#include "llvm/Constants.h"
#include "llvm/Instructions.h"
+#include "llvm/Operator.h"
namespace llvm {
namespace PatternMatch {
return const_cast<Pattern&>(P).match(V);
}
+
+template<typename SubPattern_t>
+struct OneUse_match {
+ SubPattern_t SubPattern;
+
+ OneUse_match(const SubPattern_t &SP) : SubPattern(SP) {}
+
+ template<typename OpTy>
+ bool match(OpTy *V) {
+ return V->hasOneUse() && SubPattern.match(V);
+ }
+};
+
+template<typename T>
+inline OneUse_match<T> m_OneUse(const T &SubPattern) { return SubPattern; }
+
+
template<typename Class>
-struct leaf_ty {
+struct class_match {
template<typename ITy>
bool match(ITy *V) { return isa<Class>(V); }
};
/// m_Value() - Match an arbitrary value and ignore it.
-inline leaf_ty<Value> m_Value() { return leaf_ty<Value>(); }
+inline class_match<Value> m_Value() { return class_match<Value>(); }
/// m_ConstantInt() - Match an arbitrary ConstantInt and ignore it.
-inline leaf_ty<ConstantInt> m_ConstantInt() { return leaf_ty<ConstantInt>(); }
+inline class_match<ConstantInt> m_ConstantInt() {
+ return class_match<ConstantInt>();
+}
+/// m_Undef() - Match an arbitrary undef constant.
+inline class_match<UndefValue> m_Undef() { return class_match<UndefValue>(); }
+
+inline class_match<Constant> m_Constant() { return class_match<Constant>(); }
+
+struct match_zero {
+ template<typename ITy>
+ bool match(ITy *V) {
+ if (const Constant *C = dyn_cast<Constant>(V))
+ return C->isNullValue();
+ return false;
+ }
+};
+
+/// m_Zero() - Match an arbitrary zero/null constant. This includes
+/// zero_initializer for vectors and ConstantPointerNull for pointers.
+inline match_zero m_Zero() { return match_zero(); }
+
+
+struct apint_match {
+ const APInt *&Res;
+ apint_match(const APInt *&R) : Res(R) {}
+ template<typename ITy>
+ bool match(ITy *V) {
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(V)) {
+ Res = &CI->getValue();
+ return true;
+ }
+ // FIXME: Remove this.
+ if (ConstantVector *CV = dyn_cast<ConstantVector>(V))
+ if (ConstantInt *CI =
+ dyn_cast_or_null<ConstantInt>(CV->getSplatValue())) {
+ Res = &CI->getValue();
+ return true;
+ }
+ if (ConstantDataVector *CV = dyn_cast<ConstantDataVector>(V))
+ if (ConstantInt *CI =
+ dyn_cast_or_null<ConstantInt>(CV->getSplatValue())) {
+ Res = &CI->getValue();
+ return true;
+ }
+ return false;
+ }
+};
+
+/// m_APInt - Match a ConstantInt or splatted ConstantVector, binding the
+/// specified pointer to the contained APInt.
+inline apint_match m_APInt(const APInt *&Res) { return Res; }
+
template<int64_t Val>
-struct constantint_ty {
+struct constantint_match {
template<typename ITy>
bool match(ITy *V) {
if (const ConstantInt *CI = dyn_cast<ConstantInt>(V)) {
}
};
-/// m_ConstantInt(int64_t) - Match a ConstantInt with a specific value
-/// and ignore it.
+/// m_ConstantInt<int64_t> - Match a ConstantInt with a specific value.
template<int64_t Val>
-inline constantint_ty<Val> m_ConstantInt() {
- return constantint_ty<Val>();
+inline constantint_match<Val> m_ConstantInt() {
+ return constantint_match<Val>();
}
-struct zero_ty {
+/// cst_pred_ty - This helper class is used to match scalar and vector constants
+/// that satisfy a specified predicate.
+template<typename Predicate>
+struct cst_pred_ty : public Predicate {
template<typename ITy>
bool match(ITy *V) {
- if (const Constant *C = dyn_cast<Constant>(V))
- return C->isNullValue();
+ if (const ConstantInt *CI = dyn_cast<ConstantInt>(V))
+ return this->isValue(CI->getValue());
+ // FIXME: Remove this.
+ if (const ConstantVector *CV = dyn_cast<ConstantVector>(V))
+ if (ConstantInt *CI = dyn_cast_or_null<ConstantInt>(CV->getSplatValue()))
+ return this->isValue(CI->getValue());
+ if (const ConstantDataVector *CV = dyn_cast<ConstantDataVector>(V))
+ if (ConstantInt *CI = dyn_cast_or_null<ConstantInt>(CV->getSplatValue()))
+ return this->isValue(CI->getValue());
return false;
}
};
-/// m_Zero() - Match an arbitrary zero/null constant.
-inline zero_ty m_Zero() { return zero_ty(); }
-
-struct one_ty {
+/// api_pred_ty - This helper class is used to match scalar and vector constants
+/// that satisfy a specified predicate, and bind them to an APInt.
+template<typename Predicate>
+struct api_pred_ty : public Predicate {
+ const APInt *&Res;
+ api_pred_ty(const APInt *&R) : Res(R) {}
template<typename ITy>
bool match(ITy *V) {
- if (const ConstantInt *C = dyn_cast<ConstantInt>(V))
- return C->isOne();
+ if (const ConstantInt *CI = dyn_cast<ConstantInt>(V))
+ if (this->isValue(CI->getValue())) {
+ Res = &CI->getValue();
+ return true;
+ }
+
+ // FIXME: remove.
+ if (const ConstantVector *CV = dyn_cast<ConstantVector>(V))
+ if (ConstantInt *CI = dyn_cast_or_null<ConstantInt>(CV->getSplatValue()))
+ if (this->isValue(CI->getValue())) {
+ Res = &CI->getValue();
+ return true;
+ }
+
+ if (const ConstantDataVector *CV = dyn_cast<ConstantDataVector>(V))
+ if (ConstantInt *CI = dyn_cast_or_null<ConstantInt>(CV->getSplatValue()))
+ if (this->isValue(CI->getValue())) {
+ Res = &CI->getValue();
+ return true;
+ }
+
return false;
}
};
-/// m_One() - Match a an integer 1.
-inline one_ty m_One() { return one_ty(); }
-
+
+struct is_one {
+ bool isValue(const APInt &C) { return C == 1; }
+};
+
+/// m_One() - Match an integer 1 or a vector with all elements equal to 1.
+inline cst_pred_ty<is_one> m_One() { return cst_pred_ty<is_one>(); }
+inline api_pred_ty<is_one> m_One(const APInt *&V) { return V; }
+
+struct is_all_ones {
+ bool isValue(const APInt &C) { return C.isAllOnesValue(); }
+};
+
+/// m_AllOnes() - Match an integer or vector with all bits set to true.
+inline cst_pred_ty<is_all_ones> m_AllOnes() {return cst_pred_ty<is_all_ones>();}
+inline api_pred_ty<is_all_ones> m_AllOnes(const APInt *&V) { return V; }
+
+struct is_sign_bit {
+ bool isValue(const APInt &C) { return C.isSignBit(); }
+};
+
+/// m_SignBit() - Match an integer or vector with only the sign bit(s) set.
+inline cst_pred_ty<is_sign_bit> m_SignBit() {return cst_pred_ty<is_sign_bit>();}
+inline api_pred_ty<is_sign_bit> m_SignBit(const APInt *&V) { return V; }
+
+struct is_power2 {
+ bool isValue(const APInt &C) { return C.isPowerOf2(); }
+};
+
+/// m_Power2() - Match an integer or vector power of 2.
+inline cst_pred_ty<is_power2> m_Power2() { return cst_pred_ty<is_power2>(); }
+inline api_pred_ty<is_power2> m_Power2(const APInt *&V) { return V; }
template<typename Class>
struct bind_ty {
/// m_ConstantInt - Match a ConstantInt, capturing the value if we match.
inline bind_ty<ConstantInt> m_ConstantInt(ConstantInt *&CI) { return CI; }
+/// m_Constant - Match a Constant, capturing the value if we match.
+inline bind_ty<Constant> m_Constant(Constant *&C) { return C; }
+
/// specificval_ty - Match a specified Value*.
struct specificval_ty {
const Value *Val;
/// m_Specific - Match if we have a specific specified value.
inline specificval_ty m_Specific(const Value *V) { return V; }
+struct bind_const_intval_ty {
+ uint64_t &VR;
+ bind_const_intval_ty(uint64_t &V) : VR(V) {}
+
+ template<typename ITy>
+ bool match(ITy *V) {
+ if (ConstantInt *CV = dyn_cast<ConstantInt>(V))
+ if (CV->getBitWidth() <= 64) {
+ VR = CV->getZExtValue();
+ return true;
+ }
+ return false;
+ }
+};
+
+/// m_ConstantInt - Match a ConstantInt and bind to its value. This does not
+/// match ConstantInts wider than 64-bits.
+inline bind_const_intval_ty m_ConstantInt(uint64_t &V) { return V; }
//===----------------------------------------------------------------------===//
// Matchers for specific binary operators.
//
-template<typename LHS_t, typename RHS_t,
- unsigned Opcode, typename ConcreteTy = BinaryOperator>
+template<typename LHS_t, typename RHS_t, unsigned Opcode>
struct BinaryOp_match {
LHS_t L;
RHS_t R;
template<typename OpTy>
bool match(OpTy *V) {
if (V->getValueID() == Value::InstructionVal + Opcode) {
- ConcreteTy *I = cast<ConcreteTy>(V);
- return I->getOpcode() == Opcode && L.match(I->getOperand(0)) &&
- R.match(I->getOperand(1));
+ BinaryOperator *I = cast<BinaryOperator>(V);
+ return L.match(I->getOperand(0)) && R.match(I->getOperand(1));
}
if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V))
return CE->getOpcode() == Opcode && L.match(CE->getOperand(0)) &&
};
template<typename LHS, typename RHS>
-inline BinaryOp_match<LHS, RHS, Instruction::Add> m_Add(const LHS &L,
- const RHS &R) {
+inline BinaryOp_match<LHS, RHS, Instruction::Add>
+m_Add(const LHS &L, const RHS &R) {
return BinaryOp_match<LHS, RHS, Instruction::Add>(L, R);
}
template<typename LHS, typename RHS>
-inline BinaryOp_match<LHS, RHS, Instruction::FAdd> m_FAdd(const LHS &L,
- const RHS &R) {
+inline BinaryOp_match<LHS, RHS, Instruction::FAdd>
+m_FAdd(const LHS &L, const RHS &R) {
return BinaryOp_match<LHS, RHS, Instruction::FAdd>(L, R);
}
template<typename LHS, typename RHS>
-inline BinaryOp_match<LHS, RHS, Instruction::Sub> m_Sub(const LHS &L,
- const RHS &R) {
+inline BinaryOp_match<LHS, RHS, Instruction::Sub>
+m_Sub(const LHS &L, const RHS &R) {
return BinaryOp_match<LHS, RHS, Instruction::Sub>(L, R);
}
template<typename LHS, typename RHS>
-inline BinaryOp_match<LHS, RHS, Instruction::FSub> m_FSub(const LHS &L,
- const RHS &R) {
+inline BinaryOp_match<LHS, RHS, Instruction::FSub>
+m_FSub(const LHS &L, const RHS &R) {
return BinaryOp_match<LHS, RHS, Instruction::FSub>(L, R);
}
template<typename LHS, typename RHS>
-inline BinaryOp_match<LHS, RHS, Instruction::Mul> m_Mul(const LHS &L,
- const RHS &R) {
+inline BinaryOp_match<LHS, RHS, Instruction::Mul>
+m_Mul(const LHS &L, const RHS &R) {
return BinaryOp_match<LHS, RHS, Instruction::Mul>(L, R);
}
template<typename LHS, typename RHS>
-inline BinaryOp_match<LHS, RHS, Instruction::FMul> m_FMul(const LHS &L,
- const RHS &R) {
+inline BinaryOp_match<LHS, RHS, Instruction::FMul>
+m_FMul(const LHS &L, const RHS &R) {
return BinaryOp_match<LHS, RHS, Instruction::FMul>(L, R);
}
template<typename LHS, typename RHS>
-inline BinaryOp_match<LHS, RHS, Instruction::UDiv> m_UDiv(const LHS &L,
- const RHS &R) {
+inline BinaryOp_match<LHS, RHS, Instruction::UDiv>
+m_UDiv(const LHS &L, const RHS &R) {
return BinaryOp_match<LHS, RHS, Instruction::UDiv>(L, R);
}
template<typename LHS, typename RHS>
-inline BinaryOp_match<LHS, RHS, Instruction::SDiv> m_SDiv(const LHS &L,
- const RHS &R) {
+inline BinaryOp_match<LHS, RHS, Instruction::SDiv>
+m_SDiv(const LHS &L, const RHS &R) {
return BinaryOp_match<LHS, RHS, Instruction::SDiv>(L, R);
}
template<typename LHS, typename RHS>
-inline BinaryOp_match<LHS, RHS, Instruction::FDiv> m_FDiv(const LHS &L,
- const RHS &R) {
+inline BinaryOp_match<LHS, RHS, Instruction::FDiv>
+m_FDiv(const LHS &L, const RHS &R) {
return BinaryOp_match<LHS, RHS, Instruction::FDiv>(L, R);
}
template<typename LHS, typename RHS>
-inline BinaryOp_match<LHS, RHS, Instruction::URem> m_URem(const LHS &L,
- const RHS &R) {
+inline BinaryOp_match<LHS, RHS, Instruction::URem>
+m_URem(const LHS &L, const RHS &R) {
return BinaryOp_match<LHS, RHS, Instruction::URem>(L, R);
}
template<typename LHS, typename RHS>
-inline BinaryOp_match<LHS, RHS, Instruction::SRem> m_SRem(const LHS &L,
- const RHS &R) {
+inline BinaryOp_match<LHS, RHS, Instruction::SRem>
+m_SRem(const LHS &L, const RHS &R) {
return BinaryOp_match<LHS, RHS, Instruction::SRem>(L, R);
}
template<typename LHS, typename RHS>
-inline BinaryOp_match<LHS, RHS, Instruction::FRem> m_FRem(const LHS &L,
- const RHS &R) {
+inline BinaryOp_match<LHS, RHS, Instruction::FRem>
+m_FRem(const LHS &L, const RHS &R) {
return BinaryOp_match<LHS, RHS, Instruction::FRem>(L, R);
}
template<typename LHS, typename RHS>
-inline BinaryOp_match<LHS, RHS, Instruction::And> m_And(const LHS &L,
- const RHS &R) {
+inline BinaryOp_match<LHS, RHS, Instruction::And>
+m_And(const LHS &L, const RHS &R) {
return BinaryOp_match<LHS, RHS, Instruction::And>(L, R);
}
template<typename LHS, typename RHS>
-inline BinaryOp_match<LHS, RHS, Instruction::Or> m_Or(const LHS &L,
- const RHS &R) {
+inline BinaryOp_match<LHS, RHS, Instruction::Or>
+m_Or(const LHS &L, const RHS &R) {
return BinaryOp_match<LHS, RHS, Instruction::Or>(L, R);
}
template<typename LHS, typename RHS>
-inline BinaryOp_match<LHS, RHS, Instruction::Xor> m_Xor(const LHS &L,
- const RHS &R) {
+inline BinaryOp_match<LHS, RHS, Instruction::Xor>
+m_Xor(const LHS &L, const RHS &R) {
return BinaryOp_match<LHS, RHS, Instruction::Xor>(L, R);
}
template<typename LHS, typename RHS>
-inline BinaryOp_match<LHS, RHS, Instruction::Shl> m_Shl(const LHS &L,
- const RHS &R) {
+inline BinaryOp_match<LHS, RHS, Instruction::Shl>
+m_Shl(const LHS &L, const RHS &R) {
return BinaryOp_match<LHS, RHS, Instruction::Shl>(L, R);
}
template<typename LHS, typename RHS>
-inline BinaryOp_match<LHS, RHS, Instruction::LShr> m_LShr(const LHS &L,
- const RHS &R) {
+inline BinaryOp_match<LHS, RHS, Instruction::LShr>
+m_LShr(const LHS &L, const RHS &R) {
return BinaryOp_match<LHS, RHS, Instruction::LShr>(L, R);
}
template<typename LHS, typename RHS>
-inline BinaryOp_match<LHS, RHS, Instruction::AShr> m_AShr(const LHS &L,
- const RHS &R) {
+inline BinaryOp_match<LHS, RHS, Instruction::AShr>
+m_AShr(const LHS &L, const RHS &R) {
return BinaryOp_match<LHS, RHS, Instruction::AShr>(L, R);
}
//===----------------------------------------------------------------------===//
-// Matchers for either AShr or LShr .. for convenience
+// Class that matches two different binary ops.
//
-template<typename LHS_t, typename RHS_t, typename ConcreteTy = BinaryOperator>
-struct Shr_match {
+template<typename LHS_t, typename RHS_t, unsigned Opc1, unsigned Opc2>
+struct BinOp2_match {
LHS_t L;
RHS_t R;
- Shr_match(const LHS_t &LHS, const RHS_t &RHS) : L(LHS), R(RHS) {}
+ BinOp2_match(const LHS_t &LHS, const RHS_t &RHS) : L(LHS), R(RHS) {}
template<typename OpTy>
bool match(OpTy *V) {
- if (V->getValueID() == Value::InstructionVal + Instruction::LShr ||
- V->getValueID() == Value::InstructionVal + Instruction::AShr) {
- ConcreteTy *I = cast<ConcreteTy>(V);
- return (I->getOpcode() == Instruction::AShr ||
- I->getOpcode() == Instruction::LShr) &&
- L.match(I->getOperand(0)) &&
- R.match(I->getOperand(1));
+ if (V->getValueID() == Value::InstructionVal + Opc1 ||
+ V->getValueID() == Value::InstructionVal + Opc2) {
+ BinaryOperator *I = cast<BinaryOperator>(V);
+ return L.match(I->getOperand(0)) && R.match(I->getOperand(1));
}
if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V))
- return (CE->getOpcode() == Instruction::LShr ||
- CE->getOpcode() == Instruction::AShr) &&
- L.match(CE->getOperand(0)) &&
- R.match(CE->getOperand(1));
+ return (CE->getOpcode() == Opc1 || CE->getOpcode() == Opc2) &&
+ L.match(CE->getOperand(0)) && R.match(CE->getOperand(1));
return false;
}
};
+/// m_Shr - Matches LShr or AShr.
template<typename LHS, typename RHS>
-inline Shr_match<LHS, RHS> m_Shr(const LHS &L, const RHS &R) {
- return Shr_match<LHS, RHS>(L, R);
+inline BinOp2_match<LHS, RHS, Instruction::LShr, Instruction::AShr>
+m_Shr(const LHS &L, const RHS &R) {
+ return BinOp2_match<LHS, RHS, Instruction::LShr, Instruction::AShr>(L, R);
+}
+
+/// m_LogicalShift - Matches LShr or Shl.
+template<typename LHS, typename RHS>
+inline BinOp2_match<LHS, RHS, Instruction::LShr, Instruction::Shl>
+m_LogicalShift(const LHS &L, const RHS &R) {
+ return BinOp2_match<LHS, RHS, Instruction::LShr, Instruction::Shl>(L, R);
+}
+
+/// m_IDiv - Matches UDiv and SDiv.
+template<typename LHS, typename RHS>
+inline BinOp2_match<LHS, RHS, Instruction::SDiv, Instruction::UDiv>
+m_IDiv(const LHS &L, const RHS &R) {
+ return BinOp2_match<LHS, RHS, Instruction::SDiv, Instruction::UDiv>(L, R);
}
//===----------------------------------------------------------------------===//
-// Matchers for binary classes
+// Class that matches exact binary ops.
//
+template<typename SubPattern_t>
+struct Exact_match {
+ SubPattern_t SubPattern;
-template<typename LHS_t, typename RHS_t, typename Class, typename OpcType>
-struct BinaryOpClass_match {
- OpcType *Opcode;
- LHS_t L;
- RHS_t R;
-
- BinaryOpClass_match(OpcType &Op, const LHS_t &LHS,
- const RHS_t &RHS)
- : Opcode(&Op), L(LHS), R(RHS) {}
- BinaryOpClass_match(const LHS_t &LHS, const RHS_t &RHS)
- : Opcode(0), L(LHS), R(RHS) {}
+ Exact_match(const SubPattern_t &SP) : SubPattern(SP) {}
template<typename OpTy>
bool match(OpTy *V) {
- if (Class *I = dyn_cast<Class>(V))
- if (L.match(I->getOperand(0)) &&
- R.match(I->getOperand(1))) {
- if (Opcode)
- *Opcode = I->getOpcode();
- return true;
- }
-#if 0 // Doesn't handle constantexprs yet!
- if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V))
- return CE->getOpcode() == Opcode && L.match(CE->getOperand(0)) &&
- R.match(CE->getOperand(1));
-#endif
+ if (PossiblyExactOperator *PEO = dyn_cast<PossiblyExactOperator>(V))
+ return PEO->isExact() && SubPattern.match(V);
return false;
}
};
-template<typename LHS, typename RHS>
-inline BinaryOpClass_match<LHS, RHS, BinaryOperator, Instruction::BinaryOps>
-m_Shift(Instruction::BinaryOps &Op, const LHS &L, const RHS &R) {
- return BinaryOpClass_match<LHS, RHS,
- BinaryOperator, Instruction::BinaryOps>(Op, L, R);
-}
-
-template<typename LHS, typename RHS>
-inline BinaryOpClass_match<LHS, RHS, BinaryOperator, Instruction::BinaryOps>
-m_Shift(const LHS &L, const RHS &R) {
- return BinaryOpClass_match<LHS, RHS,
- BinaryOperator, Instruction::BinaryOps>(L, R);
-}
+template<typename T>
+inline Exact_match<T> m_Exact(const T &SubPattern) { return SubPattern; }
//===----------------------------------------------------------------------===//
// Matchers for CmpInst classes
LHS_t L;
RHS_t R;
- CmpClass_match(PredicateTy &Pred, const LHS_t &LHS,
- const RHS_t &RHS)
+ CmpClass_match(PredicateTy &Pred, const LHS_t &LHS, const RHS_t &RHS)
: Predicate(Pred), L(LHS), R(RHS) {}
template<typename OpTy>
bool match(OpTy *V) {
if (Class *I = dyn_cast<Class>(V))
- if (L.match(I->getOperand(0)) &&
- R.match(I->getOperand(1))) {
+ if (L.match(I->getOperand(0)) && R.match(I->getOperand(1))) {
Predicate = I->getPredicate();
return true;
}
}
/// m_SelectCst - This matches a select of two constants, e.g.:
-/// m_SelectCst(m_Value(V), -1, 0)
+/// m_SelectCst<-1, 0>(m_Value(V))
template<int64_t L, int64_t R, typename Cond>
-inline SelectClass_match<Cond, constantint_ty<L>, constantint_ty<R> >
+inline SelectClass_match<Cond, constantint_match<L>, constantint_match<R> >
m_SelectCst(const Cond &C) {
- return SelectClass_match<Cond, constantint_ty<L>,
- constantint_ty<R> >(C, m_ConstantInt<L>(),
- m_ConstantInt<R>());
+ return m_Select(C, m_ConstantInt<L>(), m_ConstantInt<R>());
}
template<typename OpTy>
bool match(OpTy *V) {
- if (CastInst *I = dyn_cast<CastInst>(V))
- return I->getOpcode() == Opcode && Op.match(I->getOperand(0));
- if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V))
- return CE->getOpcode() == Opcode && Op.match(CE->getOperand(0));
+ if (Operator *O = dyn_cast<Operator>(V))
+ return O->getOpcode() == Opcode && Op.match(O->getOperand(0));
return false;
}
};
+/// m_BitCast
+template<typename OpTy>
+inline CastClass_match<OpTy, Instruction::BitCast>
+m_BitCast(const OpTy &Op) {
+ return CastClass_match<OpTy, Instruction::BitCast>(Op);
+}
+
/// m_PtrToInt
template<typename OpTy>
inline CastClass_match<OpTy, Instruction::PtrToInt>
m_Trunc(const OpTy &Op) {
return CastClass_match<OpTy, Instruction::Trunc>(Op);
}
-
+
+/// m_SExt
+template<typename OpTy>
+inline CastClass_match<OpTy, Instruction::SExt>
+m_SExt(const OpTy &Op) {
+ return CastClass_match<OpTy, Instruction::SExt>(Op);
+}
+
+/// m_ZExt
+template<typename OpTy>
+inline CastClass_match<OpTy, Instruction::ZExt>
+m_ZExt(const OpTy &Op) {
+ return CastClass_match<OpTy, Instruction::ZExt>(Op);
+}
+
//===----------------------------------------------------------------------===//
// Matchers for unary operators
template<typename OpTy>
bool match(OpTy *V) {
- if (Instruction *I = dyn_cast<Instruction>(V))
- if (I->getOpcode() == Instruction::Xor)
- return matchIfNot(I->getOperand(0), I->getOperand(1));
- if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V))
- if (CE->getOpcode() == Instruction::Xor)
- return matchIfNot(CE->getOperand(0), CE->getOperand(1));
- if (ConstantInt *CI = dyn_cast<ConstantInt>(V))
- return L.match(ConstantExpr::getNot(CI));
+ if (Operator *O = dyn_cast<Operator>(V))
+ if (O->getOpcode() == Instruction::Xor)
+ return matchIfNot(O->getOperand(0), O->getOperand(1));
return false;
}
private:
bool matchIfNot(Value *LHS, Value *RHS) {
- if (ConstantInt *CI = dyn_cast<ConstantInt>(RHS))
- return CI->isAllOnesValue() && L.match(LHS);
- if (ConstantInt *CI = dyn_cast<ConstantInt>(LHS))
- return CI->isAllOnesValue() && L.match(RHS);
- if (ConstantVector *CV = dyn_cast<ConstantVector>(RHS))
- return CV->isAllOnesValue() && L.match(LHS);
- if (ConstantVector *CV = dyn_cast<ConstantVector>(LHS))
- return CV->isAllOnesValue() && L.match(RHS);
- return false;
+ return (isa<ConstantInt>(RHS) || isa<ConstantDataVector>(RHS) ||
+ // FIXME: Remove CV.
+ isa<ConstantVector>(RHS)) &&
+ cast<Constant>(RHS)->isAllOnesValue() &&
+ L.match(LHS);
}
};
template<typename OpTy>
bool match(OpTy *V) {
- if (Instruction *I = dyn_cast<Instruction>(V))
- if (I->getOpcode() == Instruction::Sub)
- return matchIfNeg(I->getOperand(0), I->getOperand(1));
- if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V))
- if (CE->getOpcode() == Instruction::Sub)
- return matchIfNeg(CE->getOperand(0), CE->getOperand(1));
- if (ConstantInt *CI = dyn_cast<ConstantInt>(V))
- return L.match(ConstantExpr::getNeg(CI));
+ if (Operator *O = dyn_cast<Operator>(V))
+ if (O->getOpcode() == Instruction::Sub)
+ return matchIfNeg(O->getOperand(0), O->getOperand(1));
return false;
}
private:
bool matchIfNeg(Value *LHS, Value *RHS) {
- return LHS == ConstantFP::getZeroValueForNegation(LHS->getType()) &&
+ return ((isa<ConstantInt>(LHS) && cast<ConstantInt>(LHS)->isZero()) ||
+ isa<ConstantAggregateZero>(LHS)) &&
L.match(RHS);
}
};
+/// m_Neg - Match an integer negate.
template<typename LHS>
inline neg_match<LHS> m_Neg(const LHS &L) { return L; }
template<typename OpTy>
bool match(OpTy *V) {
- if (Instruction *I = dyn_cast<Instruction>(V))
- if (I->getOpcode() == Instruction::FSub)
- return matchIfFNeg(I->getOperand(0), I->getOperand(1));
- if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V))
- if (CE->getOpcode() == Instruction::FSub)
- return matchIfFNeg(CE->getOperand(0), CE->getOperand(1));
- if (ConstantFP *CF = dyn_cast<ConstantFP>(V))
- return L.match(ConstantExpr::getFNeg(CF));
+ if (Operator *O = dyn_cast<Operator>(V))
+ if (O->getOpcode() == Instruction::FSub)
+ return matchIfFNeg(O->getOperand(0), O->getOperand(1));
return false;
}
private:
bool matchIfFNeg(Value *LHS, Value *RHS) {
- return LHS == ConstantFP::getZeroValueForNegation(LHS->getType()) &&
- L.match(RHS);
+ if (ConstantFP *C = dyn_cast<ConstantFP>(LHS))
+ return C->isNegativeZeroValue() && L.match(RHS);
+ return false;
}
};
+/// m_FNeg - Match a floating point negate.
template<typename LHS>
inline fneg_match<LHS> m_FNeg(const LHS &L) { return L; }
//===----------------------------------------------------------------------===//
-// Matchers for control flow
+// Matchers for control flow.
//
template<typename Cond_t>
template<typename OpTy>
bool match(OpTy *V) {
if (BranchInst *BI = dyn_cast<BranchInst>(V))
- if (BI->isConditional()) {
- if (Cond.match(BI->getCondition())) {
- T = BI->getSuccessor(0);
- F = BI->getSuccessor(1);
- return true;
- }
+ if (BI->isConditional() && Cond.match(BI->getCondition())) {
+ T = BI->getSuccessor(0);
+ F = BI->getSuccessor(1);
+ return true;
}
return false;
}
return brc_match<Cond_t>(C, T, F);
}
+
+//===----------------------------------------------------------------------===//
+// Matchers for max/min idioms, eg: "select (sgt x, y), x, y" -> smax(x,y).
+//
+
+template<typename LHS_t, typename RHS_t, typename Pred_t>
+struct MaxMin_match {
+ LHS_t L;
+ RHS_t R;
+
+ MaxMin_match(const LHS_t &LHS, const RHS_t &RHS)
+ : L(LHS), R(RHS) {}
+
+ template<typename OpTy>
+ bool match(OpTy *V) {
+ // Look for "(x pred y) ? x : y" or "(x pred y) ? y : x".
+ SelectInst *SI = dyn_cast<SelectInst>(V);
+ if (!SI)
+ return false;
+ ICmpInst *Cmp = dyn_cast<ICmpInst>(SI->getCondition());
+ if (!Cmp)
+ return false;
+ // At this point we have a select conditioned on a comparison. Check that
+ // it is the values returned by the select that are being compared.
+ Value *TrueVal = SI->getTrueValue();
+ Value *FalseVal = SI->getFalseValue();
+ Value *LHS = Cmp->getOperand(0);
+ Value *RHS = Cmp->getOperand(1);
+ if ((TrueVal != LHS || FalseVal != RHS) &&
+ (TrueVal != RHS || FalseVal != LHS))
+ return false;
+ ICmpInst::Predicate Pred = LHS == TrueVal ?
+ Cmp->getPredicate() : Cmp->getSwappedPredicate();
+ // Does "(x pred y) ? x : y" represent the desired max/min operation?
+ if (!Pred_t::match(Pred))
+ return false;
+ // It does! Bind the operands.
+ return L.match(LHS) && R.match(RHS);
+ }
+};
+
+/// smax_pred_ty - Helper class for identifying signed max predicates.
+struct smax_pred_ty {
+ static bool match(ICmpInst::Predicate Pred) {
+ return Pred == CmpInst::ICMP_SGT || Pred == CmpInst::ICMP_SGE;
+ }
+};
+
+/// smin_pred_ty - Helper class for identifying signed min predicates.
+struct smin_pred_ty {
+ static bool match(ICmpInst::Predicate Pred) {
+ return Pred == CmpInst::ICMP_SLT || Pred == CmpInst::ICMP_SLE;
+ }
+};
+
+/// umax_pred_ty - Helper class for identifying unsigned max predicates.
+struct umax_pred_ty {
+ static bool match(ICmpInst::Predicate Pred) {
+ return Pred == CmpInst::ICMP_UGT || Pred == CmpInst::ICMP_UGE;
+ }
+};
+
+/// umin_pred_ty - Helper class for identifying unsigned min predicates.
+struct umin_pred_ty {
+ static bool match(ICmpInst::Predicate Pred) {
+ return Pred == CmpInst::ICMP_ULT || Pred == CmpInst::ICMP_ULE;
+ }
+};
+
+template<typename LHS, typename RHS>
+inline MaxMin_match<LHS, RHS, smax_pred_ty>
+m_SMax(const LHS &L, const RHS &R) {
+ return MaxMin_match<LHS, RHS, smax_pred_ty>(L, R);
+}
+
+template<typename LHS, typename RHS>
+inline MaxMin_match<LHS, RHS, smin_pred_ty>
+m_SMin(const LHS &L, const RHS &R) {
+ return MaxMin_match<LHS, RHS, smin_pred_ty>(L, R);
+}
+
+template<typename LHS, typename RHS>
+inline MaxMin_match<LHS, RHS, umax_pred_ty>
+m_UMax(const LHS &L, const RHS &R) {
+ return MaxMin_match<LHS, RHS, umax_pred_ty>(L, R);
+}
+
+template<typename LHS, typename RHS>
+inline MaxMin_match<LHS, RHS, umin_pred_ty>
+m_UMin(const LHS &L, const RHS &R) {
+ return MaxMin_match<LHS, RHS, umin_pred_ty>(L, R);
+}
+
} // end namespace PatternMatch
} // end namespace llvm
projects / oota-llvm.git / blobdiff