Teach Type::is[un]SignedIntegerType about enum decls. This allows the code generator
to emit signed comparisons when needed for enum decl references. This implements
test/CodeGen/enum.c. I think enums should be good now.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@41572 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/AST/Type.cpp b/AST/Type.cpp
index f4c5aa7..9fca35a 100644
--- a/AST/Type.cpp
+++ b/AST/Type.cpp
@@ -391,21 +391,39 @@
return false;
}
+/// isSignedIntegerType - Return true if this is an integer type that is
+/// signed, according to C99 6.2.5p4 [char, signed char, short, int, long..],
+/// an enum decl which has a signed representation, or a vector of signed
+/// integer element type.
bool Type::isSignedIntegerType() const {
if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) {
return BT->getKind() >= BuiltinType::Char_S &&
BT->getKind() <= BuiltinType::LongLong;
}
+
+ if (const TagType *TT = dyn_cast<TagType>(CanonicalType))
+ if (const EnumDecl *ED = dyn_cast<EnumDecl>(TT->getDecl()))
+ return ED->getIntegerType()->isSignedIntegerType();
+
if (const VectorType *VT = dyn_cast<VectorType>(CanonicalType))
return VT->getElementType()->isSignedIntegerType();
return false;
}
+/// isUnsignedIntegerType - Return true if this is an integer type that is
+/// unsigned, according to C99 6.2.5p6 [which returns true for _Bool], an enum
+/// decl which has an unsigned representation, or a vector of unsigned integer
+/// element type.
bool Type::isUnsignedIntegerType() const {
if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) {
return BT->getKind() >= BuiltinType::Bool &&
BT->getKind() <= BuiltinType::ULongLong;
}
+
+ if (const TagType *TT = dyn_cast<TagType>(CanonicalType))
+ if (const EnumDecl *ED = dyn_cast<EnumDecl>(TT->getDecl()))
+ return ED->getIntegerType()->isUnsignedIntegerType();
+
if (const VectorType *VT = dyn_cast<VectorType>(CanonicalType))
return VT->getElementType()->isUnsignedIntegerType();
return false;