[clang] [llvm] [AArch64] Add ability to list extensions enabled for a target (PR #95805)
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cfe-commits at lists.llvm.org
Mon Jun 17 08:43:18 PDT 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-clang-driver
Author: Lucas Duarte Prates (pratlucas)
<details>
<summary>Changes</summary>
This introduces the new '--print-enabled-extensions' command line option
to AArch64, which prints the list of extensins that are enabled for the
target specified by the combination of '--target/-march/-mcpu' values.
The new option allows the manual inspection of the enabled extensions by
users and enables us to programatically test that the correct set of
extensions are enabled for specific architecture versions or CPU models.
---
Patch is 108.34 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/95805.diff
32 Files Affected:
- (modified) clang/include/clang/Driver/Options.td (+5)
- (modified) clang/include/clang/Frontend/FrontendOptions.h (+4)
- (modified) clang/lib/Basic/Targets/AArch64.cpp (+1-1)
- (modified) clang/lib/CodeGen/Targets/AArch64.cpp (+2-2)
- (modified) clang/lib/Driver/Driver.cpp (+14-5)
- (modified) clang/lib/Driver/ToolChain.cpp (+4-4)
- (modified) clang/lib/Driver/ToolChains/Clang.cpp (+1-1)
- (modified) clang/test/Driver/aarch64-v81a.c (+16)
- (modified) clang/test/Driver/aarch64-v82a.c (+20)
- (modified) clang/test/Driver/aarch64-v83a.c (+26)
- (modified) clang/test/Driver/aarch64-v84a.c (+40)
- (modified) clang/test/Driver/aarch64-v85a.c (+48)
- (modified) clang/test/Driver/aarch64-v86a.c (+54)
- (modified) clang/test/Driver/aarch64-v87a.c (+57)
- (modified) clang/test/Driver/aarch64-v88a.c (+60)
- (modified) clang/test/Driver/aarch64-v89a.c (+67)
- (added) clang/test/Driver/aarch64-v8a.c (+31)
- (modified) clang/test/Driver/aarch64-v91a.c (+63)
- (modified) clang/test/Driver/aarch64-v92a.c (+66)
- (modified) clang/test/Driver/aarch64-v93a.c (+69)
- (modified) clang/test/Driver/aarch64-v94a.c (+75)
- (modified) clang/test/Driver/aarch64-v95a.c (+78)
- (added) clang/test/Driver/aarch64-v9a.c (+72)
- (modified) clang/test/Driver/print-supported-extensions.c (+2-2)
- (modified) clang/tools/driver/cc1_main.cpp (+39-1)
- (modified) llvm/include/llvm/MC/MCSubtargetInfo.h (+3)
- (modified) llvm/include/llvm/TargetParser/AArch64TargetParser.h (+8-4)
- (modified) llvm/lib/MC/MCSubtargetInfo.cpp (+10)
- (modified) llvm/lib/Target/AArch64/AArch64Features.td (+485-426)
- (modified) llvm/lib/TargetParser/AArch64TargetParser.cpp (+38-14)
- (modified) llvm/unittests/TargetParser/TargetParserTest.cpp (+2-8)
- (modified) llvm/utils/TableGen/ARMTargetDefEmitter.cpp (+3-1)
``````````diff
diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
index 49b44893c25f2..6a520dc9e7062 100644
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -5703,6 +5703,11 @@ def print_supported_extensions : Flag<["-", "--"], "print-supported-extensions">
Visibility<[ClangOption, CC1Option, CLOption]>,
HelpText<"Print supported -march extensions (RISC-V, AArch64 and ARM only)">,
MarshallingInfoFlag<FrontendOpts<"PrintSupportedExtensions">>;
+def print_enabled_extensions : Flag<["-", "--"], "print-enabled-extensions">,
+ Visibility<[ClangOption, CC1Option, CLOption]>,
+ HelpText<"Print the -march/-mcpu extensions enabled for the given target"
+ " (AArch64 only)">,
+ MarshallingInfoFlag<FrontendOpts<"PrintEnabledExtensions">>;
def : Flag<["-"], "mcpu=help">, Alias<print_supported_cpus>;
def : Flag<["-"], "mtune=help">, Alias<print_supported_cpus>;
def time : Flag<["-"], "time">,
diff --git a/clang/include/clang/Frontend/FrontendOptions.h b/clang/include/clang/Frontend/FrontendOptions.h
index ebb8e9e59c6b6..5e5034fe01eb5 100644
--- a/clang/include/clang/Frontend/FrontendOptions.h
+++ b/clang/include/clang/Frontend/FrontendOptions.h
@@ -306,6 +306,10 @@ class FrontendOptions {
LLVM_PREFERRED_TYPE(bool)
unsigned PrintSupportedExtensions : 1;
+ /// Print the extensions enabled for the current target.
+ LLVM_PREFERRED_TYPE(bool)
+ unsigned PrintEnabledExtensions : 1;
+
/// Show the -version text.
LLVM_PREFERRED_TYPE(bool)
unsigned ShowVersion : 1;
diff --git a/clang/lib/Basic/Targets/AArch64.cpp b/clang/lib/Basic/Targets/AArch64.cpp
index e125ad551f098..b2c3e839b7e6c 100644
--- a/clang/lib/Basic/Targets/AArch64.cpp
+++ b/clang/lib/Basic/Targets/AArch64.cpp
@@ -1101,7 +1101,7 @@ bool AArch64TargetInfo::initFeatureMap(
std::optional<llvm::AArch64::ExtensionInfo> Extension =
llvm::AArch64::parseArchExtension(Feature.substr(1));
if (Extension)
- UpdatedFeature = Extension->Feature.str();
+ UpdatedFeature = Extension->TargetFeature.str();
}
UpdatedFeaturesVec.push_back(UpdatedFeature);
}
diff --git a/clang/lib/CodeGen/Targets/AArch64.cpp b/clang/lib/CodeGen/Targets/AArch64.cpp
index cfb4b5f58ef72..51a7221db8b83 100644
--- a/clang/lib/CodeGen/Targets/AArch64.cpp
+++ b/clang/lib/CodeGen/Targets/AArch64.cpp
@@ -966,8 +966,8 @@ void AArch64ABIInfo::appendAttributeMangling(StringRef AttrStr,
llvm::SmallDenseSet<StringRef, 8> UniqueFeats;
for (auto &Feat : Features)
if (auto Ext = llvm::AArch64::parseArchExtension(Feat))
- if (UniqueFeats.insert(Ext->Name).second)
- Out << 'M' << Ext->Name;
+ if (UniqueFeats.insert(Ext->UserVisibleName).second)
+ Out << 'M' << Ext->UserVisibleName;
}
std::unique_ptr<TargetCodeGenInfo>
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 67bf0604acd6e..db7327e25f4ad 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -370,6 +370,7 @@ phases::ID Driver::getFinalPhase(const DerivedArgList &DAL,
// -{fsyntax-only,-analyze,emit-ast} only run up to the compiler.
} else if ((PhaseArg = DAL.getLastArg(options::OPT_fsyntax_only)) ||
(PhaseArg = DAL.getLastArg(options::OPT_print_supported_cpus)) ||
+ (PhaseArg = DAL.getLastArg(options::OPT_print_enabled_extensions)) ||
(PhaseArg = DAL.getLastArg(options::OPT_module_file_info)) ||
(PhaseArg = DAL.getLastArg(options::OPT_verify_pch)) ||
(PhaseArg = DAL.getLastArg(options::OPT_rewrite_objc)) ||
@@ -2171,7 +2172,8 @@ bool Driver::HandleImmediateArgs(const Compilation &C) {
if (C.getArgs().hasArg(options::OPT_v) ||
C.getArgs().hasArg(options::OPT__HASH_HASH_HASH) ||
C.getArgs().hasArg(options::OPT_print_supported_cpus) ||
- C.getArgs().hasArg(options::OPT_print_supported_extensions)) {
+ C.getArgs().hasArg(options::OPT_print_supported_extensions) ||
+ C.getArgs().hasArg(options::OPT_print_enabled_extensions)) {
PrintVersion(C, llvm::errs());
SuppressMissingInputWarning = true;
}
@@ -4351,13 +4353,14 @@ void Driver::BuildActions(Compilation &C, DerivedArgList &Args,
}
for (auto Opt : {options::OPT_print_supported_cpus,
- options::OPT_print_supported_extensions}) {
+ options::OPT_print_supported_extensions,
+ options::OPT_print_enabled_extensions}) {
// If --print-supported-cpus, -mcpu=? or -mtune=? is specified, build a
// custom Compile phase that prints out supported cpu models and quits.
//
- // If --print-supported-extensions is specified, call the helper function
- // RISCVMarchHelp in RISCVISAInfo.cpp that prints out supported extensions
- // and quits.
+ // If either --print-supported-extensions or --print-enabled-extensions is
+ // specified, call the corresponding helper function that prints out the
+ // supported/enabled extensions and quits.
if (Arg *A = Args.getLastArg(Opt)) {
if (Opt == options::OPT_print_supported_extensions &&
!C.getDefaultToolChain().getTriple().isRISCV() &&
@@ -4367,6 +4370,12 @@ void Driver::BuildActions(Compilation &C, DerivedArgList &Args,
<< "--print-supported-extensions";
return;
}
+ if (Opt == options::OPT_print_enabled_extensions &&
+ !C.getDefaultToolChain().getTriple().isAArch64()) {
+ C.getDriver().Diag(diag::err_opt_not_valid_on_target)
+ << "--print-enabled-extensions";
+ return;
+ }
// Use the -mcpu=? flag as the dummy input to cc1.
Actions.clear();
diff --git a/clang/lib/Driver/ToolChain.cpp b/clang/lib/Driver/ToolChain.cpp
index 40ab2e91125d1..a6f7ffaa0e7b1 100644
--- a/clang/lib/Driver/ToolChain.cpp
+++ b/clang/lib/Driver/ToolChain.cpp
@@ -195,11 +195,11 @@ static void getAArch64MultilibFlags(const Driver &D,
UnifiedFeatures.end());
std::vector<std::string> MArch;
for (const auto &Ext : AArch64::Extensions)
- if (FeatureSet.contains(Ext.Feature))
- MArch.push_back(Ext.Name.str());
+ if (FeatureSet.contains(Ext.TargetFeature))
+ MArch.push_back(Ext.UserVisibleName.str());
for (const auto &Ext : AArch64::Extensions)
- if (FeatureSet.contains(Ext.NegFeature))
- MArch.push_back(("no" + Ext.Name).str());
+ if (FeatureSet.contains(Ext.NegTargetFeature))
+ MArch.push_back(("no" + Ext.UserVisibleName).str());
StringRef ArchName;
for (const auto &ArchInfo : AArch64::ArchInfos)
if (FeatureSet.contains(ArchInfo->ArchFeature))
diff --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp
index 331cf6e713d89..719ec1b41859b 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -1523,7 +1523,7 @@ static void CollectARMPACBTIOptions(const ToolChain &TC, const ArgList &Args,
auto isPAuthLR = [](const char *member) {
llvm::AArch64::ExtensionInfo pauthlr_extension =
llvm::AArch64::getExtensionByID(llvm::AArch64::AEK_PAUTHLR);
- return pauthlr_extension.Feature == member;
+ return pauthlr_extension.TargetFeature == member;
};
if (std::any_of(CmdArgs.begin(), CmdArgs.end(), isPAuthLR))
diff --git a/clang/test/Driver/aarch64-v81a.c b/clang/test/Driver/aarch64-v81a.c
index e84652ec7f11e..419a2e1892c0d 100644
--- a/clang/test/Driver/aarch64-v81a.c
+++ b/clang/test/Driver/aarch64-v81a.c
@@ -19,3 +19,19 @@
// RUN: %clang --target=arm64 -mlittle-endian -march=armv8.1a -### -c %s 2>&1 | FileCheck -check-prefix=ARM64-GENERICV81A %s
// RUN: %clang --target=arm64 -mlittle-endian -march=armv8.1-a -### -c %s 2>&1 | FileCheck -check-prefix=ARM64-GENERICV81A %s
// ARM64-GENERICV81A: "-cc1"{{.*}} "-triple" "arm64{{.*}}" "-target-cpu" "generic"{{.*}} "-target-feature" "+v8.1a"{{.*}} "-target-feature" "+neon"
+
+// ===== Architecture extensions =====
+
+// RUN: %clang -target aarch64 -march=armv8.1-a --print-enabled-extensions 2>&1 | FileCheck -check-prefix=ARCH-EXTENSION --implicit-check-not FEAT_ %s
+// ARCH-EXTENSION: FEAT_ETE
+// ARCH-EXTENSION: FEAT_LOR
+// ARCH-EXTENSION: FEAT_TRBE
+// ARCH-EXTENSION: FEAT_VHE
+// ARCH-EXTENSION: FEAT_PAN
+// ARCH-EXTENSION: FEAT_CRC32
+// FIXME: FEAT_FP is optional from v8.0a
+// ARCH-EXTENSION: FEAT_FP
+// ARCH-EXTENSION: FEAT_LSE
+// ARCH-EXTENSION: FEAT_RDM
+// FIXME: FEAT_AdvSIMD is optional from v8.0a
+// ARCH-EXTENSION: FEAT_AdvSIMD
diff --git a/clang/test/Driver/aarch64-v82a.c b/clang/test/Driver/aarch64-v82a.c
index 9dd355934c105..a91423a67b845 100644
--- a/clang/test/Driver/aarch64-v82a.c
+++ b/clang/test/Driver/aarch64-v82a.c
@@ -13,3 +13,23 @@
// RUN: %clang --target=aarch64_be -mbig-endian -march=armv8.2a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV82A-BE %s
// RUN: %clang --target=aarch64_be -mbig-endian -march=armv8.2-a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV82A-BE %s
// GENERICV82A-BE: "-cc1"{{.*}} "-triple" "aarch64_be{{.*}}" "-target-cpu" "generic" "-target-feature" "+v8.2a"{{.*}} "-target-feature" "+neon"
+
+// ===== Architecture extensions =====
+
+// RUN: %clang -target aarch64 -march=armv8.2-a --print-enabled-extensions 2>&1 | FileCheck -check-prefix=ARCH-EXTENSION --implicit-check-not FEAT_ %s
+// ARCH-EXTENSION: FEAT_DPB
+// ARCH-EXTENSION: FEAT_ETE
+// ARCH-EXTENSION: FEAT_LOR
+// ARCH-EXTENSION: FEAT_TRBE
+// ARCH-EXTENSION: FEAT_VHE
+// ARCH-EXTENSION: FEAT_UAO
+// ARCH-EXTENSION: FEAT_PAN2
+// ARCH-EXTENSION: FEAT_PAN
+// ARCH-EXTENSION: FEAT_CRC32
+// FIXME: FEAT_FP is optional from v8.0a
+// ARCH-EXTENSION: FEAT_FP
+// ARCH-EXTENSION: FEAT_LSE
+// ARCH-EXTENSION: FEAT_RAS, FEAT_RASv1p1
+// ARCH-EXTENSION: FEAT_RDM
+// FIXME: FEAT_AdvSIMD is optional from v8.0a
+// ARCH-EXTENSION: FEAT_AdvSIMD
diff --git a/clang/test/Driver/aarch64-v83a.c b/clang/test/Driver/aarch64-v83a.c
index b0ff9fb3abc24..84f3c5e878328 100644
--- a/clang/test/Driver/aarch64-v83a.c
+++ b/clang/test/Driver/aarch64-v83a.c
@@ -13,3 +13,29 @@
// RUN: %clang --target=aarch64_be -mbig-endian -march=armv8.3a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV83A-BE %s
// RUN: %clang --target=aarch64_be -mbig-endian -march=armv8.3-a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV83A-BE %s
// GENERICV83A-BE: "-cc1"{{.*}} "-triple" "aarch64_be{{.*}}" "-target-cpu" "generic" "-target-feature" "+v8.3a"{{.*}} "-target-feature" "+neon"
+
+// ===== Architecture extensions =====
+
+// RUN: %clang -target aarch64 -march=armv8.3-a --print-enabled-extensions 2>&1 | FileCheck -check-prefix=ARCH-EXTENSION --implicit-check-not FEAT_ %s
+// ARCH-EXTENSION: FEAT_DPB
+// ARCH-EXTENSION: FEAT_ETE
+// ARCH-EXTENSION: FEAT_LOR
+// ARCH-EXTENSION: FEAT_TRBE
+// ARCH-EXTENSION: FEAT_VHE
+// FIXME: FEAT_CCIDX is optional from v8.3a
+// ARCH-EXTENSION: FEAT_CCIDX
+// ARCH-EXTENSION: FEAT_UAO
+// ARCH-EXTENSION: FEAT_PAN2
+// ARCH-EXTENSION: FEAT_PAN
+// ARCH-EXTENSION: FEAT_CRC32
+// ARCH-EXTENSION: FEAT_FCMA
+// FIXME: FEAT_FP is optional from v8.0a
+// ARCH-EXTENSION: FEAT_FP
+// ARCH-EXTENSION: FEAT_JSCVT
+// ARCH-EXTENSION: FEAT_LSE
+// ARCH-EXTENSION: FEAT_PAuth
+// ARCH-EXTENSION: FEAT_RAS, FEAT_RASv1p1
+// ARCH-EXTENSION: FEAT_LRCPC
+// ARCH-EXTENSION: FEAT_RDM
+// FIXME: FEAT_AdvSIMD is optional from v8.0a
+// ARCH-EXTENSION: FEAT_AdvSIMD
diff --git a/clang/test/Driver/aarch64-v84a.c b/clang/test/Driver/aarch64-v84a.c
index 030990bfe5131..28062cc16d4e8 100644
--- a/clang/test/Driver/aarch64-v84a.c
+++ b/clang/test/Driver/aarch64-v84a.c
@@ -13,3 +13,43 @@
// RUN: %clang --target=aarch64_be -mbig-endian -march=armv8.4a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV84A-BE %s
// RUN: %clang --target=aarch64_be -mbig-endian -march=armv8.4-a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV84A-BE %s
// GENERICV84A-BE: "-cc1"{{.*}} "-triple" "aarch64_be{{.*}}" "-target-cpu" "generic" "-target-feature" "+v8.4a"{{.*}} "-target-feature" "+neon"
+
+// ===== Architecture extensions =====
+
+// RUN: %clang -target aarch64 -march=armv8.4-a --print-enabled-extensions 2>&1 | FileCheck -check-prefix=ARCH-EXTENSION --implicit-check-not FEAT_ %s
+// ARCH-EXTENSION: FEAT_TLBIOS, FEAT_TLBIRANGE
+// FIXME: FEAT_AMUv1 is optional from v8.4a
+// ARCH-EXTENSION: FEAT_AMUv1
+// ARCH-EXTENSION: FEAT_DPB
+// ARCH-EXTENSION: FEAT_ETE
+// ARCH-EXTENSION: FEAT_LOR
+// ARCH-EXTENSION: FEAT_LSE2
+// FIXME: FEAT_MPAM is optional from v8.4a
+// ARCH-EXTENSION: FEAT_MPAM
+// ARCH-EXTENSION: FEAT_LRCPC2
+// ARCH-EXTENSION: FEAT_TRF
+// ARCH-EXTENSION: FEAT_TRBE
+// ARCH-EXTENSION: FEAT_VHE
+// FIXME: FEAT_CCIDX is optional from v8.3a
+// ARCH-EXTENSION: FEAT_CCIDX
+// ARCH-EXTENSION: FEAT_UAO
+// ARCH-EXTENSION: FEAT_SEL2
+// ARCH-EXTENSION: FEAT_PAN2
+// ARCH-EXTENSION: FEAT_PAN
+// FIXME: FEAT_NV/FEAT_NV2 are optional from v8.4a
+// ARCH-EXTENSION: FEAT_NV, FEAT_NV2
+// ARCH-EXTENSION: FEAT_CRC32
+// ARCH-EXTENSION: FEAT_DIT
+// ARCH-EXTENSION: FEAT_DotProd
+// ARCH-EXTENSION: FEAT_FCMA
+// ARCH-EXTENSION: FEAT_FlagM
+// FIXME: FEAT_FP is optional from v8.0a
+// ARCH-EXTENSION: FEAT_FP
+// ARCH-EXTENSION: FEAT_JSCVT
+// ARCH-EXTENSION: FEAT_LSE
+// ARCH-EXTENSION: FEAT_PAuth
+// ARCH-EXTENSION: FEAT_RAS, FEAT_RASv1p1
+// ARCH-EXTENSION: FEAT_LRCPC
+// ARCH-EXTENSION: FEAT_RDM
+// FIXME: FEAT_AdvSIMD is optional from v8.0a
+// ARCH-EXTENSION: FEAT_AdvSIMD
diff --git a/clang/test/Driver/aarch64-v85a.c b/clang/test/Driver/aarch64-v85a.c
index 3e1e921dcc013..32945e435b402 100644
--- a/clang/test/Driver/aarch64-v85a.c
+++ b/clang/test/Driver/aarch64-v85a.c
@@ -13,3 +13,51 @@
// RUN: %clang --target=aarch64_be -mbig-endian -march=armv8.5a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV85A-BE %s
// RUN: %clang --target=aarch64_be -mbig-endian -march=armv8.5-a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV85A-BE %s
// GENERICV85A-BE: "-cc1"{{.*}} "-triple" "aarch64_be{{.*}}" "-target-cpu" "generic" "-target-feature" "+v8.5a"{{.*}} "-target-feature" "+neon"
+
+// ===== Architecture extensions =====
+
+// RUN: %clang -target aarch64 -march=armv8.5-a --print-enabled-extensions 2>&1 | FileCheck -check-prefix=ARCH-EXTENSION --implicit-check-not FEAT_ %s
+// ARCH-EXTENSION: FEAT_TLBIOS, FEAT_TLBIRANGE
+// FIXME: FEAT_AMUv1 is optional from v8.4a
+// ARCH-EXTENSION: FEAT_AMUv1
+// ARCH-EXTENSION: FEAT_DPB
+// ARCH-EXTENSION: FEAT_DPB2
+// ARCH-EXTENSION: FEAT_ETE
+// ARCH-EXTENSION: FEAT_FRINTTS
+// ARCH-EXTENSION: FEAT_LOR
+// ARCH-EXTENSION: FEAT_CSV2_2
+// ARCH-EXTENSION: FEAT_LSE2
+// FIXME: FEAT_MPAM is optional from v8.4a
+// ARCH-EXTENSION: FEAT_MPAM
+// ARCH-EXTENSION: FEAT_LRCPC2
+// ARCH-EXTENSION: FEAT_FlagM2
+// ARCH-EXTENSION: FEAT_TRF
+// ARCH-EXTENSION: FEAT_TRBE
+// ARCH-EXTENSION: FEAT_VHE
+// FIXME: FEAT_CCIDX is optional from v8.3a
+// ARCH-EXTENSION: FEAT_CCIDX
+// ARCH-EXTENSION: FEAT_UAO
+// ARCH-EXTENSION: FEAT_SEL2
+// ARCH-EXTENSION: FEAT_PAN2
+// ARCH-EXTENSION: FEAT_PAN
+// FIXME: FEAT_NV/FEAT_NV2 are optional from v8.4a
+// ARCH-EXTENSION: FEAT_NV, FEAT_NV2
+// ARCH-EXTENSION: FEAT_CRC32
+// ARCH-EXTENSION: FEAT_DIT
+// ARCH-EXTENSION: FEAT_DotProd
+// ARCH-EXTENSION: FEAT_FCMA
+// ARCH-EXTENSION: FEAT_FlagM
+// FIXME: FEAT_FP is optional from v8.0a
+// ARCH-EXTENSION: FEAT_FP
+// ARCH-EXTENSION: FEAT_JSCVT
+// ARCH-EXTENSION: FEAT_LSE
+// ARCH-EXTENSION: FEAT_PAuth
+// ARCH-EXTENSION: FEAT_SPECRES
+// ARCH-EXTENSION: FEAT_RAS, FEAT_RASv1p1
+// ARCH-EXTENSION: FEAT_LRCPC
+// ARCH-EXTENSION: FEAT_RDM
+// ARCH-EXTENSION: FEAT_SB
+// FIXME: FEAT_AdvSIMD is optional from v8.0a
+// ARCH-EXTENSION: FEAT_AdvSIMD
+// FIXME: FEAT_SSBS/FEAT_SSBS2 are optional from v8.0a
+// ARCH-EXTENSION: FEAT_SSBS, FEAT_SSBS2
diff --git a/clang/test/Driver/aarch64-v86a.c b/clang/test/Driver/aarch64-v86a.c
index ba2b57979b518..c0ca90fe49d17 100644
--- a/clang/test/Driver/aarch64-v86a.c
+++ b/clang/test/Driver/aarch64-v86a.c
@@ -13,3 +13,57 @@
// RUN: %clang --target=aarch64_be -mbig-endian -march=armv8.6a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV86A-BE %s
// RUN: %clang --target=aarch64_be -mbig-endian -march=armv8.6-a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV86A-BE %s
// GENERICV86A-BE: "-cc1"{{.*}} "-triple" "aarch64_be{{.*}}" "-target-cpu" "generic" "-target-feature" "+v8.6a"{{.*}} "-target-feature" "+neon"
+
+// ===== Architecture extensions =====
+
+// RUN: %clang -target aarch64 -march=armv8.6-a --print-enabled-extensions 2>&1 | FileCheck -check-prefix=ARCH-EXTENSION --implicit-check-not FEAT_ %s
+// ARCH-EXTENSION: FEAT_TLBIOS, FEAT_TLBIRANGE
+// FIXME: FEAT_AMUv1 is optional from v8.4a
+// ARCH-EXTENSION: FEAT_AMUv1
+// FIXME: FEAT_AMUv1p1 is optional from v8.6a
+// ARCH-EXTENSION: FEAT_AMUv1p1
+// ARCH-EXTENSION: FEAT_DPB
+// ARCH-EXTENSION: FEAT_DPB2
+// ARCH-EXTENSION: FEAT_ETE
+// ARCH-EXTENSION: FEAT_ECV
+// ARCH-EXTENSION: FEAT_FRINTTS
+// ARCH-EXTENSION: FEAT_FGT
+// ARCH-EXTENSION: FEAT_LOR
+// ARCH-EXTENSION: FEAT_CSV2_2
+// ARCH-EXTENSION: FEAT_LSE2
+// FIXME: FEAT_MPAM is optional from v8.4a
+// ARCH-EXTENSION: FEAT_MPAM
+// ARCH-EXTENSION: FEAT_LRCPC2
+// ARCH-EXTENSION: FEAT_FlagM2
+// ARCH-EXTENSION: FEAT_TRF
+// ARCH-EXTENSION: FEAT_TRBE
+// ARCH-EXTENSION: FEAT_VHE
+// FIXME: FEAT_CCIDX is optional from v8.3a
+// ARCH-EXTENSION: FEAT_CCIDX
+// ARCH-EXTENSION: FEAT_UAO
+// ARCH-EXTENSION: FEAT_SEL2
+// ARCH-EXTENSION: FEAT_PAN2
+// ARCH-EXTENSION: FEAT_PAN
+// FIXME: FEAT_NV/FEAT_NV2 are optional from v8.4a
+// ARCH-EXTENSION: FEAT_NV, FEAT_NV2
+// ARCH-EXTENSION: FEAT_BF16
+// ARCH-EXTENSION: FEAT_CRC32
+// ARCH-EXTENSION: FEAT_DIT
+// ARCH-EXTENSION: FEAT_DotProd
+// ARCH-EXTENSION: FEAT_FCMA
+// ARCH-EXTENSION: FEAT_FlagM
+// FIXME: FEAT_FP is optional from v8.0a
+// ARCH-EXTENSION: FEAT_FP
+// ARCH-EXTENSION: FEAT_I8MM
+// ARCH-EXTENSION: FEAT_JSCVT
+// ARCH-EXTENSION: FEAT_LSE
+// ARCH-EXTENSION: FEAT_PAuth
+// ARCH-EXTENSION: FEAT_SPECRES
+// ARCH-EXTENSION: FEAT_RAS, FEAT_RASv1p1
+// ARCH-EXTENSION: FEAT_LRCPC
+// ARCH-EXTENSION: FEAT_RDM
+// ARCH-EXTENSION: FEAT_SB
+// FIXME: FEAT_AdvSIMD is optional from v8.0a
+// ARCH-EXTENSION: FEAT_AdvSIMD
+// FIXME: FEAT_SSBS/FEAT_SSBS2 are optional from v8.0a
+// ARCH-EXTENSION: FEAT_SSBS, FEAT_SSBS2
diff --git a/clang/test/Driver/aarch64-v87a.c b/clang/test/Driver/aarch64-v87a.c
index ee4b68882739a..29001fe76f480 100644
--- a/clang/test/Driver/aarch64-v87a.c
+++ b/clang/test/Driver/aarch64-v87a.c
@@ -13,3 +13,60 @@
// RUN: %clang --target=aarch64_be -mbig-endian -march=armv8.7a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV87A-BE %s
// RUN: %clang --target=aarch64_be -mbig-endian -march=armv8.7-a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV87A-BE %s
// GENERICV87A-BE: "-cc1"{{.*}} "-triple" "aarch64_be{{.*}}" "-target-cpu" "generic" "-target-feature" "+v8.7a"{{.*}} "-target-feature" "+neon"
+
+// ===== Architecture extensions =====
+
+// RUN: %clang -target aarch64 -march=armv8.7-a --print-enabled-extensions 2>&1 | FileCheck -check-prefix=ARCH-EXTENSION --implicit-check-not FEAT_ %s
+// ARCH-EXTENSION: FEAT_TLBIOS, FEAT_TLBIRANGE
+// FIXME: FEAT_AMUv1 is optional from v8.4a
+// ARCH-EXTENSION: FEAT_AMUv1
+// FIXME: FEAT_AMUv1p1 is optional from v8.6a
+// ARCH-EXTENSION: FEAT_AMUv1p1
+// ARCH-EXTENSION: FEAT_DPB
+// ARCH-EXTENSION: FEAT_DPB2
+// ARCH-EXTENSION: FEAT_ETE
+// ARCH-EXTENSION: FEAT_ECV
+// ARCH-EXTENSION: FEAT_FRINTTS
+// ARCH-EXTENSION: FEAT_FGT
+// ARCH-EXTENSION: FEAT_HCX
+// ARCH-EXTENSION: FEAT_LOR
+// ARCH-EXTENSION: FEAT_CSV2_2
+// ARCH-EXTENSION: FEAT_LSE2
+// FIXME: FEAT_MPAM is optional from v8.4a
+// ARCH-EXTENSION: FEAT_MPAM
+// ARCH-EXTENSION: FEAT_LRCPC2
+// ARCH-EXTENSION: FEAT_FlagM2
+// ARCH-EXTENSION: FEAT_TRF
+// ARCH-EXTENSION: FEAT_TRBE
+// ARCH-EXTENSION: FEAT_VHE
+// ARCH-EXTENSION: FEAT_XS
+// FIXME: FEAT_CCIDX is optional from v8.3a
+// ARCH-EXTENSION: FEAT_CCIDX
+// ARCH-EXTENSION: FEAT_UAO
+// ARCH-EXTENSION: FEAT_SEL2
+// ARCH-EXTENSION: FEAT_PAN2
+// ARCH-EXTENSION: FEAT_PAN
+// FIXME: FEAT_NV/FEAT_NV2 are optional from v8.4a
+// ARCH-EXTENSION: FEAT_NV, FEAT_NV2
+// ARCH-EXTENSION: FEAT_BF16
+// ARCH-EXTENSION: FEAT_CRC32
+// ARCH-EXTENSION: FEAT_DIT
+// ARCH-EXTENSION: FEAT_DotProd
+// ARCH-EXTENSION: FEAT_FCMA
+// ARCH-EXTENSION: FEAT_FlagM
+// FIXME: FEAT_FP is optional from v8.0a
+// ARCH-EXTENSION: FEAT_FP
+// ARCH-EXTENSION: FEAT_I8MM
+// ARCH-EXTENSI...
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/95805
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