llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-llvm-transforms
Author: Momchil Velikov (momchil-velikov)
<details>
<summary>Changes</summary>
* The FP8 scalar type (`__mfp8`) was described as a vector type
* The FP8 vector types were described/assumed to have
integer element type (the element type ought to be `__mfp8`),
* Add support for `m` type specifier (denoting `__mfp8`)
in `DecodeTypeFromStr` and create SVE builtin prototypes using
the specifier, instead of `int8_t`.
---
Patch is 51.57 KiB, truncated to 20.00 KiB below, full version:
https://github.com/llvm/llvm-project/pull/118969.diff
12 Files Affected:
- (modified) clang/include/clang/AST/Type.h (+5)
- (modified) clang/include/clang/Basic/AArch64SVEACLETypes.def (+18-6)
- (modified) clang/lib/AST/ASTContext.cpp (+30-7)
- (modified) clang/lib/AST/ItaniumMangle.cpp (+5)
- (modified) clang/lib/AST/Type.cpp (+1-3)
- (modified) clang/lib/CodeGen/CodeGenTypes.cpp (+10-3)
- (modified) clang/lib/CodeGen/Targets/AArch64.cpp (+49-26)
- (modified) clang/test/CodeGen/AArch64/pure-scalable-args.c (+19)
- (modified) clang/test/CodeGenCXX/aarch64-mangle-sve-vectors.cpp (+48-58)
- (modified) clang/utils/TableGen/SveEmitter.cpp (+2-2)
- (modified) llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp (+2-1)
- (added) llvm/test/CodeGen/AArch64/memset-scalable-size.ll (+56)
``````````diff
diff --git a/clang/include/clang/AST/Type.h b/clang/include/clang/AST/Type.h
index 6fd6c73a516f08..626cfea56a47db 100644
--- a/clang/include/clang/AST/Type.h
+++ b/clang/include/clang/AST/Type.h
@@ -2518,6 +2518,7 @@ class alignas(TypeAlignment) Type : public
ExtQualsTypeCommonBase {
bool isFloat32Type() const;
bool isDoubleType() const;
bool isBFloat16Type() const;
+ bool isMFloat8Type() const;
bool isFloat128Type() const;
bool isIbm128Type() const;
bool isRealType() const; // C99 6.2.5p17 (real floating + integer)
@@ -8532,6 +8533,10 @@ inline bool Type::isBFloat16Type() const {
return isSpecificBuiltinType(BuiltinType::BFloat16);
}
+inline bool Type::isMFloat8Type() const {
+ return isSpecificBuiltinType(BuiltinType::MFloat8);
+}
+
inline bool Type::isFloat128Type() const {
return isSpecificBuiltinType(BuiltinType::Float128);
}
diff --git a/clang/include/clang/Basic/AArch64SVEACLETypes.def
b/clang/include/clang/Basic/AArch64SVEACLETypes.def
index 063cac1f4a58ee..6b704b386536c9 100644
--- a/clang/include/clang/Basic/AArch64SVEACLETypes.def
+++ b/clang/include/clang/Basic/AArch64SVEACLETypes.def
@@ -57,6 +57,11 @@
// - IsBF true for vector of brain float elements.
//===----------------------------------------------------------------------===//
+#ifndef SVE_SCALAR_TYPE
+#define SVE_SCALAR_TYPE(Name, MangledName, Id, SingletonId, Bits) \
+ SVE_TYPE(Name, Id, SingletonId)
+#endif
+
#ifndef SVE_VECTOR_TYPE
#define SVE_VECTOR_TYPE(Name, MangledName, Id, SingletonId) \
SVE_TYPE(Name, Id, SingletonId)
@@ -72,6 +77,11 @@
SVE_VECTOR_TYPE_DETAILS(Name, MangledName, Id, SingletonId, NumEls, ElBits,
NF, false, false, true)
#endif
+#ifndef SVE_VECTOR_TYPE_MFLOAT
+#define SVE_VECTOR_TYPE_MFLOAT(Name, MangledName, Id, SingletonId, NumEls,
ElBits, NF) \
+ SVE_VECTOR_TYPE_DETAILS(Name, MangledName, Id, SingletonId, NumEls, ElBits,
NF, false, false, false)
+#endif
+
#ifndef SVE_VECTOR_TYPE_FLOAT
#define SVE_VECTOR_TYPE_FLOAT(Name, MangledName, Id, SingletonId, NumEls,
ElBits, NF) \
SVE_VECTOR_TYPE_DETAILS(Name, MangledName, Id, SingletonId, NumEls, ElBits,
NF, false, true, false)
@@ -125,8 +135,7 @@ SVE_VECTOR_TYPE_FLOAT("__SVFloat64_t", "__SVFloat64_t",
SveFloat64, SveFloat64Ty
SVE_VECTOR_TYPE_BFLOAT("__SVBfloat16_t", "__SVBfloat16_t", SveBFloat16,
SveBFloat16Ty, 8, 16, 1)
-// This is a 8 bits opaque type.
-SVE_VECTOR_TYPE_INT("__SVMfloat8_t", "__SVMfloat8_t", SveMFloat8,
SveMFloat8Ty, 16, 8, 1, false)
+SVE_VECTOR_TYPE_MFLOAT("__SVMfloat8_t", "__SVMfloat8_t", SveMFloat8,
SveMFloat8Ty, 16, 8, 1)
//
// x2
@@ -148,7 +157,7 @@ SVE_VECTOR_TYPE_FLOAT("__clang_svfloat64x2_t",
"svfloat64x2_t", SveFloat64x2, Sv
SVE_VECTOR_TYPE_BFLOAT("__clang_svbfloat16x2_t", "svbfloat16x2_t",
SveBFloat16x2, SveBFloat16x2Ty, 8, 16, 2)
-SVE_VECTOR_TYPE_INT("__clang_svmfloat8x2_t", "svmfloat8x2_t", SveMFloat8x2,
SveMFloat8x2Ty, 16, 8, 2, false)
+SVE_VECTOR_TYPE_MFLOAT("__clang_svmfloat8x2_t", "svmfloat8x2_t", SveMFloat8x2,
SveMFloat8x2Ty, 16, 8, 2)
//
// x3
@@ -170,7 +179,7 @@ SVE_VECTOR_TYPE_FLOAT("__clang_svfloat64x3_t",
"svfloat64x3_t", SveFloat64x3, Sv
SVE_VECTOR_TYPE_BFLOAT("__clang_svbfloat16x3_t", "svbfloat16x3_t",
SveBFloat16x3, SveBFloat16x3Ty, 8, 16, 3)
-SVE_VECTOR_TYPE_INT("__clang_svmfloat8x3_t", "svmfloat8x3_t", SveMFloat8x3,
SveMFloat8x3Ty, 16, 8, 3, false)
+SVE_VECTOR_TYPE_MFLOAT("__clang_svmfloat8x3_t", "svmfloat8x3_t", SveMFloat8x3,
SveMFloat8x3Ty, 16, 8, 3)
//
// x4
@@ -192,7 +201,7 @@ SVE_VECTOR_TYPE_FLOAT("__clang_svfloat64x4_t",
"svfloat64x4_t", SveFloat64x4, Sv
SVE_VECTOR_TYPE_BFLOAT("__clang_svbfloat16x4_t", "svbfloat16x4_t",
SveBFloat16x4, SveBFloat16x4Ty, 8, 16, 4)
-SVE_VECTOR_TYPE_INT("__clang_svmfloat8x4_t", "svmfloat8x4_t", SveMFloat8x4,
SveMFloat8x4Ty, 16, 8, 4, false)
+SVE_VECTOR_TYPE_MFLOAT("__clang_svmfloat8x4_t", "svmfloat8x4_t", SveMFloat8x4,
SveMFloat8x4Ty, 16, 8, 4)
SVE_PREDICATE_TYPE_ALL("__SVBool_t", "__SVBool_t", SveBool, SveBoolTy, 16, 1)
SVE_PREDICATE_TYPE_ALL("__clang_svboolx2_t", "svboolx2_t", SveBoolx2,
SveBoolx2Ty, 16, 2)
@@ -200,11 +209,13 @@ SVE_PREDICATE_TYPE_ALL("__clang_svboolx4_t",
"svboolx4_t", SveBoolx4, SveBoolx4T
SVE_OPAQUE_TYPE("__SVCount_t", "__SVCount_t", SveCount, SveCountTy)
-AARCH64_VECTOR_TYPE_MFLOAT("__mfp8", "__mfp8", MFloat8, MFloat8Ty, 1, 8, 1)
+SVE_SCALAR_TYPE("__mfp8", "__mfp8", MFloat8, MFloat8Ty, 8)
+
AARCH64_VECTOR_TYPE_MFLOAT("__MFloat8x8_t", "__MFloat8x8_t", MFloat8x8,
MFloat8x8Ty, 8, 8, 1)
AARCH64_VECTOR_TYPE_MFLOAT("__MFloat8x16_t", "__MFloat8x16_t", MFloat8x16,
MFloat8x16Ty, 16, 8, 1)
#undef SVE_VECTOR_TYPE
+#undef SVE_VECTOR_TYPE_MFLOAT
#undef SVE_VECTOR_TYPE_BFLOAT
#undef SVE_VECTOR_TYPE_FLOAT
#undef SVE_VECTOR_TYPE_INT
@@ -213,4 +224,5 @@ AARCH64_VECTOR_TYPE_MFLOAT("__MFloat8x16_t",
"__MFloat8x16_t", MFloat8x16, MFloa
#undef SVE_OPAQUE_TYPE
#undef AARCH64_VECTOR_TYPE_MFLOAT
#undef AARCH64_VECTOR_TYPE
+#undef SVE_SCALAR_TYPE
#undef SVE_TYPE
diff --git a/clang/lib/AST/ASTContext.cpp b/clang/lib/AST/ASTContext.cpp
index 80e8c5b9df58e7..f1dbc3b9233929 100644
--- a/clang/lib/AST/ASTContext.cpp
+++ b/clang/lib/AST/ASTContext.cpp
@@ -2254,6 +2254,11 @@ TypeInfo ASTContext::getTypeInfoImpl(const Type *T)
const {
Width = NumEls * ElBits * NF;
\
Align = NumEls * ElBits;
\
break;
+#define SVE_SCALAR_TYPE(Name, MangledName, Id, SingletonId, Bits)
\
+ case BuiltinType::Id:
\
+ Width = Bits;
\
+ Align = Bits;
\
+ break;
#include "clang/Basic/AArch64SVEACLETypes.def"
#define PPC_VECTOR_TYPE(Name, Id, Size)
\
case BuiltinType::Id:
\
@@ -4374,15 +4379,18 @@ ASTContext::getBuiltinVectorTypeInfo(const BuiltinType
*Ty) const {
ElBits, NF)
\
case BuiltinType::Id:
\
return {BFloat16Ty, llvm::ElementCount::getScalable(NumEls), NF};
+#define SVE_VECTOR_TYPE_MFLOAT(Name, MangledName, Id, SingletonId, NumEls,
\
+ ElBits, NF)
\
+ case BuiltinType::Id:
\
+ return {MFloat8Ty, llvm::ElementCount::getScalable(NumEls), NF};
#define SVE_PREDICATE_TYPE_ALL(Name, MangledName, Id, SingletonId, NumEls, NF)
\
case BuiltinType::Id:
\
return {BoolTy, llvm::ElementCount::getScalable(NumEls), NF};
#define AARCH64_VECTOR_TYPE_MFLOAT(Name, MangledName, Id, SingletonId, NumEls,
\
ElBits, NF)
\
case BuiltinType::Id:
\
- return {getIntTypeForBitwidth(ElBits, false),
\
- llvm::ElementCount::getFixed(NumEls), NF};
-#define SVE_OPAQUE_TYPE(Name, MangledName, Id, SingletonId)
+ return {MFloat8Ty, llvm::ElementCount::getFixed(NumEls), NF};
+#define SVE_TYPE(Name, Id, SingletonId)
#include "clang/Basic/AArch64SVEACLETypes.def"
#define RVV_VECTOR_TYPE_INT(Name, Id, SingletonId, NumEls, ElBits, NF,
\
@@ -4444,11 +4452,16 @@ QualType ASTContext::getScalableVectorType(QualType
EltTy, unsigned NumElts,
EltTySize == ElBits && NumElts == (NumEls * NF) && NumFields == 1) {
\
return SingletonId;
\
}
+#define SVE_VECTOR_TYPE_MFLOAT(Name, MangledName, Id, SingletonId, NumEls,
\
+ ElBits, NF)
\
+ if (EltTy->isMFloat8Type() && EltTySize == ElBits &&
\
+ NumElts == (NumEls * NF) && NumFields == 1) {
\
+ return SingletonId;
\
+ }
#define SVE_PREDICATE_TYPE_ALL(Name, MangledName, Id, SingletonId, NumEls, NF)
\
if (EltTy->isBooleanType() && NumElts == (NumEls * NF) && NumFields == 1)
\
return SingletonId;
-#define SVE_OPAQUE_TYPE(Name, MangledName, Id, SingletonId)
-#define AARCH64_VECTOR_TYPE(Name, MangledName, Id, SingletonId)
+#define SVE_TYPE(Name, Id, SingletonId)
#include "clang/Basic/AArch64SVEACLETypes.def"
} else if (Target->hasRISCVVTypes()) {
uint64_t EltTySize = getTypeSize(EltTy);
@@ -12153,8 +12166,15 @@ static QualType DecodeTypeFromStr(const char *&Str,
const ASTContext &Context,
RequiresICE, false);
assert(!RequiresICE && "Can't require vector ICE");
- // TODO: No way to make AltiVec vectors in builtins yet.
- Type = Context.getVectorType(ElementType, NumElements,
VectorKind::Generic);
+ if (ElementType == Context.MFloat8Ty) {
+ assert((NumElements == 8 || NumElements == 16) &&
+ "Invalid number of elements");
+ Type = NumElements == 8 ? Context.MFloat8x8Ty : Context.MFloat8x16Ty;
+ } else {
+ // TODO: No way to make AltiVec vectors in builtins yet.
+ Type =
+ Context.getVectorType(ElementType, NumElements, VectorKind::Generic);
+ }
break;
}
case 'E': {
@@ -12210,6 +12230,9 @@ static QualType DecodeTypeFromStr(const char *&Str,
const ASTContext &Context,
case 'p':
Type = Context.getProcessIDType();
break;
+ case 'm':
+ Type = Context.MFloat8Ty;
+ break;
}
// If there are modifiers and if we're allowed to parse them, go for it.
diff --git a/clang/lib/AST/ItaniumMangle.cpp b/clang/lib/AST/ItaniumMangle.cpp
index 47aa9b40dab845..9404f9fd9b151d 100644
--- a/clang/lib/AST/ItaniumMangle.cpp
+++ b/clang/lib/AST/ItaniumMangle.cpp
@@ -3438,6 +3438,11 @@ void CXXNameMangler::mangleType(const BuiltinType *T) {
type_name = MangledName;
\
Out << (type_name == Name ? "u" : "") << type_name.size() << type_name;
\
break;
+#define SVE_SCALAR_TYPE(Name, MangledName, Id, SingletonId, Bits)
\
+ case BuiltinType::Id:
\
+ type_name = MangledName;
\
+ Out << (type_name == Name ? "u" : "") << type_name.size() << type_name;
\
+ break;
#include "clang/Basic/AArch64SVEACLETypes.def"
#define PPC_VECTOR_TYPE(Name, Id, Size)
\
case BuiltinType::Id:
\
diff --git a/clang/lib/AST/Type.cpp b/clang/lib/AST/Type.cpp
index 976361d07b68bf..dc9df9524457c2 100644
--- a/clang/lib/AST/Type.cpp
+++ b/clang/lib/AST/Type.cpp
@@ -2527,9 +2527,7 @@ bool Type::isSVESizelessBuiltinType() const {
#define SVE_PREDICATE_TYPE(Name, MangledName, Id, SingletonId)
\
case BuiltinType::Id:
\
return true;
-#define AARCH64_VECTOR_TYPE(Name, MangledName, Id, SingletonId)
\
- case BuiltinType::Id:
\
- return false;
+#define SVE_TYPE(Name, Id, SingletonId)
#include "clang/Basic/AArch64SVEACLETypes.def"
default:
return false;
diff --git a/clang/lib/CodeGen/CodeGenTypes.cpp
b/clang/lib/CodeGen/CodeGenTypes.cpp
index 09191a4901f493..fd3327cf9acd89 100644
--- a/clang/lib/CodeGen/CodeGenTypes.cpp
+++ b/clang/lib/CodeGen/CodeGenTypes.cpp
@@ -507,13 +507,15 @@ llvm::Type *CodeGenTypes::ConvertType(QualType T) {
case BuiltinType::Id:
#define AARCH64_VECTOR_TYPE(Name, MangledName, Id, SingletonId)
\
case BuiltinType::Id:
-#define SVE_OPAQUE_TYPE(Name, MangledName, Id, SingletonId)
+#define SVE_TYPE(Name, Id, SingletonId)
#include "clang/Basic/AArch64SVEACLETypes.def"
{
ASTContext::BuiltinVectorTypeInfo Info =
Context.getBuiltinVectorTypeInfo(cast<BuiltinType>(Ty));
- auto VTy =
- llvm::VectorType::get(ConvertType(Info.ElementType), Info.EC);
+ auto *EltTy = Info.ElementType->isMFloat8Type()
+ ? llvm::Type::getInt8Ty(getLLVMContext())
+ : ConvertType(Info.ElementType);
+ auto *VTy = llvm::VectorType::get(EltTy, Info.EC);
switch (Info.NumVectors) {
default:
llvm_unreachable("Expected 1, 2, 3 or 4 vectors!");
@@ -529,6 +531,9 @@ llvm::Type *CodeGenTypes::ConvertType(QualType T) {
}
case BuiltinType::SveCount:
return llvm::TargetExtType::get(getLLVMContext(), "aarch64.svcount");
+ case BuiltinType::MFloat8:
+ return llvm::VectorType::get(llvm::Type::getInt8Ty(getLLVMContext()), 1,
+ false);
#define PPC_VECTOR_TYPE(Name, Id, Size) \
case BuiltinType::Id: \
ResultType = \
@@ -650,6 +655,8 @@ llvm::Type *CodeGenTypes::ConvertType(QualType T) {
// An ext_vector_type of Bool is really a vector of bits.
llvm::Type *IRElemTy = VT->isExtVectorBoolType()
? llvm::Type::getInt1Ty(getLLVMContext())
+ : VT->getElementType()->isMFloat8Type()
+ ? llvm::Type::getInt8Ty(getLLVMContext())
: ConvertType(VT->getElementType());
ResultType = llvm::FixedVectorType::get(IRElemTy, VT->getNumElements());
break;
diff --git a/clang/lib/CodeGen/Targets/AArch64.cpp
b/clang/lib/CodeGen/Targets/AArch64.cpp
index be33e26f047841..9e714d7e64df86 100644
--- a/clang/lib/CodeGen/Targets/AArch64.cpp
+++ b/clang/lib/CodeGen/Targets/AArch64.cpp
@@ -52,6 +52,7 @@ class AArch64ABIInfo : public ABIInfo {
bool isIllegalVectorType(QualType Ty) const;
+ bool passAsAggregateType(QualType Ty) const;
bool passAsPureScalableType(QualType Ty, unsigned &NV, unsigned &NP,
SmallVectorImpl<llvm::Type *> &CoerceToSeq)
const;
@@ -243,6 +244,7 @@ AArch64ABIInfo::convertFixedToScalableVectorType(const
VectorType *VT) const {
case BuiltinType::SChar:
case BuiltinType::UChar:
+ case BuiltinType::MFloat8:
return llvm::ScalableVectorType::get(
llvm::Type::getInt8Ty(getVMContext()), 16);
@@ -337,6 +339,10 @@ ABIArgInfo
AArch64ABIInfo::coerceAndExpandPureScalableAggregate(
NSRN += NVec;
NPRN += NPred;
+ // Handle SVE vector tuples.
+ if (Ty->isSVESizelessBuiltinType())
+ return ABIArgInfo::getDirect();
+
llvm::Type *UnpaddedCoerceToType =
UnpaddedCoerceToSeq.size() == 1
? UnpaddedCoerceToSeq[0]
@@ -362,7 +368,7 @@ ABIArgInfo AArch64ABIInfo::classifyArgumentType(QualType
Ty, bool IsVariadicFn,
if (isIllegalVectorType(Ty))
return coerceIllegalVector(Ty, NSRN, NPRN);
- if (!isAggregateTypeForABI(Ty)) {
+ if (!passAsAggregateType(Ty)) {
// Treat an enum type as its underlying type.
if (const EnumType *EnumTy = Ty->getAs<EnumType>())
Ty = EnumTy->getDecl()->getIntegerType();
@@ -417,7 +423,7 @@ ABIArgInfo AArch64ABIInfo::classifyArgumentType(QualType
Ty, bool IsVariadicFn,
// elsewhere for GNU compatibility.
uint64_t Size = getContext().getTypeSize(Ty);
bool IsEmpty = isEmptyRecord(getContext(), Ty, true);
- if (IsEmpty || Size == 0) {
+ if (!Ty->isSVESizelessBuiltinType() && (IsEmpty || Size == 0)) {
if (!getContext().getLangOpts().CPlusPlus || isDarwinPCS())
return ABIArgInfo::getIgnore();
@@ -504,7 +510,7 @@ ABIArgInfo AArch64ABIInfo::classifyReturnType(QualType
RetTy,
if (RetTy->isVectorType() && getContext().getTypeSize(RetTy) > 128)
return getNaturalAlignIndirect(RetTy);
- if (!isAggregateTypeForABI(RetTy)) {
+ if (!passAsAggregateType(RetTy)) {
// Treat an enum type as its underlying type.
if (const EnumType *EnumTy = RetTy->getAs<EnumType>())
RetTy = EnumTy->getDecl()->getIntegerType();
@@ -519,7 +525,8 @@ ABIArgInfo AArch64ABIInfo::classifyReturnType(QualType
RetTy,
}
uint64_t Size = getContext().getTypeSize(RetTy);
- if (isEmptyRecord(getContext(), RetTy, true) || Size == 0)
+ if (!RetTy->isSVESizelessBuiltinType() &&
+ (isEmptyRecord(getContext(), RetTy, true) || Size == 0))
return ABIArgInfo::getIgnore();
const Type *Base = nullptr;
@@ -654,6 +661,15 @@ bool
AArch64ABIInfo::isZeroLengthBitfieldPermittedInHomogeneousAggregate()
return true;
}
+bool AArch64ABIInfo::passAsAggregateType(QualType Ty) const {
+ if (Kind == AArch64ABIKind::AAPCS && Ty->isSVESizelessBuiltinType()) {
+ const auto *BT = Ty->getAs<BuiltinType>();
+ return !BT->isSVECount() &&
+ getContext().getBuiltinVectorTypeInfo(BT).NumVectors > 1;
+ }
+ return isAggregateTypeForABI(Ty);
+}
+
// Check if a type needs to be passed in registers as a Pure Scalable Type (as
// defined by AAPCS64). Return the number of data vectors and the number of
// predicate vectors in the type, into `NVec` and `NPred`, respectively. Upon
@@ -719,37 +735,38 @@ bool AArch64ABIInfo::passAsPureScalableType(
return true;
}
- const auto *VT = Ty->getAs<VectorType>();
- if (!VT)
- return false;
+ if (const auto *VT = Ty->getAs<VectorType>()) {
+ if (VT->getVectorKind() == VectorKind::SveFixedLengthPredicate) {
+ ++NPred;
+ if (CoerceToSeq.size() + 1 > 12)
+ return false;
+ CoerceToSeq.push_back(convertFixedToScalableVectorType(VT));
+ return true;
+ }
- if (VT->getVectorKind() == VectorKind::SveFixedLengthPredicate) {
- ++NPred;
- if (CoerceToSeq.size() + 1 > 12)
- return false;
- CoerceToSeq.push_back(convertFixedToScalableVectorType(VT));
- return true;
- }
+ if (VT->getVectorKind() == VectorKind::SveFixedLengthData) {
+ ++NVec;
+ if (CoerceToSeq.size() + 1 > 12)
+ return false;
+ CoerceToSeq.push_back(convertFixedToScalableVectorType(VT));
+ return true;
+ }
- if (VT->getVectorKind() == VectorKind::SveFixedLengthData) {
- ++NVec;
- if (CoerceToSeq.size() + 1 > 12)
- return false;
- CoerceToSeq.push_back(convertFixedToScalableVectorType(VT));
- return true;
+ return false;
}
- if (!VT->isBuiltinType())
+ if (!Ty->isBuiltinType())
return false;
- switch (cast<BuiltinType>(VT)->getKind()) {
+ bool isPredicate;
+ switch (Ty->getAs<BuiltinType>()->getKind()) {
#define SVE_VECTOR_TYPE(Name, MangledName, Id, SingletonId)
\
case BuiltinType::Id:
\
- ++NVec;
\
+ isPredicate = false;
\
break;
#define SVE_PREDICATE_TYPE(Name, MangledName, Id, SingletonId)
\
case BuiltinType::Id:
\
- ++NPred;
\
+ isPredicate = true;
\
break;
#define SVE_TYPE(Name, Id, SingletonId)
#include "clang/Basic/AArch64SVEACLETypes.def"
@@ -761,8 +778,14 @@ bool AArch64ABIInfo::passAsPureScalableType(
getContext().getBuiltinVectorTypeInfo(cast<BuiltinType>(Ty));
assert(Info.NumVectors > 0 && Info.NumVectors <= 4 &&
"Expected 1, 2, 3 or 4 vectors!");
- auto VTy = llvm::ScalableVectorType::get(CGT.ConvertType(Info.ElementType),
- Info.EC.getKnownMinValue());
+ if (isPredicate)
+ NPred += Info.NumVectors;
+ else
+ NVec += Info.NumVectors;
+ llvm::Type *EltTy = Info.ElementType->isMFloat8Type()
+ ? llvm::Type::getInt8Ty(getVMContext())
+ : CGT.ConvertType(Info.ElementType);
+ auto *VTy = llvm::ScalableVectorType::get(EltTy, Info.EC.getKnownMinValue());
if (CoerceToSeq.size() + Info.NumVectors > 12)
return false;
diff --git a/clang/test/CodeGen/AArch64/pure-scalable-args.c
b/clang/test/CodeGen/AArch64/pure-scalable-args.c
index f40c944335e4a4..e1dbf5f48ce0ce 100644
--- a/clang/test/CodeGen/AArch64/pure-scalable-args.c
+++ b/clang/test/CodeGen/AArch64/p...
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/118969
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