[NFC] Move areCompatibleSveTypes etc. from ASTContext to SemaARM. (#145429)

In preparation for making these functions interact with the current
context; see #144611.

Author: efriedma-quic

clang/include/clang/AST/ASTContext.h

@@ -2524,15 +2524,6 @@ class ASTContext : public RefCountedBase<ASTContext> {
   /// types.
   bool areCompatibleVectorTypes(QualType FirstVec, QualType SecondVec);
 
-  /// Return true if the given types are an SVE builtin and a VectorType that
-  /// is a fixed-length representation of the SVE builtin for a specific
-  /// vector-length.
-  bool areCompatibleSveTypes(QualType FirstType, QualType SecondType);
-
-  /// Return true if the given vector types are lax-compatible SVE vector types,
-  /// false otherwise.
-  bool areLaxCompatibleSveTypes(QualType FirstType, QualType SecondType);
-
   /// Return true if the given types are an RISC-V vector builtin type and a
   /// VectorType that is a fixed-length representation of the RISC-V vector
   /// builtin type for a specific vector-length.

clang/include/clang/Sema/SemaARM.h

@@ -82,6 +82,15 @@ class SemaARM : public SemaBase {
   void handleInterruptSaveFPAttr(Decl *D, const ParsedAttr &AL);
 
   void CheckSMEFunctionDefAttributes(const FunctionDecl *FD);
+
+  /// Return true if the given types are an SVE builtin and a VectorType that
+  /// is a fixed-length representation of the SVE builtin for a specific
+  /// vector-length.
+  bool areCompatibleSveTypes(QualType FirstType, QualType SecondType);
+
+  /// Return true if the given vector types are lax-compatible SVE vector types,
+  /// false otherwise.
+  bool areLaxCompatibleSveTypes(QualType FirstType, QualType SecondType);
 };
 
 SemaARM::ArmStreamingType getArmStreamingFnType(const FunctionDecl *FD);

clang/lib/AST/ASTContext.cpp

@@ -10510,87 +10510,6 @@ bool ASTContext::areCompatibleVectorTypes(QualType FirstVec,
   return false;
 }
 
-/// getSVETypeSize - Return SVE vector or predicate register size.
-static uint64_t getSVETypeSize(ASTContext &Context, const BuiltinType *Ty) {
-  assert(Ty->isSveVLSBuiltinType() && "Invalid SVE Type");
-  if (Ty->getKind() == BuiltinType::SveBool ||
-      Ty->getKind() == BuiltinType::SveCount)
-    return (Context.getLangOpts().VScaleMin * 128) / Context.getCharWidth();
-  return Context.getLangOpts().VScaleMin * 128;
-}
-
-bool ASTContext::areCompatibleSveTypes(QualType FirstType,
-                                       QualType SecondType) {
-  auto IsValidCast = [this](QualType FirstType, QualType SecondType) {
-    if (const auto *BT = FirstType->getAs<BuiltinType>()) {
-      if (const auto *VT = SecondType->getAs<VectorType>()) {
-        // Predicates have the same representation as uint8 so we also have to
-        // check the kind to make these types incompatible.
-        if (VT->getVectorKind() == VectorKind::SveFixedLengthPredicate)
-          return BT->getKind() == BuiltinType::SveBool;
-        else if (VT->getVectorKind() == VectorKind::SveFixedLengthData)
-          return VT->getElementType().getCanonicalType() ==
-                 FirstType->getSveEltType(*this);
-        else if (VT->getVectorKind() == VectorKind::Generic)
-          return getTypeSize(SecondType) == getSVETypeSize(*this, BT) &&
-                 hasSameType(VT->getElementType(),
-                             getBuiltinVectorTypeInfo(BT).ElementType);
-      }
-    }
-    return false;
-  };
-
-  return IsValidCast(FirstType, SecondType) ||
-         IsValidCast(SecondType, FirstType);
-}
-
-bool ASTContext::areLaxCompatibleSveTypes(QualType FirstType,
-                                          QualType SecondType) {
-  auto IsLaxCompatible = [this](QualType FirstType, QualType SecondType) {
-    const auto *BT = FirstType->getAs<BuiltinType>();
-    if (!BT)
-      return false;
-
-    const auto *VecTy = SecondType->getAs<VectorType>();
-    if (VecTy && (VecTy->getVectorKind() == VectorKind::SveFixedLengthData ||
-                  VecTy->getVectorKind() == VectorKind::Generic)) {
-      const LangOptions::LaxVectorConversionKind LVCKind =
-          getLangOpts().getLaxVectorConversions();
-
-      // Can not convert between sve predicates and sve vectors because of
-      // different size.
-      if (BT->getKind() == BuiltinType::SveBool &&
-          VecTy->getVectorKind() == VectorKind::SveFixedLengthData)
-        return false;
-
-      // If __ARM_FEATURE_SVE_BITS != N do not allow GNU vector lax conversion.
-      // "Whenever __ARM_FEATURE_SVE_BITS==N, GNUT implicitly
-      // converts to VLAT and VLAT implicitly converts to GNUT."
-      // ACLE Spec Version 00bet6, 3.7.3.2. Behavior common to vectors and
-      // predicates.
-      if (VecTy->getVectorKind() == VectorKind::Generic &&
-          getTypeSize(SecondType) != getSVETypeSize(*this, BT))
-        return false;
-
-      // If -flax-vector-conversions=all is specified, the types are
-      // certainly compatible.
-      if (LVCKind == LangOptions::LaxVectorConversionKind::All)
-        return true;
-
-      // If -flax-vector-conversions=integer is specified, the types are
-      // compatible if the elements are integer types.
-      if (LVCKind == LangOptions::LaxVectorConversionKind::Integer)
-        return VecTy->getElementType().getCanonicalType()->isIntegerType() &&
-               FirstType->getSveEltType(*this)->isIntegerType();
-    }
-
-    return false;
-  };
-
-  return IsLaxCompatible(FirstType, SecondType) ||
-         IsLaxCompatible(SecondType, FirstType);
-}
-
 /// getRVVTypeSize - Return RVV vector register size.
 static uint64_t getRVVTypeSize(ASTContext &Context, const BuiltinType *Ty) {
   assert(Ty->isRVVVLSBuiltinType() && "Invalid RVV Type");

clang/lib/Sema/SemaARM.cpp

@@ -1409,4 +1409,88 @@ void SemaARM::CheckSMEFunctionDefAttributes(const FunctionDecl *FD) {
   }
 }
 
+/// getSVETypeSize - Return SVE vector or predicate register size.
+static uint64_t getSVETypeSize(ASTContext &Context, const BuiltinType *Ty) {
+  assert(Ty->isSveVLSBuiltinType() && "Invalid SVE Type");
+  if (Ty->getKind() == BuiltinType::SveBool ||
+      Ty->getKind() == BuiltinType::SveCount)
+    return (Context.getLangOpts().VScaleMin * 128) / Context.getCharWidth();
+  return Context.getLangOpts().VScaleMin * 128;
+}
+
+bool SemaARM::areCompatibleSveTypes(QualType FirstType, QualType SecondType) {
+  auto IsValidCast = [this](QualType FirstType, QualType SecondType) {
+    if (const auto *BT = FirstType->getAs<BuiltinType>()) {
+      if (const auto *VT = SecondType->getAs<VectorType>()) {
+        ASTContext &Context = getASTContext();
+        // Predicates have the same representation as uint8 so we also have to
+        // check the kind to make these types incompatible.
+        if (VT->getVectorKind() == VectorKind::SveFixedLengthPredicate)
+          return BT->getKind() == BuiltinType::SveBool;
+        else if (VT->getVectorKind() == VectorKind::SveFixedLengthData)
+          return VT->getElementType().getCanonicalType() ==
+                 FirstType->getSveEltType(Context);
+        else if (VT->getVectorKind() == VectorKind::Generic)
+          return Context.getTypeSize(SecondType) ==
+                     getSVETypeSize(Context, BT) &&
+                 Context.hasSameType(
+                     VT->getElementType(),
+                     Context.getBuiltinVectorTypeInfo(BT).ElementType);
+      }
+    }
+    return false;
+  };
+
+  return IsValidCast(FirstType, SecondType) ||
+         IsValidCast(SecondType, FirstType);
+}
+
+bool SemaARM::areLaxCompatibleSveTypes(QualType FirstType,
+                                       QualType SecondType) {
+  auto IsLaxCompatible = [this](QualType FirstType, QualType SecondType) {
+    const auto *BT = FirstType->getAs<BuiltinType>();
+    if (!BT)
+      return false;
+
+    const auto *VecTy = SecondType->getAs<VectorType>();
+    if (VecTy && (VecTy->getVectorKind() == VectorKind::SveFixedLengthData ||
+                  VecTy->getVectorKind() == VectorKind::Generic)) {
+      const LangOptions::LaxVectorConversionKind LVCKind =
+          getLangOpts().getLaxVectorConversions();
+      ASTContext &Context = getASTContext();
+
+      // Can not convert between sve predicates and sve vectors because of
+      // different size.
+      if (BT->getKind() == BuiltinType::SveBool &&
+          VecTy->getVectorKind() == VectorKind::SveFixedLengthData)
+        return false;
+
+      // If __ARM_FEATURE_SVE_BITS != N do not allow GNU vector lax conversion.
+      // "Whenever __ARM_FEATURE_SVE_BITS==N, GNUT implicitly
+      // converts to VLAT and VLAT implicitly converts to GNUT."
+      // ACLE Spec Version 00bet6, 3.7.3.2. Behavior common to vectors and
+      // predicates.
+      if (VecTy->getVectorKind() == VectorKind::Generic &&
+          Context.getTypeSize(SecondType) != getSVETypeSize(Context, BT))
+        return false;
+
+      // If -flax-vector-conversions=all is specified, the types are
+      // certainly compatible.
+      if (LVCKind == LangOptions::LaxVectorConversionKind::All)
+        return true;
+
+      // If -flax-vector-conversions=integer is specified, the types are
+      // compatible if the elements are integer types.
+      if (LVCKind == LangOptions::LaxVectorConversionKind::Integer)
+        return VecTy->getElementType().getCanonicalType()->isIntegerType() &&
+               FirstType->getSveEltType(Context)->isIntegerType();
+    }
+
+    return false;
+  };
+
+  return IsLaxCompatible(FirstType, SecondType) ||
+         IsLaxCompatible(SecondType, FirstType);
+}
+
 } // namespace clang

clang/lib/Sema/SemaChecking.cpp

@@ -12055,10 +12055,10 @@ void Sema::CheckImplicitConversion(Expr *E, QualType T, SourceLocation CC,
   // Strip vector types.
   if (isa<VectorType>(Source)) {
     if (Target->isSveVLSBuiltinType() &&
-        (Context.areCompatibleSveTypes(QualType(Target, 0),
-                                       QualType(Source, 0)) ||
-         Context.areLaxCompatibleSveTypes(QualType(Target, 0),
-                                          QualType(Source, 0))))
+        (ARM().areCompatibleSveTypes(QualType(Target, 0),
+                                     QualType(Source, 0)) ||
+         ARM().areLaxCompatibleSveTypes(QualType(Target, 0),
+                                        QualType(Source, 0))))
       return;
 
     if (Target->isRVVVLSBuiltinType() &&
@@ -12118,10 +12118,10 @@ void Sema::CheckImplicitConversion(Expr *E, QualType T, SourceLocation CC,
     const Type *OriginalTarget = Context.getCanonicalType(T).getTypePtr();
     // Handle conversion from scalable to fixed when msve-vector-bits is
     // specified
-    if (Context.areCompatibleSveTypes(QualType(OriginalTarget, 0),
-                                      QualType(Source, 0)) ||
-        Context.areLaxCompatibleSveTypes(QualType(OriginalTarget, 0),
-                                         QualType(Source, 0)))
+    if (ARM().areCompatibleSveTypes(QualType(OriginalTarget, 0),
+                                    QualType(Source, 0)) ||
+        ARM().areLaxCompatibleSveTypes(QualType(OriginalTarget, 0),
+                                       QualType(Source, 0)))
       return;
 
     // If the vector cast is cast between two vectors of the same size, it is

clang/lib/Sema/SemaExpr.cpp

@@ -51,6 +51,7 @@
 #include "clang/Sema/ParsedTemplate.h"
 #include "clang/Sema/Scope.h"
 #include "clang/Sema/ScopeInfo.h"
+#include "clang/Sema/SemaARM.h"
 #include "clang/Sema/SemaCUDA.h"
 #include "clang/Sema/SemaFixItUtils.h"
 #include "clang/Sema/SemaHLSL.h"
@@ -9397,8 +9398,8 @@ AssignConvertType Sema::CheckAssignmentConstraints(QualType LHSType,
     // Allow assignments between fixed-length and sizeless SVE vectors.
     if ((LHSType->isSVESizelessBuiltinType() && RHSType->isVectorType()) ||
         (LHSType->isVectorType() && RHSType->isSVESizelessBuiltinType()))
-      if (Context.areCompatibleSveTypes(LHSType, RHSType) ||
-          Context.areLaxCompatibleSveTypes(LHSType, RHSType)) {
+      if (ARM().areCompatibleSveTypes(LHSType, RHSType) ||
+          ARM().areLaxCompatibleSveTypes(LHSType, RHSType)) {
         Kind = CK_BitCast;
         return AssignConvertType::Compatible;
       }

clang/lib/Sema/SemaOverload.cpp

@@ -30,6 +30,7 @@
 #include "clang/Sema/Initialization.h"
 #include "clang/Sema/Lookup.h"
 #include "clang/Sema/Overload.h"
+#include "clang/Sema/SemaARM.h"
 #include "clang/Sema/SemaCUDA.h"
 #include "clang/Sema/SemaObjC.h"
 #include "clang/Sema/Template.h"
@@ -2180,8 +2181,8 @@ static bool IsVectorConversion(Sema &S, QualType FromType, QualType ToType,
 
   if (ToType->isSVESizelessBuiltinType() ||
       FromType->isSVESizelessBuiltinType())
-    if (S.Context.areCompatibleSveTypes(FromType, ToType) ||
-        S.Context.areLaxCompatibleSveTypes(FromType, ToType)) {
+    if (S.ARM().areCompatibleSveTypes(FromType, ToType) ||
+        S.ARM().areLaxCompatibleSveTypes(FromType, ToType)) {
       ICK = ICK_SVE_Vector_Conversion;
       return true;
     }
@@ -4735,9 +4736,9 @@ CompareStandardConversionSequences(Sema &S, SourceLocation Loc,
   if (SCS1.Second == ICK_SVE_Vector_Conversion &&
       SCS2.Second == ICK_SVE_Vector_Conversion) {
     bool SCS1IsCompatibleSVEVectorConversion =
-        S.Context.areCompatibleSveTypes(SCS1.getFromType(), SCS1.getToType(2));
+        S.ARM().areCompatibleSveTypes(SCS1.getFromType(), SCS1.getToType(2));
     bool SCS2IsCompatibleSVEVectorConversion =
-        S.Context.areCompatibleSveTypes(SCS2.getFromType(), SCS2.getToType(2));
+        S.ARM().areCompatibleSveTypes(SCS2.getFromType(), SCS2.getToType(2));
 
     if (SCS1IsCompatibleSVEVectorConversion !=
         SCS2IsCompatibleSVEVectorConversion)