[llvm] r348121 - [NFC][AArch64] Split out backend features

Galina Kistanova via llvm-commits llvm-commits at lists.llvm.org
Mon Dec 3 14:41:49 PST 2018


Hello Diogo,

This commit broke tests on one of our builders:
http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-win/builds/14363
. . .
Failing Tests (1):
    LLVM :: MC/AArch64/armv8.3a-complex.s

Please have a look at this?

Thanks

Galina

On Mon, Dec 3, 2018 at 3:11 AM Diogo N. Sampaio via llvm-commits <
llvm-commits at lists.llvm.org> wrote:

> Author: dnsampaio
> Date: Mon Dec  3 03:08:13 2018
> New Revision: 348121
>
> URL: http://llvm.org/viewvc/llvm-project?rev=348121&view=rev
> Log:
> [NFC][AArch64] Split out backend features
>
> This patch splits backend features currently
> hidden behind architecture versions.
>
> For example, currently the only way to activate
> complex numbers extension is targeting an v8.3
> architecture, where after the patch this extension
> can be added separately.
>
> This refactoring is required by the new command lines proposal:
> http://lists.llvm.org/pipermail/llvm-dev/2018-September/126346.html
>
> Reviewers: DavidSpickett, olista01, t.p.northover
>
> Subscribers: kristof.beyls, bryanpkc, javed.absar, pbarrio
>
> Differential revision: https://reviews.llvm.org/D54633
>
>
> Removed:
>     llvm/trunk/test/MC/AArch64/armv8.2a-mmfr2.s
> Modified:
>     llvm/trunk/lib/Target/AArch64/AArch64.td
>     llvm/trunk/lib/Target/AArch64/AArch64InstrFormats.td
>     llvm/trunk/lib/Target/AArch64/AArch64InstrInfo.td
>     llvm/trunk/lib/Target/AArch64/AArch64Subtarget.h
>     llvm/trunk/lib/Target/AArch64/AArch64SystemOperands.td
>     llvm/trunk/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
>     llvm/trunk/test/MC/AArch64/armv8.2a-at.s
>     llvm/trunk/test/MC/AArch64/armv8.2a-persistent-memory.s
>     llvm/trunk/test/MC/AArch64/armv8.3a-complex.s
>     llvm/trunk/test/MC/AArch64/armv8.3a-js.s
>     llvm/trunk/test/MC/AArch64/armv8.3a-signed-pointer.s
>     llvm/trunk/test/MC/AArch64/armv8.4a-flag.s
>     llvm/trunk/test/MC/AArch64/armv8.4a-ldst.s
>     llvm/trunk/test/MC/AArch64/armv8.4a-tlb.s
>     llvm/trunk/test/MC/AArch64/armv8.4a-trace.s
>
> Modified: llvm/trunk/lib/Target/AArch64/AArch64.td
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64.td?rev=348121&r1=348120&r2=348121&view=diff
>
> ==============================================================================
> --- llvm/trunk/lib/Target/AArch64/AArch64.td (original)
> +++ llvm/trunk/lib/Target/AArch64/AArch64.td Mon Dec  3 03:08:13 2018
> @@ -65,6 +65,18 @@ def FeatureLSE : SubtargetFeature<"lse",
>  def FeatureRDM : SubtargetFeature<"rdm", "HasRDM", "true",
>    "Enable ARMv8.1 Rounding Double Multiply Add/Subtract instructions">;
>
> +def FeaturePAN : SubtargetFeature<
> +    "pan", "HasPAN", "true",
> +    "Enables ARM v8.1 Privileged Access-Never extension">;
> +
> +def FeatureLOR : SubtargetFeature<
> +    "lor", "HasLOR", "true",
> +    "Enables ARM v8.1 Limited Ordering Regions extension">;
> +
> +def FeatureVH : SubtargetFeature<
> +    "vh", "HasVH", "true",
> +    "Enables ARM v8.1 Virtual Host extension">;
> +
>  def FeaturePerfMon : SubtargetFeature<"perfmon", "HasPerfMon", "true",
>    "Enable ARMv8 PMUv3 Performance Monitors extension">;
>
> @@ -77,6 +89,18 @@ def FeatureFP16FML : SubtargetFeature<"f
>  def FeatureSPE : SubtargetFeature<"spe", "HasSPE", "true",
>    "Enable Statistical Profiling extension">;
>
> +def FeaturePAN_RWV : SubtargetFeature<
> +    "pan-rwv", "HasPAN_RWV", "true",
> +    "Enable v8.2 PAN s1e1R and s1e1W Variants",
> +    [FeaturePAN]>;
> +
> +// UAO PState
> +def FeaturePsUAO : SubtargetFeature< "uaops", "HasPsUAO", "true",
> +    "Enable v8.2 UAO PState">;
> +
> +def FeatureCCPP : SubtargetFeature<"ccpp", "HasCCPP",
> +    "true", "Enable v8.2 data Cache Clean to Point of Persistence" >;
> +
>  def FeatureSVE : SubtargetFeature<"sve", "HasSVE", "true",
>    "Enable Scalable Vector Extension (SVE) instructions">;
>
> @@ -195,6 +219,66 @@ def FeatureDotProd : SubtargetFeature<
>      "dotprod", "HasDotProd", "true",
>      "Enable dot product support">;
>
> +def FeaturePA : SubtargetFeature<
> +    "pa", "HasPA", "true",
> +    "Enable v8.3-A Pointer Authentication enchancement">;
> +
> +def FeatureJS : SubtargetFeature<
> +    "jsconv", "HasJS", "true",
> +    "Enable v8.3-A JavaScript FP conversion enchancement",
> +    [FeatureFPARMv8]>;
> +
> +def FeatureCCIDX : SubtargetFeature<
> +    "ccidx", "HasCCIDX", "true",
> +    "Enable v8.3-A Extend of the CCSIDR number of sets">;
> +
> +def FeatureComplxNum : SubtargetFeature<
> +    "complxnum", "HasComplxNum", "true",
> +    "Enable v8.3-A Floating-point complex number support",
> +    [FeatureNEON]>;
> +
> +def FeatureNV : SubtargetFeature<
> +    "nv", "HasNV", "true",
> +    "Enable v8.4-A Nested Virtualization Enchancement">;
> +
> +def FeatureRASv8_4 : SubtargetFeature<
> +    "rasv8_4", "HasRASv8_4", "true",
> +    "Enable v8.4-A Reliability, Availability and Serviceability
> extension",
> +    [FeatureRAS]>;
> +
> +def FeatureMPAM : SubtargetFeature<
> +    "mpam", "HasMPAM", "true",
> +    "Enable v8.4-A Memory system Partitioning and Monitoring extension">;
> +
> +def FeatureDIT : SubtargetFeature<
> +    "dit", "HasDIT", "true",
> +    "Enable v8.4-A Data Independent Timing instructions">;
> +
> +def FeatureTRACEV8_4 : SubtargetFeature<
> +    "tracev8.4", "HasTRACEV8_4", "true",
> +    "Enable v8.4-A Trace extension">;
> +
> +def FeatureAM : SubtargetFeature<
> +    "am", "HasAM", "true",
> +    "Enable v8.4-A Activity Monitors extension">;
> +
> +def FeatureSEL2 : SubtargetFeature<
> +    "sel2", "HasSEL2", "true",
> +    "Enable v8.4-A Secure Exception Level 2 extension">;
> +
> +def FeatureTLB_RMI : SubtargetFeature<
> +    "tlb-rmi", "HasTLB_RMI", "true",
> +    "Enable v8.4-A TLB Range and Maintenance Instructions">;
> +
> +def FeatureFMI : SubtargetFeature<
> +    "fmi", "HasFMI", "true",
> +    "Enable v8.4-A Flag Manipulation Instructions">;
> +
> +// 8.4 RCPC enchancements: LDAPR & STLR instructions with Immediate Offset
> +def FeatureRCPC_IMMO : SubtargetFeature<"rcpc-immo", "HasRCPC_IMMO",
> "true",
> +    "Enable v8.4-A RCPC instructions with Immediate Offsets",
> +    [FeatureRCPC]>;
> +
>  def FeatureNoNegativeImmediates : SubtargetFeature<"no-neg-immediates",
>                                          "NegativeImmediates", "false",
>                                          "Convert immediates and
> instructions "
> @@ -229,7 +313,7 @@ def FeaturePredCtrl : SubtargetFeature<"
>    "Enable execution and data prediction invalidation instructions" >;
>
>  def FeatureCacheDeepPersist : SubtargetFeature<"ccdp", "HasCCDP",
> -    "true", "Enable Cache Clean to Point of Deep Persistence" >;
> +    "true", "Enable v8.5 Cache Clean to Point of Deep Persistence" >;
>
>  def FeatureBranchTargetId : SubtargetFeature<"bti", "HasBTI",
>      "true", "Enable Branch Target Identification" >;
> @@ -245,16 +329,22 @@ def FeatureMTE : SubtargetFeature<"mte",
>  //
>
>  def HasV8_1aOps : SubtargetFeature<"v8.1a", "HasV8_1aOps", "true",
> -  "Support ARM v8.1a instructions", [FeatureCRC, FeatureLSE, FeatureRDM]>;
> +  "Support ARM v8.1a instructions", [FeatureCRC, FeatureLSE, FeatureRDM,
> +  FeaturePAN, FeatureLOR, FeatureVH]>;
>
>  def HasV8_2aOps : SubtargetFeature<"v8.2a", "HasV8_2aOps", "true",
> -  "Support ARM v8.2a instructions", [HasV8_1aOps, FeatureRAS]>;
> +  "Support ARM v8.2a instructions", [HasV8_1aOps, FeaturePsUAO,
> +  FeaturePAN_RWV, FeatureRAS, FeatureCCPP]>;
>
>  def HasV8_3aOps : SubtargetFeature<"v8.3a", "HasV8_3aOps", "true",
> -  "Support ARM v8.3a instructions", [HasV8_2aOps, FeatureRCPC]>;
> +  "Support ARM v8.3a instructions", [HasV8_2aOps, FeatureRCPC, FeaturePA,
> +  FeatureJS, FeatureCCIDX, FeatureComplxNum]>;
>
>  def HasV8_4aOps : SubtargetFeature<"v8.4a", "HasV8_4aOps", "true",
> -  "Support ARM v8.4a instructions", [HasV8_3aOps, FeatureDotProd]>;
> +  "Support ARM v8.4a instructions", [HasV8_3aOps, FeatureDotProd,
> +  FeatureNV, FeatureRASv8_4, FeatureMPAM, FeatureDIT,
> +  FeatureTRACEV8_4, FeatureAM, FeatureSEL2, FeatureTLB_RMI,
> +  FeatureFMI, FeatureRCPC_IMMO]>;
>
>  def HasV8_5aOps : SubtargetFeature<
>    "v8.5a", "HasV8_5aOps", "true", "Support ARM v8.5a instructions",
>
> Modified: llvm/trunk/lib/Target/AArch64/AArch64InstrFormats.td
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64InstrFormats.td?rev=348121&r1=348120&r2=348121&view=diff
>
> ==============================================================================
> --- llvm/trunk/lib/Target/AArch64/AArch64InstrFormats.td (original)
> +++ llvm/trunk/lib/Target/AArch64/AArch64InstrFormats.td Mon Dec  3
> 03:08:13 2018
> @@ -9989,9 +9989,10 @@ class BaseSIMDThreeSameVectorComplex<bit
>    let Inst{4-0}   = Rd;
>  }
>
> +//8.3 CompNum - Floating-point complex number support
>  multiclass SIMDThreeSameVectorComplexHSD<bit U, bits<3> opcode, Operand
> rottype,
>                                            string asm, SDPatternOperator
> OpNode>{
> -  let Predicates = [HasV8_3a, HasNEON, HasFullFP16] in {
> +  let Predicates = [HasComplxNum, HasNEON, HasFullFP16] in {
>    def v4f16 : BaseSIMDThreeSameVectorComplex<0, U, 0b01, opcode, V64,
> rottype,
>                asm, ".4h",
>                [(set (v4f16 V64:$dst), (OpNode (v4f16 V64:$Rd),
> @@ -10007,7 +10008,7 @@ multiclass SIMDThreeSameVectorComplexHSD
>                                                 (rottype i32:$rot)))]>;
>    }
>
> -  let Predicates = [HasV8_3a, HasNEON] in {
> +  let Predicates = [HasComplxNum, HasNEON] in {
>    def v2f32 : BaseSIMDThreeSameVectorComplex<0, U, 0b10, opcode, V64,
> rottype,
>                asm, ".2s",
>                [(set (v2f32 V64:$dst), (OpNode (v2f32 V64:$Rd),
> @@ -10063,7 +10064,7 @@ class BaseSIMDThreeSameVectorTiedComplex
>  multiclass SIMDThreeSameVectorTiedComplexHSD<bit U, bits<3> opcode,
>                                               Operand rottype, string asm,
>                                               SDPatternOperator OpNode> {
> -  let Predicates = [HasV8_3a, HasNEON, HasFullFP16] in {
> +  let Predicates = [HasComplxNum, HasNEON, HasFullFP16] in {
>    def v4f16 : BaseSIMDThreeSameVectorTiedComplex<0, U, 0b01, opcode, V64,
>                rottype, asm, ".4h",
>                [(set (v4f16 V64:$dst), (OpNode (v4f16 V64:$Rd),
> @@ -10079,7 +10080,7 @@ multiclass SIMDThreeSameVectorTiedComple
>                                                 (rottype i32:$rot)))]>;
>    }
>
> -  let Predicates = [HasV8_3a, HasNEON] in {
> +  let Predicates = [HasComplxNum, HasNEON] in {
>    def v2f32 : BaseSIMDThreeSameVectorTiedComplex<0, U, 0b10, opcode, V64,
>                rottype, asm, ".2s",
>                [(set (v2f32 V64:$dst), (OpNode (v2f32 V64:$Rd),
> @@ -10145,7 +10146,7 @@ class BaseSIMDIndexedTiedComplex<bit Q,
>  // classes.
>  multiclass SIMDIndexedTiedComplexHSD<bit U, bit opc1, bit opc2, Operand
> rottype,
>                                       string asm, SDPatternOperator
> OpNode> {
> -  let Predicates = [HasV8_3a,HasNEON,HasFullFP16] in {
> +  let Predicates = [HasComplxNum, HasNEON, HasFullFP16] in {
>    def v4f16_indexed : BaseSIMDIndexedTiedComplex<0, 1, 0, 0b01, opc1,
> opc2, V64,
>                        V64, V128, VectorIndexD, rottype, asm, ".4h", ".4h",
>                        ".4h", ".h", []> {
> @@ -10161,9 +10162,9 @@ multiclass SIMDIndexedTiedComplexHSD<bit
>      let Inst{11} = idx{1};
>      let Inst{21} = idx{0};
>    }
> -  } // Predicates = [HasV8_3a,HasNEON,HasFullFP16]
> +  } // Predicates = HasComplxNum, HasNEON, HasFullFP16]
>
> -  let Predicates = [HasV8_3a,HasNEON] in {
> +  let Predicates = [HasComplxNum, HasNEON] in {
>    def v4f32_indexed : BaseSIMDIndexedTiedComplex<1, 1, 0, 0b10, opc1,
> opc2,
>                        V128, V128, V128, VectorIndexD, rottype, asm, ".4s",
>                        ".4s", ".4s", ".s", []> {
> @@ -10171,7 +10172,7 @@ multiclass SIMDIndexedTiedComplexHSD<bit
>      let Inst{11} = idx{0};
>      let Inst{21} = 0;
>    }
> -  } // Predicates = [HasV8_3a,HasNEON]
> +  } // Predicates = [HasComplxNum, HasNEON]
>  }
>
>
>  //----------------------------------------------------------------------------
>
> Modified: llvm/trunk/lib/Target/AArch64/AArch64InstrInfo.td
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64InstrInfo.td?rev=348121&r1=348120&r2=348121&view=diff
>
> ==============================================================================
> --- llvm/trunk/lib/Target/AArch64/AArch64InstrInfo.td (original)
> +++ llvm/trunk/lib/Target/AArch64/AArch64InstrInfo.td Mon Dec  3 03:08:13
> 2018
> @@ -24,6 +24,54 @@ def HasV8_4a         : Predicate<"Subtar
>                                   AssemblerPredicate<"HasV8_4aOps",
> "armv8.4a">;
>  def HasV8_5a         : Predicate<"Subtarget->hasV8_5aOps()">,
>                                   AssemblerPredicate<"HasV8_5aOps",
> "armv8.5a">;
> +def HasVH            : Predicate<"Subtarget->hasVH()">,
> +                       AssemblerPredicate<"FeatureVH", "vh">;
> +
> +def HasLOR           : Predicate<"Subtarget->hasLOR()">,
> +                       AssemblerPredicate<"FeatureLOR", "lor">;
> +
> +def HasPA            : Predicate<"Subtarget->hasPA()">,
> +                       AssemblerPredicate<"FeaturePA", "pa">;
> +
> +def HasJS            : Predicate<"Subtarget->hasJS()">,
> +                       AssemblerPredicate<"FeatureJS", "jsconv">;
> +
> +def HasCCIDX         : Predicate<"Subtarget->hasCCIDX()">,
> +                       AssemblerPredicate<"FeatureCCIDX", "ccidx">;
> +
> +def HasComplxNum      : Predicate<"Subtarget->hasComplxNum()">,
> +                       AssemblerPredicate<"FeatureComplxNum",
> "complxnum">;
> +
> +def HasNV            : Predicate<"Subtarget->hasNV()">,
> +                       AssemblerPredicate<"FeatureNV", "nv">;
> +
> +def HasRASv8_4       : Predicate<"Subtarget->hasRASv8_4()">,
> +                       AssemblerPredicate<"FeatureRASv8_4", "rasv8_4">;
> +
> +def HasMPAM          : Predicate<"Subtarget->hasMPAM()">,
> +                       AssemblerPredicate<"FeatureMPAM", "mpam">;
> +
> +def HasDIT           : Predicate<"Subtarget->hasDIT()">,
> +                       AssemblerPredicate<"FeatureDIT", "dit">;
> +
> +def HasTRACEV8_4         : Predicate<"Subtarget->hasTRACEV8_4()">,
> +                       AssemblerPredicate<"FeatureTRACEV8_4",
> "tracev8.4">;
> +
> +def HasAM            : Predicate<"Subtarget->hasAM()">,
> +                       AssemblerPredicate<"FeatureAM", "am">;
> +
> +def HasSEL2          : Predicate<"Subtarget->hasSEL2()">,
> +                       AssemblerPredicate<"FeatureSEL2", "sel2">;
> +
> +def HasTLB_RMI          : Predicate<"Subtarget->hasTLB_RMI()">,
> +                       AssemblerPredicate<"FeatureTLB_RMI", "tlb-rmi">;
> +
> +def HasFMI           : Predicate<"Subtarget->hasFMI()">,
> +                       AssemblerPredicate<"FeatureFMI", "fmi">;
> +
> +def HasRCPC_IMMO      : Predicate<"Subtarget->hasRCPCImm()">,
> +                       AssemblerPredicate<"FeatureRCPC_IMMO",
> "rcpc-immo">;
> +
>  def HasFPARMv8       : Predicate<"Subtarget->hasFPARMv8()">,
>                                 AssemblerPredicate<"FeatureFPARMv8",
> "fp-armv8">;
>  def HasNEON          : Predicate<"Subtarget->hasNEON()">,
> @@ -510,7 +558,7 @@ def ISB   : CRmSystemI<barrier_op, 0b110
>  def TSB   : CRmSystemI<barrier_op, 0b010, "tsb", []> {
>    let CRm        = 0b0010;
>    let Inst{12}   = 0;
> -  let Predicates = [HasV8_4a];
> +  let Predicates = [HasTRACEV8_4];
>  }
>  }
>
> @@ -602,7 +650,7 @@ let Uses = [LR], Defs = [LR], CRm = 0b00
>  }
>
>  // These pointer authentication isntructions require armv8.3a
> -let Predicates = [HasV8_3a] in {
> +let Predicates = [HasPA] in {
>    multiclass SignAuth<bits<3> prefix, bits<3> prefix_z, string asm> {
>      def IA   : SignAuthOneData<prefix, 0b00, !strconcat(asm, "ia")>;
>      def IB   : SignAuthOneData<prefix, 0b01, !strconcat(asm, "ib")>;
> @@ -642,17 +690,17 @@ let Predicates = [HasV8_3a] in {
>    defm LDRAA  : AuthLoad<0, "ldraa", simm10Scaled>;
>    defm LDRAB  : AuthLoad<1, "ldrab", simm10Scaled>;
>
> -  // v8.3a floating point conversion for javascript
> -  let Predicates = [HasV8_3a, HasFPARMv8] in
> -  def FJCVTZS  : BaseFPToIntegerUnscaled<0b01, 0b11, 0b110, FPR64, GPR32,
> -                                        "fjcvtzs", []> {
> -    let Inst{31} = 0;
> -  }
> +}
>
> -} // HasV8_3a
> +// v8.3a floating point conversion for javascript
> +let Predicates = [HasJS, HasFPARMv8] in
> +def FJCVTZS  : BaseFPToIntegerUnscaled<0b01, 0b11, 0b110, FPR64, GPR32,
> +                                      "fjcvtzs", []> {
> +  let Inst{31} = 0;
> +} // HasJS, HasFPARMv8
>
>  // v8.4 Flag manipulation instructions
> -let Predicates = [HasV8_4a] in {
> +let Predicates = [HasFMI] in {
>  def CFINV : SimpleSystemI<0, (ins), "cfinv", "">, Sched<[WriteSys]> {
>    let Inst{20-5} = 0b0000001000000000;
>  }
> @@ -660,7 +708,7 @@ def SETF8  : BaseFlagManipulation<0, 0,
>  def SETF16 : BaseFlagManipulation<0, 1, (ins GPR32:$Rn), "setf16",
> "{\t$Rn}">;
>  def RMIF   : FlagRotate<(ins GPR64:$Rn, uimm6:$imm, imm0_15:$mask),
> "rmif",
>                          "{\t$Rn, $imm, $mask}">;
> -} // HasV8_4a
> +} // HasFMI
>
>  // v8.5 flag manipulation instructions
>  let Predicates = [HasAltNZCV], Uses = [NZCV], Defs = [NZCV] in {
> @@ -2629,8 +2677,9 @@ defm STURBB : StoreUnscaled<0b00, 0, 0b0
>                           [(truncstorei8 GPR32z:$Rt,
>                                    (am_unscaled8 GPR64sp:$Rn,
> simm9:$offset))]>;
>
> -// Armv8.4 LDAPR & STLR with Immediate Offset instruction
> -let Predicates = [HasV8_4a] in {
> +// Armv8.4 Weaker Release Consistency enhancements
> +//         LDAPR & STLR with Immediate Offset instructions
> +let Predicates = [HasRCPC_IMMO] in {
>  defm STLURB     : BaseStoreUnscaleV84<"stlurb",  0b00, 0b00, GPR32>;
>  defm STLURH     : BaseStoreUnscaleV84<"stlurh",  0b01, 0b00, GPR32>;
>  defm STLURW     : BaseStoreUnscaleV84<"stlur",   0b10, 0b00, GPR32>;
> @@ -2915,7 +2964,7 @@ def STLXPX : StoreExclusivePair<0b11, 0,
>  def STXPW  : StoreExclusivePair<0b10, 0, 0, 1, 0, GPR32, "stxp">;
>  def STXPX  : StoreExclusivePair<0b11, 0, 0, 1, 0, GPR64, "stxp">;
>
> -let Predicates = [HasV8_1a] in {
> +let Predicates = [HasLOR] in {
>    // v8.1a "Limited Order Region" extension load-acquire instructions
>    def LDLARW  : LoadAcquire   <0b10, 1, 1, 0, 0, GPR32, "ldlar">;
>    def LDLARX  : LoadAcquire   <0b11, 1, 1, 0, 0, GPR64, "ldlar">;
>
> Modified: llvm/trunk/lib/Target/AArch64/AArch64Subtarget.h
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64Subtarget.h?rev=348121&r1=348120&r2=348121&view=diff
>
> ==============================================================================
> --- llvm/trunk/lib/Target/AArch64/AArch64Subtarget.h (original)
> +++ llvm/trunk/lib/Target/AArch64/AArch64Subtarget.h Mon Dec  3 03:08:13
> 2018
> @@ -83,6 +83,33 @@ protected:
>    bool HasFP16FML = false;
>    bool HasSPE = false;
>
> +  // ARMv8.1 extensions
> +  bool HasVH = false;
> +  bool HasPAN = false;
> +  bool HasLOR = false;
> +
> +  // ARMv8.2 extensions
> +  bool HasPsUAO = false;
> +  bool HasPAN_RWV = false;
> +  bool HasCCPP = false;
> +
> +  // ARMv8.3 extensions
> +  bool HasPA = false;
> +  bool HasJS = false;
> +  bool HasCCIDX = false;
> +  bool HasComplxNum = false;
> +
> +  // ARMv8.4 extensions
> +  bool HasNV = false;
> +  bool HasRASv8_4 = false;
> +  bool HasMPAM = false;
> +  bool HasDIT = false;
> +  bool HasTRACEV8_4 = false;
> +  bool HasAM = false;
> +  bool HasSEL2 = false;
> +  bool HasTLB_RMI = false;
> +  bool HasFMI = false;
> +  bool HasRCPC_IMMO = false;
>    // ARMv8.4 Crypto extensions
>    bool HasSM4 = true;
>    bool HasSHA3 = true;
> @@ -349,6 +376,30 @@ public:
>
>    bool useAA() const override { return UseAA; }
>
> +  bool hasVH() const { return HasVH; }
> +  bool hasPAN() const { return HasPAN; }
> +  bool hasLOR() const { return HasLOR; }
> +
> +  bool hasPsUAO() const { return HasPsUAO; }
> +  bool hasPAN_RWV() const { return HasPAN_RWV; }
> +  bool hasCCPP() const { return HasCCPP; }
> +
> +  bool hasPA() const { return HasPA; }
> +  bool hasJS() const { return HasJS; }
> +  bool hasCCIDX() const { return HasCCIDX; }
> +  bool hasComplxNum() const { return HasComplxNum; }
> +
> +  bool hasNV() const { return HasNV; }
> +  bool hasRASv8_4() const { return HasRASv8_4; }
> +  bool hasMPAM() const { return HasMPAM; }
> +  bool hasDIT() const { return HasDIT; }
> +  bool hasTRACEV8_4() const { return HasTRACEV8_4; }
> +  bool hasAM() const { return HasAM; }
> +  bool hasSEL2() const { return HasSEL2; }
> +  bool hasTLB_RMI() const { return HasTLB_RMI; }
> +  bool hasFMI() const { return HasFMI; }
> +  bool hasRCPC_IMMO() const { return HasRCPC_IMMO; }
> +
>    bool useSmallAddressing() const {
>      switch (TLInfo.getTargetMachine().getCodeModel()) {
>        case CodeModel::Kernel:
>
> Modified: llvm/trunk/lib/Target/AArch64/AArch64SystemOperands.td
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64SystemOperands.td?rev=348121&r1=348120&r2=348121&view=diff
>
> ==============================================================================
> --- llvm/trunk/lib/Target/AArch64/AArch64SystemOperands.td (original)
> +++ llvm/trunk/lib/Target/AArch64/AArch64SystemOperands.td Mon Dec  3
> 03:08:13 2018
> @@ -15,6 +15,25 @@
>  include "llvm/TableGen/SearchableTable.td"
>
>
>  //===----------------------------------------------------------------------===//
> +// Features that, for the compiler, only enable system operands and
> PStates
>
> +//===----------------------------------------------------------------------===//
> +
> +def HasCCPP    : Predicate<"Subtarget->hasCCPP()">,
> +                 AssemblerPredicate<"FeatureCCPP", "ccpp">;
> +
> +def HasPAN     : Predicate<"Subtarget->hasPAN()">,
> +                 AssemblerPredicate<"FeaturePAN",
> +                 "ARM v8.1  Privileged Access-Never extension">;
> +
> +def HasPsUAO   : Predicate<"Subtarget->hasPsUAO()">,
> +                 AssemblerPredicate<"FeaturePsUAO",
> +                 "ARM v8.2 UAO PState extension (psuao)">;
> +
> +def HasPAN_RWV : Predicate<"Subtarget->hasPAN_RWV()">,
> +                 AssemblerPredicate<"FeaturePAN_RWV",
> +                 "ARM v8.2 PAN AT S1E1R and AT S1E1W Variation">;
> +
>
> +//===----------------------------------------------------------------------===//
>  // AT (address translate) instruction options.
>
>  //===----------------------------------------------------------------------===//
>
> @@ -45,7 +64,7 @@ def : AT<"S12E1W", 0b100, 0b0111, 0b1000
>  def : AT<"S12E0R", 0b100, 0b0111, 0b1000, 0b110>;
>  def : AT<"S12E0W", 0b100, 0b0111, 0b1000, 0b111>;
>
> -let Requires = [{ {AArch64::HasV8_2aOps} }] in {
> +let Requires = [{ {AArch64::FeaturePAN_RWV} }] in {
>  def : AT<"S1E1RP", 0b000, 0b0111, 0b1001, 0b000>;
>  def : AT<"S1E1WP", 0b000, 0b0111, 0b1001, 0b001>;
>  }
> @@ -102,7 +121,7 @@ def : DC<"CVAU",  0b011, 0b0111, 0b1011,
>  def : DC<"CIVAC", 0b011, 0b0111, 0b1110, 0b001>;
>  def : DC<"CISW",  0b000, 0b0111, 0b1110, 0b010>;
>
> -let Requires = [{ {AArch64::HasV8_2aOps} }] in
> +let Requires = [{ {AArch64::FeatureCCPP} }] in
>  def : DC<"CVAP",  0b011, 0b0111, 0b1100, 0b001>;
>
>  let Requires = [{ {AArch64::FeatureCacheDeepPersist} }] in
> @@ -178,7 +197,7 @@ class TSB<string name, bits<4> encoding>
>    bits<4> Encoding;
>    let Encoding = encoding;
>
> -  code Requires = [{ {AArch64::HasV8_4aOps} }];
> +  code Requires = [{ {AArch64::FeatureTRACEV8_4} }];
>  }
>
>  def : TSB<"csync", 0>;
> @@ -314,13 +333,14 @@ def : PState<"SPSel",   0b00101>;
>  def : PState<"DAIFSet", 0b11110>;
>  def : PState<"DAIFClr", 0b11111>;
>  // v8.1a "Privileged Access Never" extension-specific PStates
> -let Requires = [{ {AArch64::HasV8_1aOps} }] in
> +let Requires = [{ {AArch64::FeaturePAN} }] in
>  def : PState<"PAN",     0b00100>;
> +
>  // v8.2a "User Access Override" extension-specific PStates
> -let Requires = [{ {AArch64::HasV8_2aOps} }] in
> +let Requires = [{ {AArch64::FeaturePsUAO} }] in
>  def : PState<"UAO",     0b00011>;
>  // v8.4a timining insensitivity of data processing instructions
> -let Requires = [{ {AArch64::HasV8_4aOps} }] in
> +let Requires = [{ {AArch64::FeatureDIT} }] in
>  def : PState<"DIT",     0b11010>;
>  // v8.5a Spectre Mitigation
>  let Requires = [{ {AArch64::FeatureSpecRestrict} }] in
> @@ -413,8 +433,9 @@ def : TLBI<"VALE3",        0b110, 0b1000
>  def : TLBI<"VMALLS12E1",   0b100, 0b1000, 0b0111, 0b110, 0>;
>  def : TLBI<"VAALE1",       0b000, 0b1000, 0b0111, 0b111>;
>
> +// Armv8.4-A Translation Lookaside Buffer Instructions (TLBI)
> +let Requires = [{ {AArch64::FeatureTLB_RMI} }] in {
>  // Armv8.4-A Outer Sharable TLB Maintenance instructions:
> -let Requires = [{ {AArch64::HasV8_4aOps} }] in {
>  //                         op1    CRn     CRm     op2
>  def : TLBI<"VMALLE1OS",    0b000, 0b1000, 0b0001, 0b000, 0>;
>  def : TLBI<"VAE1OS",       0b000, 0b1000, 0b0001, 0b001>;
> @@ -465,7 +486,7 @@ def : TLBI<"RVAE3IS",      0b110, 0b1000
>  def : TLBI<"RVALE3IS",     0b110, 0b1000, 0b0010, 0b101>;
>  def : TLBI<"RVAE3OS",      0b110, 0b1000, 0b0101, 0b001>;
>  def : TLBI<"RVALE3OS",     0b110, 0b1000, 0b0101, 0b101>;
> -}
> +} //FeatureTLB_RMI
>
>  // Armv8.5-A Prediction Restriction by Context instruction options:
>  class PRCTX<string name, bits<4> crm> : SearchableTable {
> @@ -540,8 +561,10 @@ def : ROSysReg<"PMCEID0_EL0",        0b1
>  def : ROSysReg<"PMCEID1_EL0",        0b11, 0b011, 0b1001, 0b1100, 0b111>;
>  def : ROSysReg<"MIDR_EL1",           0b11, 0b000, 0b0000, 0b0000, 0b000>;
>  def : ROSysReg<"CCSIDR_EL1",         0b11, 0b001, 0b0000, 0b0000, 0b000>;
> +
> +//v8.3 CCIDX - extending the CCsIDr number of sets
>  def : ROSysReg<"CCSIDR2_EL1",        0b11, 0b001, 0b0000, 0b0000, 0b010> {
> -  let Requires = [{ {AArch64::HasV8_3aOps} }];
> +  let Requires = [{ {AArch64::FeatureCCIDX} }];
>  }
>  def : ROSysReg<"CLIDR_EL1",          0b11, 0b001, 0b0000, 0b0000, 0b001>;
>  def : ROSysReg<"CTR_EL0",            0b11, 0b011, 0b0000, 0b0000, 0b001>;
> @@ -579,9 +602,7 @@ def : ROSysReg<"ID_AA64ISAR0_EL1",    0b
>  def : ROSysReg<"ID_AA64ISAR1_EL1",    0b11, 0b000, 0b0000, 0b0110, 0b001>;
>  def : ROSysReg<"ID_AA64MMFR0_EL1",    0b11, 0b000, 0b0000, 0b0111, 0b000>;
>  def : ROSysReg<"ID_AA64MMFR1_EL1",    0b11, 0b000, 0b0000, 0b0111, 0b001>;
> -def : ROSysReg<"ID_AA64MMFR2_EL1",    0b11, 0b000, 0b0000, 0b0111, 0b010>
> {
> -  let Requires = [{ {AArch64::HasV8_2aOps} }];
> -}
> +def : ROSysReg<"ID_AA64MMFR2_EL1",    0b11, 0b000, 0b0000, 0b0111, 0b010>;
>  def : ROSysReg<"MVFR0_EL1",          0b11, 0b000, 0b0000, 0b0011, 0b000>;
>  def : ROSysReg<"MVFR1_EL1",          0b11, 0b000, 0b0000, 0b0011, 0b001>;
>  def : ROSysReg<"MVFR2_EL1",          0b11, 0b000, 0b0000, 0b0011, 0b010>;
> @@ -651,7 +672,7 @@ def : ROSysReg<"ID_AA64ZFR0_EL1",    0b1
>
>  // v8.1a "Limited Ordering Regions" extension-specific system register
>  //                         Op0    Op1     CRn     CRm    Op2
> -let Requires = [{ {AArch64::HasV8_1aOps} }] in
> +let Requires = [{ {AArch64::FeatureLOR} }] in
>  def : ROSysReg<"LORID_EL1",  0b11, 0b000, 0b1010, 0b0100, 0b111>;
>
>  // v8.2a "RAS extension" registers
> @@ -1185,21 +1206,21 @@ def : RWSysReg<"ICH_LR14_EL2",       0b1
>  def : RWSysReg<"ICH_LR15_EL2",       0b11, 0b100, 0b1100, 0b1101, 0b111>;
>
>  // v8.1a "Privileged Access Never" extension-specific system registers
> -let Requires = [{ {AArch64::HasV8_1aOps} }] in
> +let Requires = [{ {AArch64::FeaturePAN} }] in
>  def : RWSysReg<"PAN", 0b11, 0b000, 0b0100, 0b0010, 0b011>;
>
>  // v8.1a "Limited Ordering Regions" extension-specific system registers
>  //                         Op0    Op1     CRn     CRm    Op2
> -let Requires = [{ {AArch64::HasV8_1aOps} }] in {
> +let Requires = [{ {AArch64::FeatureLOR} }] in {
>  def : RWSysReg<"LORSA_EL1",  0b11, 0b000, 0b1010, 0b0100, 0b000>;
>  def : RWSysReg<"LOREA_EL1",  0b11, 0b000, 0b1010, 0b0100, 0b001>;
>  def : RWSysReg<"LORN_EL1",   0b11, 0b000, 0b1010, 0b0100, 0b010>;
>  def : RWSysReg<"LORC_EL1",   0b11, 0b000, 0b1010, 0b0100, 0b011>;
>  }
>
> -// v8.1a "Virtualization hos extensions" system registers
> +// v8.1a "Virtualization Host extensions" system registers
>  //                              Op0    Op1     CRn     CRm    Op2
> -let Requires = [{ {AArch64::HasV8_1aOps} }] in {
> +let Requires = [{ {AArch64::FeatureVH} }] in {
>  def : RWSysReg<"TTBR1_EL2",       0b11, 0b100, 0b0010, 0b0000, 0b001>;
>  def : RWSysReg<"CONTEXTIDR_EL2",  0b11, 0b100, 0b1101, 0b0000, 0b001>;
>  def : RWSysReg<"CNTHV_TVAL_EL2",  0b11, 0b100, 0b1110, 0b0011, 0b000>;
> @@ -1230,7 +1251,7 @@ def : RWSysReg<"ELR_EL12",        0b11,
>  }
>  // v8.2a registers
>  //                  Op0    Op1     CRn     CRm    Op2
> -let Requires = [{ {AArch64::HasV8_2aOps} }] in
> +let Requires = [{ {AArch64::FeaturePsUAO} }] in
>  def : RWSysReg<"UAO", 0b11, 0b000, 0b0100, 0b0010, 0b100>;
>
>  // v8.2a "Statistical Profiling extension" registers
> @@ -1267,7 +1288,7 @@ def : RWSysReg<"VSESR_EL2",     0b11, 0b
>
>  // v8.3a "Pointer authentication extension" registers
>  //                              Op0    Op1     CRn     CRm    Op2
> -let Requires = [{ {AArch64::HasV8_3aOps} }] in {
> +let Requires = [{ {AArch64::FeaturePA} }] in {
>  def : RWSysReg<"APIAKeyLo_EL1", 0b11, 0b000, 0b0010, 0b0001, 0b000>;
>  def : RWSysReg<"APIAKeyHi_EL1", 0b11, 0b000, 0b0010, 0b0001, 0b001>;
>  def : RWSysReg<"APIBKeyLo_EL1", 0b11, 0b000, 0b0010, 0b0001, 0b010>;
> @@ -1280,8 +1301,8 @@ def : RWSysReg<"APGAKeyLo_EL1", 0b11, 0b
>  def : RWSysReg<"APGAKeyHi_EL1", 0b11, 0b000, 0b0010, 0b0011, 0b001>;
>  }
>
> -let Requires = [{ {AArch64::HasV8_4aOps} }] in {
> -
> +// v8.4 "Secure Exception Level 2 extension"
> +let Requires = [{ {AArch64::FeatureSEL2} }] in {
>  // v8.4a "Virtualization secure second stage translation" registers
>  //                           Op0   Op1    CRn     CRm     Op2
>  def : RWSysReg<"VSTCR_EL2" , 0b11, 0b100, 0b0010, 0b0110, 0b010>;
> @@ -1299,18 +1320,22 @@ def : RWSysReg<"CNTHPS_CTL_EL2",  0b11,
>  // v8.4a "Virtualization debug state" registers
>  //                           Op0   Op1    CRn     CRm     Op2
>  def : RWSysReg<"SDER32_EL2", 0b11, 0b100, 0b0001, 0b0011, 0b001>;
> +} // FeatureSEL2
>
>  // v8.4a RAS registers
> -//                              Op0   Op1    CRn     CRm    Op2
> +//                              Op0   Op1    CRn     CRm     Op2
> +let Requires = [{ {AArch64::FeatureRASv8_4} }] in {
>  def : RWSysReg<"ERXPFGCTL_EL1", 0b11, 0b000, 0b0101, 0b0100, 0b101>;
>  def : RWSysReg<"ERXPFGCDN_EL1", 0b11, 0b000, 0b0101, 0b0100, 0b110>;
>  def : RWSysReg<"ERXTS_EL1",     0b11, 0b000, 0b0101, 0b0101, 0b111>;
>  def : RWSysReg<"ERXMISC2_EL1",  0b11, 0b000, 0b0101, 0b0101, 0b010>;
>  def : RWSysReg<"ERXMISC3_EL1",  0b11, 0b000, 0b0101, 0b0101, 0b011>;
>  def : ROSysReg<"ERXPFGF_EL1",   0b11, 0b000, 0b0101, 0b0100, 0b100>;
> +} // FeatureRASv8_4
>
>  // v8.4a MPAM registers
>  //                             Op0   Op1    CRn     CRm     Op2
> +let Requires = [{ {AArch64::FeatureMPAM} }] in {
>  def : RWSysReg<"MPAM0_EL1",    0b11, 0b000, 0b1010, 0b0101, 0b001>;
>  def : RWSysReg<"MPAM1_EL1",    0b11, 0b000, 0b1010, 0b0101, 0b000>;
>  def : RWSysReg<"MPAM2_EL2",    0b11, 0b100, 0b1010, 0b0101, 0b000>;
> @@ -1327,9 +1352,11 @@ def : RWSysReg<"MPAMVPM5_EL2", 0b11, 0b1
>  def : RWSysReg<"MPAMVPM6_EL2", 0b11, 0b100, 0b1010, 0b0110, 0b110>;
>  def : RWSysReg<"MPAMVPM7_EL2", 0b11, 0b100, 0b1010, 0b0110, 0b111>;
>  def : ROSysReg<"MPAMIDR_EL1",  0b11, 0b000, 0b1010, 0b0100, 0b100>;
> +} //FeatureMPAM
>
> -// v8.4a Activitiy monitor registers
> +// v8.4a Activitiy Monitor registers
>  //                                 Op0   Op1    CRn     CRm     Op2
> +let Requires = [{ {AArch64::FeatureAM} }] in {
>  def : RWSysReg<"AMCR_EL0",         0b11, 0b011, 0b1101, 0b0010, 0b000>;
>  def : ROSysReg<"AMCFGR_EL0",       0b11, 0b011, 0b1101, 0b0010, 0b001>;
>  def : ROSysReg<"AMCGCR_EL0",       0b11, 0b011, 0b1101, 0b0010, 0b010>;
> @@ -1378,6 +1405,7 @@ def : RWSysReg<"AMEVTYPER112_EL0", 0b11,
>  def : RWSysReg<"AMEVTYPER113_EL0", 0b11, 0b011, 0b1101, 0b1111, 0b101>;
>  def : RWSysReg<"AMEVTYPER114_EL0", 0b11, 0b011, 0b1101, 0b1111, 0b110>;
>  def : RWSysReg<"AMEVTYPER115_EL0", 0b11, 0b011, 0b1101, 0b1111, 0b111>;
> +} //FeatureAM
>
>  // v8.4a Trace Extension registers
>  //
> @@ -1386,19 +1414,24 @@ def : RWSysReg<"AMEVTYPER115_EL0", 0b11,
>  // but they are already defined above.
>  //
>  //                                 Op0   Op1    CRn     CRm     Op2
> +let Requires = [{ {AArch64::FeatureTRACEV8_4} }] in {
>  def : RWSysReg<"TRFCR_EL1",        0b11, 0b000, 0b0001, 0b0010, 0b001>;
>  def : RWSysReg<"TRFCR_EL2",        0b11, 0b100, 0b0001, 0b0010, 0b001>;
>  def : RWSysReg<"TRFCR_EL12",       0b11, 0b101, 0b0001, 0b0010, 0b001>;
> +} //FeatureTRACEV8_4
>
>  // v8.4a Timining insensitivity of data processing instructions
> +// DIT: Data Independent Timing instructions
>  //                                 Op0   Op1    CRn     CRm     Op2
> +let Requires = [{ {AArch64::FeatureDIT} }] in {
>  def : RWSysReg<"DIT",              0b11, 0b011, 0b0100, 0b0010, 0b101>;
> +} //FeatureDIT
>
>  // v8.4a Enhanced Support for Nested Virtualization
>  //                                 Op0   Op1    CRn     CRm     Op2
> +let Requires = [{ {AArch64::FeatureNV} }] in {
>  def : RWSysReg<"VNCR_EL2",         0b11, 0b100, 0b0010, 0b0010, 0b000>;
> -
> -} // HasV8_4aOps
> +} //FeatureNV
>
>  // SVE control registers
>  //                                 Op0   Op1    CRn     CRm     Op2
>
> Modified: llvm/trunk/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp?rev=348121&r1=348120&r2=348121&view=diff
>
> ==============================================================================
> --- llvm/trunk/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp (original)
> +++ llvm/trunk/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp Mon Dec
> 3 03:08:13 2018
> @@ -2813,28 +2813,29 @@ static const struct Extension {
>    const char *Name;
>    const FeatureBitset Features;
>  } ExtensionMap[] = {
> -  { "crc",  {AArch64::FeatureCRC} },
> -  { "sm4",  {AArch64::FeatureSM4} },
> -  { "sha3", {AArch64::FeatureSHA3} },
> -  { "sha2", {AArch64::FeatureSHA2} },
> -  { "aes",  {AArch64::FeatureAES} },
> -  { "crypto", {AArch64::FeatureCrypto} },
> -  { "fp", {AArch64::FeatureFPARMv8} },
> -  { "simd", {AArch64::FeatureNEON} },
> -  { "ras", {AArch64::FeatureRAS} },
> -  { "lse", {AArch64::FeatureLSE} },
> -  { "predctrl", {AArch64::FeaturePredCtrl} },
> -  { "ccdp", {AArch64::FeatureCacheDeepPersist} },
> -  { "mte", {AArch64::FeatureMTE} },
> -
> -  // FIXME: Unsupported extensions
> -  { "pan", {} },
> -  { "lor", {} },
> -  { "rdma", {} },
> -  { "profile", {} },
> +    {"crc", {AArch64::FeatureCRC}},
> +    {"sm4", {AArch64::FeatureSM4}},
> +    {"sha3", {AArch64::FeatureSHA3}},
> +    {"sha2", {AArch64::FeatureSHA2}},
> +    {"aes", {AArch64::FeatureAES}},
> +    {"crypto", {AArch64::FeatureCrypto}},
> +    {"fp", {AArch64::FeatureFPARMv8}},
> +    {"simd", {AArch64::FeatureNEON}},
> +    {"ras", {AArch64::FeatureRAS}},
> +    {"lse", {AArch64::FeatureLSE}},
> +    {"predctrl", {AArch64::FeaturePredCtrl}},
> +    {"ccdp", {AArch64::FeatureCacheDeepPersist}},
> +    {"mte", {AArch64::FeatureMTE}},
> +    {"tlb-rmi", {AArch64::FeatureTLB_RMI}},
> +    {"pan-rwv", {AArch64::FeaturePAN_RWV}},
> +    {"ccpp", {AArch64::FeatureCCPP}},
> +    // FIXME: Unsupported extensions
> +    {"pan", {}},
> +    {"lor", {}},
> +    {"rdma", {}},
> +    {"profile", {}},
>  };
>
> -
>  static void setRequiredFeatureString(FeatureBitset FBS, std::string &Str)
> {
>    if (FBS[AArch64::HasV8_1aOps])
>      Str += "ARMv8.1a";
>
> Modified: llvm/trunk/test/MC/AArch64/armv8.2a-at.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/AArch64/armv8.2a-at.s?rev=348121&r1=348120&r2=348121&view=diff
>
> ==============================================================================
> --- llvm/trunk/test/MC/AArch64/armv8.2a-at.s (original)
> +++ llvm/trunk/test/MC/AArch64/armv8.2a-at.s Mon Dec  3 03:08:13 2018
> @@ -1,9 +1,11 @@
> -// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.2a < %s | FileCheck %s
> -// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=-v8.2a < %s 2>&1 | FileCheck %s --check-prefix=ERROR
> +// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.2a %s -o - | FileCheck %s
> +// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=-v8.2a,+pan-rwv %s -o - | FileCheck %s
> +// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=-v8.2a %s -o - 2>&1 | FileCheck %s --check-prefix=ERROR
> +// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.2a,-pan-rwv %s -o - 2>&1 | FileCheck %s --check-prefix=ERROR
>
>    at s1e1rp, x1
>    at s1e1wp, x2
>  // CHECK: at      s1e1rp, x1              // encoding:
> [0x01,0x79,0x08,0xd5]
>  // CHECK: at      s1e1wp, x2              // encoding:
> [0x22,0x79,0x08,0xd5]
> -// ERROR: error: AT S1E1RP requires ARMv8.2a
> -// ERROR: error: AT S1E1WP requires ARMv8.2a
> +// ERROR: error: AT S1E1RP requires pan-rwv
> +// ERROR: error: AT S1E1WP requires pan-rwv
>
> Removed: llvm/trunk/test/MC/AArch64/armv8.2a-mmfr2.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/AArch64/armv8.2a-mmfr2.s?rev=348120&view=auto
>
> ==============================================================================
> --- llvm/trunk/test/MC/AArch64/armv8.2a-mmfr2.s (original)
> +++ llvm/trunk/test/MC/AArch64/armv8.2a-mmfr2.s (removed)
> @@ -1,6 +0,0 @@
> -// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.2a < %s | FileCheck %s
> -// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=-v8.2a < %s 2>&1 | FileCheck %s --check-prefix=ERROR
> -
> -  mrs x3, id_aa64mmfr2_el1
> -// CHECK: mrs x3, ID_AA64MMFR2_EL1       // encoding:
> [0x43,0x07,0x38,0xd5]
> -// ERROR: error: expected readable system register
>
> Modified: llvm/trunk/test/MC/AArch64/armv8.2a-persistent-memory.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/AArch64/armv8.2a-persistent-memory.s?rev=348121&r1=348120&r2=348121&view=diff
>
> ==============================================================================
> --- llvm/trunk/test/MC/AArch64/armv8.2a-persistent-memory.s (original)
> +++ llvm/trunk/test/MC/AArch64/armv8.2a-persistent-memory.s Mon Dec  3
> 03:08:13 2018
> @@ -1,6 +1,7 @@
> -// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.2a < %s | FileCheck %s
> -// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=-v8.2a < %s 2>&1 | FileCheck %s --check-prefix=ERROR
> +// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.2a -o - %s | FileCheck %s
> +// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+ccpp -o - %s | FileCheck %s
> +// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=-v8.2a -o - %s 2>&1 | FileCheck %s --check-prefix=ERROR
>
>    dc cvap, x7
>  // CHECK: dc cvap, x7   // encoding: [0x27,0x7c,0x0b,0xd5]
> -// ERROR: error: DC CVAP requires ARMv8.2a
> +// ERROR: error: DC CVAP requires ccpp
>
> Modified: llvm/trunk/test/MC/AArch64/armv8.3a-complex.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/AArch64/armv8.3a-complex.s?rev=348121&r1=348120&r2=348121&view=diff
>
> ==============================================================================
> --- llvm/trunk/test/MC/AArch64/armv8.3a-complex.s (original)
> +++ llvm/trunk/test/MC/AArch64/armv8.3a-complex.s Mon Dec  3 03:08:13 2018
> @@ -1,43 +1,44 @@
> -// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.3a,-fullfp16 < %s 2>%t | FileCheck %s --check-prefix=CHECK
> --check-prefix=NO-FP16
> +// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.3a,-fullfp16 -o - %s 2>%t | \
> +// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=NO-FP16
>  // RUN: FileCheck --check-prefix=STDERR --check-prefix=STDERR-NO-FP16 %s
> < %t
> -// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.3a,+fullfp16 < %s 2>%t | FileCheck %s --check-prefix=CHECK
> --check-prefix=FP16
> +// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.3a,+fullfp16 -o - %s 2>%t | \
> +// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=FP16
>  // RUN: FileCheck --check-prefix=STDERR --check-prefix=STDERR-FP16 %s < %t
> -// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.2a,-v8.3a,+fullfp16 < %s 2>&1 | FileCheck %s
> --check-prefix=NO-V83A
> -
> -
> +// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.2a,-v8.3a,+fullfp16,+complxnum -o - %s 2>&1 | \
> +// RUN: FileCheck %s --check-prefix=FP16
>  // ==== FCMLA vector ====
>  // Types
>    fcmla v0.4h, v1.4h, v2.4h, #0
>  // FP16: fcmla   v0.4h, v1.4h, v2.4h, #0 // encoding:
> [0x20,0xc4,0x42,0x2e]
>  // STDERR-NO-FP16: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> fullfp16
> -// NO-V83A: :[[@LINE-3]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-3]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>    fcmla v0.8h, v1.8h, v2.8h, #0
>  // FP16: fcmla   v0.8h, v1.8h, v2.8h, #0 // encoding:
> [0x20,0xc4,0x42,0x6e]
>  // STDERR-NO-FP16: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> fullfp16
> -// NO-V83A: :[[@LINE-3]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-3]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>    fcmla v0.2s, v1.2s, v2.2s, #0
>  // CHECK: fcmla   v0.2s, v1.2s, v2.2s, #0 // encoding:
> [0x20,0xc4,0x82,0x2e]
> -// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>    fcmla v0.4s, v1.4s, v2.4s, #0
>  // CHECK: fcmla   v0.4s, v1.4s, v2.4s, #0 // encoding:
> [0x20,0xc4,0x82,0x6e]
> -// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>    fcmla v0.2d, v1.2d, v2.2d, #0
>  // CHECK: fcmla   v0.2d, v1.2d, v2.2d, #0 // encoding:
> [0x20,0xc4,0xc2,0x6e]
> -// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>
>  // Rotations
>    fcmla v0.2s, v1.2s, v2.2s, #0
>  // CHECK: fcmla   v0.2s, v1.2s, v2.2s, #0 // encoding:
> [0x20,0xc4,0x82,0x2e]
> -// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>    fcmla v0.2s, v1.2s, v2.2s, #90
>  // CHECK: fcmla   v0.2s, v1.2s, v2.2s, #90 // encoding:
> [0x20,0xcc,0x82,0x2e]
> -// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>    fcmla v0.2s, v1.2s, v2.2s, #180
>  // CHECK: fcmla   v0.2s, v1.2s, v2.2s, #180 // encoding:
> [0x20,0xd4,0x82,0x2e]
> -// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>    fcmla v0.2s, v1.2s, v2.2s, #270
>  // CHECK: fcmla   v0.2s, v1.2s, v2.2s, #270 // encoding:
> [0x20,0xdc,0x82,0x2e]
> -// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>
>  // Invalid rotations
>    fcmla v0.2s, v1.2s, v2.2s, #1
> @@ -52,28 +53,28 @@
>    fcadd v0.4h, v1.4h, v2.4h, #90
>  // FP16: fcadd   v0.4h, v1.4h, v2.4h, #90 // encoding:
> [0x20,0xe4,0x42,0x2e]
>  // STDERR-NO-FP16: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> fullfp16
> -// NO-V83A: :[[@LINE-3]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-3]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>    fcadd v0.8h, v1.8h, v2.8h, #90
>  // FP16: fcadd   v0.8h, v1.8h, v2.8h, #90 // encoding:
> [0x20,0xe4,0x42,0x6e]
>  // STDERR-NO-FP16: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> fullfp16
> -// NO-V83A: :[[@LINE-3]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-3]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>    fcadd v0.2s, v1.2s, v2.2s, #90
>  // CHECK: fcadd   v0.2s, v1.2s, v2.2s, #90 // encoding:
> [0x20,0xe4,0x82,0x2e]
> -// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>    fcadd v0.4s, v1.4s, v2.4s, #90
>  // CHECK: fcadd   v0.4s, v1.4s, v2.4s, #90 // encoding:
> [0x20,0xe4,0x82,0x6e]
> -// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>    fcadd v0.2d, v1.2d, v2.2d, #90
>  // CHECK: fcadd   v0.2d, v1.2d, v2.2d, #90 // encoding:
> [0x20,0xe4,0xc2,0x6e]
> -// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>
>  // Rotations
>    fcadd v0.2s, v1.2s, v2.2s, #90
>  // CHECK: fcadd   v0.2s, v1.2s, v2.2s, #90 // encoding:
> [0x20,0xe4,0x82,0x2e]
> -// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>    fcadd v0.2s, v1.2s, v2.2s, #270
>  // CHECK: fcadd   v0.2s, v1.2s, v2.2s, #270 // encoding:
> [0x20,0xf4,0x82,0x2e]
> -// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>
>  // Invalid rotations
>    fcadd v0.2s, v1.2s, v2.2s, #1
> @@ -92,17 +93,17 @@
>    fcmla v0.4h, v1.4h, v2.h[0], #0
>  // FP16: fcmla   v0.4h, v1.4h, v2.h[0], #0 // encoding:
> [0x20,0x10,0x42,0x2f]
>  // STDERR-NO-FP16: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> fullfp16
> -// NO-V83A: :[[@LINE-3]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-3]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>    fcmla v0.8h, v1.8h, v2.h[0], #0
>  // FP16: fcmla   v0.8h, v1.8h, v2.h[0], #0 // encoding:
> [0x20,0x10,0x42,0x6f]
>  // STDERR-NO-FP16: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> fullfp16
> -// NO-V83A: :[[@LINE-3]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-3]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>    fcmla v0.2s, v1.2s, v2.s[0], #0
>  // STDERR: :[[@LINE-1]]:{{[0-9]*}}: error: invalid operand for instruction
>  // NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: invalid operand for
> instruction
>    fcmla v0.4s, v1.4s, v2.s[0], #0
>  // CHECK: fcmla   v0.4s, v1.4s, v2.s[0], #0 // encoding:
> [0x20,0x10,0x82,0x6f]
> -// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>    fcmla v0.2d, v1.2d, v2.d[0], #0
>  // STDERR: :[[@LINE-1]]:{{[0-9]*}}: error: invalid operand for instruction
>  // NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: invalid operand for
> instruction
> @@ -110,26 +111,26 @@
>  // Rotations
>    fcmla v0.4s, v1.4s, v2.s[0], #90
>  // CHECK: fcmla   v0.4s, v1.4s, v2.s[0], #90 // encoding:
> [0x20,0x30,0x82,0x6f]
> -// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>    fcmla v0.4s, v1.4s, v2.s[0], #180
>  // CHECK: fcmla   v0.4s, v1.4s, v2.s[0], #180 // encoding:
> [0x20,0x50,0x82,0x6f]
> -// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>    fcmla v0.4s, v1.4s, v2.s[0], #270
>  // CHECK: fcmla   v0.4s, v1.4s, v2.s[0], #270 // encoding:
> [0x20,0x70,0x82,0x6f]
> -// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>
>  // Valid indices
>    fcmla v0.4h, v1.4h, v2.h[1], #0
>  // FP16: fcmla   v0.4h, v1.4h, v2.h[1], #0 // encoding:
> [0x20,0x10,0x62,0x2f]
>  // STDERR-NO-FP16: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> fullfp16
> -// NO-V83A: :[[@LINE-3]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-3]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>    fcmla v0.8h, v1.8h, v2.h[3], #0
>  // FP16: fcmla   v0.8h, v1.8h, v2.h[3], #0 // encoding:
> [0x20,0x18,0x62,0x6f]
>  // STDERR-NO-FP16: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> fullfp16
> -// NO-V83A: :[[@LINE-3]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-3]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>    fcmla v0.4s, v1.4s, v2.s[1], #0
>  // CHECK: fcmla   v0.4s, v1.4s, v2.s[1], #0 // encoding:
> [0x20,0x18,0x82,0x6f]
> -// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires: armv8.3a
> +// NO-V83A: :[[@LINE-2]]:{{[0-9]*}}: error: instruction requires:
> complxnum
>
>  // Invalid indices
>    fcmla v0.4h, v1.4h, v2.h[2], #0
>
> Modified: llvm/trunk/test/MC/AArch64/armv8.3a-js.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/AArch64/armv8.3a-js.s?rev=348121&r1=348120&r2=348121&view=diff
>
> ==============================================================================
> --- llvm/trunk/test/MC/AArch64/armv8.3a-js.s (original)
> +++ llvm/trunk/test/MC/AArch64/armv8.3a-js.s Mon Dec  3 03:08:13 2018
> @@ -1,10 +1,20 @@
> -// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.3a < %s 2>&1 | FileCheck %s
> -// RUN: not llvm-mc -triple aarch64-none-linux-gnu < %s 2> %t
> -// RUN: FileCheck --check-prefix=CHECK-REQ < %t %s
> -// RUN: not llvm-mc -triple aarch64-none-linux-gnu
> -mattr=+v8.3a,-fp-armv8 < %s 2> %t
> -// RUN: FileCheck --check-prefix=CHECK-NOFP < %t %s
> +// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.3a -o - %s 2>&1 | \
> +// RUN: FileCheck %s
> +
> +// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+jsconv -o - %s 2>&1 | \
> +// RUN: FileCheck %s
> +
> +// RUN: not llvm-mc -triple aarch64-none-linux-gnu %s 2>&1 | \
> +// RUN: FileCheck --check-prefix=CHECK-JS %s
> +
> +// RUN: not llvm-mc -triple aarch64-none-linux-gnu
> -mattr=+jsconv,-fp-armv8 -o - %s 2>&1 |\
> +// RUN: FileCheck --check-prefix=CHECK-REQ %s
>
>    fjcvtzs w0, d0
>  // CHECK: fjcvtzs w0, d0    // encoding: [0x00,0x00,0x7e,0x1e]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> -// CHECK-NOFP: error: instruction requires: fp-armv8
> +
> +// CHECK-JS: error: instruction requires: jsconv
> +
> +// NOJS: error: instruction requires: jsconv
> +
> +// CHECK-REQ: error: instruction requires: fp-armv8 jsconv
>
> Modified: llvm/trunk/test/MC/AArch64/armv8.3a-signed-pointer.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/AArch64/armv8.3a-signed-pointer.s?rev=348121&r1=348120&r2=348121&view=diff
>
> ==============================================================================
> --- llvm/trunk/test/MC/AArch64/armv8.3a-signed-pointer.s (original)
> +++ llvm/trunk/test/MC/AArch64/armv8.3a-signed-pointer.s Mon Dec  3
> 03:08:13 2018
> @@ -1,7 +1,11 @@
> -// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.3a < %s 2> %t | FileCheck %s
> -// RUN: not llvm-mc -triple aarch64-none-linux-gnu < %s 2> %t
> -// RUN: FileCheck --check-prefix=CHECK-REQ %s < %t
> +// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.3a -o - %s 2>&1 | \
> +// RUN: FileCheck --check-prefixes=CHECK,ALL %s
>
> +// RUN: not llvm-mc -triple aarch64-none-linux-gnu %s -o - > %t.1 2>%t.2
> +// RUN: FileCheck --check-prefixes=ALL,NOENC %s < %t.1
> +// RUN: FileCheck --check-prefix=CHECK-REQ %s < %t.2
> +
> +// ALL: .text
>    mrs x0, apiakeylo_el1
>    mrs x0, apiakeyhi_el1
>    mrs x0, apibkeylo_el1
> @@ -12,28 +16,39 @@
>    mrs x0, apdbkeyhi_el1
>    mrs x0, apgakeylo_el1
>    mrs x0, apgakeyhi_el1
> -
> -// CHECK: mrs x0, APIAKeyLo_EL1     // encoding: [0x00,0x21,0x38,0xd5]
> -// CHECK: mrs x0, APIAKeyHi_EL1     // encoding: [0x20,0x21,0x38,0xd5]
> -// CHECK: mrs x0, APIBKeyLo_EL1     // encoding: [0x40,0x21,0x38,0xd5]
> -// CHECK: mrs x0, APIBKeyHi_EL1     // encoding: [0x60,0x21,0x38,0xd5]
> -// CHECK: mrs x0, APDAKeyLo_EL1     // encoding: [0x00,0x22,0x38,0xd5]
> -// CHECK: mrs x0, APDAKeyHi_EL1     // encoding: [0x20,0x22,0x38,0xd5]
> -// CHECK: mrs x0, APDBKeyLo_EL1     // encoding: [0x40,0x22,0x38,0xd5]
> -// CHECK: mrs x0, APDBKeyHi_EL1     // encoding: [0x60,0x22,0x38,0xd5]
> -// CHECK: mrs x0, APGAKeyLo_EL1     // encoding: [0x00,0x23,0x38,0xd5]
> -// CHECK: mrs x0, APGAKeyHi_EL1     // encoding: [0x20,0x23,0x38,0xd5]
> +// ALL-EMPTY:
> +// ALL-EMPTY:
> +// CHECK-NEXT: mrs x0, APIAKeyLo_EL1     // encoding:
> [0x00,0x21,0x38,0xd5]
> +// CHECK-NEXT: mrs x0, APIAKeyHi_EL1     // encoding:
> [0x20,0x21,0x38,0xd5]
> +// CHECK-NEXT: mrs x0, APIBKeyLo_EL1     // encoding:
> [0x40,0x21,0x38,0xd5]
> +// CHECK-NEXT: mrs x0, APIBKeyHi_EL1     // encoding:
> [0x60,0x21,0x38,0xd5]
> +// CHECK-NEXT: mrs x0, APDAKeyLo_EL1     // encoding:
> [0x00,0x22,0x38,0xd5]
> +// CHECK-NEXT: mrs x0, APDAKeyHi_EL1     // encoding:
> [0x20,0x22,0x38,0xd5]
> +// CHECK-NEXT: mrs x0, APDBKeyLo_EL1     // encoding:
> [0x40,0x22,0x38,0xd5]
> +// CHECK-NEXT: mrs x0, APDBKeyHi_EL1     // encoding:
> [0x60,0x22,0x38,0xd5]
> +// CHECK-NEXT: mrs x0, APGAKeyLo_EL1     // encoding:
> [0x00,0x23,0x38,0xd5]
> +// CHECK-NEXT: mrs x0, APGAKeyHi_EL1     // encoding:
> [0x20,0x23,0x38,0xd5]
>
>  // CHECK-REQ: error: expected readable system register
> +// CHECK-REQ-NEXT: mrs x0, apiakeylo_el1
>  // CHECK-REQ: error: expected readable system register
> +// CHECK-REQ-NEXT: mrs x0, apiakeyhi_el1
>  // CHECK-REQ: error: expected readable system register
> +// CHECK-REQ-NEXT: mrs x0, apibkeylo_el1
>  // CHECK-REQ: error: expected readable system register
> +// CHECK-REQ-NEXT: mrs x0, apibkeyhi_el1
>  // CHECK-REQ: error: expected readable system register
> +// CHECK-REQ-NEXT: mrs x0, apdakeylo_el1
>  // CHECK-REQ: error: expected readable system register
> +// CHECK-REQ-NEXT: mrs x0, apdakeyhi_el1
>  // CHECK-REQ: error: expected readable system register
> +// CHECK-REQ-NEXT: mrs x0, apdbkeylo_el1
>  // CHECK-REQ: error: expected readable system register
> +// CHECK-REQ-NEXT: mrs x0, apdbkeyhi_el1
>  // CHECK-REQ: error: expected readable system register
> +// CHECK-REQ-NEXT: mrs x0, apgakeylo_el1
>  // CHECK-REQ: error: expected readable system register
> +// CHECK-REQ-NEXT: mrs x0, apgakeyhi_el1
>
>    msr apiakeylo_el1, x0
>    msr apiakeyhi_el1, x0
> @@ -45,191 +60,249 @@
>    msr apdbkeyhi_el1, x0
>    msr apgakeylo_el1, x0
>    msr apgakeyhi_el1, x0
> -
> -// CHECK: msr APIAKeyLo_EL1, x0     // encoding: [0x00,0x21,0x18,0xd5]
> -// CHECK: msr APIAKeyHi_EL1, x0     // encoding: [0x20,0x21,0x18,0xd5]
> -// CHECK: msr APIBKeyLo_EL1, x0     // encoding: [0x40,0x21,0x18,0xd5]
> -// CHECK: msr APIBKeyHi_EL1, x0     // encoding: [0x60,0x21,0x18,0xd5]
> -// CHECK: msr APDAKeyLo_EL1, x0     // encoding: [0x00,0x22,0x18,0xd5]
> -// CHECK: msr APDAKeyHi_EL1, x0     // encoding: [0x20,0x22,0x18,0xd5]
> -// CHECK: msr APDBKeyLo_EL1, x0     // encoding: [0x40,0x22,0x18,0xd5]
> -// CHECK: msr APDBKeyHi_EL1, x0     // encoding: [0x60,0x22,0x18,0xd5]
> -// CHECK: msr APGAKeyLo_EL1, x0     // encoding: [0x00,0x23,0x18,0xd5]
> -// CHECK: msr APGAKeyHi_EL1, x0     // encoding: [0x20,0x23,0x18,0xd5]
> +// ALL-EMPTY:
> +// ALL-EMPTY:
> +// CHECK-NEXT: msr APIAKeyLo_EL1, x0     // encoding:
> [0x00,0x21,0x18,0xd5]
> +// CHECK-NEXT: msr APIAKeyHi_EL1, x0     // encoding:
> [0x20,0x21,0x18,0xd5]
> +// CHECK-NEXT: msr APIBKeyLo_EL1, x0     // encoding:
> [0x40,0x21,0x18,0xd5]
> +// CHECK-NEXT: msr APIBKeyHi_EL1, x0     // encoding:
> [0x60,0x21,0x18,0xd5]
> +// CHECK-NEXT: msr APDAKeyLo_EL1, x0     // encoding:
> [0x00,0x22,0x18,0xd5]
> +// CHECK-NEXT: msr APDAKeyHi_EL1, x0     // encoding:
> [0x20,0x22,0x18,0xd5]
> +// CHECK-NEXT: msr APDBKeyLo_EL1, x0     // encoding:
> [0x40,0x22,0x18,0xd5]
> +// CHECK-NEXT: msr APDBKeyHi_EL1, x0     // encoding:
> [0x60,0x22,0x18,0xd5]
> +// CHECK-NEXT: msr APGAKeyLo_EL1, x0     // encoding:
> [0x00,0x23,0x18,0xd5]
> +// CHECK-NEXT: msr APGAKeyHi_EL1, x0     // encoding:
> [0x20,0x23,0x18,0xd5]
>
>  // CHECK-REQ: error: expected writable system register or pstate
> +// CHECK-REQ-NEXT:  msr apiakeylo_el1, x0
>  // CHECK-REQ: error: expected writable system register or pstate
> +// CHECK-REQ-NEXT:  msr apiakeyhi_el1, x0
>  // CHECK-REQ: error: expected writable system register or pstate
> +// CHECK-REQ-NEXT:  msr apibkeylo_el1, x0
>  // CHECK-REQ: error: expected writable system register or pstate
> +// CHECK-REQ-NEXT:  msr apibkeyhi_el1, x0
>  // CHECK-REQ: error: expected writable system register or pstate
> +// CHECK-REQ-NEXT:  msr apdakeylo_el1, x0
>  // CHECK-REQ: error: expected writable system register or pstate
> +// CHECK-REQ-NEXT:  msr apdakeyhi_el1, x0
>  // CHECK-REQ: error: expected writable system register or pstate
> +// CHECK-REQ-NEXT:  msr apdbkeylo_el1, x0
>  // CHECK-REQ: error: expected writable system register or pstate
> +// CHECK-REQ-NEXT:  msr apdbkeyhi_el1, x0
>  // CHECK-REQ: error: expected writable system register or pstate
> +// CHECK-REQ-NEXT:  msr apgakeylo_el1, x0
>  // CHECK-REQ: error: expected writable system register or pstate
> +// CHECK-REQ-NEXT:  msr apgakeyhi_el1, x0
>
> +// ALL-EMPTY:
> +// ALL-EMPTY:
>    paciasp
> -// CHECK: paciasp        // encoding: [0x3f,0x23,0x03,0xd5]
> -// CHECK-REQ-NOT: error: instruction requires: armv8.3a
> +// CHECK-NEXT: paciasp        // encoding: [0x3f,0x23,0x03,0xd5]
> +// NOENC-NEXT: paciasp
>    autiasp
> -// CHECK: autiasp        // encoding: [0xbf,0x23,0x03,0xd5]
> -// CHECK-REQ-NOT: error: instruction requires: armv8.3a
> +// CHECK-NEXT: autiasp        // encoding: [0xbf,0x23,0x03,0xd5]
> +// NOENC-NEXT: autiasp
>    paciaz
> -// CHECK: paciaz         // encoding: [0x1f,0x23,0x03,0xd5]
> -// CHECK-REQ-NOT: error: instruction requires: armv8.3a
> +// CHECK-NEXT: paciaz         // encoding: [0x1f,0x23,0x03,0xd5]
> +// NOENC-NEXT: paciaz
>    autiaz
> -// CHECK: autiaz         // encoding: [0x9f,0x23,0x03,0xd5]
> -// CHECK-REQ-NOT: error: instruction requires: armv8.3a
> +// CHECK-NEXT: autiaz         // encoding: [0x9f,0x23,0x03,0xd5]
> +// NOENC-NEXT: autiaz
>    pacia1716
> -// CHECK: pacia1716      // encoding: [0x1f,0x21,0x03,0xd5]
> -// CHECK-REQ-NOT: error: instruction requires: armv8.3a
> +// CHECK-NEXT: pacia1716      // encoding: [0x1f,0x21,0x03,0xd5]
> +// NOENC-NEXT: pacia1716
>    autia1716
> -// CHECK: autia1716      // encoding: [0x9f,0x21,0x03,0xd5]
> -// CHECK-REQ-NOT: error: instruction requires: armv8.3a
> +// CHECK-NEXT: autia1716      // encoding: [0x9f,0x21,0x03,0xd5]
> +// NOENC-NEXT: autia1716
>    pacibsp
> -// CHECK: pacibsp        // encoding: [0x7f,0x23,0x03,0xd5]
> -// CHECK-REQ-NOT: error: instruction requires: armv8.3a
> +// CHECK-NEXT: pacibsp        // encoding: [0x7f,0x23,0x03,0xd5]
> +// NOENC-NEXT: pacibsp
>    autibsp
> -// CHECK: autibsp        // encoding: [0xff,0x23,0x03,0xd5]
> -// CHECK-REQ-NOT: error: instruction requires: armv8.3a
> +// CHECK-NEXT: autibsp        // encoding: [0xff,0x23,0x03,0xd5]
> +// NOENC-NEXT: autibsp
>    pacibz
> -// CHECK: pacibz         // encoding: [0x5f,0x23,0x03,0xd5]
> -// CHECK-REQ-NOT: error: instruction requires: armv8.3a
> +// CHECK-NEXT: pacibz         // encoding: [0x5f,0x23,0x03,0xd5]
> +// NOENC-NEXT: pacibz
>    autibz
> -// CHECK: autibz         // encoding: [0xdf,0x23,0x03,0xd5]
> -// CHECK-REQ-NOT: error: instruction requires: armv8.3a
> +// CHECK-NEXT: autibz         // encoding: [0xdf,0x23,0x03,0xd5]
> +// NOENC-NEXT: autibz
>    pacib1716
> -// CHECK: pacib1716      // encoding: [0x5f,0x21,0x03,0xd5]
> -// CHECK-REQ-NOT: error: instruction requires: armv8.3a
> +// CHECK-NEXT: pacib1716      // encoding: [0x5f,0x21,0x03,0xd5]
> +// NOENC-NEXT: pacib1716
>    autib1716
> -// CHECK: autib1716      // encoding: [0xdf,0x21,0x03,0xd5]
> -// CHECK-REQ-NOT: error: instruction requires: armv8.3a
> +// CHECK-NEXT: autib1716      // encoding: [0xdf,0x21,0x03,0xd5]
> +// NOENC-NEXT: autib1716
>    xpaclri
> -// CHECK: xpaclri           // encoding: [0xff,0x20,0x03,0xd5]
> -// CHECK-REQ-NOT: error: instruction requires: armv8.3a
> +// CHECK-NEXT: xpaclri           // encoding: [0xff,0x20,0x03,0xd5]
> +// NOENC-NEXT: xpaclri
>
> +// ALL-EMPTY:
>    pacia x0, x1
> -// CHECK: pacia x0, x1     // encoding: [0x20,0x00,0xc1,0xda]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: pacia x0, x1     // encoding: [0x20,0x00,0xc1,0xda]
> +// CHECK-REQ-NEXT:      ^
> +// CHECK-REQ-NEXT: error: instruction requires: pa
> +// CHECK-REQ-NEXT: pacia x0, x1
>    autia x0, x1
> -// CHECK: autia x0, x1     // encoding: [0x20,0x10,0xc1,0xda]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: autia x0, x1     // encoding: [0x20,0x10,0xc1,0xda]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT: autia x0, x1
>    pacda x0, x1
> -// CHECK: pacda x0, x1     // encoding: [0x20,0x08,0xc1,0xda]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: pacda x0, x1     // encoding: [0x20,0x08,0xc1,0xda]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  pacda x0, x1
>    autda x0, x1
> -// CHECK: autda x0, x1     // encoding: [0x20,0x18,0xc1,0xda]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: autda x0, x1     // encoding: [0x20,0x18,0xc1,0xda]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  autda x0, x1
>    pacib x0, x1
> -// CHECK: pacib x0, x1     // encoding: [0x20,0x04,0xc1,0xda]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: pacib x0, x1     // encoding: [0x20,0x04,0xc1,0xda]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  pacib x0, x1
>    autib x0, x1
> -// CHECK: autib x0, x1     // encoding: [0x20,0x14,0xc1,0xda]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: autib x0, x1     // encoding: [0x20,0x14,0xc1,0xda]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  autib x0, x1
>    pacdb x0, x1
> -// CHECK: pacdb x0, x1     // encoding: [0x20,0x0c,0xc1,0xda]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: pacdb x0, x1     // encoding: [0x20,0x0c,0xc1,0xda]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  pacdb x0, x1
>    autdb x0, x1
> -// CHECK: autdb x0, x1     // encoding: [0x20,0x1c,0xc1,0xda]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: autdb x0, x1     // encoding: [0x20,0x1c,0xc1,0xda]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  autdb x0, x1
>    pacga x0, x1, x2
> -// CHECK: pacga x0, x1, x2  // encoding: [0x20,0x30,0xc2,0x9a]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: pacga x0, x1, x2  // encoding: [0x20,0x30,0xc2,0x9a]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  pacga x0, x1, x2
>    paciza x0
> -// CHECK: paciza x0         // encoding: [0xe0,0x23,0xc1,0xda]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: paciza x0         // encoding: [0xe0,0x23,0xc1,0xda]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  paciza x0
>    autiza x0
> -// CHECK: autiza x0         // encoding: [0xe0,0x33,0xc1,0xda]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: autiza x0         // encoding: [0xe0,0x33,0xc1,0xda]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  autiza x0
>    pacdza x0
> -// CHECK: pacdza x0         // encoding: [0xe0,0x2b,0xc1,0xda]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: pacdza x0         // encoding: [0xe0,0x2b,0xc1,0xda]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  pacdza x0
>    autdza x0
> -// CHECK: autdza x0         // encoding: [0xe0,0x3b,0xc1,0xda]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: autdza x0         // encoding: [0xe0,0x3b,0xc1,0xda]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  autdza x0
>    pacizb x0
> -// CHECK: pacizb x0         // encoding: [0xe0,0x27,0xc1,0xda]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: pacizb x0         // encoding: [0xe0,0x27,0xc1,0xda]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  pacizb x0
>    autizb x0
> -// CHECK: autizb x0         // encoding: [0xe0,0x37,0xc1,0xda]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: autizb x0         // encoding: [0xe0,0x37,0xc1,0xda]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  autizb x0
>    pacdzb x0
> -// CHECK: pacdzb x0         // encoding: [0xe0,0x2f,0xc1,0xda]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: pacdzb x0         // encoding: [0xe0,0x2f,0xc1,0xda]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  pacdzb x0
>    autdzb x0
> -// CHECK: autdzb x0         // encoding: [0xe0,0x3f,0xc1,0xda]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: autdzb x0         // encoding: [0xe0,0x3f,0xc1,0xda]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  autdzb x0
>    xpaci x0
> -// CHECK: xpaci x0          // encoding: [0xe0,0x43,0xc1,0xda]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: xpaci x0          // encoding: [0xe0,0x43,0xc1,0xda]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  xpaci x0
>    xpacd x0
> -// CHECK: xpacd x0          // encoding: [0xe0,0x47,0xc1,0xda]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: xpacd x0          // encoding: [0xe0,0x47,0xc1,0xda]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  xpacd x0
>
>    braa x0, x1
> -// CHECK: braa x0, x1       // encoding: [0x01,0x08,0x1f,0xd7]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-EMPTY:
> +// CHECK-NEXT: braa x0, x1       // encoding: [0x01,0x08,0x1f,0xd7]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  braa x0, x1
>    brab x0, x1
> -// CHECK: brab x0, x1       // encoding: [0x01,0x0c,0x1f,0xd7]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: brab x0, x1       // encoding: [0x01,0x0c,0x1f,0xd7]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  brab x0, x1
>    blraa x0, x1
> -// CHECK: blraa x0, x1      // encoding: [0x01,0x08,0x3f,0xd7]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: blraa x0, x1      // encoding: [0x01,0x08,0x3f,0xd7]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  blraa x0, x1
>    blrab x0, x1
> -// CHECK: blrab x0, x1      // encoding: [0x01,0x0c,0x3f,0xd7]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: blrab x0, x1      // encoding: [0x01,0x0c,0x3f,0xd7]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  blrab x0, x1
>
>    braaz x0
> -// CHECK: braaz x0          // encoding: [0x1f,0x08,0x1f,0xd6]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-EMPTY:
> +// CHECK-NEXT: braaz x0          // encoding: [0x1f,0x08,0x1f,0xd6]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  braaz x0
>    brabz x0
> -// CHECK: brabz x0          // encoding: [0x1f,0x0c,0x1f,0xd6]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: brabz x0          // encoding: [0x1f,0x0c,0x1f,0xd6]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  brabz x0
>    blraaz x0
> -// CHECK: blraaz x0         // encoding: [0x1f,0x08,0x3f,0xd6]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: blraaz x0         // encoding: [0x1f,0x08,0x3f,0xd6]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  blraaz x0
>    blrabz x0
> -// CHECK: blrabz x0         // encoding: [0x1f,0x0c,0x3f,0xd6]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: blrabz x0         // encoding: [0x1f,0x0c,0x3f,0xd6]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  blrabz x0
>    retaa
> -// CHECK: retaa             // encoding: [0xff,0x0b,0x5f,0xd6]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: retaa             // encoding: [0xff,0x0b,0x5f,0xd6]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  retaa
>    retab
> -// CHECK: retab             // encoding: [0xff,0x0f,0x5f,0xd6]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: retab             // encoding: [0xff,0x0f,0x5f,0xd6]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  retab
>    eretaa
> -// CHECK: eretaa            // encoding: [0xff,0x0b,0x9f,0xd6]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: eretaa            // encoding: [0xff,0x0b,0x9f,0xd6]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  eretaa
>    eretab
> -// CHECK: eretab            // encoding: [0xff,0x0f,0x9f,0xd6]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: eretab            // encoding: [0xff,0x0f,0x9f,0xd6]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  eretab
>    ldraa x0, [x1, 4088]
> -// CHECK: ldraa x0, [x1, #4088]  // encoding: [0x20,0xf4,0x3f,0xf8]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: ldraa x0, [x1, #4088]  // encoding: [0x20,0xf4,0x3f,0xf8]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  ldraa x0, [x1, 4088]
>    ldraa x0, [x1, -4096]
> -// CHECK: ldraa x0, [x1, #-4096] // encoding: [0x20,0x04,0x60,0xf8]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: ldraa x0, [x1, #-4096] // encoding: [0x20,0x04,0x60,0xf8]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  ldraa x0, [x1, -4096]
>    ldrab x0, [x1, 4088]
> -// CHECK: ldrab x0, [x1, #4088]  // encoding: [0x20,0xf4,0xbf,0xf8]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: ldrab x0, [x1, #4088]  // encoding: [0x20,0xf4,0xbf,0xf8]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  ldrab x0, [x1, 4088]
>    ldrab x0, [x1, -4096]
> -// CHECK: ldrab x0, [x1, #-4096] // encoding: [0x20,0x04,0xe0,0xf8]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: ldrab x0, [x1, #-4096] // encoding: [0x20,0x04,0xe0,0xf8]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  ldrab x0, [x1, -4096]
>    ldraa x0, [x1, 4088]!
> -// CHECK: ldraa x0, [x1, #4088]!  // encoding: [0x20,0xfc,0x3f,0xf8]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: ldraa x0, [x1, #4088]!  // encoding: [0x20,0xfc,0x3f,0xf8]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  ldraa x0, [x1, 4088]!
>    ldraa x0, [x1, -4096]!
> -// CHECK: ldraa x0, [x1, #-4096]! // encoding: [0x20,0x0c,0x60,0xf8]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: ldraa x0, [x1, #-4096]! // encoding: [0x20,0x0c,0x60,0xf8]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  ldraa x0, [x1, -4096]!
>    ldrab x0, [x1, 4088]!
> -// CHECK: ldrab x0, [x1, #4088]!  // encoding: [0x20,0xfc,0xbf,0xf8]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: ldrab x0, [x1, #4088]!  // encoding: [0x20,0xfc,0xbf,0xf8]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  ldrab x0, [x1, 4088]!
>    ldrab x0, [x1, -4096]!
> -// CHECK: ldrab x0, [x1, #-4096]! // encoding: [0x20,0x0c,0xe0,0xf8]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: ldrab x0, [x1, #-4096]! // encoding: [0x20,0x0c,0xe0,0xf8]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  ldrab x0, [x1, -4096]!
>    ldraa x0, [x1]
> -// CHECK: ldraa x0, [x1]  // encoding: [0x20,0x04,0x20,0xf8]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: ldraa x0, [x1]  // encoding: [0x20,0x04,0x20,0xf8]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  ldraa x0, [x1]
>    ldrab x0, [x1]
> -// CHECK: ldrab x0, [x1]  // encoding: [0x20,0x04,0xa0,0xf8]
> -// CHECK-REQ: error: instruction requires: armv8.3a
> +// CHECK-NEXT: ldrab x0, [x1]  // encoding: [0x20,0x04,0xa0,0xf8]
> +// CHECK-REQ: error: instruction requires: pa
> +// CHECK-REQ-NEXT:  ldrab x0, [x1]
>
> Modified: llvm/trunk/test/MC/AArch64/armv8.4a-flag.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/AArch64/armv8.4a-flag.s?rev=348121&r1=348120&r2=348121&view=diff
>
> ==============================================================================
> --- llvm/trunk/test/MC/AArch64/armv8.4a-flag.s (original)
> +++ llvm/trunk/test/MC/AArch64/armv8.4a-flag.s Mon Dec  3 03:08:13 2018
> @@ -1,5 +1,14 @@
> -// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.4a < %s | FileCheck %s --check-prefix=CHECK
> -// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=-v8.4a < %s 2>&1 | FileCheck %s --check-prefix=CHECK-ERROR
> +// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.4a %s -o - | \
> +// RUN: FileCheck %s
> +
> +// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding -mattr=+fmi
> %s -o - 2>&1 | \
> +// RUN: FileCheck %s
> +
> +// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=-v8.4a %s -o - 2>&1 | \
> +// RUN: FileCheck %s --check-prefix=ERROR
> +
> +// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.4a,-fmi %s -o - 2>&1 | \
> +// RUN: FileCheck %s --check-prefix=ERROR
>
>
>  //------------------------------------------------------------------------------
>  // Armv8.4-A flag manipulation instructions
> @@ -21,24 +30,24 @@
>  //CHECK-NEXT: rmif x1, #63, #15            // encoding:
> [0x2f,0x84,0x1f,0xba]
>  //CHECK-NEXT: rmif xzr, #63, #15           // encoding:
> [0xef,0x87,0x1f,0xba]
>
> -//CHECK-ERROR:      error: instruction requires: armv8.4a
> -//CHECK-ERROR-NEXT: cfinv
> -//CHECK-ERROR-NEXT: ^
> -//CHECK-ERROR-NEXT: error: instruction requires: armv8.4a
> -//CHECK-ERROR-NEXT: setf8 w1
> -//CHECK-ERROR-NEXT: ^
> -//CHECK-ERROR-NEXT: error: instruction requires: armv8.4a
> -//CHECK-ERROR-NEXT: setf8 wzr
> -//CHECK-ERROR-NEXT: ^
> -//CHECK-ERROR-NEXT: error: instruction requires: armv8.4a
> -//CHECK-ERROR-NEXT: setf16 w1
> -//CHECK-ERROR-NEXT: ^
> -//CHECK-ERROR-NEXT: error: instruction requires: armv8.4a
> -//CHECK-ERROR-NEXT: setf16 wzr
> -//CHECK-ERROR-NEXT: ^
> -//CHECK-ERROR-NEXT: error: instruction requires: armv8.4a
> -//CHECK-ERROR-NEXT: rmif x1, #63, #15
> -//CHECK-ERROR-NEXT: ^
> -//CHECK-ERROR-NEXT: error: instruction requires: armv8.4a
> -//CHECK-ERROR-NEXT: rmif xzr, #63, #15
> -//CHECK-ERROR-NEXT: ^
> +//ERROR:      error: instruction requires: fmi
> +//ERROR-NEXT: cfinv
> +//ERROR-NEXT: ^
> +//ERROR-NEXT: error: instruction requires: fmi
> +//ERROR-NEXT: setf8 w1
> +//ERROR-NEXT: ^
> +//ERROR-NEXT: error: instruction requires: fmi
> +//ERROR-NEXT: setf8 wzr
> +//ERROR-NEXT: ^
> +//ERROR-NEXT: error: instruction requires: fmi
> +//ERROR-NEXT: setf16 w1
> +//ERROR-NEXT: ^
> +//ERROR-NEXT: error: instruction requires: fmi
> +//ERROR-NEXT: setf16 wzr
> +//ERROR-NEXT: ^
> +//ERROR-NEXT: error: instruction requires: fmi
> +//ERROR-NEXT: rmif x1, #63, #15
> +//ERROR-NEXT: ^
> +//ERROR-NEXT: error: instruction requires: fmi
> +//ERROR-NEXT: rmif xzr, #63, #15
> +//ERROR-NEXT: ^
>
> Modified: llvm/trunk/test/MC/AArch64/armv8.4a-ldst.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/AArch64/armv8.4a-ldst.s?rev=348121&r1=348120&r2=348121&view=diff
>
> ==============================================================================
> --- llvm/trunk/test/MC/AArch64/armv8.4a-ldst.s (original)
> +++ llvm/trunk/test/MC/AArch64/armv8.4a-ldst.s Mon Dec  3 03:08:13 2018
> @@ -1,5 +1,8 @@
> -// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.4a < %s | FileCheck %s --check-prefix=CHECK
> -// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=-v8.4a < %s 2>&1 | FileCheck %s --check-prefix=CHECK-NO-V84
> +// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.4a -o - %s | FileCheck %s
> +// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=-v8.4a,+rcpc-immo -o - %s 2>&1 | FileCheck %s
> +// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.4a,-rcpc-immo -o - %s 2>&1 | FileCheck %s
> --check-prefix=CHECK-NO-V84
> +// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=-v8.4a -o - %s 2>&1 | FileCheck %s --check-prefix=CHECK-NO-V84
> +// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding -o - %s
> 2>&1 | FileCheck %s --check-prefix=CHECK-NO-V84
>
>
>  //------------------------------------------------------------------------------
>  // Armv8.4-A LDAPR and STLR instructions with immediate offsets
> @@ -140,168 +143,168 @@ ldapur   x14, [sp, #9]
>  //CHECK-NEXT:  ldapur  x13, [x4, #255]         // encoding:
> [0x8d,0xf0,0x4f,0xd9]
>  //CHECK-NEXT:  ldapur  x14, [sp, #9]           // encoding:
> [0xee,0x93,0x40,0xd9]
>
> -//CHECK-NO-V84:      error: instruction requires: armv8.4a
> +//CHECK-NO-V84:      error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: STLURB   WZR, [X10]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: STLURB   W1, [X10]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: STLURB   W1, [X10, #-256]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: stlurb   w2, [x11, #255]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: STLURB   W3, [SP, #-3]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: ldapurb  wzr, [x12]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: ldapurb  w4, [x12]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: ldapurb  w4, [x12, #-256]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPURB  W5, [X13, #255]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPURB  W6, [SP, #-2]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPURSB W7, [X14]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPURSB W7, [X14, #-256]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: ldapursb w8, [x15, #255]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: ldapursb w9, [sp, #-1]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPURSB X0, [X16]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPURSB X0, [X16, #-256]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPURSB X1, [X17, #255]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: ldapursb x2, [sp, #0]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: ldapursb x2, [sp]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: stlurh   w10, [x18]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: stlurh   w10, [x18, #-256]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: STLURH   W11, [X19, #255]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: STLURH   W12, [SP, #1]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPURH  W13, [X20]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPURH  W13, [X20, #-256]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: ldapurh  w14, [x21, #255]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPURH  W15, [SP, #2]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPURSH W16, [X22]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPURSH W16, [X22, #-256]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPURSH W17, [X23, #255]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: ldapursh w18, [sp, #3]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: ldapursh x3, [x24]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: ldapursh x3, [x24, #-256]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPURSH X4, [X25, #255]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPURSH X5, [SP, #4]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: STLUR    W19, [X26]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: STLUR    W19, [X26, #-256]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: stlur    w20, [x27, #255]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: STLUR    W21, [SP, #5]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPUR   W22, [X28]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPUR   W22, [X28, #-256]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPUR   W23, [X29, #255]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: ldapur   w24, [sp, #6]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: ldapursw x6, [x30]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: ldapursw x6, [x30, #-256]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPURSW X7, [X0, #255]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPURSW X8, [SP, #7]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: STLUR    X9, [X1]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: STLUR    X9, [X1, #-256]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: stlur    x10, [x2, #255]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: STLUR    X11, [SP, #8]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPUR   X12, [X3]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPUR   X12, [X3, #-256]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: LDAPUR   X13, [X4, #255]
>  //CHECK-NO-V84-NEXT: ^
> -//CHECK-NO-V84-NEXT: error: instruction requires: armv8.4a
> +//CHECK-NO-V84-NEXT: error: instruction requires: rcpc-immo
>  //CHECK-NO-V84-NEXT: ldapur   x14, [sp, #9]
>  //CHECK-NO-V84-NEXT: ^
>
> Modified: llvm/trunk/test/MC/AArch64/armv8.4a-tlb.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/AArch64/armv8.4a-tlb.s?rev=348121&r1=348120&r2=348121&view=diff
>
> ==============================================================================
> --- llvm/trunk/test/MC/AArch64/armv8.4a-tlb.s (original)
> +++ llvm/trunk/test/MC/AArch64/armv8.4a-tlb.s Mon Dec  3 03:08:13 2018
> @@ -1,6 +1,9 @@
>  // RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.4a < %s 2> %t | FileCheck %s --check-prefix=CHECK
>  // RUN: FileCheck --check-prefix=CHECK-ERROR < %t %s
> +// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+tlb-rmi < %s 2> %t | FileCheck %s --check-prefix=CHECK
> +// RUN: FileCheck --check-prefix=CHECK-ERROR < %t %s
>  // RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=-v8.4a < %s 2>&1 | FileCheck %s --check-prefix=CHECK-NO-V84
> +// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.4a,-tlb-rmi < %s 2>&1 | FileCheck %s --check-prefix=CHECK-NO-V84
>
>  // Outer shareable TLB maintenance instructions:
>  tlbi vmalle1os
> @@ -45,55 +48,55 @@ tlbi vae1os, sp
>  //CHECK-ERROR-NEXT: tlbi vae1os, sp
>  //CHECK-ERROR-NEXT:              ^
>
> -//CHECK-NO-V84:      error: TLBI VMALLE1OS requires ARMv8.4a
> +//CHECK-NO-V84:      error: TLBI VMALLE1OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi vmalle1os
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI VAE1OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI VAE1OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi vae1os, xzr
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI VAE1OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI VAE1OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi vae1os, x0
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI ASIDE1OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI ASIDE1OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi aside1os, x1
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI VAAE1OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI VAAE1OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi vaae1os, x2
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI VALE1OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI VALE1OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi vale1os, x3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI VAALE1OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI VAALE1OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi vaale1os, x4
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI IPAS2E1OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI IPAS2E1OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi ipas2e1os, x5
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI IPAS2LE1OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI IPAS2LE1OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi ipas2le1os, x6
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI VAE2OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI VAE2OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi vae2os, x7
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI VALE2OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI VALE2OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi vale2os, x8
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI VMALLS12E1OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI VMALLS12E1OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi vmalls12e1os
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI VAE3OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI VAE3OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi vae3os, x9
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI VALE3OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI VALE3OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi vale3os, x10
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI ALLE2OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI ALLE2OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi alle2os
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI ALLE1OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI ALLE1OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi alle1os
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI ALLE3OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI ALLE3OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi alle3os
>  //CHECK-NO-V84-NEXT:      ^
>
> @@ -168,96 +171,96 @@ tlbi rvae1, sp
>  //CHECK-ERROR-NEXT: tlbi rvae1, sp
>  //CHECK-ERROR-NEXT:             ^
>
> -//CHECK-NO-V84:      error: TLBI RVAE1 requires ARMv8.4a
> +//CHECK-NO-V84:      error: TLBI RVAE1 requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvae1, x3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVAAE1 requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVAAE1 requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvaae1, x3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVALE1 requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVALE1 requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvale1, x3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVAALE1 requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVAALE1 requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvaale1, x3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT:  error: TLBI RVAE1IS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT:  error: TLBI RVAE1IS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvae1is, x3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVAAE1IS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVAAE1IS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvaae1is, x3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVALE1IS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVALE1IS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvale1is, x3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVAALE1IS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVAALE1IS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvaale1is, x3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVAE1OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVAE1OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvae1os, x3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVAAE1OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVAAE1OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvaae1os, x3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVALE1OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVALE1OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvale1os, x3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVAALE1OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVAALE1OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvaale1os, x3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RIPAS2E1IS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RIPAS2E1IS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi ripas2e1is, x3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RIPAS2LE1IS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RIPAS2LE1IS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi ripas2le1is, x3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RIPAS2E1 requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RIPAS2E1 requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi ripas2e1, X3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RIPAS2LE1 requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RIPAS2LE1 requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi ripas2le1, X3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RIPAS2E1OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RIPAS2E1OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi ripas2e1os, X3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RIPAS2LE1OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RIPAS2LE1OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi ripas2le1os, X3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVAE2 requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVAE2 requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvae2, X3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVALE2 requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVALE2 requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvale2, X3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVAE2IS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVAE2IS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvae2is, X3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVALE2IS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVALE2IS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvale2is, X3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVAE2OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVAE2OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvae2os, X3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVALE2OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVALE2OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvale2os, X3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVAE3 requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVAE3 requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvae3, X3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVALE3 requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVALE3 requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvale3, X3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVAE3IS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVAE3IS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvae3is, X3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVALE3IS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVALE3IS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvale3is, X3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVAE3OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVAE3OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvae3os, X3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVALE3OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVALE3OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvale3os, X3
>  //CHECK-NO-V84-NEXT:      ^
> -//CHECK-NO-V84-NEXT: error: TLBI RVALE3OS requires ARMv8.4a
> +//CHECK-NO-V84-NEXT: error: TLBI RVALE3OS requires tlb-rmi
>  //CHECK-NO-V84-NEXT: tlbi rvale3os, XZR
>  //CHECK-NO-V84-NEXT:      ^
>
> Modified: llvm/trunk/test/MC/AArch64/armv8.4a-trace.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/AArch64/armv8.4a-trace.s?rev=348121&r1=348120&r2=348121&view=diff
>
> ==============================================================================
> --- llvm/trunk/test/MC/AArch64/armv8.4a-trace.s (original)
> +++ llvm/trunk/test/MC/AArch64/armv8.4a-trace.s Mon Dec  3 03:08:13 2018
> @@ -1,5 +1,14 @@
> -// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.4a < %s  | FileCheck %s --check-prefix=CHECK
> -// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=-v8.4a < %s 2>&1 | FileCheck %s --check-prefix=CHECK-ERROR
> +// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.4a -o - 2>&1 %s  | \
> +// RUN: FileCheck %s
> +
> +// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+tracev8.4 -o - 2>&1 %s  | \
> +// RUN: FileCheck %s
> +
> +// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=-v8.4a -o - %s 2>&1 | \
> +// RUN: FileCheck %s --check-prefix=CHECK-ERROR
> +
> +// RUN: not llvm-mc -triple aarch64-none-linux-gnu -show-encoding
> -mattr=+v8.4a,-tracev8.4 -o - %s 2>&1 | \
> +// RUN: FileCheck %s --check-prefixes NOFEATURE,CHECK-ERROR
>
>
>  //------------------------------------------------------------------------------
>  // ARMV8.4-A Debug, Trace and PMU Extensions
> @@ -45,4 +54,4 @@ tsb csync
>  //CHECK-ERROR: mrs x0, TRFCR_EL12
>  //CHECK-ERROR:         ^
>
> -//CHECK-ERROR: error: instruction requires: armv8.4a
> +//CHECK-ERROR: error: instruction requires: tracev8.4
>
>
> _______________________________________________
> llvm-commits mailing list
> llvm-commits at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits
>
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