[clang] [llvm] [mlir] [AArch64] Replace LLVM IR function attributes for PSTATE.ZA. (PR #79166)
Sander de Smalen via llvm-commits
llvm-commits at lists.llvm.org
Tue Jan 23 08:44:07 PST 2024
https://github.com/sdesmalen-arm created https://github.com/llvm/llvm-project/pull/79166
Since https://github.com/ARM-software/acle/pull/276 the ACLE defines attributes to better describe the use of a given SME state.
Previously the attributes merely described the possibility of it being 'shared' or 'preserved', whereas the new attributes have more semantics and also describe how the data flows through the program.
For ZT0 we already had to add new LLVM IR attributes:
* arm_new_zt0
* arm_in_zt0
* arm_out_zt0
* arm_inout_zt0
* arm_preserves_zt0
We have now done the same for ZA, such that we add:
* arm_new_za (previously `aarch64_pstate_za_new`)
* arm_in_za (more specific variation of `aarch64_pstate_za_shared`)
* arm_out_za (more specific variation of `aarch64_pstate_za_shared`)
* arm_inout_za (more specific variation of `aarch64_pstate_za_shared`)
* arm_preserves_za (previously `aarch64_pstate_za_shared, aarch64_pstate_za_preserved`)
This explicitly removes 'pstate' from the name, because with SME2 and the new ACLE attributes there is a difference between "sharing ZA" (sharing the ZA matrix register with the caller) and "sharing PSTATE.ZA" (sharing either the ZA or ZT0 register, both part of PSTATE.ZA with the caller).
>From 04c7b856bac07476a3410f1334e703054bd3859d Mon Sep 17 00:00:00 2001
From: Sander de Smalen <sander.desmalen at arm.com>
Date: Mon, 22 Jan 2024 16:50:41 +0100
Subject: [PATCH] [AArch64] Replace LLVM IR function attributes for PSTATE.ZA.
Since https://github.com/ARM-software/acle/pull/276 the ACLE
defines attributes to better describe the use of a given SME state.
Previously the attributes merely described the possibility of it being
'shared' or 'preserved', whereas the new attributes have more semantics
and also describe how the data flows through the program.
For ZT0 we already had to add new LLVM IR attributes:
* arm_new_zt0
* arm_in_zt0
* arm_out_zt0
* arm_inout_zt0
* arm_preserves_zt0
We have now done the same for ZA, such that we add:
* arm_new_za (previously `aarch64_pstate_za_new`)
* arm_in_za (more specific variation of `aarch64_pstate_za_shared`)
* arm_out_za (more specific variation of `aarch64_pstate_za_shared`)
* arm_inout_za (more specific variation of `aarch64_pstate_za_shared`)
* arm_preserves_za (previously `aarch64_pstate_za_shared, aarch64_pstate_za_preserved`)
This explicitly removes 'pstate' from the name, because with SME2 and
the new ACLE attributes there is a difference between "sharing ZA" (sharing
the ZA matrix register with the caller) and "sharing PSTATE.ZA" (sharing
either the ZA or ZT0 register, both part of PSTATE.ZA with the caller).
---
clang/lib/CodeGen/CGBuiltin.cpp | 6 +-
clang/lib/CodeGen/CGCall.cpp | 16 +--
clang/lib/CodeGen/CodeGenModule.cpp | 2 +-
.../aarch64-sme-attrs.cpp | 18 +--
.../aarch64-sme-intrinsics/acle_sme_zero.c | 4 +-
clang/test/Modules/aarch64-sme-keywords.cppm | 10 +-
llvm/docs/AArch64SME.rst | 37 +++---
llvm/lib/IR/Verifier.cpp | 19 ++-
.../AArch64/AArch64TargetTransformInfo.cpp | 2 +-
llvm/lib/Target/AArch64/SMEABIPass.cpp | 9 +-
.../AArch64/Utils/AArch64SMEAttributes.cpp | 32 +++--
.../AArch64/Utils/AArch64SMEAttributes.h | 33 +++--
.../AArch64/sme-disable-gisel-fisel.ll | 10 +-
.../AArch64/sme-lazy-save-call-remarks.ll | 6 +-
.../CodeGen/AArch64/sme-lazy-save-call.ll | 8 +-
.../CodeGen/AArch64/sme-new-za-function.ll | 8 +-
.../AArch64/sme-shared-za-interface.ll | 4 +-
llvm/test/CodeGen/AArch64/sme-zt0-state.ll | 22 ++--
.../Inline/AArch64/sme-pstateza-attrs.ll | 22 ++--
llvm/test/Verifier/sme-attributes.ll | 32 ++++-
.../Target/AArch64/SMEAttributesTest.cpp | 116 ++++++++++++------
.../mlir/Dialect/ArmSME/Transforms/Passes.td | 35 ++++--
mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td | 4 +-
mlir/lib/Target/LLVMIR/ModuleImport.cpp | 21 ++--
mlir/lib/Target/LLVMIR/ModuleTranslation.cpp | 12 +-
mlir/test/Dialect/ArmSME/enable-arm-za.mlir | 16 ++-
.../LLVMIR/Import/function-attributes.ll | 26 ++--
mlir/test/Target/LLVMIR/llvmir.mlir | 24 +++-
28 files changed, 348 insertions(+), 206 deletions(-)
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 7ef764b8e1ac80e..ce90a36f5ac37fb 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -10676,10 +10676,8 @@ Value *CodeGenFunction::EmitAArch64BuiltinExpr(unsigned BuiltinID,
llvm::FunctionType::get(StructType::get(CGM.Int64Ty, CGM.Int64Ty), {},
false),
"__arm_sme_state"));
- auto Attrs =
- AttributeList()
- .addFnAttribute(getLLVMContext(), "aarch64_pstate_sm_compatible")
- .addFnAttribute(getLLVMContext(), "aarch64_pstate_za_preserved");
+ auto Attrs = AttributeList().addFnAttribute(getLLVMContext(),
+ "aarch64_pstate_sm_compatible");
CI->setAttributes(Attrs);
CI->setCallingConv(
llvm::CallingConv::
diff --git a/clang/lib/CodeGen/CGCall.cpp b/clang/lib/CodeGen/CGCall.cpp
index 28c211aa631e4d8..657666c9bda4ec4 100644
--- a/clang/lib/CodeGen/CGCall.cpp
+++ b/clang/lib/CodeGen/CGCall.cpp
@@ -1774,14 +1774,14 @@ static void AddAttributesFromFunctionProtoType(ASTContext &Ctx,
FuncAttrs.addAttribute("aarch64_pstate_sm_compatible");
// ZA
- if (FunctionType::getArmZAState(SMEBits) == FunctionType::ARM_Out ||
- FunctionType::getArmZAState(SMEBits) == FunctionType::ARM_InOut)
- FuncAttrs.addAttribute("aarch64_pstate_za_shared");
- if (FunctionType::getArmZAState(SMEBits) == FunctionType::ARM_Preserves ||
- FunctionType::getArmZAState(SMEBits) == FunctionType::ARM_In) {
- FuncAttrs.addAttribute("aarch64_pstate_za_shared");
- FuncAttrs.addAttribute("aarch64_pstate_za_preserved");
- }
+ if (FunctionType::getArmZAState(SMEBits) == FunctionType::ARM_Preserves)
+ FuncAttrs.addAttribute("aarch64_preserves_za");
+ if (FunctionType::getArmZAState(SMEBits) == FunctionType::ARM_In)
+ FuncAttrs.addAttribute("aarch64_in_za");
+ if (FunctionType::getArmZAState(SMEBits) == FunctionType::ARM_Out)
+ FuncAttrs.addAttribute("aarch64_out_za");
+ if (FunctionType::getArmZAState(SMEBits) == FunctionType::ARM_InOut)
+ FuncAttrs.addAttribute("aarch64_inout_za");
// ZT0
if (FunctionType::getArmZT0State(SMEBits) == FunctionType::ARM_Preserves)
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index 1280bcd36de9431..83160ae8b3ec4af 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -2414,7 +2414,7 @@ void CodeGenModule::SetLLVMFunctionAttributesForDefinition(const Decl *D,
if (auto *Attr = D->getAttr<ArmNewAttr>()) {
if (Attr->isNewZA())
- B.addAttribute("aarch64_pstate_za_new");
+ B.addAttribute("aarch64_new_za");
if (Attr->isNewZT0())
B.addAttribute("aarch64_new_zt0");
}
diff --git a/clang/test/CodeGen/aarch64-sme-intrinsics/aarch64-sme-attrs.cpp b/clang/test/CodeGen/aarch64-sme-intrinsics/aarch64-sme-attrs.cpp
index f69703a8a7d89be..fdd2de11365dd4a 100644
--- a/clang/test/CodeGen/aarch64-sme-intrinsics/aarch64-sme-attrs.cpp
+++ b/clang/test/CodeGen/aarch64-sme-intrinsics/aarch64-sme-attrs.cpp
@@ -284,20 +284,20 @@ int test_variadic_template() __arm_inout("za") {
// CHECK: attributes #[[SM_COMPATIBLE]] = { mustprogress noinline nounwind "aarch64_pstate_sm_compatible" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+bf16,+sme" }
// CHECK: attributes #[[SM_COMPATIBLE_DECL]] = { "aarch64_pstate_sm_compatible" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+bf16,+sme" }
// CHECK: attributes #[[SM_BODY]] = { mustprogress noinline nounwind "aarch64_pstate_sm_body" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+bf16,+sme" }
-// CHECK: attributes #[[ZA_SHARED]] = { mustprogress noinline nounwind "aarch64_pstate_za_shared" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+bf16,+sme" }
-// CHECK: attributes #[[ZA_SHARED_DECL]] = { "aarch64_pstate_za_shared" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+bf16,+sme" }
-// CHECK: attributes #[[ZA_PRESERVED]] = { mustprogress noinline nounwind "aarch64_pstate_za_preserved" "aarch64_pstate_za_shared" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+bf16,+sme" }
-// CHECK: attributes #[[ZA_PRESERVED_DECL]] = { "aarch64_pstate_za_preserved" "aarch64_pstate_za_shared" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+bf16,+sme" }
-// CHECK: attributes #[[ZA_NEW]] = { mustprogress noinline nounwind "aarch64_pstate_za_new" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+bf16,+sme" }
+// CHECK: attributes #[[ZA_SHARED]] = { mustprogress noinline nounwind "aarch64_inout_za" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+bf16,+sme" }
+// CHECK: attributes #[[ZA_SHARED_DECL]] = { "aarch64_inout_za" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+bf16,+sme" }
+// CHECK: attributes #[[ZA_PRESERVED]] = { mustprogress noinline nounwind "aarch64_preserves_za" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+bf16,+sme" }
+// CHECK: attributes #[[ZA_PRESERVED_DECL]] = { "aarch64_preserves_za" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+bf16,+sme" }
+// CHECK: attributes #[[ZA_NEW]] = { mustprogress noinline nounwind "aarch64_new_za" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+bf16,+sme" }
// CHECK: attributes #[[NORMAL_DEF]] = { mustprogress noinline nounwind "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+bf16,+sme" }
// CHECK: attributes #[[SM_ENABLED_CALL]] = { "aarch64_pstate_sm_enabled" }
// CHECK: attributes #[[SM_COMPATIBLE_CALL]] = { "aarch64_pstate_sm_compatible" }
// CHECK: attributes #[[SM_BODY_CALL]] = { "aarch64_pstate_sm_body" }
-// CHECK: attributes #[[ZA_SHARED_CALL]] = { "aarch64_pstate_za_shared" }
-// CHECK: attributes #[[ZA_PRESERVED_CALL]] = { "aarch64_pstate_za_preserved" "aarch64_pstate_za_shared" }
+// CHECK: attributes #[[ZA_SHARED_CALL]] = { "aarch64_inout_za" }
+// CHECK: attributes #[[ZA_PRESERVED_CALL]] = { "aarch64_preserves_za" }
// CHECK: attributes #[[NOUNWIND_CALL]] = { nounwind }
// CHECK: attributes #[[NOUNWIND_SM_ENABLED_CALL]] = { nounwind "aarch64_pstate_sm_enabled" }
// CHECK: attributes #[[NOUNWIND_SM_COMPATIBLE_CALL]] = { nounwind "aarch64_pstate_sm_compatible" }
-// CHECK: attributes #[[NOUNWIND_ZA_SHARED_CALL]] = { nounwind "aarch64_pstate_za_shared" }
-// CHECK: attributes #[[NOUNWIND_ZA_PRESERVED_CALL]] = { nounwind "aarch64_pstate_za_preserved" "aarch64_pstate_za_shared" }
+// CHECK: attributes #[[NOUNWIND_ZA_SHARED_CALL]] = { nounwind "aarch64_inout_za" }
+// CHECK: attributes #[[NOUNWIND_ZA_PRESERVED_CALL]] = { nounwind "aarch64_preserves_za" }
diff --git a/clang/test/CodeGen/aarch64-sme-intrinsics/acle_sme_zero.c b/clang/test/CodeGen/aarch64-sme-intrinsics/acle_sme_zero.c
index 7f56941108828a0..9963c0e48b8e7b3 100644
--- a/clang/test/CodeGen/aarch64-sme-intrinsics/acle_sme_zero.c
+++ b/clang/test/CodeGen/aarch64-sme-intrinsics/acle_sme_zero.c
@@ -55,13 +55,13 @@ void test_svzero_mask_za_2(void) __arm_inout("za") {
}
// CHECK-C-LABEL: define dso_local void @test_svzero_za(
-// CHECK-C-SAME: ) local_unnamed_addr #[[ATTR0]] {
+// CHECK-C-SAME: ) local_unnamed_addr #[[ATTR2:[0-9]+]] {
// CHECK-C-NEXT: entry:
// CHECK-C-NEXT: tail call void @llvm.aarch64.sme.zero(i32 255)
// CHECK-C-NEXT: ret void
//
// CHECK-CXX-LABEL: define dso_local void @_Z14test_svzero_zav(
-// CHECK-CXX-SAME: ) local_unnamed_addr #[[ATTR0]] {
+// CHECK-CXX-SAME: ) local_unnamed_addr #[[ATTR2:[0-9]+]] {
// CHECK-CXX-NEXT: entry:
// CHECK-CXX-NEXT: tail call void @llvm.aarch64.sme.zero(i32 255)
// CHECK-CXX-NEXT: ret void
diff --git a/clang/test/Modules/aarch64-sme-keywords.cppm b/clang/test/Modules/aarch64-sme-keywords.cppm
index df4dd32b16cff7c..759701a633cebed 100644
--- a/clang/test/Modules/aarch64-sme-keywords.cppm
+++ b/clang/test/Modules/aarch64-sme-keywords.cppm
@@ -43,14 +43,14 @@ import A;
//
// CHECK:declare void @_ZW1A22f_streaming_compatiblev() #[[STREAMING_COMPATIBLE_DECL:[0-9]+]]
//
-// CHECK-DAG: attributes #[[SHARED_ZA_DEF]] = {{{.*}} "aarch64_pstate_za_shared" {{.*}}}
-// CHECK-DAG: attributes #[[SHARED_ZA_DECL]] = {{{.*}} "aarch64_pstate_za_shared" {{.*}}}
-// CHECK-DAG: attributes #[[PRESERVES_ZA_DECL]] = {{{.*}} "aarch64_pstate_za_preserved" {{.*}}}
+// CHECK-DAG: attributes #[[SHARED_ZA_DEF]] = {{{.*}} "aarch64_inout_za" {{.*}}}
+// CHECK-DAG: attributes #[[SHARED_ZA_DECL]] = {{{.*}} "aarch64_inout_za" {{.*}}}
+// CHECK-DAG: attributes #[[PRESERVES_ZA_DECL]] = {{{.*}} "aarch64_preserves_za" {{.*}}}
// CHECK-DAG: attributes #[[NORMAL_DEF]] = {{{.*}}}
// CHECK-DAG: attributes #[[STREAMING_DECL]] = {{{.*}} "aarch64_pstate_sm_enabled" {{.*}}}
// CHECK-DAG: attributes #[[STREAMING_COMPATIBLE_DECL]] = {{{.*}} "aarch64_pstate_sm_compatible" {{.*}}}
-// CHECK-DAG: attributes #[[SHARED_ZA_USE]] = { "aarch64_pstate_za_shared" }
-// CHECK-DAG: attributes #[[PRESERVES_ZA_USE]] = { "aarch64_pstate_za_preserved" "aarch64_pstate_za_shared" }
+// CHECK-DAG: attributes #[[SHARED_ZA_USE]] = { "aarch64_inout_za" }
+// CHECK-DAG: attributes #[[PRESERVES_ZA_USE]] = { "aarch64_preserves_za" }
// CHECK-DAG: attributes #[[STREAMING_USE]] = { "aarch64_pstate_sm_enabled" }
// CHECK-DAG: attributes #[[STREAMING_COMPATIBLE_USE]] = { "aarch64_pstate_sm_compatible" }
diff --git a/llvm/docs/AArch64SME.rst b/llvm/docs/AArch64SME.rst
index 63573bf91eacb56..4b6fa5e10f880a9 100644
--- a/llvm/docs/AArch64SME.rst
+++ b/llvm/docs/AArch64SME.rst
@@ -22,26 +22,32 @@ Below we describe the LLVM IR attributes and their relation to the C/C++
level ACLE attributes:
``aarch64_pstate_sm_enabled``
- is used for functions with ``__attribute__((arm_streaming))``
+ is used for functions with ``__arm_streaming``
``aarch64_pstate_sm_compatible``
- is used for functions with ``__attribute__((arm_streaming_compatible))``
+ is used for functions with ``__arm_streaming_compatible``
``aarch64_pstate_sm_body``
- is used for functions with ``__attribute__((arm_locally_streaming))`` and is
+ is used for functions with ``__arm_locally_streaming`` and is
only valid on function definitions (not declarations)
-``aarch64_pstate_za_new``
- is used for functions with ``__attribute__((arm_new_za))``
+``aarch64_pstate_new_za``
+ is used for functions with ``__arm_new("za")``
-``aarch64_pstate_za_shared``
- is used for functions with ``__attribute__((arm_shared_za))``
+``aarch64_in_za``
+ is used for functions with ``__arm_in("za")``
-``aarch64_pstate_za_preserved``
- is used for functions with ``__attribute__((arm_preserves_za))``
+``aarch64_out_za``
+ is used for functions with ``__arm_out("za")``
+
+``aarch64_inout_za``
+ is used for functions with ``__arm_inout("za")``
+
+``aarch64_preserves_za``
+ is used for functions with ``__arm_preserves("za")``
``aarch64_expanded_pstate_za``
- is used for functions with ``__attribute__((arm_new_za))``
+ is used for functions with ``__arm_new_za``
Clang must ensure that the above attributes are added both to the
function's declaration/definition as well as to their call-sites. This is
@@ -89,11 +95,10 @@ Restrictions on attributes
* It is not allowed for a function to be decorated with both
``aarch64_pstate_sm_compatible`` and ``aarch64_pstate_sm_enabled``.
-* It is not allowed for a function to be decorated with both
- ``aarch64_pstate_za_new`` and ``aarch64_pstate_za_preserved``.
-
-* It is not allowed for a function to be decorated with both
- ``aarch64_pstate_za_new`` and ``aarch64_pstate_za_shared``.
+* It is not allowed for a function to be decorated with more than one of the
+ following attributes:
+ ``aarch64_new_za``, ``aarch64_in_za``, ``aarch64_out_za``, ``aarch64_inout_za``,
+ ``aarch64_preserves_za``.
These restrictions also apply in the higher level SME ACLE, which means we can
emit diagnostics in Clang to signal users about incorrect behaviour.
@@ -426,7 +431,7 @@ to toggle PSTATE.ZA using intrinsics. This also makes it simpler to setup a
lazy-save mechanism for calls to private-ZA functions (i.e. functions that may
either directly or indirectly clobber ZA state).
-For the purpose of handling functions marked with ``aarch64_pstate_za_new``,
+For the purpose of handling functions marked with ``aarch64_new_za``,
we have introduced a new LLVM IR pass (SMEABIPass) that is run just before
SelectionDAG. Any such functions dealt with by this pass are marked with
``aarch64_expanded_pstate_za``.
diff --git a/llvm/lib/IR/Verifier.cpp b/llvm/lib/IR/Verifier.cpp
index 91cf91fbc788bd9..53d923ced8d2e3b 100644
--- a/llvm/lib/IR/Verifier.cpp
+++ b/llvm/lib/IR/Verifier.cpp
@@ -2155,17 +2155,14 @@ void Verifier::verifyFunctionAttrs(FunctionType *FT, AttributeList Attrs,
V);
}
- if (Attrs.hasFnAttr("aarch64_pstate_za_new")) {
- Check(!Attrs.hasFnAttr("aarch64_pstate_za_preserved"),
- "Attributes 'aarch64_pstate_za_new and aarch64_pstate_za_preserved' "
- "are incompatible!",
- V);
-
- Check(!Attrs.hasFnAttr("aarch64_pstate_za_shared"),
- "Attributes 'aarch64_pstate_za_new and aarch64_pstate_za_shared' "
- "are incompatible!",
- V);
- }
+ Check(
+ (Attrs.hasFnAttr("aarch64_new_za") + Attrs.hasFnAttr("aarch64_in_za") +
+ Attrs.hasFnAttr("aarch64_inout_za") +
+ Attrs.hasFnAttr("aarch64_out_za") +
+ Attrs.hasFnAttr("aarch64_preserves_za")) <= 1,
+ "Attributes 'aarch64_new_za', 'aarch64_in_za', 'aarch64_out_za', "
+ "'aarch64_inout_za' and 'aarch64_preserves_za' are mutually exclusive",
+ V);
Check(
(Attrs.hasFnAttr("aarch64_new_zt0") + Attrs.hasFnAttr("aarch64_in_zt0") +
diff --git a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
index d611338fc268f90..fa65c8103697b1b 100644
--- a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
+++ b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
@@ -235,7 +235,7 @@ bool AArch64TTIImpl::areInlineCompatible(const Function *Caller,
const Function *Callee) const {
SMEAttrs CallerAttrs(*Caller);
SMEAttrs CalleeAttrs(*Callee);
- if (CalleeAttrs.hasNewZABody())
+ if (CalleeAttrs.isNewZA())
return false;
if (CallerAttrs.requiresLazySave(CalleeAttrs) ||
diff --git a/llvm/lib/Target/AArch64/SMEABIPass.cpp b/llvm/lib/Target/AArch64/SMEABIPass.cpp
index 0247488ce93f1df..bee5d63c5a749bf 100644
--- a/llvm/lib/Target/AArch64/SMEABIPass.cpp
+++ b/llvm/lib/Target/AArch64/SMEABIPass.cpp
@@ -62,8 +62,7 @@ void emitTPIDR2Save(Module *M, IRBuilder<> &Builder) {
FunctionType::get(Builder.getVoidTy(), {}, /*IsVarArgs=*/false);
auto Attrs =
AttributeList()
- .addFnAttribute(M->getContext(), "aarch64_pstate_sm_compatible")
- .addFnAttribute(M->getContext(), "aarch64_pstate_za_preserved");
+ .addFnAttribute(M->getContext(), "aarch64_pstate_sm_compatible");
FunctionCallee Callee =
M->getOrInsertFunction("__arm_tpidr2_save", TPIDR2SaveTy, Attrs);
CallInst *Call = Builder.CreateCall(Callee);
@@ -78,7 +77,7 @@ void emitTPIDR2Save(Module *M, IRBuilder<> &Builder) {
}
/// This function generates code at the beginning and end of a function marked
-/// with either `aarch64_pstate_za_new` or `aarch64_new_zt0`.
+/// with either `aarch64_new_za` or `aarch64_new_zt0`.
/// At the beginning of the function, the following code is generated:
/// - Commit lazy-save if active [Private-ZA Interface*]
/// - Enable PSTATE.ZA [Private-ZA Interface]
@@ -133,7 +132,7 @@ bool SMEABI::updateNewStateFunctions(Module *M, Function *F,
Builder.CreateCall(EnableZAIntr->getFunctionType(), EnableZAIntr);
}
- if (FnAttrs.hasNewZABody()) {
+ if (FnAttrs.isNewZA()) {
Function *ZeroIntr =
Intrinsic::getDeclaration(M, Intrinsic::aarch64_sme_zero);
Builder.CreateCall(ZeroIntr->getFunctionType(), ZeroIntr,
@@ -174,7 +173,7 @@ bool SMEABI::runOnFunction(Function &F) {
bool Changed = false;
SMEAttrs FnAttrs(F);
- if (FnAttrs.hasNewZABody() || FnAttrs.isNewZT0())
+ if (FnAttrs.isNewZA() || FnAttrs.isNewZT0())
Changed |= updateNewStateFunctions(M, &F, Builder, FnAttrs);
return Changed;
diff --git a/llvm/lib/Target/AArch64/Utils/AArch64SMEAttributes.cpp b/llvm/lib/Target/AArch64/Utils/AArch64SMEAttributes.cpp
index 3ee54e5df0a13df..ac07274a36c2313 100644
--- a/llvm/lib/Target/AArch64/Utils/AArch64SMEAttributes.cpp
+++ b/llvm/lib/Target/AArch64/Utils/AArch64SMEAttributes.cpp
@@ -23,13 +23,15 @@ void SMEAttrs::set(unsigned M, bool Enable) {
"SM_Enabled and SM_Compatible are mutually exclusive");
// ZA Attrs
- assert(!(hasNewZABody() && sharesZA()) &&
- "ZA_New and ZA_Shared are mutually exclusive");
- assert(!(hasNewZABody() && preservesZA()) &&
- "ZA_New and ZA_Preserved are mutually exclusive");
- assert(!(hasNewZABody() && (Bitmask & SME_ABI_Routine)) &&
+ assert(!(isNewZA() && (Bitmask & SME_ABI_Routine)) &&
"ZA_New and SME_ABI_Routine are mutually exclusive");
+ assert(
+ (!sharesZA() ||
+ (isNewZA() ^ isInZA() ^ isInOutZA() ^ isOutZA() ^ isPreservesZA())) &&
+ "Attributes 'aarch64_new_za', 'aarch64_in_za', 'aarch64_out_za', "
+ "'aarch64_inout_za' and 'aarch64_preserves_za' are mutually exclusive");
+
// ZT0 Attrs
assert(
(!sharesZT0() || (isNewZT0() ^ isInZT0() ^ isInOutZT0() ^ isOutZT0() ^
@@ -49,8 +51,8 @@ SMEAttrs::SMEAttrs(StringRef FuncName) : Bitmask(0) {
if (FuncName == "__arm_tpidr2_save" || FuncName == "__arm_sme_state")
Bitmask |= (SMEAttrs::SM_Compatible | SMEAttrs::SME_ABI_Routine);
if (FuncName == "__arm_tpidr2_restore")
- Bitmask |= (SMEAttrs::SM_Compatible | SMEAttrs::ZA_Shared |
- SMEAttrs::SME_ABI_Routine);
+ Bitmask |= SMEAttrs::SM_Compatible | encodeZAState(StateValue::In) |
+ SMEAttrs::SME_ABI_Routine;
}
SMEAttrs::SMEAttrs(const AttributeList &Attrs) {
@@ -61,12 +63,16 @@ SMEAttrs::SMEAttrs(const AttributeList &Attrs) {
Bitmask |= SM_Compatible;
if (Attrs.hasFnAttr("aarch64_pstate_sm_body"))
Bitmask |= SM_Body;
- if (Attrs.hasFnAttr("aarch64_pstate_za_shared"))
- Bitmask |= ZA_Shared;
- if (Attrs.hasFnAttr("aarch64_pstate_za_new"))
- Bitmask |= ZA_New;
- if (Attrs.hasFnAttr("aarch64_pstate_za_preserved"))
- Bitmask |= ZA_Preserved;
+ if (Attrs.hasFnAttr("aarch64_in_za"))
+ Bitmask |= encodeZAState(StateValue::In);
+ if (Attrs.hasFnAttr("aarch64_out_za"))
+ Bitmask |= encodeZAState(StateValue::Out);
+ if (Attrs.hasFnAttr("aarch64_inout_za"))
+ Bitmask |= encodeZAState(StateValue::InOut);
+ if (Attrs.hasFnAttr("aarch64_preserves_za"))
+ Bitmask |= encodeZAState(StateValue::Preserved);
+ if (Attrs.hasFnAttr("aarch64_new_za"))
+ Bitmask |= encodeZAState(StateValue::New);
if (Attrs.hasFnAttr("aarch64_in_zt0"))
Bitmask |= encodeZT0State(StateValue::In);
if (Attrs.hasFnAttr("aarch64_out_zt0"))
diff --git a/llvm/lib/Target/AArch64/Utils/AArch64SMEAttributes.h b/llvm/lib/Target/AArch64/Utils/AArch64SMEAttributes.h
index 27b7075a0944ffb..4c7c1c9b079538e 100644
--- a/llvm/lib/Target/AArch64/Utils/AArch64SMEAttributes.h
+++ b/llvm/lib/Target/AArch64/Utils/AArch64SMEAttributes.h
@@ -41,10 +41,9 @@ class SMEAttrs {
SM_Enabled = 1 << 0, // aarch64_pstate_sm_enabled
SM_Compatible = 1 << 1, // aarch64_pstate_sm_compatible
SM_Body = 1 << 2, // aarch64_pstate_sm_body
- ZA_Shared = 1 << 3, // aarch64_pstate_sm_shared
- ZA_New = 1 << 4, // aarch64_pstate_sm_new
- ZA_Preserved = 1 << 5, // aarch64_pstate_sm_preserved
- SME_ABI_Routine = 1 << 6, // Used for SME ABI routines to avoid lazy saves
+ SME_ABI_Routine = 1 << 3, // Used for SME ABI routines to avoid lazy saves
+ ZA_Shift = 4,
+ ZA_Mask = 0b111 << ZA_Shift,
ZT0_Shift = 7,
ZT0_Mask = 0b111 << ZT0_Shift
};
@@ -77,13 +76,29 @@ class SMEAttrs {
/// streaming mode.
bool requiresSMChange(const SMEAttrs &Callee) const;
- // Interfaces to query PSTATE.ZA
- bool hasNewZABody() const { return Bitmask & ZA_New; }
- bool sharesZA() const { return Bitmask & ZA_Shared; }
+ // Interfaces to query ZA
+ static StateValue decodeZAState(unsigned Bitmask) {
+ return static_cast<StateValue>((Bitmask & ZA_Mask) >> ZA_Shift);
+ }
+ static unsigned encodeZAState(StateValue S) {
+ return static_cast<unsigned>(S) << ZA_Shift;
+ }
+
+ bool isNewZA() const { return decodeZAState(Bitmask) == StateValue::New; }
+ bool isInZA() const { return decodeZAState(Bitmask) == StateValue::In; }
+ bool isOutZA() const { return decodeZAState(Bitmask) == StateValue::Out; }
+ bool isInOutZA() const { return decodeZAState(Bitmask) == StateValue::InOut; }
+ bool isPreservesZA() const {
+ return decodeZAState(Bitmask) == StateValue::Preserved;
+ }
+ bool sharesZA() const {
+ StateValue State = decodeZAState(Bitmask);
+ return State == StateValue::In || State == StateValue::Out ||
+ State == StateValue::InOut || State == StateValue::Preserved;
+ }
bool hasSharedZAInterface() const { return sharesZA() || sharesZT0(); }
bool hasPrivateZAInterface() const { return !hasSharedZAInterface(); }
- bool preservesZA() const { return Bitmask & ZA_Preserved; }
- bool hasZAState() const { return hasNewZABody() || sharesZA(); }
+ bool hasZAState() const { return isNewZA() || sharesZA(); }
bool requiresLazySave(const SMEAttrs &Callee) const {
return hasZAState() && Callee.hasPrivateZAInterface() &&
!(Callee.Bitmask & SME_ABI_Routine);
diff --git a/llvm/test/CodeGen/AArch64/sme-disable-gisel-fisel.ll b/llvm/test/CodeGen/AArch64/sme-disable-gisel-fisel.ll
index e18e18a1cfad186..6c6cbdb7a601d30 100644
--- a/llvm/test/CodeGen/AArch64/sme-disable-gisel-fisel.ll
+++ b/llvm/test/CodeGen/AArch64/sme-disable-gisel-fisel.ll
@@ -207,9 +207,9 @@ define void @normal_call_to_streaming_callee_ptr(ptr %p) nounwind noinline optno
; Check ZA state
;
-declare double @za_shared_callee(double) "aarch64_pstate_za_shared"
+declare double @za_shared_callee(double) "aarch64_inout_za"
-define double @za_new_caller_to_za_shared_callee(double %x) nounwind noinline optnone "aarch64_pstate_za_new"{
+define double @za_new_caller_to_za_shared_callee(double %x) nounwind noinline optnone "aarch64_new_za"{
; CHECK-COMMON-LABEL: za_new_caller_to_za_shared_callee:
; CHECK-COMMON: // %bb.0: // %prelude
; CHECK-COMMON-NEXT: stp x29, x30, [sp, #-16]! // 16-byte Folded Spill
@@ -246,7 +246,7 @@ entry:
ret double %add;
}
-define double @za_shared_caller_to_za_none_callee(double %x) nounwind noinline optnone "aarch64_pstate_za_shared"{
+define double @za_shared_caller_to_za_none_callee(double %x) nounwind noinline optnone "aarch64_inout_za"{
; CHECK-COMMON-LABEL: za_shared_caller_to_za_none_callee:
; CHECK-COMMON: // %bb.0: // %entry
; CHECK-COMMON-NEXT: stp x29, x30, [sp, #-16]! // 16-byte Folded Spill
@@ -286,7 +286,7 @@ entry:
}
; Ensure we set up and restore the lazy save correctly for instructions which are lowered to lib calls.
-define fp128 @f128_call_za(fp128 %a, fp128 %b) "aarch64_pstate_za_shared" nounwind {
+define fp128 @f128_call_za(fp128 %a, fp128 %b) "aarch64_inout_za" nounwind {
; CHECK-COMMON-LABEL: f128_call_za:
; CHECK-COMMON: // %bb.0:
; CHECK-COMMON-NEXT: stp x29, x30, [sp, #-16]! // 16-byte Folded Spill
@@ -348,7 +348,7 @@ define fp128 @f128_call_sm(fp128 %a, fp128 %b) "aarch64_pstate_sm_enabled" nounw
}
; As above this should use Selection DAG to make sure the libcall call is lowered correctly.
-define double @frem_call_za(double %a, double %b) "aarch64_pstate_za_shared" nounwind {
+define double @frem_call_za(double %a, double %b) "aarch64_inout_za" nounwind {
; CHECK-COMMON-LABEL: frem_call_za:
; CHECK-COMMON: // %bb.0:
; CHECK-COMMON-NEXT: stp x29, x30, [sp, #-16]! // 16-byte Folded Spill
diff --git a/llvm/test/CodeGen/AArch64/sme-lazy-save-call-remarks.ll b/llvm/test/CodeGen/AArch64/sme-lazy-save-call-remarks.ll
index d999311301f9438..65e50842d5d78fc 100644
--- a/llvm/test/CodeGen/AArch64/sme-lazy-save-call-remarks.ll
+++ b/llvm/test/CodeGen/AArch64/sme-lazy-save-call-remarks.ll
@@ -4,13 +4,13 @@
declare void @private_za_callee()
declare float @llvm.cos.f32(float)
-define void @test_lazy_save_1_callee() nounwind "aarch64_pstate_za_shared" {
+define void @test_lazy_save_1_callee() nounwind "aarch64_inout_za" {
; CHECK: remark: <unknown>:0:0: call from 'test_lazy_save_1_callee' to 'private_za_callee' sets up a lazy save for ZA
call void @private_za_callee()
ret void
}
-define void @test_lazy_save_2_callees() nounwind "aarch64_pstate_za_shared" {
+define void @test_lazy_save_2_callees() nounwind "aarch64_inout_za" {
; CHECK: remark: <unknown>:0:0: call from 'test_lazy_save_2_callees' to 'private_za_callee' sets up a lazy save for ZA
call void @private_za_callee()
; CHECK: remark: <unknown>:0:0: call from 'test_lazy_save_2_callees' to 'private_za_callee' sets up a lazy save for ZA
@@ -18,7 +18,7 @@ define void @test_lazy_save_2_callees() nounwind "aarch64_pstate_za_shared" {
ret void
}
-define float @test_lazy_save_expanded_intrinsic(float %a) nounwind "aarch64_pstate_za_shared" {
+define float @test_lazy_save_expanded_intrinsic(float %a) nounwind "aarch64_inout_za" {
; CHECK: remark: <unknown>:0:0: call from 'test_lazy_save_expanded_intrinsic' to 'cosf' sets up a lazy save for ZA
%res = call float @llvm.cos.f32(float %a)
ret float %res
diff --git a/llvm/test/CodeGen/AArch64/sme-lazy-save-call.ll b/llvm/test/CodeGen/AArch64/sme-lazy-save-call.ll
index 9625e139bd0bc5d..9d635f0b88f1915 100644
--- a/llvm/test/CodeGen/AArch64/sme-lazy-save-call.ll
+++ b/llvm/test/CodeGen/AArch64/sme-lazy-save-call.ll
@@ -5,7 +5,7 @@ declare void @private_za_callee()
declare float @llvm.cos.f32(float)
; Test lazy-save mechanism for a single callee.
-define void @test_lazy_save_1_callee() nounwind "aarch64_pstate_za_shared" {
+define void @test_lazy_save_1_callee() nounwind "aarch64_inout_za" {
; CHECK-LABEL: test_lazy_save_1_callee:
; CHECK: // %bb.0:
; CHECK-NEXT: stp x29, x30, [sp, #-16]! // 16-byte Folded Spill
@@ -38,7 +38,7 @@ define void @test_lazy_save_1_callee() nounwind "aarch64_pstate_za_shared" {
}
; Test lazy-save mechanism for multiple callees.
-define void @test_lazy_save_2_callees() nounwind "aarch64_pstate_za_shared" {
+define void @test_lazy_save_2_callees() nounwind "aarch64_inout_za" {
; CHECK-LABEL: test_lazy_save_2_callees:
; CHECK: // %bb.0:
; CHECK-NEXT: stp x29, x30, [sp, #-32]! // 16-byte Folded Spill
@@ -85,7 +85,7 @@ define void @test_lazy_save_2_callees() nounwind "aarch64_pstate_za_shared" {
}
; Test a call of an intrinsic that gets expanded to a library call.
-define float @test_lazy_save_expanded_intrinsic(float %a) nounwind "aarch64_pstate_za_shared" {
+define float @test_lazy_save_expanded_intrinsic(float %a) nounwind "aarch64_inout_za" {
; CHECK-LABEL: test_lazy_save_expanded_intrinsic:
; CHECK: // %bb.0:
; CHECK-NEXT: stp x29, x30, [sp, #-16]! // 16-byte Folded Spill
@@ -118,7 +118,7 @@ define float @test_lazy_save_expanded_intrinsic(float %a) nounwind "aarch64_psta
}
; Test a combination of streaming-compatible -> normal call with lazy-save.
-define void @test_lazy_save_and_conditional_smstart() nounwind "aarch64_pstate_za_shared" "aarch64_pstate_sm_compatible" {
+define void @test_lazy_save_and_conditional_smstart() nounwind "aarch64_inout_za" "aarch64_pstate_sm_compatible" {
; CHECK-LABEL: test_lazy_save_and_conditional_smstart:
; CHECK: // %bb.0:
; CHECK-NEXT: stp d15, d14, [sp, #-96]! // 16-byte Folded Spill
diff --git a/llvm/test/CodeGen/AArch64/sme-new-za-function.ll b/llvm/test/CodeGen/AArch64/sme-new-za-function.ll
index 0cee26dbb349edb..04d26902c536a41 100644
--- a/llvm/test/CodeGen/AArch64/sme-new-za-function.ll
+++ b/llvm/test/CodeGen/AArch64/sme-new-za-function.ll
@@ -1,9 +1,9 @@
; RUN: opt -S -mtriple=aarch64-linux-gnu -aarch64-sme-abi %s | FileCheck %s
; RUN: opt -S -mtriple=aarch64-linux-gnu -aarch64-sme-abi -aarch64-sme-abi %s | FileCheck %s
-declare void @shared_za_callee() "aarch64_pstate_za_shared"
+declare void @shared_za_callee() "aarch64_inout_za"
-define void @private_za() "aarch64_pstate_za_new" {
+define void @private_za() "aarch64_new_za" {
; CHECK-LABEL: @private_za(
; CHECK-NEXT: prelude:
; CHECK-NEXT: [[TPIDR2:%.*]] = call i64 @llvm.aarch64.sme.get.tpidr2()
@@ -24,7 +24,7 @@ define void @private_za() "aarch64_pstate_za_new" {
ret void
}
-define i32 @private_za_multiple_exit(i32 %a, i32 %b, i64 %cond) "aarch64_pstate_za_new" {
+define i32 @private_za_multiple_exit(i32 %a, i32 %b, i64 %cond) "aarch64_new_za" {
; CHECK-LABEL: @private_za_multiple_exit(
; CHECK-NEXT: prelude:
; CHECK-NEXT: [[TPIDR2:%.*]] = call i64 @llvm.aarch64.sme.get.tpidr2()
@@ -62,4 +62,4 @@ if.end:
}
; CHECK: declare void @__arm_tpidr2_save() #[[ATTR:[0-9]+]]
-; CHECK: attributes #[[ATTR]] = { "aarch64_pstate_sm_compatible" "aarch64_pstate_za_preserved" }
+; CHECK: attributes #[[ATTR]] = { "aarch64_pstate_sm_compatible" }
diff --git a/llvm/test/CodeGen/AArch64/sme-shared-za-interface.ll b/llvm/test/CodeGen/AArch64/sme-shared-za-interface.ll
index a2e20013d94ff14..cd7460b177c4bc3 100644
--- a/llvm/test/CodeGen/AArch64/sme-shared-za-interface.ll
+++ b/llvm/test/CodeGen/AArch64/sme-shared-za-interface.ll
@@ -4,7 +4,7 @@
declare void @private_za_callee()
; Ensure that we don't use tail call optimization when a lazy-save is required.
-define void @disable_tailcallopt() "aarch64_pstate_za_shared" nounwind {
+define void @disable_tailcallopt() "aarch64_inout_za" nounwind {
; CHECK-LABEL: disable_tailcallopt:
; CHECK: // %bb.0:
; CHECK-NEXT: stp x29, x30, [sp, #-16]! // 16-byte Folded Spill
@@ -37,7 +37,7 @@ define void @disable_tailcallopt() "aarch64_pstate_za_shared" nounwind {
}
; Ensure we set up and restore the lazy save correctly for instructions which are lowered to lib calls
-define fp128 @f128_call_za(fp128 %a, fp128 %b) "aarch64_pstate_za_shared" nounwind {
+define fp128 @f128_call_za(fp128 %a, fp128 %b) "aarch64_inout_za" nounwind {
; CHECK-LABEL: f128_call_za:
; CHECK: // %bb.0:
; CHECK-NEXT: stp x29, x30, [sp, #-16]! // 16-byte Folded Spill
diff --git a/llvm/test/CodeGen/AArch64/sme-zt0-state.ll b/llvm/test/CodeGen/AArch64/sme-zt0-state.ll
index 18d1e40bf4d0fd5..7f40b5e7e134460 100644
--- a/llvm/test/CodeGen/AArch64/sme-zt0-state.ll
+++ b/llvm/test/CodeGen/AArch64/sme-zt0-state.ll
@@ -30,7 +30,7 @@ define void @zt0_in_caller_no_state_callee() "aarch64_in_zt0" nounwind {
; Expect spill & fill of ZT0 around call
; Expect setup and restore lazy-save around call
; Expect smstart za after call
-define void @za_zt0_shared_caller_no_state_callee() "aarch64_pstate_za_shared" "aarch64_in_zt0" nounwind {
+define void @za_zt0_shared_caller_no_state_callee() "aarch64_inout_za" "aarch64_in_zt0" nounwind {
; CHECK-LABEL: za_zt0_shared_caller_no_state_callee:
; CHECK: // %bb.0:
; CHECK-NEXT: stp x29, x30, [sp, #-32]! // 16-byte Folded Spill
@@ -84,7 +84,7 @@ define void @zt0_shared_caller_zt0_shared_callee() "aarch64_in_zt0" nounwind {
}
; Expect spill & fill of ZT0 around call
-define void @za_zt0_shared_caller_za_shared_callee() "aarch64_pstate_za_shared" "aarch64_in_zt0" nounwind {
+define void @za_zt0_shared_caller_za_shared_callee() "aarch64_inout_za" "aarch64_in_zt0" nounwind {
; CHECK-LABEL: za_zt0_shared_caller_za_shared_callee:
; CHECK: // %bb.0:
; CHECK-NEXT: stp x29, x30, [sp, #-32]! // 16-byte Folded Spill
@@ -106,12 +106,12 @@ define void @za_zt0_shared_caller_za_shared_callee() "aarch64_pstate_za_shared"
; CHECK-NEXT: ldr x19, [sp, #16] // 8-byte Folded Reload
; CHECK-NEXT: ldp x29, x30, [sp], #32 // 16-byte Folded Reload
; CHECK-NEXT: ret
- call void @callee() "aarch64_pstate_za_shared";
+ call void @callee() "aarch64_inout_za";
ret void;
}
; Caller and callee have shared ZA & ZT0
-define void @za_zt0_shared_caller_za_zt0_shared_callee() "aarch64_pstate_za_shared" "aarch64_in_zt0" nounwind {
+define void @za_zt0_shared_caller_za_zt0_shared_callee() "aarch64_inout_za" "aarch64_in_zt0" nounwind {
; CHECK-LABEL: za_zt0_shared_caller_za_zt0_shared_callee:
; CHECK: // %bb.0:
; CHECK-NEXT: stp x29, x30, [sp, #-16]! // 16-byte Folded Spill
@@ -128,7 +128,7 @@ define void @za_zt0_shared_caller_za_zt0_shared_callee() "aarch64_pstate_za_shar
; CHECK-NEXT: mov sp, x29
; CHECK-NEXT: ldp x29, x30, [sp], #16 // 16-byte Folded Reload
; CHECK-NEXT: ret
- call void @callee() "aarch64_pstate_za_shared" "aarch64_in_zt0";
+ call void @callee() "aarch64_inout_za" "aarch64_in_zt0";
ret void;
}
@@ -189,7 +189,7 @@ define void @zt0_new_caller() "aarch64_new_zt0" nounwind {
; Expect commit of lazy-save if ZA is dormant
; Expect smstart ZA, clear ZA & clear ZT0
; Before return, expect smstop ZA
-define void @new_za_zt0_caller() "aarch64_pstate_za_new" "aarch64_new_zt0" nounwind {
+define void @new_za_zt0_caller() "aarch64_new_za" "aarch64_new_zt0" nounwind {
; CHECK-LABEL: new_za_zt0_caller:
; CHECK: // %bb.0: // %prelude
; CHECK-NEXT: stp x29, x30, [sp, #-16]! // 16-byte Folded Spill
@@ -219,12 +219,12 @@ define void @new_za_zt0_caller() "aarch64_pstate_za_new" "aarch64_new_zt0" nounw
; CHECK-NEXT: mov sp, x29
; CHECK-NEXT: ldp x29, x30, [sp], #16 // 16-byte Folded Reload
; CHECK-NEXT: ret
- call void @callee() "aarch64_pstate_za_shared" "aarch64_in_zt0";
+ call void @callee() "aarch64_inout_za" "aarch64_in_zt0";
ret void;
}
; Expect clear ZA on entry
-define void @new_za_shared_zt0_caller() "aarch64_pstate_za_new" "aarch64_in_zt0" nounwind {
+define void @new_za_shared_zt0_caller() "aarch64_new_za" "aarch64_in_zt0" nounwind {
; CHECK-LABEL: new_za_shared_zt0_caller:
; CHECK: // %bb.0:
; CHECK-NEXT: stp x29, x30, [sp, #-16]! // 16-byte Folded Spill
@@ -242,12 +242,12 @@ define void @new_za_shared_zt0_caller() "aarch64_pstate_za_new" "aarch64_in_zt0"
; CHECK-NEXT: mov sp, x29
; CHECK-NEXT: ldp x29, x30, [sp], #16 // 16-byte Folded Reload
; CHECK-NEXT: ret
- call void @callee() "aarch64_pstate_za_shared" "aarch64_in_zt0";
+ call void @callee() "aarch64_inout_za" "aarch64_in_zt0";
ret void;
}
; Expect clear ZT0 on entry
-define void @shared_za_new_zt0() "aarch64_pstate_za_shared" "aarch64_new_zt0" nounwind {
+define void @shared_za_new_zt0() "aarch64_inout_za" "aarch64_new_zt0" nounwind {
; CHECK-LABEL: shared_za_new_zt0:
; CHECK: // %bb.0:
; CHECK-NEXT: stp x29, x30, [sp, #-16]! // 16-byte Folded Spill
@@ -265,6 +265,6 @@ define void @shared_za_new_zt0() "aarch64_pstate_za_shared" "aarch64_new_zt0" no
; CHECK-NEXT: mov sp, x29
; CHECK-NEXT: ldp x29, x30, [sp], #16 // 16-byte Folded Reload
; CHECK-NEXT: ret
- call void @callee() "aarch64_pstate_za_shared" "aarch64_in_zt0";
+ call void @callee() "aarch64_inout_za" "aarch64_in_zt0";
ret void;
}
diff --git a/llvm/test/Transforms/Inline/AArch64/sme-pstateza-attrs.ll b/llvm/test/Transforms/Inline/AArch64/sme-pstateza-attrs.ll
index 7fca45b1e43f61b..816492768cc0f5a 100644
--- a/llvm/test/Transforms/Inline/AArch64/sme-pstateza-attrs.ll
+++ b/llvm/test/Transforms/Inline/AArch64/sme-pstateza-attrs.ll
@@ -22,7 +22,7 @@ entry:
ret void
}
-define void @shared_za_callee() "aarch64_pstate_za_shared" {
+define void @shared_za_callee() "aarch64_inout_za" {
; CHECK-LABEL: define void @shared_za_callee
; CHECK-SAME: () #[[ATTR1:[0-9]+]] {
; CHECK-NEXT: entry:
@@ -34,7 +34,7 @@ entry:
ret void
}
-define void @new_za_callee() "aarch64_pstate_za_new" {
+define void @new_za_callee() "aarch64_new_za" {
; CHECK-LABEL: define void @new_za_callee
; CHECK-SAME: () #[[ATTR2:[0-9]+]] {
; CHECK-NEXT: call void @inlined_body()
@@ -84,7 +84,7 @@ entry:
; [x] Z -> N
; [ ] Z -> S
; [ ] Z -> Z
-define void @new_za_caller_nonza_callee_inline() "aarch64_pstate_za_new" {
+define void @new_za_caller_nonza_callee_inline() "aarch64_new_za" {
; CHECK-LABEL: define void @new_za_caller_nonza_callee_inline
; CHECK-SAME: () #[[ATTR2]] {
; CHECK-NEXT: entry:
@@ -99,7 +99,7 @@ entry:
; [ ] Z -> N
; [x] Z -> S
; [ ] Z -> Z
-define void @new_za_caller_shared_za_callee_inline() "aarch64_pstate_za_new" {
+define void @new_za_caller_shared_za_callee_inline() "aarch64_new_za" {
; CHECK-LABEL: define void @new_za_caller_shared_za_callee_inline
; CHECK-SAME: () #[[ATTR2]] {
; CHECK-NEXT: entry:
@@ -114,7 +114,7 @@ entry:
; [ ] Z -> N
; [ ] Z -> S
; [x] Z -> Z
-define void @new_za_caller_new_za_callee_dont_inline() "aarch64_pstate_za_new" {
+define void @new_za_caller_new_za_callee_dont_inline() "aarch64_new_za" {
; CHECK-LABEL: define void @new_za_caller_new_za_callee_dont_inline
; CHECK-SAME: () #[[ATTR2]] {
; CHECK-NEXT: entry:
@@ -129,7 +129,7 @@ entry:
; [x] Z -> N
; [ ] Z -> S
; [ ] Z -> Z
-define void @shared_za_caller_nonza_callee_inline() "aarch64_pstate_za_shared" {
+define void @shared_za_caller_nonza_callee_inline() "aarch64_inout_za" {
; CHECK-LABEL: define void @shared_za_caller_nonza_callee_inline
; CHECK-SAME: () #[[ATTR1]] {
; CHECK-NEXT: entry:
@@ -144,7 +144,7 @@ entry:
; [ ] S -> N
; [x] S -> Z
; [ ] S -> S
-define void @shared_za_caller_new_za_callee_dont_inline() "aarch64_pstate_za_shared" {
+define void @shared_za_caller_new_za_callee_dont_inline() "aarch64_inout_za" {
; CHECK-LABEL: define void @shared_za_caller_new_za_callee_dont_inline
; CHECK-SAME: () #[[ATTR1]] {
; CHECK-NEXT: entry:
@@ -159,7 +159,7 @@ entry:
; [ ] S -> N
; [ ] S -> Z
; [x] S -> S
-define void @shared_za_caller_shared_za_callee_inline() "aarch64_pstate_za_shared" {
+define void @shared_za_caller_shared_za_callee_inline() "aarch64_inout_za" {
; CHECK-LABEL: define void @shared_za_caller_shared_za_callee_inline
; CHECK-SAME: () #[[ATTR1]] {
; CHECK-NEXT: entry:
@@ -181,7 +181,7 @@ define void @private_za_callee_call_za_disable() {
ret void
}
-define void @shared_za_caller_private_za_callee_call_za_disable() "aarch64_pstate_za_shared" {
+define void @shared_za_caller_private_za_callee_call_za_disable() "aarch64_inout_za" {
; CHECK-LABEL: define void @shared_za_caller_private_za_callee_call_za_disable
; CHECK-SAME: () #[[ATTR1]] {
; CHECK-NEXT: call void @private_za_callee_call_za_disable()
@@ -201,7 +201,7 @@ define void @private_za_callee_call_tpidr2_save() {
ret void
}
-define void @shared_za_caller_private_za_callee_call_tpidr2_save_dont_inline() "aarch64_pstate_za_shared" {
+define void @shared_za_caller_private_za_callee_call_tpidr2_save_dont_inline() "aarch64_inout_za" {
; CHECK-LABEL: define void @shared_za_caller_private_za_callee_call_tpidr2_save_dont_inline
; CHECK-SAME: () #[[ATTR1]] {
; CHECK-NEXT: call void @private_za_callee_call_tpidr2_save()
@@ -221,7 +221,7 @@ define void @private_za_callee_call_tpidr2_restore(ptr %ptr) {
ret void
}
-define void @shared_za_caller_private_za_callee_call_tpidr2_restore_dont_inline(ptr %ptr) "aarch64_pstate_za_shared" {
+define void @shared_za_caller_private_za_callee_call_tpidr2_restore_dont_inline(ptr %ptr) "aarch64_inout_za" {
; CHECK-LABEL: define void @shared_za_caller_private_za_callee_call_tpidr2_restore_dont_inline
; CHECK-SAME: (ptr [[PTR:%.*]]) #[[ATTR1]] {
; CHECK-NEXT: call void @private_za_callee_call_tpidr2_restore(ptr [[PTR]])
diff --git a/llvm/test/Verifier/sme-attributes.ll b/llvm/test/Verifier/sme-attributes.ll
index 2b949951dc1bb66..3d01613ebf2fe14 100644
--- a/llvm/test/Verifier/sme-attributes.ll
+++ b/llvm/test/Verifier/sme-attributes.ll
@@ -3,11 +3,35 @@
declare void @sm_attrs() "aarch64_pstate_sm_enabled" "aarch64_pstate_sm_compatible";
; CHECK: Attributes 'aarch64_pstate_sm_enabled and aarch64_pstate_sm_compatible' are incompatible!
-declare void @za_preserved() "aarch64_pstate_za_new" "aarch64_pstate_za_preserved";
-; CHECK: Attributes 'aarch64_pstate_za_new and aarch64_pstate_za_preserved' are incompatible!
+declare void @za_new_preserved() "aarch64_new_za" "aarch64_preserves_za";
+; CHECK: Attributes 'aarch64_new_za', 'aarch64_in_za', 'aarch64_out_za', 'aarch64_inout_za' and 'aarch64_preserves_za' are mutually exclusive
-declare void @za_shared() "aarch64_pstate_za_new" "aarch64_pstate_za_shared";
-; CHECK: Attributes 'aarch64_pstate_za_new and aarch64_pstate_za_shared' are incompatible!
+declare void @za_new_in() "aarch64_new_za" "aarch64_in_za";
+; CHECK: Attributes 'aarch64_new_za', 'aarch64_in_za', 'aarch64_out_za', 'aarch64_inout_za' and 'aarch64_preserves_za' are mutually exclusive
+
+declare void @za_new_inout() "aarch64_new_za" "aarch64_inout_za";
+; CHECK: Attributes 'aarch64_new_za', 'aarch64_in_za', 'aarch64_out_za', 'aarch64_inout_za' and 'aarch64_preserves_za' are mutually exclusive
+
+declare void @za_new_out() "aarch64_new_za" "aarch64_out_za";
+; CHECK: Attributes 'aarch64_new_za', 'aarch64_in_za', 'aarch64_out_za', 'aarch64_inout_za' and 'aarch64_preserves_za' are mutually exclusive
+
+declare void @za_preserved_in() "aarch64_preserves_za" "aarch64_in_za";
+; CHECK: Attributes 'aarch64_new_za', 'aarch64_in_za', 'aarch64_out_za', 'aarch64_inout_za' and 'aarch64_preserves_za' are mutually exclusive
+
+declare void @za_preserved_inout() "aarch64_preserves_za" "aarch64_inout_za";
+; CHECK: Attributes 'aarch64_new_za', 'aarch64_in_za', 'aarch64_out_za', 'aarch64_inout_za' and 'aarch64_preserves_za' are mutually exclusive
+
+declare void @za_preserved_out() "aarch64_preserves_za" "aarch64_out_za";
+; CHECK: Attributes 'aarch64_new_za', 'aarch64_in_za', 'aarch64_out_za', 'aarch64_inout_za' and 'aarch64_preserves_za' are mutually exclusive
+
+declare void @za_in_inout() "aarch64_in_za" "aarch64_inout_za";
+; CHECK: Attributes 'aarch64_new_za', 'aarch64_in_za', 'aarch64_out_za', 'aarch64_inout_za' and 'aarch64_preserves_za' are mutually exclusive
+
+declare void @za_in_out() "aarch64_in_za" "aarch64_out_za";
+; CHECK: Attributes 'aarch64_new_za', 'aarch64_in_za', 'aarch64_out_za', 'aarch64_inout_za' and 'aarch64_preserves_za' are mutually exclusive
+
+declare void @za_inout_out() "aarch64_inout_za" "aarch64_out_za";
+; CHECK: Attributes 'aarch64_new_za', 'aarch64_in_za', 'aarch64_out_za', 'aarch64_inout_za' and 'aarch64_preserves_za' are mutually exclusive
declare void @zt0_new_preserved() "aarch64_new_zt0" "aarch64_preserves_zt0";
; CHECK: Attributes 'aarch64_new_zt0', 'aarch64_in_zt0', 'aarch64_out_zt0', 'aarch64_inout_zt0' and 'aarch64_preserves_zt0' are mutually exclusive
diff --git a/llvm/unittests/Target/AArch64/SMEAttributesTest.cpp b/llvm/unittests/Target/AArch64/SMEAttributesTest.cpp
index 044de72449ec890..2c1c92dfa602a50 100644
--- a/llvm/unittests/Target/AArch64/SMEAttributesTest.cpp
+++ b/llvm/unittests/Target/AArch64/SMEAttributesTest.cpp
@@ -38,21 +38,22 @@ TEST(SMEAttributes, Constructors) {
->getFunction("foo"))
.hasStreamingCompatibleInterface());
- ASSERT_TRUE(SA(*parseIR("declare void @foo() \"aarch64_pstate_za_shared\"")
- ->getFunction("foo"))
- .sharesZA());
- ASSERT_TRUE(SA(*parseIR("declare void @foo() \"aarch64_pstate_za_shared\"")
+ ASSERT_TRUE(
+ SA(*parseIR("declare void @foo() \"aarch64_in_za\"")->getFunction("foo"))
+ .isInZA());
+ ASSERT_TRUE(SA(*parseIR("declare void @foo() \"aarch64_out_za\"")
->getFunction("foo"))
- .hasSharedZAInterface());
-
- ASSERT_TRUE(SA(*parseIR("declare void @foo() \"aarch64_pstate_za_new\"")
+ .isOutZA());
+ ASSERT_TRUE(SA(*parseIR("declare void @foo() \"aarch64_inout_za\"")
->getFunction("foo"))
- .hasNewZABody());
-
- ASSERT_TRUE(SA(*parseIR("declare void @foo() \"aarch64_pstate_za_preserved\"")
+ .isInOutZA());
+ ASSERT_TRUE(SA(*parseIR("declare void @foo() \"aarch64_preserves_za\"")
+ ->getFunction("foo"))
+ .isPreservesZA());
+ ASSERT_TRUE(SA(*parseIR("declare void @foo() \"aarch64_new_za\"")
->getFunction("foo"))
- .preservesZA());
+ .isNewZA());
ASSERT_TRUE(
SA(*parseIR("declare void @foo() \"aarch64_in_zt0\"")->getFunction("foo"))
@@ -73,10 +74,6 @@ TEST(SMEAttributes, Constructors) {
// Invalid combinations.
EXPECT_DEBUG_DEATH(SA(SA::SM_Enabled | SA::SM_Compatible),
"SM_Enabled and SM_Compatible are mutually exclusive");
- EXPECT_DEBUG_DEATH(SA(SA::ZA_New | SA::ZA_Shared),
- "ZA_New and ZA_Shared are mutually exclusive");
- EXPECT_DEBUG_DEATH(SA(SA::ZA_New | SA::ZA_Preserved),
- "ZA_New and ZA_Preserved are mutually exclusive");
// Test that the set() methods equally check validity.
EXPECT_DEBUG_DEATH(SA(SA::SM_Enabled).set(SA::SM_Compatible),
@@ -99,29 +96,69 @@ TEST(SMEAttributes, Basics) {
ASSERT_TRUE(SA(SA::SM_Compatible | SA::SM_Body).hasStreamingBody());
ASSERT_FALSE(SA(SA::SM_Compatible | SA::SM_Body).hasNonStreamingInterface());
- // Test PSTATE.ZA interfaces.
- ASSERT_FALSE(SA(SA::ZA_Shared).hasPrivateZAInterface());
- ASSERT_TRUE(SA(SA::ZA_Shared).hasSharedZAInterface());
- ASSERT_TRUE(SA(SA::ZA_Shared).sharesZA());
- ASSERT_TRUE(SA(SA::ZA_Shared).hasZAState());
- ASSERT_FALSE(SA(SA::ZA_Shared).preservesZA());
- ASSERT_TRUE(SA(SA::ZA_Shared | SA::ZA_Preserved).preservesZA());
- ASSERT_FALSE(SA(SA::ZA_Shared).sharesZT0());
- ASSERT_FALSE(SA(SA::ZA_Shared).hasZT0State());
-
- ASSERT_TRUE(SA(SA::ZA_New).hasPrivateZAInterface());
- ASSERT_FALSE(SA(SA::ZA_New).hasSharedZAInterface());
- ASSERT_TRUE(SA(SA::ZA_New).hasNewZABody());
- ASSERT_TRUE(SA(SA::ZA_New).hasZAState());
- ASSERT_FALSE(SA(SA::ZA_New).preservesZA());
- ASSERT_FALSE(SA(SA::ZA_New).sharesZT0());
- ASSERT_FALSE(SA(SA::ZA_New).hasZT0State());
-
- ASSERT_TRUE(SA(SA::Normal).hasPrivateZAInterface());
- ASSERT_FALSE(SA(SA::Normal).hasSharedZAInterface());
- ASSERT_FALSE(SA(SA::Normal).hasNewZABody());
+ // Test ZA State interfaces
+ SA ZA_In = SA(SA::encodeZAState(SA::StateValue::In));
+ ASSERT_TRUE(ZA_In.isInZA());
+ ASSERT_FALSE(ZA_In.isOutZA());
+ ASSERT_FALSE(ZA_In.isInOutZA());
+ ASSERT_FALSE(ZA_In.isPreservesZA());
+ ASSERT_FALSE(ZA_In.isNewZA());
+ ASSERT_TRUE(ZA_In.sharesZA());
+ ASSERT_TRUE(ZA_In.hasZAState());
+ ASSERT_TRUE(ZA_In.hasSharedZAInterface());
+ ASSERT_FALSE(ZA_In.hasPrivateZAInterface());
+
+ SA ZA_Out = SA(SA::encodeZAState(SA::StateValue::Out));
+ ASSERT_TRUE(ZA_Out.isOutZA());
+ ASSERT_FALSE(ZA_Out.isInZA());
+ ASSERT_FALSE(ZA_Out.isInOutZA());
+ ASSERT_FALSE(ZA_Out.isPreservesZA());
+ ASSERT_FALSE(ZA_Out.isNewZA());
+ ASSERT_TRUE(ZA_Out.sharesZA());
+ ASSERT_TRUE(ZA_Out.hasZAState());
+ ASSERT_TRUE(ZA_Out.hasSharedZAInterface());
+ ASSERT_FALSE(ZA_Out.hasPrivateZAInterface());
+
+ SA ZA_InOut = SA(SA::encodeZAState(SA::StateValue::InOut));
+ ASSERT_TRUE(ZA_InOut.isInOutZA());
+ ASSERT_FALSE(ZA_InOut.isInZA());
+ ASSERT_FALSE(ZA_InOut.isOutZA());
+ ASSERT_FALSE(ZA_InOut.isPreservesZA());
+ ASSERT_FALSE(ZA_InOut.isNewZA());
+ ASSERT_TRUE(ZA_InOut.sharesZA());
+ ASSERT_TRUE(ZA_InOut.hasZAState());
+ ASSERT_TRUE(ZA_InOut.hasSharedZAInterface());
+ ASSERT_FALSE(ZA_InOut.hasPrivateZAInterface());
+
+ SA ZA_Preserved = SA(SA::encodeZAState(SA::StateValue::Preserved));
+ ASSERT_TRUE(ZA_Preserved.isPreservesZA());
+ ASSERT_FALSE(ZA_Preserved.isInZA());
+ ASSERT_FALSE(ZA_Preserved.isOutZA());
+ ASSERT_FALSE(ZA_Preserved.isInOutZA());
+ ASSERT_FALSE(ZA_Preserved.isNewZA());
+ ASSERT_TRUE(ZA_Preserved.sharesZA());
+ ASSERT_TRUE(ZA_Preserved.hasZAState());
+ ASSERT_TRUE(ZA_Preserved.hasSharedZAInterface());
+ ASSERT_FALSE(ZA_Preserved.hasPrivateZAInterface());
+
+ SA ZA_New = SA(SA::encodeZAState(SA::StateValue::New));
+ ASSERT_TRUE(ZA_New.isNewZA());
+ ASSERT_FALSE(ZA_New.isInZA());
+ ASSERT_FALSE(ZA_New.isOutZA());
+ ASSERT_FALSE(ZA_New.isInOutZA());
+ ASSERT_FALSE(ZA_New.isPreservesZA());
+ ASSERT_FALSE(ZA_New.sharesZA());
+ ASSERT_TRUE(ZA_New.hasZAState());
+ ASSERT_FALSE(ZA_New.hasSharedZAInterface());
+ ASSERT_TRUE(ZA_New.hasPrivateZAInterface());
+
+ ASSERT_FALSE(SA(SA::Normal).isInZA());
+ ASSERT_FALSE(SA(SA::Normal).isOutZA());
+ ASSERT_FALSE(SA(SA::Normal).isInOutZA());
+ ASSERT_FALSE(SA(SA::Normal).isPreservesZA());
+ ASSERT_FALSE(SA(SA::Normal).isNewZA());
+ ASSERT_FALSE(SA(SA::Normal).sharesZA());
ASSERT_FALSE(SA(SA::Normal).hasZAState());
- ASSERT_FALSE(SA(SA::Normal).preservesZA());
// Test ZT0 State interfaces
SA ZT0_In = SA(SA::encodeZT0State(SA::StateValue::In));
@@ -245,9 +282,10 @@ TEST(SMEAttributes, Transitions) {
.requiresSMChange(SA(SA::SM_Compatible | SA::SM_Body)));
SA Private_ZA = SA(SA::Normal);
- SA ZA_Shared = SA(SA::ZA_Shared);
+ SA ZA_Shared = SA(SA::encodeZAState(SA::StateValue::In));
SA ZT0_Shared = SA(SA::encodeZT0State(SA::StateValue::In));
- SA ZA_ZT0_Shared = SA(SA::ZA_Shared | SA::encodeZT0State(SA::StateValue::In));
+ SA ZA_ZT0_Shared = SA(SA::encodeZT0State(SA::StateValue::In) |
+ SA::encodeZT0State(SA::StateValue::In));
// Shared ZA -> Private ZA Interface
ASSERT_FALSE(ZA_Shared.requiresDisablingZABeforeCall(Private_ZA));
diff --git a/mlir/include/mlir/Dialect/ArmSME/Transforms/Passes.td b/mlir/include/mlir/Dialect/ArmSME/Transforms/Passes.td
index 8d1ba6ed34e805b..c331b33c917b349 100644
--- a/mlir/include/mlir/Dialect/ArmSME/Transforms/Passes.td
+++ b/mlir/include/mlir/Dialect/ArmSME/Transforms/Passes.td
@@ -43,10 +43,16 @@ def ArmZaMode : I32EnumAttr<"ArmZaMode", "Armv9 ZA storage mode",
I32EnumAttrCase<"Disabled", 0, "disabled">,
// A function's ZA state is created on entry and destroyed on exit.
I32EnumAttrCase<"NewZA", 1, "arm_new_za">,
- // A function that preserves ZA state.
- I32EnumAttrCase<"PreservesZA", 2, "arm_preserves_za">,
- // A function that uses ZA state as input and/or output
- I32EnumAttrCase<"SharedZA", 3, "arm_shared_za">,
+ // A function with a Shared-ZA interfaces that takes ZA as input.
+ I32EnumAttrCase<"InZA", 2, "arm_in_za">,
+ // A function with a Shared-ZA interfaces that returns ZA as output.
+ I32EnumAttrCase<"OutZA", 3, "arm_out_za">,
+ // A function with a Shared-ZA interfaces that takes ZA as input and
+ // returns ZA as output.
+ I32EnumAttrCase<"InOutZA", 4, "arm_inout_za">,
+ // A function with a Shared-ZA interface that does not read ZA and
+ // returns with ZA unchanged.
+ I32EnumAttrCase<"PreservesZA", 5, "arm_preserves_za">,
]>{
let cppNamespace = "mlir::arm_sme";
let genSpecializedAttr = 0;
@@ -92,14 +98,23 @@ def EnableArmStreaming
"new-za",
"The function has ZA state. The ZA state is "
"created on entry and destroyed on exit."),
+ clEnumValN(mlir::arm_sme::ArmZaMode::InZA,
+ "in-za",
+ "The function uses ZA state. The ZA state may "
+ "be used for input."),
+ clEnumValN(mlir::arm_sme::ArmZaMode::OutZA,
+ "out-za",
+ "The function uses ZA state. The ZA state may "
+ "be used for output."),
+ clEnumValN(mlir::arm_sme::ArmZaMode::InOutZA,
+ "inout-za",
+ "The function uses ZA state. The ZA state may "
+ "be used for input and/or output."),
clEnumValN(mlir::arm_sme::ArmZaMode::PreservesZA,
"preserves-za",
- "The function preserves ZA state. The ZA state is "
- "saved on entry and restored on exit."),
- clEnumValN(mlir::arm_sme::ArmZaMode::SharedZA,
- "shared-za",
- "The function uses ZA state. The ZA state may "
- "be used for input and/or output.")
+ "The function shares ZA state. The ZA state may "
+ "not be used for input and/or output and the "
+ "function must return with ZA unchanged")
)}]>,
Option<"onlyIfRequiredByOps", "only-if-required-by-ops", "bool",
/*default=*/"false",
diff --git a/mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td b/mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
index 01d476f530b1c57..dbc446c3693349f 100644
--- a/mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
+++ b/mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
@@ -1420,8 +1420,10 @@ def LLVM_LLVMFuncOp : LLVM_Op<"func", [
OptionalAttr<UnitAttr>:$arm_locally_streaming,
OptionalAttr<UnitAttr>:$arm_streaming_compatible,
OptionalAttr<UnitAttr>:$arm_new_za,
+ OptionalAttr<UnitAttr>:$arm_in_za,
+ OptionalAttr<UnitAttr>:$arm_out_za,
+ OptionalAttr<UnitAttr>:$arm_inout_za,
OptionalAttr<UnitAttr>:$arm_preserves_za,
- OptionalAttr<UnitAttr>:$arm_shared_za,
OptionalAttr<StrAttr>:$section,
OptionalAttr<UnnamedAddr>:$unnamed_addr,
OptionalAttr<I64Attr>:$alignment,
diff --git a/mlir/lib/Target/LLVMIR/ModuleImport.cpp b/mlir/lib/Target/LLVMIR/ModuleImport.cpp
index 928d8077175ccf5..5339cb9148d09fb 100644
--- a/mlir/lib/Target/LLVMIR/ModuleImport.cpp
+++ b/mlir/lib/Target/LLVMIR/ModuleImport.cpp
@@ -1640,9 +1640,11 @@ static constexpr std::array ExplicitAttributes{
StringLiteral("aarch64_pstate_sm_enabled"),
StringLiteral("aarch64_pstate_sm_body"),
StringLiteral("aarch64_pstate_sm_compatible"),
- StringLiteral("aarch64_pstate_za_new"),
- StringLiteral("aarch64_pstate_za_preserved"),
- StringLiteral("aarch64_pstate_za_shared"),
+ StringLiteral("aarch64_new_za"),
+ StringLiteral("aarch64_preserves_za"),
+ StringLiteral("aarch64_in_za"),
+ StringLiteral("aarch64_out_za"),
+ StringLiteral("aarch64_inout_za"),
StringLiteral("vscale_range"),
StringLiteral("frame-pointer"),
StringLiteral("target-features"),
@@ -1717,12 +1719,15 @@ void ModuleImport::processFunctionAttributes(llvm::Function *func,
else if (func->hasFnAttribute("aarch64_pstate_sm_compatible"))
funcOp.setArmStreamingCompatible(true);
- if (func->hasFnAttribute("aarch64_pstate_za_new"))
+ if (func->hasFnAttribute("aarch64_new_za"))
funcOp.setArmNewZa(true);
- else if (func->hasFnAttribute("aarch64_pstate_za_shared"))
- funcOp.setArmSharedZa(true);
- // PreservedZA can be used with either NewZA or SharedZA.
- if (func->hasFnAttribute("aarch64_pstate_za_preserved"))
+ else if (func->hasFnAttribute("aarch64_in_za"))
+ funcOp.setArmInZa(true);
+ else if (func->hasFnAttribute("aarch64_out_za"))
+ funcOp.setArmOutZa(true);
+ else if (func->hasFnAttribute("aarch64_inout_za"))
+ funcOp.setArmInoutZa(true);
+ else if (func->hasFnAttribute("aarch64_preserves_za"))
funcOp.setArmPreservesZa(true);
llvm::Attribute attr = func->getFnAttribute(llvm::Attribute::VScaleRange);
diff --git a/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp b/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
index 1499a71c7c9a7ce..c01a9699a86527e 100644
--- a/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
+++ b/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
@@ -1098,11 +1098,15 @@ LogicalResult ModuleTranslation::convertOneFunction(LLVMFuncOp func) {
llvmFunc->addFnAttr("aarch64_pstate_sm_compatible");
if (func.getArmNewZa())
- llvmFunc->addFnAttr("aarch64_pstate_za_new");
- else if (func.getArmSharedZa())
- llvmFunc->addFnAttr("aarch64_pstate_za_shared");
+ llvmFunc->addFnAttr("aarch64_new_za");
+ else if (func.getArmInZa())
+ llvmFunc->addFnAttr("aarch64_in_za");
+ else if (func.getArmOutZa())
+ llvmFunc->addFnAttr("aarch64_out_za");
+ else if (func.getArmInoutZa())
+ llvmFunc->addFnAttr("aarch64_inout_za");
if (func.getArmPreservesZa())
- llvmFunc->addFnAttr("aarch64_pstate_za_preserved");
+ llvmFunc->addFnAttr("aarch64_preserves_za");
if (auto targetCpu = func.getTargetCpu())
llvmFunc->addFnAttr("target-cpu", *targetCpu);
diff --git a/mlir/test/Dialect/ArmSME/enable-arm-za.mlir b/mlir/test/Dialect/ArmSME/enable-arm-za.mlir
index 0aa00f75c3a5670..a20203d7e557967 100644
--- a/mlir/test/Dialect/ArmSME/enable-arm-za.mlir
+++ b/mlir/test/Dialect/ArmSME/enable-arm-za.mlir
@@ -1,6 +1,8 @@
// RUN: mlir-opt %s -enable-arm-streaming=za-mode=new-za -convert-arm-sme-to-llvm | FileCheck %s -check-prefix=ENABLE-ZA
// RUN: mlir-opt %s -enable-arm-streaming -convert-arm-sme-to-llvm | FileCheck %s -check-prefix=DISABLE-ZA
-// RUN: mlir-opt %s -enable-arm-streaming=za-mode=shared-za -convert-arm-sme-to-llvm | FileCheck %s -check-prefix=SHARED-ZA
+// RUN: mlir-opt %s -enable-arm-streaming=za-mode=in-za -convert-arm-sme-to-llvm | FileCheck %s -check-prefix=IN-ZA
+// RUN: mlir-opt %s -enable-arm-streaming=za-mode=out-za -convert-arm-sme-to-llvm | FileCheck %s -check-prefix=OUT-ZA
+// RUN: mlir-opt %s -enable-arm-streaming=za-mode=inout-za -convert-arm-sme-to-llvm | FileCheck %s -check-prefix=INOUT-ZA
// RUN: mlir-opt %s -enable-arm-streaming=za-mode=preserves-za -convert-arm-sme-to-llvm | FileCheck %s -check-prefix=PRESERVES-ZA
// RUN: mlir-opt %s -convert-arm-sme-to-llvm | FileCheck %s -check-prefix=NO-ARM-STREAMING
@@ -9,8 +11,12 @@ func.func private @declaration()
// ENABLE-ZA-LABEL: @arm_new_za
// ENABLE-ZA-SAME: attributes {arm_new_za, arm_streaming}
-// SHARED-ZA-LABEL: @arm_new_za
-// SHARED-ZA-SAME: attributes {arm_shared_za, arm_streaming}
+// IN-ZA-LABEL: @arm_new_za
+// IN-ZA-SAME: attributes {arm_in_za, arm_streaming}
+// OUT-ZA-LABEL: @arm_new_za
+// OUT-ZA-SAME: attributes {arm_out_za, arm_streaming}
+// INOUT-ZA-LABEL: @arm_new_za
+// INOUT-ZA-SAME: attributes {arm_inout_za, arm_streaming}
// PRESERVES-ZA-LABEL: @arm_new_za
// PRESERVES-ZA-SAME: attributes {arm_preserves_za, arm_streaming}
// DISABLE-ZA-LABEL: @arm_new_za
@@ -19,6 +25,8 @@ func.func private @declaration()
// NO-ARM-STREAMING-LABEL: @arm_new_za
// NO-ARM-STREAMING-NOT: arm_new_za
// NO-ARM-STREAMING-NOT: arm_streaming
-// NO-ARM-STREAMING-NOT: arm_shared_za
+// NO-ARM-STREAMING-NOT: arm_in_za
+// NO-ARM-STREAMING-NOT: arm_out_za
+// NO-ARM-STREAMING-NOT: arm_inout_za
// NO-ARM-STREAMING-NOT: arm_preserves_za
func.func @arm_new_za() { return }
diff --git a/mlir/test/Target/LLVMIR/Import/function-attributes.ll b/mlir/test/Target/LLVMIR/Import/function-attributes.ll
index af2ef9db96ae333..f49c3514b808f76 100644
--- a/mlir/test/Target/LLVMIR/Import/function-attributes.ll
+++ b/mlir/test/Target/LLVMIR/Import/function-attributes.ll
@@ -222,20 +222,32 @@ define void @streaming_compatible_func() "aarch64_pstate_sm_compatible" {
; CHECK-LABEL: @arm_new_za_func
; CHECK-SAME: attributes {arm_new_za}
-define void @arm_new_za_func() "aarch64_pstate_za_new" {
+define void @arm_new_za_func() "aarch64_new_za" {
ret void
}
-; CHECK-LABEL: @arm_preserves_za_func
-; CHECK-SAME: attributes {arm_preserves_za}
-define void @arm_preserves_za_func() "aarch64_pstate_za_preserved" {
+; CHECK-LABEL: @arm_in_za_func
+; CHECK-SAME: attributes {arm_in_za}
+define void @arm_in_za_func() "aarch64_in_za" {
+ ret void
+}
+
+; CHECK-LABEL: @arm_out_za_func
+; CHECK-SAME: attributes {arm_out_za}
+define void @arm_out_za_func() "aarch64_out_za" {
ret void
}
-; CHECK-LABEL: @arm_shared_za_func
-; CHECK-SAME: attributes {arm_shared_za}
-define void @arm_shared_za_func() "aarch64_pstate_za_shared" {
+; CHECK-LABEL: @arm_inout_za_func
+; CHECK-SAME: attributes {arm_inout_za}
+define void @arm_inout_za_func() "aarch64_inout_za" {
+ ret void
+}
+
+; CHECK-LABEL: @arm_preserves_za_func
+; CHECK-SAME: attributes {arm_preserves_za}
+define void @arm_preserves_za_func() "aarch64_preserves_za" {
ret void
}
diff --git a/mlir/test/Target/LLVMIR/llvmir.mlir b/mlir/test/Target/LLVMIR/llvmir.mlir
index 961c9484446845a..c38c7ea587d25b7 100644
--- a/mlir/test/Target/LLVMIR/llvmir.mlir
+++ b/mlir/test/Target/LLVMIR/llvmir.mlir
@@ -2335,21 +2335,35 @@ llvm.func @streaming_compatible_func() attributes {arm_streaming_compatible} {
llvm.func @new_za_func() attributes {arm_new_za} {
llvm.return
}
-// CHECK #[[ATTR]] = { "aarch64_pstate_za_new" }
+// CHECK #[[ATTR]] = { "aarch64_new_za" }
-// CHECK-LABEL: @shared_za_func
+// CHECK-LABEL: @in_za_func
// CHECK: #[[ATTR:[0-9]*]]
-llvm.func @shared_za_func() attributes {arm_shared_za } {
+llvm.func @in_za_func() attributes {arm_in_za } {
llvm.return
}
-// CHECK #[[ATTR]] = { "aarch64_pstate_za_shared" }
+// CHECK #[[ATTR]] = { "aarch64_in_za" }
+
+// CHECK-LABEL: @out_za_func
+// CHECK: #[[ATTR:[0-9]*]]
+llvm.func @out_za_func() attributes {arm_out_za } {
+ llvm.return
+}
+// CHECK #[[ATTR]] = { "aarch64_out_za" }
+
+// CHECK-LABEL: @inout_za_func
+// CHECK: #[[ATTR:[0-9]*]]
+llvm.func @inout_za_func() attributes {arm_inout_za } {
+ llvm.return
+}
+// CHECK #[[ATTR]] = { "aarch64_inout_za" }
// CHECK-LABEL: @preserves_za_func
// CHECK: #[[ATTR:[0-9]*]]
llvm.func @preserves_za_func() attributes {arm_preserves_za} {
llvm.return
}
-// CHECK #[[ATTR]] = { "aarch64_pstate_za_preserved" }
+// CHECK #[[ATTR]] = { "aarch64_preserves_za" }
// -----
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