maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[AArch64] Add Neoverse V2 CPU support 

Adds support for the Neoverse V2 CPU to the AArch64 backend.

Differential Revision: https://reviews.llvm.org/D134352
This commit is contained in:
David Sherwood 2022-09-15 12:18:14 +00:00
parent 275bee32ad
commit fbb119412f
10 changed files with 40 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
clang/docs/ReleaseNotes.rst
View File

@ -404,6 +404,8 @@ Arm and AArch64 Support in Clang
- ``-march`` values for targeting armv2, armv2A, armv3 and armv3M have been removed.
Their presence gave the impression that Clang can correctly generate code for
them, which it cannot.
- Add driver and tuning support for Neoverse V2 via the flag ``-mcpu=neoverse-v2``.
Native detection is also supported via ``-mcpu=native``.
Floating Point Support in Clang
-------------------------------

2
clang/test/Driver/aarch64-mcpu.c
View File

@ -49,6 +49,8 @@
// NEOVERSE-E1: "-cc1"{{.*}} "-triple" "aarch64{{.*}}" "-target-cpu" "neoverse-e1"
// RUN: %clang -target aarch64 -mcpu=neoverse-v1 -### -c %s 2>&1 | FileCheck -check-prefix=NEOVERSE-V1 %s
// NEOVERSE-V1: "-cc1"{{.*}} "-triple" "aarch64{{.*}}" "-target-cpu" "neoverse-v1"
// RUN: %clang -target aarch64 -mcpu=neoverse-v2 -### -c %s 2>&1 | FileCheck -check-prefix=NEOVERSE-V2 %s
// NEOVERSE-V2: "-cc1"{{.*}} "-triple" "aarch64{{.*}}" "-target-cpu" "neoverse-v2"
// RUN: %clang -target aarch64 -mcpu=neoverse-n1 -### -c %s 2>&1 | FileCheck -check-prefix=NEOVERSE-N1 %s
// NEOVERSE-N1: "-cc1"{{.*}} "-triple" "aarch64{{.*}}" "-target-cpu" "neoverse-n1"
// RUN: %clang -target aarch64 -mcpu=neoverse-n2 -### -c %s 2>&1 | FileCheck -check-prefix=NEOVERSE-N2 %s

4
clang/test/Misc/target-invalid-cpu-note.c
View File

@ -5,11 +5,11 @@
// RUN: not %clang_cc1 -triple arm64--- -target-cpu not-a-cpu -fsyntax-only %s 2>&1 | FileCheck %s --check-prefix AARCH64
// AARCH64: error: unknown target CPU 'not-a-cpu'
// AARCH64-NEXT: note: valid target CPU values are: cortex-a34, cortex-a35, cortex-a53, cortex-a55, cortex-a510, cortex-a57, cortex-a65, cortex-a65ae, cortex-a72, cortex-a73, cortex-a75, cortex-a76, cortex-a76ae, cortex-a77, cortex-a78, cortex-a78c, cortex-a710, cortex-r82, cortex-x1, cortex-x1c, cortex-x2, neoverse-e1, neoverse-n1, neoverse-n2, neoverse-512tvb, neoverse-v1, cyclone, apple-a7, apple-a8, apple-a9, apple-a10, apple-a11, apple-a12, apple-a13, apple-a14, apple-a15, apple-a16, apple-m1, apple-m2, apple-s4, apple-s5, exynos-m3, exynos-m4, exynos-m5, falkor, saphira, kryo, thunderx2t99, thunderx3t110, thunderx, thunderxt88, thunderxt81, thunderxt83, tsv110, a64fx, carmel, ampere1{{$}}
// AARCH64-NEXT: note: valid target CPU values are: cortex-a34, cortex-a35, cortex-a53, cortex-a55, cortex-a510, cortex-a57, cortex-a65, cortex-a65ae, cortex-a72, cortex-a73, cortex-a75, cortex-a76, cortex-a76ae, cortex-a77, cortex-a78, cortex-a78c, cortex-a710, cortex-r82, cortex-x1, cortex-x1c, cortex-x2, neoverse-e1, neoverse-n1, neoverse-n2, neoverse-512tvb, neoverse-v1, neoverse-v2, cyclone, apple-a7, apple-a8, apple-a9, apple-a10, apple-a11, apple-a12, apple-a13, apple-a14, apple-a15, apple-a16, apple-m1, apple-m2, apple-s4, apple-s5, exynos-m3, exynos-m4, exynos-m5, falkor, saphira, kryo, thunderx2t99, thunderx3t110, thunderx, thunderxt88, thunderxt81, thunderxt83, tsv110, a64fx, carmel, ampere1{{$}}
// RUN: not %clang_cc1 -triple arm64--- -tune-cpu not-a-cpu -fsyntax-only %s 2>&1 | FileCheck %s --check-prefix TUNE_AARCH64
// TUNE_AARCH64: error: unknown target CPU 'not-a-cpu'
// TUNE_AARCH64-NEXT: note: valid target CPU values are: cortex-a34, cortex-a35, cortex-a53, cortex-a55, cortex-a510, cortex-a57, cortex-a65, cortex-a65ae, cortex-a72, cortex-a73, cortex-a75, cortex-a76, cortex-a76ae, cortex-a77, cortex-a78, cortex-a78c, cortex-a710, cortex-r82, cortex-x1, cortex-x1c, cortex-x2, neoverse-e1, neoverse-n1, neoverse-n2, neoverse-512tvb, neoverse-v1, cyclone, apple-a7, apple-a8, apple-a9, apple-a10, apple-a11, apple-a12, apple-a13, apple-a14, apple-a15, apple-a16, apple-m1, apple-m2, apple-s4, apple-s5, exynos-m3, exynos-m4, exynos-m5, falkor, saphira, kryo, thunderx2t99, thunderx3t110, thunderx, thunderxt88, thunderxt81, thunderxt83, tsv110, a64fx, carmel, ampere1{{$}}
// TUNE_AARCH64-NEXT: note: valid target CPU values are: cortex-a34, cortex-a35, cortex-a53, cortex-a55, cortex-a510, cortex-a57, cortex-a65, cortex-a65ae, cortex-a72, cortex-a73, cortex-a75, cortex-a76, cortex-a76ae, cortex-a77, cortex-a78, cortex-a78c, cortex-a710, cortex-r82, cortex-x1, cortex-x1c, cortex-x2, neoverse-e1, neoverse-n1, neoverse-n2, neoverse-512tvb, neoverse-v1, neoverse-v2, cyclone, apple-a7, apple-a8, apple-a9, apple-a10, apple-a11, apple-a12, apple-a13, apple-a14, apple-a15, apple-a16, apple-m1, apple-m2, apple-s4, apple-s5, exynos-m3, exynos-m4, exynos-m5, falkor, saphira, kryo, thunderx2t99, thunderx3t110, thunderx, thunderxt88, thunderxt81, thunderxt83, tsv110, a64fx, carmel, ampere1{{$}}
// RUN: not %clang_cc1 -triple i386--- -target-cpu not-a-cpu -fsyntax-only %s 2>&1 | FileCheck %s --check-prefix X86
// X86: error: unknown target CPU 'not-a-cpu'

6
llvm/include/llvm/Support/AArch64TargetParser.def
View File

@ -235,6 +235,12 @@ AARCH64_CPU_NAME("neoverse-v1", ARMV8_4A, FK_CRYPTO_NEON_FP_ARMV8, false,
AArch64::AEK_FP16 | AArch64::AEK_BF16 |
AArch64::AEK_DOTPROD | AArch64::AEK_PROFILE |
AArch64::AEK_RAND | AArch64::AEK_FP16FML | AArch64::AEK_I8MM))
AARCH64_CPU_NAME("neoverse-v2", ARMV9A, FK_NEON_FP_ARMV8, false,
(AArch64::AEK_SVE | AArch64::AEK_SVE2 | AArch64::AEK_SSBS |
AArch64::AEK_FP16 | AArch64::AEK_BF16 | AArch64::AEK_RAND |
AArch64::AEK_DOTPROD | AArch64::AEK_PROFILE |
AArch64::AEK_SVE2BITPERM | AArch64::AEK_FP16FML |
AArch64::AEK_I8MM | AArch64::AEK_MTE))
AARCH64_CPU_NAME("cyclone", ARMV8A, FK_CRYPTO_NEON_FP_ARMV8, false,
(AArch64::AEK_NONE))
AARCH64_CPU_NAME("apple-a7", ARMV8A, FK_CRYPTO_NEON_FP_ARMV8, false,

1
llvm/lib/Support/Host.cpp
View File

@ -218,6 +218,7 @@ StringRef sys::detail::getHostCPUNameForARM(StringRef ProcCpuinfoContent) {
.Case("0xd0c", "neoverse-n1")
.Case("0xd49", "neoverse-n2")
.Case("0xd40", "neoverse-v1")
.Case("0xd4f", "neoverse-v2")
.Default("generic");
}

12
llvm/lib/Target/AArch64/AArch64.td
View File

@ -984,6 +984,12 @@ def TuneNeoverseV1 : SubtargetFeature<"neoversev1", "ARMProcFamily", "NeoverseV1
FeatureLSLFast,
FeaturePostRAScheduler]>;
def TuneNeoverseV2 : SubtargetFeature<"neoversev2", "ARMProcFamily", "NeoverseV2",
"Neoverse V2 ARM processors", [
FeatureFuseAES,
FeatureLSLFast,
FeaturePostRAScheduler]>;
def TuneSaphira : SubtargetFeature<"saphira", "ARMProcFamily", "Saphira",
"Qualcomm Saphira processors", [
FeatureCustomCheapAsMoveHandling,
@ -1155,6 +1161,10 @@ def ProcessorFeatures {
FeatureFullFP16, FeatureMatMulInt8, FeatureNEON,
FeaturePerfMon, FeatureRandGen, FeatureSPE,
FeatureSSBS, FeatureSVE];
list<SubtargetFeature> NeoverseV2 = [HasV9_0aOps, FeatureBF16, FeatureSPE,
FeaturePerfMon, FeatureETE, FeatureMatMulInt8,
FeatureNEON, FeatureSVE2BitPerm, FeatureFP16FML,
FeatureMTE, FeatureRandGen];
list<SubtargetFeature> Saphira = [HasV8_4aOps, FeatureCrypto, FeatureFPARMv8,
FeatureNEON, FeatureSPE, FeaturePerfMon];
list<SubtargetFeature> ThunderX = [HasV8_0aOps, FeatureCRC, FeatureCrypto,
@ -1233,6 +1243,8 @@ def : ProcessorModel<"neoverse-512tvb", NeoverseN2Model,
ProcessorFeatures.Neoverse512TVB, [TuneNeoverse512TVB]>;
def : ProcessorModel<"neoverse-v1", NeoverseN2Model,
ProcessorFeatures.NeoverseV1, [TuneNeoverseV1]>;
def : ProcessorModel<"neoverse-v2", NeoverseN2Model,
ProcessorFeatures.NeoverseV2, [TuneNeoverseV2]>;
def : ProcessorModel<"exynos-m3", ExynosM3Model, ProcessorFeatures.ExynosM3,
[TuneExynosM3]>;
def : ProcessorModel<"exynos-m4", ExynosM4Model, ProcessorFeatures.ExynosM4,

1
llvm/lib/Target/AArch64/AArch64Subtarget.cpp
View File

@ -201,6 +201,7 @@ void AArch64Subtarget::initializeProperties() {
MaxBytesForLoopAlignment = 16;
break;
case NeoverseN2:
case NeoverseV2:
PrefFunctionLogAlignment = 4;
PrefLoopLogAlignment = 5;
MaxBytesForLoopAlignment = 16;

1
llvm/lib/Target/AArch64/AArch64Subtarget.h
View File

@ -76,6 +76,7 @@ public:
NeoverseN2,
Neoverse512TVB,
NeoverseV1,
NeoverseV2,
Saphira,
ThunderX2T99,
ThunderX,

1
llvm/test/CodeGen/AArch64/cpus.ll
View File

@ -23,6 +23,7 @@
; RUN: llc < %s -mtriple=arm64-unknown-unknown -mcpu=neoverse-n2 2>&1 | FileCheck %s
; RUN: llc < %s -mtriple=arm64-unknown-unknown -mcpu=neoverse-512tvb 2>&1 | FileCheck %s
; RUN: llc < %s -mtriple=arm64-unknown-unknown -mcpu=neoverse-v1 2>&1 | FileCheck %s
; RUN: llc < %s -mtriple=arm64-unknown-unknown -mcpu=neoverse-v2 2>&1 | FileCheck %s
; RUN: llc < %s -mtriple=arm64-unknown-unknown -mcpu=exynos-m3 2>&1 | FileCheck %s
; RUN: llc < %s -mtriple=arm64-unknown-unknown -mcpu=exynos-m4 2>&1 | FileCheck %s
; RUN: llc < %s -mtriple=arm64-unknown-unknown -mcpu=exynos-m5 2>&1 | FileCheck %s

13
llvm/unittests/Support/TargetParserTest.cpp
View File

@ -1026,6 +1026,17 @@ INSTANTIATE_TEST_SUITE_P(
AArch64::AEK_PROFILE | AArch64::AEK_RAND |
AArch64::AEK_FP16FML | AArch64::AEK_I8MM,
"8.4-A"),
ARMCPUTestParams(
"neoverse-v2", "armv9-a", "neon-fp-armv8",
AArch64::AEK_RAS | AArch64::AEK_SVE | AArch64::AEK_SSBS |
AArch64::AEK_RCPC | AArch64::AEK_CRC | AArch64::AEK_FP |
AArch64::AEK_SIMD | AArch64::AEK_MTE | AArch64::AEK_LSE |
AArch64::AEK_RDM | AArch64::AEK_RCPC | AArch64::AEK_DOTPROD |
AArch64::AEK_FP16 | AArch64::AEK_BF16 | AArch64::AEK_SVE2 |
AArch64::AEK_PROFILE | AArch64::AEK_FP16FML |
AArch64::AEK_I8MM | AArch64::AEK_SVE2BITPERM |
AArch64::AEK_RAND,
"9-A"),
ARMCPUTestParams("cortex-r82", "armv8-r", "crypto-neon-fp-armv8",
AArch64::AEK_CRC | AArch64::AEK_RDM |
AArch64::AEK_SSBS | AArch64::AEK_DOTPROD |
@ -1284,7 +1295,7 @@ INSTANTIATE_TEST_SUITE_P(
AArch64::AEK_LSE | AArch64::AEK_RDM,
"8.2-A")));
static constexpr unsigned NumAArch64CPUArchs = 57;
static constexpr unsigned NumAArch64CPUArchs = 58;
TEST(TargetParserTest, testAArch64CPUArchList) {
SmallVector<StringRef, NumAArch64CPUArchs> List;