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The top bit is used to determine whether it's a MachineConstantPoolValue.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30324 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2006-09-14 07:30:48 +00:00
parent c7695eb504
commit baf4500b3a
1 changed files with 4 additions and 2 deletions
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6
include/llvm/CodeGen/SelectionDAGNodes.h
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@@ -1150,7 +1150,7 @@ class ConstantPoolSDNode : public SDNode {
Constant *ConstVal; Constant *ConstVal;
MachineConstantPoolValue *MachineCPVal; MachineConstantPoolValue *MachineCPVal;
} Val; } Val;
int Offset; int Offset; // It's a MachineConstantPoolValue if top bit is set.
unsigned Alignment; unsigned Alignment;
protected: protected:
friend class SelectionDAG; friend class SelectionDAG;
@@ -1200,7 +1200,9 @@ public:
return Val.MachineCPVal; return Val.MachineCPVal;
} }
int getOffset() const { return Offset; } int getOffset() const {
return Offset & ~(1 << (sizeof(unsigned)*8-1));
}
// Return the alignment of this constant pool object, which is either 0 (for // Return the alignment of this constant pool object, which is either 0 (for
// default alignment) or log2 of the desired value. // default alignment) or log2 of the desired value.