/// SDISel for the code generation of additional basic blocks needed by multi-
/// case switch statements.
struct CaseBlock {
- CaseBlock(ISD::CondCode cc, Value *cmplhs, Value *cmprhs,
+ CaseBlock(ISD::CondCode cc, Value *cmplhs, Value *cmprhs, Value *cmpmiddle,
MachineBasicBlock *truebb, MachineBasicBlock *falsebb,
MachineBasicBlock *me)
- : CC(cc), CmpLHS(cmplhs), CmpRHS(cmprhs),
+ : CC(cc), CmpLHS(cmplhs), CmpMHS(cmpmiddle), CmpRHS(cmprhs),
TrueBB(truebb), FalseBB(falsebb), ThisBB(me) {}
// CC - the condition code to use for the case block's setcc node
ISD::CondCode CC;
- // CmpLHS/CmpRHS - The LHS/RHS of the comparison to emit.
- Value *CmpLHS, *CmpRHS;
+ // CmpLHS/CmpRHS/CmpMHS - The LHS/MHS/RHS of the comparison to emit.
+ // Emit by default LHS op RHS. MHS is used for range comparisons:
+ // If MHS is not null: (LHS <= MHS) and (MHS <= RHS).
+ Value *CmpLHS, *CmpMHS, *CmpRHS;
// TrueBB/FalseBB - the block to branch to if the setcc is true/false.
MachineBasicBlock *TrueBB, *FalseBB;
// ThisBB - the block into which to emit the code for the setcc and branches
bool Emitted;
};
typedef std::pair<JumpTableHeader, JumpTable> JumpTableBlock;
-
+
+ struct BitTestCase {
+ BitTestCase(uint64_t M, MachineBasicBlock* T, MachineBasicBlock* Tr):
+ Mask(M), ThisBB(T), TargetBB(Tr) { };
+ uint64_t Mask;
+ MachineBasicBlock* ThisBB;
+ MachineBasicBlock* TargetBB;
+ };
+
+ typedef SmallVector<BitTestCase, 3> BitTestInfo;
+
+ struct BitTestBlock {
+ BitTestBlock(uint64_t F, uint64_t R, Value* SV,
+ unsigned Rg, bool E,
+ MachineBasicBlock* P, MachineBasicBlock* D,
+ const BitTestInfo& C):
+ First(F), Range(R), SValue(SV), Reg(Rg), Emitted(E),
+ Parent(P), Default(D), Cases(C) { };
+ uint64_t First;
+ uint64_t Range;
+ Value *SValue;
+ unsigned Reg;
+ bool Emitted;
+ MachineBasicBlock *Parent;
+ MachineBasicBlock *Default;
+ BitTestInfo Cases;
+ };
protected:
/// Pick a safe ordering and emit instructions for each target node in the
/// graph.
/// JTCases - Vector of JumpTable structures which holds necessary information
/// for emitting a jump tables during SwitchInst code generation.
std::vector<JumpTableBlock> JTCases;
+
+ std::vector<BitTestBlock> BitTestCases;
};
}