OSchip
/
llvm-project
mirror of https://github.com/THU-DSP-LAB/llvm-project.git
13
0
Fork 6
Code Issues Packages Projects Releases Wiki Activity

Fixed VC++ bitfield to unsigned/signed sign propagation issue. 

llvm-svn: 42252
This commit is contained in:
Hartmut Kaiser 2007-09-23 23:39:51 +00:00
parent 15efb43db7
commit e675ff918b
1 changed files with 2 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
clang/include/clang/AST/Type.h
View File

@ -213,7 +213,7 @@ private:
/// TypeClass bitfield - Enum that specifies what subclass this belongs to. /// TypeClass bitfield - Enum that specifies what subclass this belongs to.
/// Note that this should stay at the end of the ivars for Type so that /// Note that this should stay at the end of the ivars for Type so that
/// subclasses can pack their bitfields into the same word. /// subclasses can pack their bitfields into the same word.
TypeClass TC : 4; unsigned TC : 4;
protected: protected:
// silence VC++ warning C4355: 'this' : used in base member initializer list // silence VC++ warning C4355: 'this' : used in base member initializer list
Type *this_() { return this; } Type *this_() { return this; }
@ -222,10 +222,7 @@ protected:
virtual ~Type(); virtual ~Type();
friend class ASTContext; friend class ASTContext;
public: public:
// Masking the 4 bits from the bitfield above is necessary, since at least TypeClass getTypeClass() const { return static_cast<TypeClass>(TC); }
// VC++ fills the unused bits of the word the bitfield is stored in with
// '1' resulting in invalid values returned from this function otherwise.
TypeClass getTypeClass() const { return static_cast<TypeClass>(TC & 0xf); }
bool isCanonical() const { return CanonicalType.getTypePtr() == this; } bool isCanonical() const { return CanonicalType.getTypePtr() == this; }