mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-20 10:30:03 +00:00
b89e071aea
"load (cast foo)". This allows us to compile C++ code like this:
class Bclass {
public: virtual int operator()() { return 666; }
};
class Dclass: public Bclass {
public: virtual int operator()() { return 667; }
} ;
int main(int argc, char** argv) {
Dclass x;
return x();
}
Into this:
int %main(int %argc, sbyte** %argv) {
entry:
call void %__main( )
ret int 667
}
Instead of this:
int %main(int %argc, sbyte** %argv) {
entry:
%x = alloca "struct.std::bad_typeid" ; <"struct.std::bad_typeid"*> [#uses=3]
call void %__main( )
%tmp.1.i.i = getelementptr "struct.std::bad_typeid"* %x, uint 0, uint 0, uint 0 ; <int (...)***> [#uses=1]
store int (...)** getelementptr ([3 x int (...)*]* %vtable for Bclass, int 0, long 2), int (...)*** %tmp.1.i.i
%tmp.3.i = getelementptr "struct.std::bad_typeid"* %x, int 0, uint 0, uint 0 ; <int (...)***> [#uses=1]
store int (...)** getelementptr ([3 x int (...)*]* %vtable for Dclass, int 0, long 2), int (...)*** %tmp.3.i
%tmp.5 = load int ("struct.std::bad_typeid"*)** cast (int (...)** getelementptr ([3 x int (...)*]* %vtable for Dclass, int 0, long 2) to int
("struct.std::bad_typeid"*)**) ; <int ("struct.std::bad_typeid"*)*> [#uses=1]
%tmp.6 = call int %tmp.5( "struct.std::bad_typeid"* %x ) ; <int> [#uses=1]
ret int %tmp.6
ret int 0
}
In order words, we now resolve the virtual function call.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14783 91177308-0d34-0410-b5e6-96231b3b80d8
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|---|---|---|
| .. | ||
| ADCE.cpp | ||
| BasicBlockPlacement.cpp | ||
| ConstantProp.cpp | ||
| CorrelatedExprs.cpp | ||
| DCE.cpp | ||
| DecomposeMultiDimRefs.cpp | ||
| GCSE.cpp | ||
| IndVarSimplify.cpp | ||
| InstructionCombining.cpp | ||
| LICM.cpp | ||
| LoopUnroll.cpp | ||
| LoopUnswitch.cpp | ||
| LowerConstantExprs.cpp | ||
| LowerGC.cpp | ||
| Makefile | ||
| PiNodeInsertion.cpp | ||
| PRE.cpp | ||
| Reassociate.cpp | ||
| ScalarReplAggregates.cpp | ||
| SCCP.cpp | ||
| SimplifyCFG.cpp | ||
| SymbolStripping.cpp | ||
| TailDuplication.cpp | ||
| TailRecursionElimination.cpp | ||