[clang] [clang][AArch64] Add SME2.1 feature macros (PR #105657)
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Thu Aug 22 06:21:45 PDT 2024
https://github.com/SpencerAbson created https://github.com/llvm/llvm-project/pull/105657
This patch adds the following macros to clang which are described in the alpha SME2.1 specification ([ACLE](https://github.com/ARM-software/acle/pull/309/files)).
- __ARM_FEATURE_SMEB16B16 (enabled by '+sme-b16b16')
- __ARM_FEATURE_SVEB16B16 (enabled by '+sve-b16b16' or '+sme-b16b16')
- __ARM_FEATURE_SMEF16F16 (enabled by '+sme-f16f16')
Redundant use of the clang macro-builder has also been removed, pre-processor tests have been added for each new macro.
>From 00a9729b2c9165216bb121ef21c71cef804dd429 Mon Sep 17 00:00:00 2001
From: Spencer Abson <Spencer.Abson at arm.com>
Date: Thu, 22 Aug 2024 13:14:19 +0000
Subject: [PATCH] [clang][AArch64] Add SME2.1 feature macros
This patch adds the following macros to clang which are described in the
alpha SME2.1 specification within the ACLE
(https://github.com/ARM-software/acle/pull/309/files)
- __ARM_FEATURE_SMEB16B16 (enabled by '+sme-b16b16')
- __ARM_FEATURE_SVEB16B16 (enabled by '+sve-b16b16' or '+sme-b16b16')
- __ARM_FEATURE_SMEF16F16 (enabled by '+sme-f16f16')
Redundant use of the clang macro-builder has also been removed, pre-processor
tests have been added for each new macro.
---
clang/lib/Basic/Targets/AArch64.cpp | 40 ++++++++++++++-----
clang/lib/Basic/Targets/AArch64.h | 3 ++
.../Preprocessor/aarch64-target-features.c | 16 ++++++++
3 files changed, 50 insertions(+), 9 deletions(-)
diff --git a/clang/lib/Basic/Targets/AArch64.cpp b/clang/lib/Basic/Targets/AArch64.cpp
index 6ba31cc05a0d75..63fc15f916c558 100644
--- a/clang/lib/Basic/Targets/AArch64.cpp
+++ b/clang/lib/Basic/Targets/AArch64.cpp
@@ -471,23 +471,25 @@ void AArch64TargetInfo::getTargetDefines(const LangOptions &Opts,
if (HasSVE2 && HasSVE2SM4)
Builder.defineMacro("__ARM_FEATURE_SVE2_SM4", "1");
+ if (HasSVEB16B16)
+ Builder.defineMacro("__ARM_FEATURE_SVE_B16B16", "1");
+
if (HasSME) {
Builder.defineMacro("__ARM_FEATURE_SME");
Builder.defineMacro("__ARM_FEATURE_LOCALLY_STREAMING", "1");
}
- if (HasSME2) {
- Builder.defineMacro("__ARM_FEATURE_SME", "1");
+ if (HasSME2)
Builder.defineMacro("__ARM_FEATURE_SME2", "1");
- Builder.defineMacro("__ARM_FEATURE_LOCALLY_STREAMING", "1");
- }
- if (HasSME2p1) {
- Builder.defineMacro("__ARM_FEATURE_SME", "1");
- Builder.defineMacro("__ARM_FEATURE_SME2", "1");
+ if (HasSME2p1)
Builder.defineMacro("__ARM_FEATURE_SME2p1", "1");
- Builder.defineMacro("__ARM_FEATURE_LOCALLY_STREAMING", "1");
- }
+
+ if (HasSMEF16F16)
+ Builder.defineMacro("__ARM_FEATURE_SME_F16F16", "1");
+
+ if (HasSMEB16B16)
+ Builder.defineMacro("__ARM_FEATURE_SME_B16B16", "1");
if (HasCRC)
Builder.defineMacro("__ARM_FEATURE_CRC32", "1");
@@ -749,6 +751,7 @@ bool AArch64TargetInfo::hasFeature(StringRef Feature) const {
.Case("sve", FPU & SveMode)
.Case("sve-bf16", FPU & SveMode && HasBFloat16)
.Case("sve-i8mm", FPU & SveMode && HasMatMul)
+ .Case("sve-b16b16", HasSVEB16B16)
.Case("f32mm", FPU & SveMode && HasMatmulFP32)
.Case("f64mm", FPU & SveMode && HasMatmulFP64)
.Case("sve2", FPU & SveMode && HasSVE2)
@@ -763,6 +766,8 @@ bool AArch64TargetInfo::hasFeature(StringRef Feature) const {
.Case("sme-f64f64", HasSMEF64F64)
.Case("sme-i16i64", HasSMEI16I64)
.Case("sme-fa64", HasSMEFA64)
+ .Case("sme-f16f16", HasSMEF16F16)
+ .Case("sme-b16b16", HasSMEB16B16)
.Cases("memtag", "memtag2", HasMTE)
.Case("sb", HasSB)
.Case("predres", HasPredRes)
@@ -863,6 +868,8 @@ bool AArch64TargetInfo::handleTargetFeatures(std::vector<std::string> &Features,
HasSVE2 = true;
HasSVE2SM4 = true;
}
+ if (Feature == "+sve-b16b16")
+ HasSVEB16B16 = true;
if (Feature == "+sve2-bitperm") {
FPU |= NeonMode;
FPU |= SveMode;
@@ -919,6 +926,21 @@ bool AArch64TargetInfo::handleTargetFeatures(std::vector<std::string> &Features,
HasSVE2 = true;
HasSMEFA64 = true;
}
+ if (Feature == "+sme-f16f16") {
+ HasSME = true;
+ HasSME2 = true;
+ HasBFloat16 = true;
+ HasFullFP16 = true;
+ HasSMEF16F16 = true;
+ }
+ if (Feature == "+sme-b16b16") {
+ HasSME = true;
+ HasSME2 = true;
+ HasBFloat16 = true;
+ HasFullFP16 = true;
+ HasSVEB16B16 = true;
+ HasSMEB16B16 = true;
+ }
if (Feature == "+sb")
HasSB = true;
if (Feature == "+predres")
diff --git a/clang/lib/Basic/Targets/AArch64.h b/clang/lib/Basic/Targets/AArch64.h
index 7bdf5a2b4106e4..526f7f30a38618 100644
--- a/clang/lib/Basic/Targets/AArch64.h
+++ b/clang/lib/Basic/Targets/AArch64.h
@@ -53,6 +53,7 @@ class LLVM_LIBRARY_VISIBILITY AArch64TargetInfo : public TargetInfo {
bool HasSVE2AES = false;
bool HasSVE2SHA3 = false;
bool HasSVE2SM4 = false;
+ bool HasSVEB16B16 = false;
bool HasSVE2BitPerm = false;
bool HasMatmulFP64 = false;
bool HasMatmulFP32 = false;
@@ -71,6 +72,8 @@ class LLVM_LIBRARY_VISIBILITY AArch64TargetInfo : public TargetInfo {
bool HasSME2 = false;
bool HasSMEF64F64 = false;
bool HasSMEI16I64 = false;
+ bool HasSMEF16F16 = false;
+ bool HasSMEB16B16 = false;
bool HasSME2p1 = false;
bool HasSB = false;
bool HasPredRes = false;
diff --git a/clang/test/Preprocessor/aarch64-target-features.c b/clang/test/Preprocessor/aarch64-target-features.c
index 87bd3e142d2c40..ae2bdda6f536c5 100644
--- a/clang/test/Preprocessor/aarch64-target-features.c
+++ b/clang/test/Preprocessor/aarch64-target-features.c
@@ -709,3 +709,19 @@
// CHECK-SME2p1: __ARM_FEATURE_SME 1
// CHECK-SME2p1: __ARM_FEATURE_SME2 1
// CHECK-SME2p1: __ARM_FEATURE_SME2p1 1
+
+// RUN: %clang --target=aarch64 -march=armv9-a+sve-b16b16 -x c -E -dM %s -o - | FileCheck --check-prefix=CHECK-SVEB16B16 %s
+// CHECK-SVEB16B16: __ARM_FEATURE_SVE_B16B16 1
+
+// RUN: %clang --target=aarch64 -march=armv9-a+sme-f16f16 -x c -E -dM %s -o - | FileCheck --check-prefix=CHECK-SMEF16F16 %s
+// CHECK-SMEF16F16: __ARM_FEATURE_LOCALLY_STREAMING 1
+// CHECK-SMEF16F16: __ARM_FEATURE_SME 1
+// CHECK-SMEF16F16: __ARM_FEATURE_SME2 1
+// CHECK-SMEF16F16: __ARM_FEATURE_SME_F16F16 1
+
+// RUN: %clang --target=aarch64 -march=armv9-a+sme-b16b16 -x c -E -dM %s -o - | FileCheck --check-prefix=CHECK-SMEB16B16 %s
+// CHECK-SMEB16B16: __ARM_FEATURE_LOCALLY_STREAMING 1
+// CHECK-SMEB16B16: __ARM_FEATURE_SME 1
+// CHECK-SMEB16B16: __ARM_FEATURE_SME2 1
+// CHECK-SMEB16B16: __ARM_FEATURE_SME_B16B16 1
+// CHECK-SMEB16B16: __ARM_FEATURE_SVE_B16B16 1
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