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[AArch64] Define apple-m5/a19 CPUs.#171187

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Dec 10, 2025
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[AArch64] Define apple-m5/a19 CPUs.#171187
ahmedbougacha merged 1 commit into
llvm:mainfrom
ahmedbougacha:users/ahmedbougacha/apple-m5-a19

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A19 and M5 have been released in fall 2025.
They add several features on top of M4/A18:

  • MTE, CSSC, HBC
  • SME2p1, SMEB16B16, SMEF16F16
  • SPECRES2

This also bumps apple-latest to apple-m5.

A19 and M5 have been released in fall 2025.
They add several features on top of M4/A18:
- MTE, CSSC, HBC
- SME2p1, SMEB16B16, SMEF16F16
- SPECRES2

This also bumps apple-latest to apple-m5.
@llvmbot llvmbot added backend:AArch64 clang:driver 'clang' and 'clang++' user-facing binaries. Not 'clang-cl' labels Dec 8, 2025
@llvmbot

llvmbot commented Dec 8, 2025

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@llvm/pr-subscribers-backend-aarch64

Author: Ahmed Bougacha (ahmedbougacha)

Changes

A19 and M5 have been released in fall 2025.
They add several features on top of M4/A18:

  • MTE, CSSC, HBC
  • SME2p1, SMEB16B16, SMEF16F16
  • SPECRES2

This also bumps apple-latest to apple-m5.


Full diff: https://github.com/llvm/llvm-project/pull/171187.diff

7 Files Affected:

  • (added) clang/test/Driver/print-enabled-extensions/aarch64-apple-m5.c (+71)
  • (modified) clang/test/Driver/print-supported-cpus-aarch64.c (+2)
  • (modified) clang/test/Misc/target-invalid-cpu-note/aarch64.c (+2)
  • (modified) llvm/lib/Target/AArch64/AArch64Processors.td (+41-1)
  • (modified) llvm/lib/Target/AArch64/AArch64Subtarget.cpp (+1)
  • (modified) llvm/lib/Target/AArch64/AArch64Subtarget.h (+1)
  • (modified) llvm/unittests/TargetParser/TargetParserTest.cpp (+4-2)
diff --git a/clang/test/Driver/print-enabled-extensions/aarch64-apple-m5.c b/clang/test/Driver/print-enabled-extensions/aarch64-apple-m5.c
new file mode 100644
index 0000000000000..ae8923287b2e3
--- /dev/null
+++ b/clang/test/Driver/print-enabled-extensions/aarch64-apple-m5.c
@@ -0,0 +1,71 @@
+// REQUIRES: aarch64-registered-target
+// RUN: %clang --target=aarch64 --print-enabled-extensions -mcpu=apple-m5 | FileCheck --strict-whitespace --implicit-check-not=FEAT_ %s
+
+// CHECK: Extensions enabled for the given AArch64 target
+// CHECK-EMPTY:
+// CHECK-NEXT:     Architecture Feature(s)                                Description
+// CHECK-NEXT:     FEAT_AES, FEAT_PMULL                                   Enable AES support
+// CHECK-NEXT:     FEAT_AMUv1                                             Enable Armv8.4-A Activity Monitors extension
+// CHECK-NEXT:     FEAT_AMUv1p1                                           Enable Armv8.6-A Activity Monitors Virtualization support
+// CHECK-NEXT:     FEAT_AdvSIMD                                           Enable Advanced SIMD instructions
+// CHECK-NEXT:     FEAT_BF16                                              Enable BFloat16 Extension
+// CHECK-NEXT:     FEAT_BTI                                               Enable Branch Target Identification
+// CHECK-NEXT:     FEAT_CRC32                                             Enable Armv8.0-A CRC-32 checksum instructions
+// CHECK-NEXT:     FEAT_CSSC                                              Enable Common Short Sequence Compression (CSSC) instructions
+// CHECK-NEXT:     FEAT_CSV2_2                                            Enable architectural speculation restriction
+// CHECK-NEXT:     FEAT_DIT                                               Enable Armv8.4-A Data Independent Timing instructions
+// CHECK-NEXT:     FEAT_DPB                                               Enable Armv8.2-A data Cache Clean to Point of Persistence
+// CHECK-NEXT:     FEAT_DPB2                                              Enable Armv8.5-A Cache Clean to Point of Deep Persistence
+// CHECK-NEXT:     FEAT_DotProd                                           Enable dot product support
+// CHECK-NEXT:     FEAT_ECV                                               Enable enhanced counter virtualization extension
+// CHECK-NEXT:     FEAT_FCMA                                              Enable Armv8.3-A Floating-point complex number support
+// CHECK-NEXT:     FEAT_FGT                                               Enable fine grained virtualization traps extension
+// CHECK-NEXT:     FEAT_FHM                                               Enable FP16 FML instructions
+// CHECK-NEXT:     FEAT_FP                                                Enable Armv8.0-A Floating Point Extensions
+// CHECK-NEXT:     FEAT_FP16                                              Enable half-precision floating-point data processing
+// CHECK-NEXT:     FEAT_FPAC                                              Enable Armv8.3-A Pointer Authentication Faulting enhancement
+// CHECK-NEXT:     FEAT_FRINTTS                                           Enable FRInt[32|64][Z|X] instructions that round a floating-point number to an integer (in FP format) forcing it to fit into a 32- or 64-bit int
+// CHECK-NEXT:     FEAT_FlagM                                             Enable Armv8.4-A Flag Manipulation instructions
+// CHECK-NEXT:     FEAT_FlagM2                                            Enable alternative NZCV format for floating point comparisons
+// CHECK-NEXT:     FEAT_HBC                                               Enable Armv8.8-A Hinted Conditional Branches Extension
+// CHECK-NEXT:     FEAT_HCX                                               Enable Armv8.7-A HCRX_EL2 system register
+// CHECK-NEXT:     FEAT_I8MM                                              Enable Matrix Multiply Int8 Extension
+// CHECK-NEXT:     FEAT_JSCVT                                             Enable Armv8.3-A JavaScript FP conversion instructions
+// CHECK-NEXT:     FEAT_LOR                                               Enable Armv8.1-A Limited Ordering Regions extension
+// CHECK-NEXT:     FEAT_LRCPC                                             Enable support for RCPC extension
+// CHECK-NEXT:     FEAT_LRCPC2                                            Enable Armv8.4-A RCPC instructions with Immediate Offsets
+// CHECK-NEXT:     FEAT_LSE                                               Enable Armv8.1-A Large System Extension (LSE) atomic instructions
+// CHECK-NEXT:     FEAT_LSE2                                              Enable Armv8.4-A Large System Extension 2 (LSE2) atomicity rules
+// FIXME: Apple M5 does not have FEAT_MPAM, but it is currently marked as
+// non-optional in llvm's understanding of Armv8.4-A
+// CHECK-NEXT:     FEAT_MPAM                                              Enable Armv8.4-A Memory system Partitioning and Monitoring extension
+// CHECK-NEXT:     FEAT_MTE, FEAT_MTE2                                    Enable Memory Tagging Extension
+// CHECK-NEXT:     FEAT_NV, FEAT_NV2                                      Enable Armv8.4-A Nested Virtualization Enchancement
+// CHECK-NEXT:     FEAT_PAN                                               Enable Armv8.1-A Privileged Access-Never extension
+// CHECK-NEXT:     FEAT_PAN2                                              Enable Armv8.2-A PAN s1e1R and s1e1W Variants
+// CHECK-NEXT:     FEAT_PAuth                                             Enable Armv8.3-A Pointer Authentication extension
+// CHECK-NEXT:     FEAT_PMUv3                                             Enable Armv8.0-A PMUv3 Performance Monitors extension
+// CHECK-NEXT:     FEAT_RAS, FEAT_RASv1p1                                 Enable Armv8.0-A Reliability, Availability and Serviceability Extensions
+// CHECK-NEXT:     FEAT_RDM                                               Enable Armv8.1-A Rounding Double Multiply Add/Subtract instructions
+// CHECK-NEXT:     FEAT_SB                                                Enable Armv8.5-A Speculation Barrier
+// FIXME: Apple M5 does not have FEAT_SEL2, but it is currently marked as
+// non-optional in llvm's understanding of Armv8.4-A
+// CHECK-NEXT:     FEAT_SEL2                                              Enable Armv8.4-A Secure Exception Level 2 extension
+// CHECK-NEXT:     FEAT_SHA1, FEAT_SHA256                                 Enable SHA1 and SHA256 support
+// CHECK-NEXT:     FEAT_SHA3, FEAT_SHA512                                 Enable SHA512 and SHA3 support
+// CHECK-NEXT:     FEAT_SME                                               Enable Scalable Matrix Extension (SME)
+// CHECK-NEXT:     FEAT_SME2                                              Enable Scalable Matrix Extension 2 (SME2) instructions
+// CHECK-NEXT:     FEAT_SME2p1                                            Enable Scalable Matrix Extension 2.1 instructions
+// CHECK-NEXT:     FEAT_SME_B16B16                                        Enable SME2.1 ZA-targeting non-widening BFloat16 instructions
+// CHECK-NEXT:     FEAT_SME_F16F16                                        Enable SME non-widening Float16 instructions
+// CHECK-NEXT:     FEAT_SME_F64F64                                        Enable Scalable Matrix Extension (SME) F64F64 instructions
+// CHECK-NEXT:     FEAT_SME_I16I64                                        Enable Scalable Matrix Extension (SME) I16I64 instructions
+// CHECK-NEXT:     FEAT_SPECRES                                           Enable Armv8.5-A execution and data prediction invalidation instructions
+// CHECK-NEXT:     FEAT_SPECRES2                                          Enable Speculation Restriction Instruction
+// CHECK-NEXT:     FEAT_SVE_B16B16                                        Enable SVE2 non-widening and SME2 Z-targeting non-widening BFloat16 instructions
+// CHECK-NEXT:     FEAT_TLBIOS, FEAT_TLBIRANGE                            Enable Armv8.4-A TLB Range and Maintenance instructions
+// CHECK-NEXT:     FEAT_TRF                                               Enable Armv8.4-A Trace extension
+// CHECK-NEXT:     FEAT_UAO                                               Enable Armv8.2-A UAO PState
+// CHECK-NEXT:     FEAT_VHE                                               Enable Armv8.1-A Virtual Host extension
+// CHECK-NEXT:     FEAT_WFxT                                              Enable Armv8.7-A WFET and WFIT instruction
+// CHECK-NEXT:     FEAT_XS                                                Enable Armv8.7-A limited-TLB-maintenance instruction
diff --git a/clang/test/Driver/print-supported-cpus-aarch64.c b/clang/test/Driver/print-supported-cpus-aarch64.c
index 3a0ccaf015428..0649181ca39f8 100644
--- a/clang/test/Driver/print-supported-cpus-aarch64.c
+++ b/clang/test/Driver/print-supported-cpus-aarch64.c
@@ -15,6 +15,7 @@
 // CHECK: apple-a16
 // CHECK: apple-a17
 // CHECK: apple-a18
+// CHECK: apple-a19
 // CHECK: apple-a7
 // CHECK: apple-a8
 // CHECK: apple-a9
@@ -22,6 +23,7 @@
 // CHECK: apple-m2
 // CHECK: apple-m3
 // CHECK: apple-m4
+// CHECK: apple-m5
 // CHECK: apple-s10
 // CHECK: apple-s4
 // CHECK: apple-s5
diff --git a/clang/test/Misc/target-invalid-cpu-note/aarch64.c b/clang/test/Misc/target-invalid-cpu-note/aarch64.c
index 0346ab2bb6b13..a84486da807ad 100644
--- a/clang/test/Misc/target-invalid-cpu-note/aarch64.c
+++ b/clang/test/Misc/target-invalid-cpu-note/aarch64.c
@@ -20,6 +20,7 @@
 // CHECK-SAME: {{^}}, apple-a16
 // CHECK-SAME: {{^}}, apple-a17
 // CHECK-SAME: {{^}}, apple-a18
+// CHECK-SAME: {{^}}, apple-a19
 // CHECK-SAME: {{^}}, apple-a7
 // CHECK-SAME: {{^}}, apple-a8
 // CHECK-SAME: {{^}}, apple-a9
@@ -27,6 +28,7 @@
 // CHECK-SAME: {{^}}, apple-m2
 // CHECK-SAME: {{^}}, apple-m3
 // CHECK-SAME: {{^}}, apple-m4
+// CHECK-SAME: {{^}}, apple-m5
 // CHECK-SAME: {{^}}, apple-s10
 // CHECK-SAME: {{^}}, apple-s4
 // CHECK-SAME: {{^}}, apple-s5
diff --git a/llvm/lib/Target/AArch64/AArch64Processors.td b/llvm/lib/Target/AArch64/AArch64Processors.td
index 120415f91c9ae..1b4d6b5e00a2d 100644
--- a/llvm/lib/Target/AArch64/AArch64Processors.td
+++ b/llvm/lib/Target/AArch64/AArch64Processors.td
@@ -516,6 +516,26 @@ def TuneAppleM4 : SubtargetFeature<"apple-m4", "ARMProcFamily", "AppleM4",
                                      FeatureNoZCZeroingFPR64,
                                      FeatureZCZeroingFPR128]>;
 
+def TuneAppleM5 : SubtargetFeature<"apple-m5", "ARMProcFamily", "AppleM5",
+                                    "Apple M5", [
+                                    FeatureAlternateSExtLoadCVTF32Pattern,
+                                    FeatureArithmeticBccFusion,
+                                    FeatureArithmeticCbzFusion,
+                                    FeatureDisableLatencySchedHeuristic,
+                                    FeatureFuseAddress,
+                                    FeatureFuseAdrpAdd,
+                                    FeatureFuseAES,
+                                    FeatureFuseArithmeticLogic,
+                                    FeatureFuseCmpCSel,
+                                    FeatureFuseCryptoEOR,
+                                    FeatureFuseLiterals,
+                                    FeatureZCRegMoveGPR64,
+                                    FeatureZCRegMoveFPR128,
+                                    FeatureZCZeroingGPR32,
+                                    FeatureZCZeroingGPR64,
+                                    FeatureNoZCZeroingFPR64,
+                                    FeatureZCZeroingFPR128]>;
+
 def TuneExynosM3 : SubtargetFeature<"exynosm3", "ARMProcFamily", "ExynosM3",
                                     "Samsung Exynos-M3 processors",
                                     [FeatureExynosCheapAsMoveHandling,
@@ -1060,6 +1080,22 @@ def ProcessorFeatures {
                                     FeatureLSE, FeaturePAuth, FeatureFPAC,
                                     FeatureRAS, FeatureRCPC, FeatureRDM,
                                     FeatureDotProd, FeatureMatMulInt8];
+
+  list<SubtargetFeature> AppleM5 = [HasV8_7aOps, FeatureSHA2, FeatureFPARMv8,
+                                    FeatureNEON, FeaturePerfMon, FeatureSHA3,
+                                    FeatureFullFP16, FeatureFP16FML,
+                                    FeatureAES, FeatureBF16,
+                                    FeatureWFxT,
+                                    FeatureSME, FeatureSME2,
+                                    FeatureSMEF64F64, FeatureSMEI16I64,
+                                    FeatureComplxNum, FeatureCRC, FeatureJS,
+                                    FeatureLSE, FeaturePAuth, FeatureFPAC,
+                                    FeatureRAS, FeatureRCPC, FeatureRDM,
+                                    FeatureDotProd, FeatureMatMulInt8,
+                                    FeatureMTE, FeatureCSSC, FeatureHBC,
+                                    FeatureSME2p1, FeatureSMEB16B16, FeatureSMEF16F16,
+                                    FeatureSPECRES2];
+
   list<SubtargetFeature> ExynosM3 = [HasV8_0aOps, FeatureCRC, FeatureSHA2, FeatureAES,
                                      FeaturePerfMon, FeatureNEON, FeatureFPARMv8];
   list<SubtargetFeature> ExynosM4 = [HasV8_2aOps, FeatureSHA2, FeatureAES, FeatureDotProd,
@@ -1379,8 +1415,12 @@ def : ProcessorModel<"apple-m4", CycloneModel, ProcessorFeatures.AppleM4,
                      [TuneAppleM4]>;
 def : ProcessorAlias<"apple-a18", "apple-m4">;
 
+def : ProcessorModel<"apple-m5", CycloneModel, ProcessorFeatures.AppleM5,
+                     [TuneAppleM5]>;
+def : ProcessorAlias<"apple-a19", "apple-m5">;
+
 // Alias for the latest Apple processor model supported by LLVM.
-def : ProcessorAlias<"apple-latest", "apple-m4">;
+def : ProcessorAlias<"apple-latest", "apple-m5">;
 
 
 // Fujitsu A64FX
diff --git a/llvm/lib/Target/AArch64/AArch64Subtarget.cpp b/llvm/lib/Target/AArch64/AArch64Subtarget.cpp
index dae4f6a82e3aa..134b4be9c66b2 100644
--- a/llvm/lib/Target/AArch64/AArch64Subtarget.cpp
+++ b/llvm/lib/Target/AArch64/AArch64Subtarget.cpp
@@ -218,6 +218,7 @@ void AArch64Subtarget::initializeProperties(bool HasMinSize) {
   case AppleA16:
   case AppleA17:
   case AppleM4:
+  case AppleM5:
     CacheLineSize = 64;
     PrefetchDistance = 280;
     MinPrefetchStride = 2048;
diff --git a/llvm/lib/Target/AArch64/AArch64Subtarget.h b/llvm/lib/Target/AArch64/AArch64Subtarget.h
index 8553f16a6c937..7804bb62796c1 100644
--- a/llvm/lib/Target/AArch64/AArch64Subtarget.h
+++ b/llvm/lib/Target/AArch64/AArch64Subtarget.h
@@ -178,6 +178,7 @@ class AArch64Subtarget final : public AArch64GenSubtargetInfo {
     case AppleA16:
     case AppleA17:
     case AppleM4:
+    case AppleM5:
       return true;
     default:
       return false;
diff --git a/llvm/unittests/TargetParser/TargetParserTest.cpp b/llvm/unittests/TargetParser/TargetParserTest.cpp
index 92e2d77816cc7..444ffa55d2d54 100644
--- a/llvm/unittests/TargetParser/TargetParserTest.cpp
+++ b/llvm/unittests/TargetParser/TargetParserTest.cpp
@@ -1144,6 +1144,7 @@ INSTANTIATE_TEST_SUITE_P(
                       AArch64CPUTestParams("apple-a17", "armv8.6-a"),
                       AArch64CPUTestParams("apple-m4", "armv8.7-a"),
                       AArch64CPUTestParams("apple-a18", "armv8.7-a"),
+                      AArch64CPUTestParams("apple-m5", "armv8.7-a"),
                       AArch64CPUTestParams("exynos-m3", "armv8-a"),
                       AArch64CPUTestParams("exynos-m4", "armv8.2-a"),
                       AArch64CPUTestParams("exynos-m5", "armv8.2-a"),
@@ -1260,11 +1261,12 @@ INSTANTIATE_TEST_SUITE_P(
                       AArch64CPUAliasTestParams({"apple-a15", "apple-m2"}),
                       AArch64CPUAliasTestParams({"apple-a16", "apple-m3",
                                                  "apple-s9", "apple-s10"}),
-                      AArch64CPUAliasTestParams({"apple-m4", "apple-a18"})),
+                      AArch64CPUAliasTestParams({"apple-m4", "apple-a18"}),
+                      AArch64CPUAliasTestParams({"apple-m5", "apple-a19"})),
     AArch64CPUAliasTestParams::PrintToStringParamName);
 
 // Note: number of CPUs includes aliases.
-static constexpr unsigned NumAArch64CPUArchs = 91;
+static constexpr unsigned NumAArch64CPUArchs = 93;
 
 TEST(TargetParserTest, testAArch64CPUArchList) {
   SmallVector<StringRef, NumAArch64CPUArchs> List;

@llvmbot

llvmbot commented Dec 8, 2025

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@llvm/pr-subscribers-clang-driver

Author: Ahmed Bougacha (ahmedbougacha)

Changes

A19 and M5 have been released in fall 2025.
They add several features on top of M4/A18:

  • MTE, CSSC, HBC
  • SME2p1, SMEB16B16, SMEF16F16
  • SPECRES2

This also bumps apple-latest to apple-m5.


Full diff: https://github.com/llvm/llvm-project/pull/171187.diff

7 Files Affected:

  • (added) clang/test/Driver/print-enabled-extensions/aarch64-apple-m5.c (+71)
  • (modified) clang/test/Driver/print-supported-cpus-aarch64.c (+2)
  • (modified) clang/test/Misc/target-invalid-cpu-note/aarch64.c (+2)
  • (modified) llvm/lib/Target/AArch64/AArch64Processors.td (+41-1)
  • (modified) llvm/lib/Target/AArch64/AArch64Subtarget.cpp (+1)
  • (modified) llvm/lib/Target/AArch64/AArch64Subtarget.h (+1)
  • (modified) llvm/unittests/TargetParser/TargetParserTest.cpp (+4-2)
diff --git a/clang/test/Driver/print-enabled-extensions/aarch64-apple-m5.c b/clang/test/Driver/print-enabled-extensions/aarch64-apple-m5.c
new file mode 100644
index 0000000000000..ae8923287b2e3
--- /dev/null
+++ b/clang/test/Driver/print-enabled-extensions/aarch64-apple-m5.c
@@ -0,0 +1,71 @@
+// REQUIRES: aarch64-registered-target
+// RUN: %clang --target=aarch64 --print-enabled-extensions -mcpu=apple-m5 | FileCheck --strict-whitespace --implicit-check-not=FEAT_ %s
+
+// CHECK: Extensions enabled for the given AArch64 target
+// CHECK-EMPTY:
+// CHECK-NEXT:     Architecture Feature(s)                                Description
+// CHECK-NEXT:     FEAT_AES, FEAT_PMULL                                   Enable AES support
+// CHECK-NEXT:     FEAT_AMUv1                                             Enable Armv8.4-A Activity Monitors extension
+// CHECK-NEXT:     FEAT_AMUv1p1                                           Enable Armv8.6-A Activity Monitors Virtualization support
+// CHECK-NEXT:     FEAT_AdvSIMD                                           Enable Advanced SIMD instructions
+// CHECK-NEXT:     FEAT_BF16                                              Enable BFloat16 Extension
+// CHECK-NEXT:     FEAT_BTI                                               Enable Branch Target Identification
+// CHECK-NEXT:     FEAT_CRC32                                             Enable Armv8.0-A CRC-32 checksum instructions
+// CHECK-NEXT:     FEAT_CSSC                                              Enable Common Short Sequence Compression (CSSC) instructions
+// CHECK-NEXT:     FEAT_CSV2_2                                            Enable architectural speculation restriction
+// CHECK-NEXT:     FEAT_DIT                                               Enable Armv8.4-A Data Independent Timing instructions
+// CHECK-NEXT:     FEAT_DPB                                               Enable Armv8.2-A data Cache Clean to Point of Persistence
+// CHECK-NEXT:     FEAT_DPB2                                              Enable Armv8.5-A Cache Clean to Point of Deep Persistence
+// CHECK-NEXT:     FEAT_DotProd                                           Enable dot product support
+// CHECK-NEXT:     FEAT_ECV                                               Enable enhanced counter virtualization extension
+// CHECK-NEXT:     FEAT_FCMA                                              Enable Armv8.3-A Floating-point complex number support
+// CHECK-NEXT:     FEAT_FGT                                               Enable fine grained virtualization traps extension
+// CHECK-NEXT:     FEAT_FHM                                               Enable FP16 FML instructions
+// CHECK-NEXT:     FEAT_FP                                                Enable Armv8.0-A Floating Point Extensions
+// CHECK-NEXT:     FEAT_FP16                                              Enable half-precision floating-point data processing
+// CHECK-NEXT:     FEAT_FPAC                                              Enable Armv8.3-A Pointer Authentication Faulting enhancement
+// CHECK-NEXT:     FEAT_FRINTTS                                           Enable FRInt[32|64][Z|X] instructions that round a floating-point number to an integer (in FP format) forcing it to fit into a 32- or 64-bit int
+// CHECK-NEXT:     FEAT_FlagM                                             Enable Armv8.4-A Flag Manipulation instructions
+// CHECK-NEXT:     FEAT_FlagM2                                            Enable alternative NZCV format for floating point comparisons
+// CHECK-NEXT:     FEAT_HBC                                               Enable Armv8.8-A Hinted Conditional Branches Extension
+// CHECK-NEXT:     FEAT_HCX                                               Enable Armv8.7-A HCRX_EL2 system register
+// CHECK-NEXT:     FEAT_I8MM                                              Enable Matrix Multiply Int8 Extension
+// CHECK-NEXT:     FEAT_JSCVT                                             Enable Armv8.3-A JavaScript FP conversion instructions
+// CHECK-NEXT:     FEAT_LOR                                               Enable Armv8.1-A Limited Ordering Regions extension
+// CHECK-NEXT:     FEAT_LRCPC                                             Enable support for RCPC extension
+// CHECK-NEXT:     FEAT_LRCPC2                                            Enable Armv8.4-A RCPC instructions with Immediate Offsets
+// CHECK-NEXT:     FEAT_LSE                                               Enable Armv8.1-A Large System Extension (LSE) atomic instructions
+// CHECK-NEXT:     FEAT_LSE2                                              Enable Armv8.4-A Large System Extension 2 (LSE2) atomicity rules
+// FIXME: Apple M5 does not have FEAT_MPAM, but it is currently marked as
+// non-optional in llvm's understanding of Armv8.4-A
+// CHECK-NEXT:     FEAT_MPAM                                              Enable Armv8.4-A Memory system Partitioning and Monitoring extension
+// CHECK-NEXT:     FEAT_MTE, FEAT_MTE2                                    Enable Memory Tagging Extension
+// CHECK-NEXT:     FEAT_NV, FEAT_NV2                                      Enable Armv8.4-A Nested Virtualization Enchancement
+// CHECK-NEXT:     FEAT_PAN                                               Enable Armv8.1-A Privileged Access-Never extension
+// CHECK-NEXT:     FEAT_PAN2                                              Enable Armv8.2-A PAN s1e1R and s1e1W Variants
+// CHECK-NEXT:     FEAT_PAuth                                             Enable Armv8.3-A Pointer Authentication extension
+// CHECK-NEXT:     FEAT_PMUv3                                             Enable Armv8.0-A PMUv3 Performance Monitors extension
+// CHECK-NEXT:     FEAT_RAS, FEAT_RASv1p1                                 Enable Armv8.0-A Reliability, Availability and Serviceability Extensions
+// CHECK-NEXT:     FEAT_RDM                                               Enable Armv8.1-A Rounding Double Multiply Add/Subtract instructions
+// CHECK-NEXT:     FEAT_SB                                                Enable Armv8.5-A Speculation Barrier
+// FIXME: Apple M5 does not have FEAT_SEL2, but it is currently marked as
+// non-optional in llvm's understanding of Armv8.4-A
+// CHECK-NEXT:     FEAT_SEL2                                              Enable Armv8.4-A Secure Exception Level 2 extension
+// CHECK-NEXT:     FEAT_SHA1, FEAT_SHA256                                 Enable SHA1 and SHA256 support
+// CHECK-NEXT:     FEAT_SHA3, FEAT_SHA512                                 Enable SHA512 and SHA3 support
+// CHECK-NEXT:     FEAT_SME                                               Enable Scalable Matrix Extension (SME)
+// CHECK-NEXT:     FEAT_SME2                                              Enable Scalable Matrix Extension 2 (SME2) instructions
+// CHECK-NEXT:     FEAT_SME2p1                                            Enable Scalable Matrix Extension 2.1 instructions
+// CHECK-NEXT:     FEAT_SME_B16B16                                        Enable SME2.1 ZA-targeting non-widening BFloat16 instructions
+// CHECK-NEXT:     FEAT_SME_F16F16                                        Enable SME non-widening Float16 instructions
+// CHECK-NEXT:     FEAT_SME_F64F64                                        Enable Scalable Matrix Extension (SME) F64F64 instructions
+// CHECK-NEXT:     FEAT_SME_I16I64                                        Enable Scalable Matrix Extension (SME) I16I64 instructions
+// CHECK-NEXT:     FEAT_SPECRES                                           Enable Armv8.5-A execution and data prediction invalidation instructions
+// CHECK-NEXT:     FEAT_SPECRES2                                          Enable Speculation Restriction Instruction
+// CHECK-NEXT:     FEAT_SVE_B16B16                                        Enable SVE2 non-widening and SME2 Z-targeting non-widening BFloat16 instructions
+// CHECK-NEXT:     FEAT_TLBIOS, FEAT_TLBIRANGE                            Enable Armv8.4-A TLB Range and Maintenance instructions
+// CHECK-NEXT:     FEAT_TRF                                               Enable Armv8.4-A Trace extension
+// CHECK-NEXT:     FEAT_UAO                                               Enable Armv8.2-A UAO PState
+// CHECK-NEXT:     FEAT_VHE                                               Enable Armv8.1-A Virtual Host extension
+// CHECK-NEXT:     FEAT_WFxT                                              Enable Armv8.7-A WFET and WFIT instruction
+// CHECK-NEXT:     FEAT_XS                                                Enable Armv8.7-A limited-TLB-maintenance instruction
diff --git a/clang/test/Driver/print-supported-cpus-aarch64.c b/clang/test/Driver/print-supported-cpus-aarch64.c
index 3a0ccaf015428..0649181ca39f8 100644
--- a/clang/test/Driver/print-supported-cpus-aarch64.c
+++ b/clang/test/Driver/print-supported-cpus-aarch64.c
@@ -15,6 +15,7 @@
 // CHECK: apple-a16
 // CHECK: apple-a17
 // CHECK: apple-a18
+// CHECK: apple-a19
 // CHECK: apple-a7
 // CHECK: apple-a8
 // CHECK: apple-a9
@@ -22,6 +23,7 @@
 // CHECK: apple-m2
 // CHECK: apple-m3
 // CHECK: apple-m4
+// CHECK: apple-m5
 // CHECK: apple-s10
 // CHECK: apple-s4
 // CHECK: apple-s5
diff --git a/clang/test/Misc/target-invalid-cpu-note/aarch64.c b/clang/test/Misc/target-invalid-cpu-note/aarch64.c
index 0346ab2bb6b13..a84486da807ad 100644
--- a/clang/test/Misc/target-invalid-cpu-note/aarch64.c
+++ b/clang/test/Misc/target-invalid-cpu-note/aarch64.c
@@ -20,6 +20,7 @@
 // CHECK-SAME: {{^}}, apple-a16
 // CHECK-SAME: {{^}}, apple-a17
 // CHECK-SAME: {{^}}, apple-a18
+// CHECK-SAME: {{^}}, apple-a19
 // CHECK-SAME: {{^}}, apple-a7
 // CHECK-SAME: {{^}}, apple-a8
 // CHECK-SAME: {{^}}, apple-a9
@@ -27,6 +28,7 @@
 // CHECK-SAME: {{^}}, apple-m2
 // CHECK-SAME: {{^}}, apple-m3
 // CHECK-SAME: {{^}}, apple-m4
+// CHECK-SAME: {{^}}, apple-m5
 // CHECK-SAME: {{^}}, apple-s10
 // CHECK-SAME: {{^}}, apple-s4
 // CHECK-SAME: {{^}}, apple-s5
diff --git a/llvm/lib/Target/AArch64/AArch64Processors.td b/llvm/lib/Target/AArch64/AArch64Processors.td
index 120415f91c9ae..1b4d6b5e00a2d 100644
--- a/llvm/lib/Target/AArch64/AArch64Processors.td
+++ b/llvm/lib/Target/AArch64/AArch64Processors.td
@@ -516,6 +516,26 @@ def TuneAppleM4 : SubtargetFeature<"apple-m4", "ARMProcFamily", "AppleM4",
                                      FeatureNoZCZeroingFPR64,
                                      FeatureZCZeroingFPR128]>;
 
+def TuneAppleM5 : SubtargetFeature<"apple-m5", "ARMProcFamily", "AppleM5",
+                                    "Apple M5", [
+                                    FeatureAlternateSExtLoadCVTF32Pattern,
+                                    FeatureArithmeticBccFusion,
+                                    FeatureArithmeticCbzFusion,
+                                    FeatureDisableLatencySchedHeuristic,
+                                    FeatureFuseAddress,
+                                    FeatureFuseAdrpAdd,
+                                    FeatureFuseAES,
+                                    FeatureFuseArithmeticLogic,
+                                    FeatureFuseCmpCSel,
+                                    FeatureFuseCryptoEOR,
+                                    FeatureFuseLiterals,
+                                    FeatureZCRegMoveGPR64,
+                                    FeatureZCRegMoveFPR128,
+                                    FeatureZCZeroingGPR32,
+                                    FeatureZCZeroingGPR64,
+                                    FeatureNoZCZeroingFPR64,
+                                    FeatureZCZeroingFPR128]>;
+
 def TuneExynosM3 : SubtargetFeature<"exynosm3", "ARMProcFamily", "ExynosM3",
                                     "Samsung Exynos-M3 processors",
                                     [FeatureExynosCheapAsMoveHandling,
@@ -1060,6 +1080,22 @@ def ProcessorFeatures {
                                     FeatureLSE, FeaturePAuth, FeatureFPAC,
                                     FeatureRAS, FeatureRCPC, FeatureRDM,
                                     FeatureDotProd, FeatureMatMulInt8];
+
+  list<SubtargetFeature> AppleM5 = [HasV8_7aOps, FeatureSHA2, FeatureFPARMv8,
+                                    FeatureNEON, FeaturePerfMon, FeatureSHA3,
+                                    FeatureFullFP16, FeatureFP16FML,
+                                    FeatureAES, FeatureBF16,
+                                    FeatureWFxT,
+                                    FeatureSME, FeatureSME2,
+                                    FeatureSMEF64F64, FeatureSMEI16I64,
+                                    FeatureComplxNum, FeatureCRC, FeatureJS,
+                                    FeatureLSE, FeaturePAuth, FeatureFPAC,
+                                    FeatureRAS, FeatureRCPC, FeatureRDM,
+                                    FeatureDotProd, FeatureMatMulInt8,
+                                    FeatureMTE, FeatureCSSC, FeatureHBC,
+                                    FeatureSME2p1, FeatureSMEB16B16, FeatureSMEF16F16,
+                                    FeatureSPECRES2];
+
   list<SubtargetFeature> ExynosM3 = [HasV8_0aOps, FeatureCRC, FeatureSHA2, FeatureAES,
                                      FeaturePerfMon, FeatureNEON, FeatureFPARMv8];
   list<SubtargetFeature> ExynosM4 = [HasV8_2aOps, FeatureSHA2, FeatureAES, FeatureDotProd,
@@ -1379,8 +1415,12 @@ def : ProcessorModel<"apple-m4", CycloneModel, ProcessorFeatures.AppleM4,
                      [TuneAppleM4]>;
 def : ProcessorAlias<"apple-a18", "apple-m4">;
 
+def : ProcessorModel<"apple-m5", CycloneModel, ProcessorFeatures.AppleM5,
+                     [TuneAppleM5]>;
+def : ProcessorAlias<"apple-a19", "apple-m5">;
+
 // Alias for the latest Apple processor model supported by LLVM.
-def : ProcessorAlias<"apple-latest", "apple-m4">;
+def : ProcessorAlias<"apple-latest", "apple-m5">;
 
 
 // Fujitsu A64FX
diff --git a/llvm/lib/Target/AArch64/AArch64Subtarget.cpp b/llvm/lib/Target/AArch64/AArch64Subtarget.cpp
index dae4f6a82e3aa..134b4be9c66b2 100644
--- a/llvm/lib/Target/AArch64/AArch64Subtarget.cpp
+++ b/llvm/lib/Target/AArch64/AArch64Subtarget.cpp
@@ -218,6 +218,7 @@ void AArch64Subtarget::initializeProperties(bool HasMinSize) {
   case AppleA16:
   case AppleA17:
   case AppleM4:
+  case AppleM5:
     CacheLineSize = 64;
     PrefetchDistance = 280;
     MinPrefetchStride = 2048;
diff --git a/llvm/lib/Target/AArch64/AArch64Subtarget.h b/llvm/lib/Target/AArch64/AArch64Subtarget.h
index 8553f16a6c937..7804bb62796c1 100644
--- a/llvm/lib/Target/AArch64/AArch64Subtarget.h
+++ b/llvm/lib/Target/AArch64/AArch64Subtarget.h
@@ -178,6 +178,7 @@ class AArch64Subtarget final : public AArch64GenSubtargetInfo {
     case AppleA16:
     case AppleA17:
     case AppleM4:
+    case AppleM5:
       return true;
     default:
       return false;
diff --git a/llvm/unittests/TargetParser/TargetParserTest.cpp b/llvm/unittests/TargetParser/TargetParserTest.cpp
index 92e2d77816cc7..444ffa55d2d54 100644
--- a/llvm/unittests/TargetParser/TargetParserTest.cpp
+++ b/llvm/unittests/TargetParser/TargetParserTest.cpp
@@ -1144,6 +1144,7 @@ INSTANTIATE_TEST_SUITE_P(
                       AArch64CPUTestParams("apple-a17", "armv8.6-a"),
                       AArch64CPUTestParams("apple-m4", "armv8.7-a"),
                       AArch64CPUTestParams("apple-a18", "armv8.7-a"),
+                      AArch64CPUTestParams("apple-m5", "armv8.7-a"),
                       AArch64CPUTestParams("exynos-m3", "armv8-a"),
                       AArch64CPUTestParams("exynos-m4", "armv8.2-a"),
                       AArch64CPUTestParams("exynos-m5", "armv8.2-a"),
@@ -1260,11 +1261,12 @@ INSTANTIATE_TEST_SUITE_P(
                       AArch64CPUAliasTestParams({"apple-a15", "apple-m2"}),
                       AArch64CPUAliasTestParams({"apple-a16", "apple-m3",
                                                  "apple-s9", "apple-s10"}),
-                      AArch64CPUAliasTestParams({"apple-m4", "apple-a18"})),
+                      AArch64CPUAliasTestParams({"apple-m4", "apple-a18"}),
+                      AArch64CPUAliasTestParams({"apple-m5", "apple-a19"})),
     AArch64CPUAliasTestParams::PrintToStringParamName);
 
 // Note: number of CPUs includes aliases.
-static constexpr unsigned NumAArch64CPUArchs = 91;
+static constexpr unsigned NumAArch64CPUArchs = 93;
 
 TEST(TargetParserTest, testAArch64CPUArchList) {
   SmallVector<StringRef, NumAArch64CPUArchs> List;

@dtellenbach dtellenbach left a comment

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LGTM, thanks!

@fhahn fhahn left a comment

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LGTM, thanks!

@davemgreen davemgreen left a comment

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Hi - Should the new isAppleMLike from #170553 also be true for this core? (Mostly asking for when I change it in #171088)

@fhahn

fhahn commented Dec 9, 2025

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Hi - Should the new isAppleMLike from #170553 also be true for this core? (Mostly asking for when I change it in #171088)

Yep it should and the current patch adds it to the correct switch AFAICT. Might be good to add a run-line with m5/a19 to llvm/test/Transforms/LoopUnroll/AArch64/apple-unrolling.ll

To check the max-interleave factor is set correctly, it would probably be good to have a simple LoopVectorize interleave test for the various CPUs.

@davemgreen

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Oh yeah. I missed it, I was looking in the wrong file.

@ahmedbougacha ahmedbougacha merged commit f85494f into llvm:main Dec 10, 2025
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@ahmedbougacha ahmedbougacha deleted the users/ahmedbougacha/apple-m5-a19 branch December 10, 2025 14:00
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