51:14 +05:30
..
AsmParser
[RISCV] Handle 'c.addi x0, $imm' alias for c.nop using PseudoC_ADDI_NOP. (#150719)
2025-07-25 20:55:52 -07:00
Disassembler
[RISCV] Move definitions of decodeZcmpRlist/decodeXqccmpRlistS0 to their declarations. NFC
2025-07-28 11:30:39 -07:00
GISel
[RISCV] Fix a warning
2025-05-30 10:27:57 -07:00
MCA
[llvm] annotate interfaces in llvm/Target for DLL export (#143615)
2025-06-17 13:28:45 -07:00
MCTargetDesc
MCSymbolELF: Migrate away from classof
2025-08-03 15:45:36 -07:00
TargetInfo
[llvm] annotate interfaces in llvm/Target for DLL export (#143615)
2025-06-17 13:28:45 -07:00
CMakeLists.txt
[RISCV][NFC] Split InterleavedAccess related TLI hooks into a separate file (#148040)
2025-07-11 11:04:41 -07:00
RISCV.h
Register assembly printer passes (#138348)
2025-05-06 18:01:17 -07:00
RISCV.td
[RISCV] Implement base scheduling model for andes 45 series processor. (#141008)
2025-06-04 16:11:43 +08:00
RISCVAsmPrinter.cpp
[RISCV] Merge some of the C_*_HINT instruction into the regular C_* instructions. (#150710)
2025-07-25 20:55:15 -07:00
RISCVCallingConv.cpp
[RISCV] Guard the alternative static chain register use on ILP32E/LP64E (#142715)
2025-06-12 02:24:10 +08:00
RISCVCallingConv.h
…
RISCVCallingConv.td
[RISCV] Support PreserveMost calling convention (#148214)
2025-07-30 16:30:48 +08:00
RISCVCodeGenPrepare.cpp
[RISCV] Widen i1 AnyOf reductions (#134898)
2025-04-28 10:07:51 +08:00
RISCVCombine.td
…
RISCVConstantPoolValue.cpp
…
RISCVConstantPoolValue.h
…
RISCVDeadRegisterDefinitions.cpp
[RISCV] Add a PseudoVSETVLIX0X0 pseudo for the x0,x0 vsetvli. NFC (#141875)
2025-05-29 10:21:38 -07:00
RISCVExpandAtomicPseudoInsts.cpp
[NFC][LLVM][RISCV] Cleanup pass initialization for RISCV (#134279)
2025-04-03 11:28:45 -07:00
RISCVExpandPseudoInsts.cpp
[RISCV] Add nds.bfos and nds.bfoz for the short forward branch optimization. (#145836)
2025-06-27 10:54:41 +08:00
RISCVFeatures.td
[RISCV] Add missing Zvl dependencies for XSfvqmaccdod/XSfvqmaccqoq/XSfvfwmaccqqq. (#150346)
2025-07-23 22:06:46 -07:00
RISCVFoldMemOffset.cpp
[RISCV] Clear kill flags after replaceRegWith in RISCVFoldMemOffset. (#136762)
2025-04-22 19:24:29 -07:00
RISCVFrameLowering.cpp
[llvm] Use a range-based for loop instead of {std,llvm}::for_each (NFC) (#150841)
2025-07-27 10:43:52 -07:00
RISCVFrameLowering.h
[RISCV] Pass the MachineInstr flag as argument to allocateStack (#147531)
2025-07-15 08:09:18 -07:00
RISCVGatherScatterLowering.cpp
[RISCV] Fix typos discovered by codespell (NFC) (#126191)
2025-02-07 13:35:30 +05:30
RISCVGISel.td
[Targets] Migrate from atomic_load_8/16/32/64 to atomic_load_nonext_8/16/32/64. NFC (#137428)
2025-04-28 09:26:34 -07:00
RISCVIndirectBranchTracking.cpp
[RISCV] Make RISCVIndirectBranchTracking visible in debug output (#141623)
2025-05-28 14:56:44 +08:00
RISCVInsertReadWriteCSR.cpp
…
RISCVInsertVSETVLI.cpp
[RISCV] Don't increase vslide or splat vl if +vl-dependent-latency is present (#147089)
2025-07-09 16:25:22 +08:00
RISCVInsertWriteVXRM.cpp
[RISCV][NFC] Convert some predicates to TIIPredicate (#129658)
2025-04-30 16:59:05 +08:00
RISCVInstrFormats.td
[RISCV] Fix VLOptimizer assert, relax ElementsDependOn on viota/vms{b,i,o}f.m (#149698)
2025-07-21 14:51:41 +08:00
RISCVInstrFormatsC.td
…
RISCVInstrFormatsV.td
[RISCV] Order the implicit defs/uses of vl/vtype on MC instructions the same as the pseudo version. (#129104)
2025-02-27 13:14:22 -08:00
RISCVInstrGISel.td
[RISCV] TableGen-erate RISC-V SDNodes (#138381)
2025-05-09 12:36:59 -07:00
RISCVInstrInfo.cpp
[RISCV] Remove now unused immzero operand type. NFC
2025-07-25 21:16:07 -07:00
RISCVInstrInfo.h
[RISCV] Remove separate immediate condition codes from RISCVCC. NFC (#145762)
2025-06-25 23:09:24 -07:00
RISCVInstrInfo.td
[RISCV][FPEnv] Lowering of fpmode intrinsics (#148569)
2025-07-16 16:02:15 +07:00
RISCVInstrInfoA.td
[RISCV] Remove AND mask generated by ( zext ( atomic_load ) ) by replacing the load with zextload for orderings not stronger then monotonic. (#136502)
2025-04-28 08:35:51 -07:00
RISCVInstrInfoC.td
[RISCV] Accept c.slli/c.srli/c.srli with a 0 immediate as hints. (#150689)
2025-07-26 00:05:33 -07:00
RISCVInstrInfoD.td
[RISCV] Split f64 loads/stores for RV32+Zdinx during isel instead of post-RA. (#139840)
2025-05-15 08:35:43 -07:00
RISCVInstrInfoF.td
[RISCV][MC] Add support for Q extension (#139369)
2025-05-15 10:51:06 +08:00
RISCVInstrInfoM.td
[RISCV] TableGen-erate RISC-V SDNodes (#138381)
2025-05-09 12:36:59 -07:00
RISCVInstrInfoP.td
[RISCV] Add IsSignExtendingOpW to P-ext CLS, CLSW, and ABSW instructions. (#151037)
2025-07-28 21:35:09 -07:00
RISCVInstrInfoQ.td
[RISCV][Scheduler] Add scheduler definitions for the Q extension (#139495)
2025-05-15 10:58:13 +08:00
RISCVInstrInfoSFB.td
[RISCV] Fix the operand types for shift instructions in RISCVInstrInfoSFB.td. NFC
2025-03-30 22:38:26 -07:00
RISCVInstrInfoV.td
[RISCV] Fix VLOptimizer assert, relax ElementsDependOn on viota/vms{b,i,o}f.m (#149698)
2025-07-21 14:51:41 +08:00
RISCVInstrInfoVPseudos.td
[RISCV] Remove unused vector pseudo class. NFC (#151327)
2025-07-31 10:14:36 +08:00
RISCVInstrInfoVSDPatterns.td
[RISCV] Use (i64 GPR:$rs1) instead of i64:$rs1 in isel patterns.
2025-08-01 09:44:09 -07:00
RISCVInstrInfoVVLPatterns.td
[RISCV] Use (i64 GPR:$rs1) instead of i64:$rs1 in isel patterns.
2025-08-01 09:44:09 -07:00
RISCVInstrInfoXAndes.td
[RISCV] Implement load/store support for XAndesBFHCvt (#150350)
2025-07-25 11:29:17 +08:00
RISCVInstrInfoXCV.td
[RISCV] Remove separate immediate condition codes from RISCVCC. NFC (#145762)
2025-06-25 23:09:24 -07:00
RISCVInstrInfoXMips.td
[RISCV] Added the MIPS prefetch extensions for MIPS RV64 P8700. (#145647)
2025-07-03 10:59:10 +02:00
RISCVInstrInfoXqccmp.td
[RISCV] Prefer RegList over Rlist in assembler. NFC
2025-04-04 09:37:52 -07:00
RISCVInstrInfoXqci.td
[RISCV] Implement EmitTargetCodeForMemset for Xqcilsm (#151555)
2025-08-04 12:51:14 +05:30
RISCVInstrInfoXRivos.td
[RISCV] Make RISCVVPseudo extend Pseudo. NFC (#149785)
2025-07-23 16:29:12 +08:00
RISCVInstrInfoXSf.td
[RISCV] Make RISCVVPseudo extend Pseudo. NFC (#149785)
2025-07-23 16:29:12 +08:00
RISCVInstrInfoXSfmm.td
[RISCV] Add MC layer support for XSfmm*. (#133031)
2025-05-21 08:26:35 -07:00
RISCVInstrInfoXTHead.td
[RISCV] Use (i64 GPR:$rs1) instead of i64:$rs1 in isel patterns.
2025-08-01 09:44:09 -07:00
RISCVInstrInfoXVentana.td
…
RISCVInstrInfoXwch.td
…
RISCVInstrInfoZa.td
[RISCV] Rename some DecoderNamespaces and cleanup debug messages. NFC (#131409)
2025-03-17 12:49:08 -07:00
RISCVInstrInfoZalasr.td
[TableGen][SelectionDAG][GISel][RISCV] Support IsNonExtLoad for IsAtomic PatFrags. (#137401)
2025-04-25 15:45:43 -07:00
RISCVInstrInfoZb.td
[RISCV] Add Commutable flag to XNOR. (#147654)
2025-07-09 07:54:07 -07:00
RISCVInstrInfoZc.td
[RISCV] Remove extra operands from Zcb compression patterns. NFC (#150541)
2025-07-24 18:03:30 -07:00
RISCVInstrInfoZclsd.td
[RISCV] Reuse existing tablegen classes for Zilsd/Zclsd. NFC (#134946)
2025-04-08 17:53:39 -07:00
RISCVInstrInfoZcmop.td
…
RISCVInstrInfoZfa.td
[RISCV] Fix schedule info for FMVP_D_X. (#140766)
2025-05-22 08:39:57 -07:00
RISCVInstrInfoZfbfmin.td
…
RISCVInstrInfoZfh.td
[NFC][RISCV] Remove extra space in RISCVInstrInfoZfh.td
2025-05-13 13:53:38 +08:00
RISCVInstrInfoZicbo.td
[RISCV] Change the InstFormat for Zicbop prefetch instructions to InstFormatOther. (#148934)
2025-07-15 14:49:54 -07:00
RISCVInstrInfoZicfiss.td
…
RISCVInstrInfoZicond.td
[RISCV] TableGen-erate RISC-V SDNodes (#138381)
2025-05-09 12:36:59 -07:00
RISCVInstrInfoZilsd.td
[RISCV] Lower i64 load/stores to ld/sd with Zilsd. (#139808)
2025-05-14 09:54:07 -07:00
RISCVInstrInfoZimop.td
[RISCV] TableGen-erate RISC-V SDNodes (#138381)
2025-05-09 12:36:59 -07:00
RISCVInstrInfoZk.td
[RISCV] TableGen-erate RISC-V SDNodes (#138381)
2025-05-09 12:36:59 -07:00
RISCVInstrInfoZvfbf.td
[RISCV] Add VL and VTYPE to implicit uses on MC vector instructions that also use FRM (#129130)
2025-02-27 19:25:14 -08:00
RISCVInstrInfoZvk.td
[RISCV] Remove duplicate vsha2ch/vsha2cl/vsha2ms i32 patterns. NFC (#151835)
2025-08-02 21:53:58 -07:00
RISCVInstrInfoZvqdotq.td
[RISCV] Fix schedule info for Zqvdotq (#142717)
2025-06-05 12:22:43 +08:00
RISCVInstrPredicates.td
[RISCV] Add isel patterns for generating XAndesPerf branch immediate instructions (#145147)
2025-07-03 12:47:53 +08:00
RISCVInterleavedAccess.cpp
Revert "[RISCV] Cost bf16/f16 vector non-unit memory accesses as legal without zvfhmin/zvfbfmin (#150882)"
2025-07-30 13:29:47 +08:00
RISCVISelDAGToDAG.cpp
[RISCV] Add RISCVISD::LD_RV32/SD_RV32 to isWorthFoldingAdd. (#151606)
2025-07-31 22:03:29 -07:00
RISCVISelDAGToDAG.h
[RISCV] Add a non-template version of SelectAddrRegZextRegScale and move code there. NFC
2025-07-19 17:53:39 -07:00
RISCVISelLowering.cpp
[RISCV] Add intrinsics for strided segment loads with fixed vectors (#151611)
2025-08-01 10:13:46 -07:00
RISCVISelLowering.h
Revert "[RISCV] Cost bf16/f16 vector non-unit memory accesses as legal without zvfhmin/zvfbfmin (#150882)"
2025-07-30 13:29:47 +08:00
RISCVLandingPadSetup.cpp
…
RISCVLateBranchOpt.cpp
[RISCV] Remove separate immediate condition codes from RISCVCC. NFC (#145762)
2025-06-25 23:09:24 -07:00
RISCVLoadStoreOptimizer.cpp
[NFC][CodeGen] Adopt MachineFunctionProperties convenience accessors (#141101)
2025-05-23 08:30:29 -07:00
RISCVMachineFunctionInfo.cpp
[RISCV] SiFive CLIC Support (#132481)
2025-04-25 17:12:27 -07:00
RISCVMachineFunctionInfo.h
[RISCV] SiFive CLIC Support (#132481)
2025-04-25 17:12:27 -07:00
RISCVMacroFusion.td
…
RISCVMakeCompressible.cpp
[RISCV][NFC] Remove hasStdExtCOrZca (#145139)
2025-06-23 10:49:47 -07:00
RISCVMergeBaseOffset.cpp
[NFC][CodeGen] Adopt MachineFunctionProperties convenience accessors (#141101)
2025-05-23 08:30:29 -07:00
RISCVMoveMerger.cpp
[RISCV] Xqccmp Code Generation (#128815)
2025-03-05 10:59:45 -08:00
RISCVOptWInstrs.cpp
[RISCV] Convert LWU to LW if possible in RISCVOptWInstrs (#144703)
2025-07-21 11:48:33 +01:00
RISCVPfmCounters.td
…
RISCVPostRAExpandPseudoInsts.cpp
…
RISCVProcessors.td
[RISCV] Avoid vl toggles when lowering vector_splice/experimental_vp_splice and add +vl-dependent-latency tuning feature (#146746)
2025-07-09 11:09:13 +08:00
RISCVProfiles.td
[RISCV][NFC] Add Zicsr to profiles explicitly (#136134)
2025-04-18 10:59:32 +08:00
RISCVPushPopOptimizer.cpp
[RISCV] Simplify how we find combinable cm.pop+ret. (#130204)
2025-03-06 21:55:47 -08:00
RISCVRedundantCopyElimination.cpp
[RISCV] Remove separate immediate condition codes from RISCVCC. NFC (#145762)
2025-06-25 23:09:24 -07:00
RISCVRegisterInfo.cpp
[RISCV] Fix a warning
2025-07-30 09:43:57 -07:00
RISCVRegisterInfo.h
[RISCV][RegAlloc] Add getCSRFirstUseCost for RISC-V (#131349)
2025-03-20 15:20:04 -04:00
RISCVRegisterInfo.td
[RISCV] Merge some of the C_*_HINT instruction into the regular C_* instructions. (#150710)
2025-07-25 20:55:15 -07:00
RISCVSchedAndes45.td
[RISCV] Add short forward branch scheduling for Andes45 (#147890)
2025-07-14 09:26:19 +08:00
RISCVSchedGenericOOO.td
[RISCV] Add UnsupportedSchedXXX for vendor extensions package (#147666)
2025-07-10 14:15:22 +08:00
RISCVSchedMIPSP8700.td
[RISCV] Add UnsupportedSchedXXX for vendor extensions package (#147666)
2025-07-10 14:15:22 +08:00
RISCVSchedRocket.td
[RISCV] Add UnsupportedSchedXXX for vendor extensions package (#147666)
2025-07-10 14:15:22 +08:00
RISCVSchedSiFive7.td
[RISCV] Add scheduling info for XSfvqmaccdod/qoq and XSfvfwmaccqqq instructions (#147626)
2025-07-09 09:38:44 -07:00
RISCVSchedSiFiveP400.td
[RISCV] Add UnsupportedSchedXXX for vendor extensions package (#147666)
2025-07-10 14:15:22 +08:00
RISCVSchedSiFiveP500.td
[RISCV] Add UnsupportedSchedXXX for vendor extensions package (#147666)
2025-07-10 14:15:22 +08:00
RISCVSchedSiFiveP600.td
[RISCV] Add UnsupportedSchedXXX for vendor extensions package (#147666)
2025-07-10 14:15:22 +08:00
RISCVSchedSiFiveP800.td
[RISCV] Add UnsupportedSchedXXX for vendor extensions package (#147666)
2025-07-10 14:15:22 +08:00
RISCVSchedSpacemitX60.td
Revert "[RISCV] Refactor X60 scheduling model helper classes. NFC. (#151572)"
2025-08-02 10:09:32 -07:00
RISCVSchedSyntacoreSCR1.td
[RISCV] Add UnsupportedSchedXXX for vendor extensions package (#147666)
2025-07-10 14:15:22 +08:00
RISCVSchedSyntacoreSCR7.td
[RISCV] Add UnsupportedSchedXXX for vendor extensions package (#147666)
2025-07-10 14:15:22 +08:00
RISCVSchedSyntacoreSCR345.td
[RISCV] Add UnsupportedSchedXXX for vendor extensions package (#147666)
2025-07-10 14:15:22 +08:00
RISCVSchedTTAscalonD8.td
[RISCV] Add UnsupportedSchedXXX for vendor extensions package (#147666)
2025-07-10 14:15:22 +08:00
RISCVSchedule.td
[RISCV] Add UnsupportedSchedXXX for vendor extensions package (#147666)
2025-07-10 14:15:22 +08:00
RISCVScheduleV.td
[RISCV][NFC] Move VLDSX0Pred to RISCVInstrPredicates.td (#137938)
2025-05-12 12:05:50 +08:00
RISCVScheduleXSf.td
[RISCV] Add scheduling info for XSfvqmaccdod/qoq and XSfvfwmaccqqq instructions (#147626)
2025-07-09 09:38:44 -07:00
RISCVScheduleZb.td
…
RISCVScheduleZvk.td
…
RISCVSchedXiangShanNanHu.td
[RISCV] Add UnsupportedSchedXXX for vendor extensions package (#147666)
2025-07-10 14:15:22 +08:00
RISCVSelectionDAGInfo.cpp
[RISCV] Implement EmitTargetCodeForMemset for Xqcilsm (#151555)
2025-08-04 12:51:14 +05:30
RISCVSelectionDAGInfo.h
[RISCV] Implement EmitTargetCodeForMemset for Xqcilsm (#151555)
2025-08-04 12:51:14 +05:30
RISCVSubtarget.cpp
[MISched] Use SchedRegion in overrideSchedPolicy and overridePostRASchedPolicy (#149297)
2025-07-22 15:55:12 +08:00
RISCVSubtarget.h
[MISched] Use SchedRegion in overrideSchedPolicy and overridePostRASchedPolicy (#149297)
2025-07-22 15:55:12 +08:00
RISCVSystemOperands.td
[RISCV] Sort RISCVSystemOperands to match the RISC-V Privilege Specification. (#140967)
2025-05-22 08:46:48 -07:00
RISCVTargetMachine.cpp
[RISCV] Remove -riscv-enable-vl-optimizer flag (#149349)
2025-07-25 12:34:09 +08:00
RISCVTargetMachine.h
[CodeGen] Move MISched target hooks into TargetMachine (#125700)
2025-02-05 11:41:37 +05:30
RISCVTargetObjectFile.cpp
RISCV: Replace RISCVMCExpr with MCSpecifierExpr
2025-06-15 16:51:09 -07:00
RISCVTargetObjectFile.h
RISCV: Replace RISCVMCExpr with MCSpecifierExpr
2025-06-15 16:51:09 -07:00
RISCVTargetTransformInfo.cpp
[RISCV] Adjust unroll prefs for loops with vectors (#151525)
2025-07-31 21:11:56 +01:00
RISCVTargetTransformInfo.h
Revert "[RISCV] Cost bf16/f16 vector non-unit memory accesses as legal without zvfhmin/zvfbfmin (#150882)"
2025-07-30 13:29:47 +08:00
RISCVVectorMaskDAGMutation.cpp
Reland "[RISCV] AddEdge between mask producer and user of V0 (#146855)" (#148566)
2025-07-18 10:56:07 +08:00
RISCVVectorPeephole.cpp
[RISCV] Fold vmv.v.v into vmerge (#151341)
2025-07-31 10:15:12 +08:00
RISCVVLOptimizer.cpp
[RISCV] Simplify mask operand check in VLOptimizer. NFC (#150373)
2025-07-24 20:38:36 +08:00
RISCVVMV0Elimination.cpp
[NFC][CodeGen] Adopt MachineFunctionProperties convenience accessors (#141101)
2025-05-23 08:30:29 -07:00
RISCVZacasABIFix.cpp
…