6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-11-24 08:18:33 +00:00
Code Issues Projects Releases Wiki Activity

IR: Use a bitmask to access GlobalObject subclass data

Browse Source 
Make room for more than just `Function::isMaterializable()` in the
`GlobalObject` subclass data bitfield.  Since we're treating it like a
bitfield, change `Function::Function()` to zero-out the whole thing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235770 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2015-04-24 20:47:23 +00:00
parent 223d9cfd30
commit af8df399e1
2 changed files with 15 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
include/llvm/IR/Function.h
View File

@@ -77,6 +77,16 @@ private:
* bit 3-6: CallingConvention * bit 3-6: CallingConvention
*/ */
/// Bits from GlobalObject::GlobalObjectSubclassData.
enum {
/// Whether this function is materializable.
IsMaterializableBit = 1 << 0
};
void setGlobalObjectBit(unsigned Mask, bool Value) {
setGlobalObjectSubClassData((~Mask & getGlobalObjectSubClassData()) |
(Value ? Mask : 0u));
}
friend class SymbolTableListTraits<Function, Module>; friend class SymbolTableListTraits<Function, Module>;
void setParent(Module *parent); void setParent(Module *parent);

8
lib/IR/Function.cpp
View File

@@ -206,10 +206,12 @@ void Argument::removeAttr(AttributeSet AS) {
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
bool Function::isMaterializable() const { bool Function::isMaterializable() const {
return getGlobalObjectSubClassData(); return getGlobalObjectSubClassData() & IsMaterializableBit;
} }
void Function::setIsMaterializable(bool V) { setGlobalObjectSubClassData(V); } void Function::setIsMaterializable(bool V) {
setGlobalObjectBit(IsMaterializableBit, V);
}
LLVMContext &Function::getContext() const { LLVMContext &Function::getContext() const {
return getType()->getContext(); return getType()->getContext();
@@ -244,7 +246,7 @@ Function::Function(FunctionType *Ty, LinkageTypes Linkage, const Twine &name,
Ty(Ty) { Ty(Ty) {
assert(FunctionType::isValidReturnType(getReturnType()) && assert(FunctionType::isValidReturnType(getReturnType()) &&
"invalid return type"); "invalid return type");
setIsMaterializable(false); setGlobalObjectSubClassData(0);
SymTab = new ValueSymbolTable(); SymTab = new ValueSymbolTable();
// If the function has arguments, mark them as lazily built. // If the function has arguments, mark them as lazily built.