[AARCH64] Add support for Cortex-A320 (#139055)

This patch adds initial support for the recently announced Armv9
Cortex-A320 processor.

For more information, including the Technical Reference Manual, see:
https://developer.arm.com/Processors/Cortex-A320

---------

Co-authored-by: Oliver Stannard <oliver.stannard@arm.com>

4 files changed, 70 insertions, 0 deletions

diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index f7d56cf..3f38d51 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -728,6 +728,9 @@ X86 Support
 
 Arm and AArch64 Support
 ^^^^^^^^^^^^^^^^^^^^^^^
+
+- Support has been added for the following processors (command-line identifiers in parentheses):
+  - Arm Cortex-A320 (``cortex-a320``)
 - For ARM targets, cc1as now considers the FPU's features for the selected CPU or Architecture.
 - The ``+nosimd`` attribute is now fully supported for ARM. Previously, this had no effect when being used with
   ARM targets, however this will now disable NEON instructions being generated. The ``simd`` option is
diff --git a/clang/test/Driver/aarch64-cortex-a320.c b/clang/test/Driver/aarch64-cortex-a320.c
new file mode 100644
index 0000000..d0b180b
--- /dev/null
+++ b/clang/test/Driver/aarch64-cortex-a320.c
@@ -0,0 +1,6 @@
+// RUN: not %clang --target=arm-arm-none-eabi -mcpu=cortex-a320 %s 2>&1 | FileCheck %s
+// CHECK: error: unsupported argument {{.*}} to option '-mcpu='
+
+// RUN: %clang -target aarch64 -mcpu=cortex-a320 -### -c %s 2>&1 | FileCheck -check-prefix=A320 %s
+// A320: "-cc1"{{.*}} "-triple" "aarch64{{.*}}" "-target-cpu" "cortex-a320"
+
diff --git a/clang/test/Driver/print-enabled-extensions/aarch64-cortex-a320.c b/clang/test/Driver/print-enabled-extensions/aarch64-cortex-a320.c
new file mode 100644
index 0000000..eed8903
--- /dev/null
+++ b/clang/test/Driver/print-enabled-extensions/aarch64-cortex-a320.c
@@ -0,0 +1,60 @@
+// REQUIRES: aarch64-registered-target
+// RUN: %clang --target=aarch64 --print-enabled-extensions -mcpu=cortex-a320 | 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_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_CCIDX                                             Enable Armv8.3-A Extend of the CCSIDR number of sets
+// CHECK-NEXT:     FEAT_CRC32                                             Enable Armv8.0-A CRC-32 checksum 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_ETE                                               Enable Embedded Trace 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_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_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
+// 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
+// CHECK-NEXT:     FEAT_SEL2                                              Enable Armv8.4-A Secure Exception Level 2 extension
+// CHECK-NEXT:     FEAT_SPECRES                                           Enable Armv8.5-A execution and data prediction invalidation instructions
+// CHECK-NEXT:     FEAT_SSBS, FEAT_SSBS2                                  Enable Speculative Store Bypass Safe bit
+// CHECK-NEXT:     FEAT_SVE                                               Enable Scalable Vector Extension (SVE) instructions
+// CHECK-NEXT:     FEAT_SVE2                                              Enable Scalable Vector Extension 2 (SVE2) instructions
+// CHECK-NEXT:     FEAT_SVE_BitPerm                                       Enable bit permutation SVE2 instructions
+// CHECK-NEXT:     FEAT_TLBIOS, FEAT_TLBIRANGE                            Enable Armv8.4-A TLB Range and Maintenance instructions
+// CHECK-NEXT:     FEAT_TRBE                                              Enable Trace Buffer Extension
+// 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/Misc/target-invalid-cpu-note/aarch64.c b/clang/test/Misc/target-invalid-cpu-note/aarch64.c
index e8e728a..0a5c485 100644
--- a/clang/test/Misc/target-invalid-cpu-note/aarch64.c
+++ b/clang/test/Misc/target-invalid-cpu-note/aarch64.c
@@ -36,6 +36,7 @@
 // CHECK-SAME: {{^}}, apple-s9
 // CHECK-SAME: {{^}}, carmel
 // CHECK-SAME: {{^}}, cobalt-100
+// CHECK-SAME: {{^}}, cortex-a320
 // CHECK-SAME: {{^}}, cortex-a34
 // CHECK-SAME: {{^}}, cortex-a35
 // CHECK-SAME: {{^}}, cortex-a510