replica
/
hanchenye-llvm-project
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Use a real union for IdentifyingPassPtr. 

This avoids a nasty const correctness issue (AnalysisIDs are const, Pass* isn't).

llvm-svn: 179213
This commit is contained in:
Benjamin Kramer 2013-04-10 20:50:44 +00:00
parent c03998bdb5
commit 04b6e80381
1 changed files with 9 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
llvm/include/llvm/CodeGen/Passes.h
View File

@ -50,24 +50,26 @@ class PassConfigImpl;
///
/// AnalysisID is sadly char*, so PointerIntPair won't work.
class IdentifyingPassPtr {
void *P;
union {
AnalysisID ID;
Pass *P;
};
bool IsInstance;
public:
IdentifyingPassPtr(): P(0), IsInstance(false) {}
IdentifyingPassPtr(AnalysisID IDPtr): P((void*)IDPtr), IsInstance(false) {}
IdentifyingPassPtr(Pass *InstancePtr)
: P((void*)InstancePtr), IsInstance(true) {}
IdentifyingPassPtr() : P(0), IsInstance(false) {}
IdentifyingPassPtr(AnalysisID IDPtr) : ID(IDPtr), IsInstance(false) {}
IdentifyingPassPtr(Pass *InstancePtr) : P(InstancePtr), IsInstance(true) {}
bool isValid() const { return P; }
bool isInstance() const { return IsInstance; }
AnalysisID getID() const {
assert(!IsInstance && "Not a Pass ID");
return (AnalysisID)P;
return ID;
}
Pass *getInstance() const {
assert(IsInstance && "Not a Pass Instance");
return (Pass *)P;
return P;
}
};