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Even more passes being LLVMContext'd.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74781 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson
2009-07-03 19:42:02 +00:00
parent 715029478c
commit fa5cbd6d0f
9 changed files with 235 additions and 181 deletions
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40
lib/Transforms/Scalar/Reassociate.cpp
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@@ -27,6 +27,7 @@
#include "llvm/Function.h"
#include "llvm/Instructions.h"
#include "llvm/IntrinsicInst.h"
#include "llvm/LLVMContext.h"
#include "llvm/Pass.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/Support/CFG.h"
@@ -198,8 +199,9 @@ static BinaryOperator *isReassociableOp(Value *V, unsigned Opcode) {
/// LowerNegateToMultiply - Replace 0-X with X*-1.
///
static Instruction *LowerNegateToMultiply(Instruction *Neg,
std::map<AssertingVH<>, unsigned> &ValueRankMap) {
Constant *Cst = ConstantInt::getAllOnesValue(Neg->getType());
std::map<AssertingVH<>, unsigned> &ValueRankMap,
LLVMContext* Context) {
Constant *Cst = Context->getConstantIntAllOnesValue(Neg->getType());
Instruction *Res = BinaryOperator::CreateMul(Neg->getOperand(1), Cst, "",Neg);
ValueRankMap.erase(Neg);
@@ -263,11 +265,13 @@ void Reassociate::LinearizeExprTree(BinaryOperator *I,
// transform them into multiplies by -1 so they can be reassociated.
if (I->getOpcode() == Instruction::Mul) {
if (!LHSBO && LHS->hasOneUse() && BinaryOperator::isNeg(LHS)) {
LHS = LowerNegateToMultiply(cast<Instruction>(LHS), ValueRankMap);
LHS = LowerNegateToMultiply(cast<Instruction>(LHS),
ValueRankMap, Context);
LHSBO = isReassociableOp(LHS, Opcode);
}
if (!RHSBO && RHS->hasOneUse() && BinaryOperator::isNeg(RHS)) {
RHS = LowerNegateToMultiply(cast<Instruction>(RHS), ValueRankMap);
RHS = LowerNegateToMultiply(cast<Instruction>(RHS),
ValueRankMap, Context);
RHSBO = isReassociableOp(RHS, Opcode);
}
}
@@ -280,8 +284,8 @@ void Reassociate::LinearizeExprTree(BinaryOperator *I,
Ops.push_back(ValueEntry(getRank(RHS), RHS));
// Clear the leaves out.
I->setOperand(0, UndefValue::get(I->getType()));
I->setOperand(1, UndefValue::get(I->getType()));
I->setOperand(0, Context->getUndef(I->getType()));
I->setOperand(1, Context->getUndef(I->getType()));
return;
} else {
// Turn X+(Y+Z) -> (Y+Z)+X
@@ -316,7 +320,7 @@ void Reassociate::LinearizeExprTree(BinaryOperator *I,
Ops.push_back(ValueEntry(getRank(RHS), RHS));
// Clear the RHS leaf out.
I->setOperand(1, UndefValue::get(I->getType()));
I->setOperand(1, Context->getUndef(I->getType()));
}
// RewriteExprTree - Now that the operands for this expression tree are
@@ -453,15 +457,17 @@ static Instruction *BreakUpSubtract(Instruction *Sub,
/// by one, change this into a multiply by a constant to assist with further
/// reassociation.
static Instruction *ConvertShiftToMul(Instruction *Shl,
std::map<AssertingVH<>, unsigned> &ValueRankMap) {
std::map<AssertingVH<>, unsigned> &ValueRankMap,
LLVMContext* Context) {
// If an operand of this shift is a reassociable multiply, or if the shift
// is used by a reassociable multiply or add, turn into a multiply.
if (isReassociableOp(Shl->getOperand(0), Instruction::Mul) ||
(Shl->hasOneUse() &&
(isReassociableOp(Shl->use_back(), Instruction::Mul) ||
isReassociableOp(Shl->use_back(), Instruction::Add)))) {
Constant *MulCst = ConstantInt::get(Shl->getType(), 1);
MulCst = ConstantExpr::getShl(MulCst, cast<Constant>(Shl->getOperand(1)));
Constant *MulCst = Context->getConstantInt(Shl->getType(), 1);
MulCst =
Context->getConstantExprShl(MulCst, cast<Constant>(Shl->getOperand(1)));
Instruction *Mul = BinaryOperator::CreateMul(Shl->getOperand(0), MulCst,
"", Shl);
@@ -561,7 +567,7 @@ Value *Reassociate::OptimizeExpression(BinaryOperator *I,
if (Constant *V1 = dyn_cast<Constant>(Ops[Ops.size()-2].Op))
if (Constant *V2 = dyn_cast<Constant>(Ops.back().Op)) {
Ops.pop_back();
Ops.back().Op = ConstantExpr::get(Opcode, V1, V2);
Ops.back().Op = Context->getConstantExpr(Opcode, V1, V2);
return OptimizeExpression(I, Ops);
}
@@ -617,10 +623,10 @@ Value *Reassociate::OptimizeExpression(BinaryOperator *I,
if (FoundX != i) {
if (Opcode == Instruction::And) { // ...&X&~X = 0
++NumAnnihil;
return Constant::getNullValue(X->getType());
return Context->getNullValue(X->getType());
} else if (Opcode == Instruction::Or) { // ...|X|~X = -1
++NumAnnihil;
return ConstantInt::getAllOnesValue(X->getType());
return Context->getConstantIntAllOnesValue(X->getType());
}
}
}
@@ -639,7 +645,7 @@ Value *Reassociate::OptimizeExpression(BinaryOperator *I,
assert(Opcode == Instruction::Xor);
if (e == 2) {
++NumAnnihil;
return Constant::getNullValue(Ops[0].Op->getType());
return Context->getNullValue(Ops[0].Op->getType());
}
// ... X^X -> ...
Ops.erase(Ops.begin()+i, Ops.begin()+i+2);
@@ -664,7 +670,7 @@ Value *Reassociate::OptimizeExpression(BinaryOperator *I,
// Remove X and -X from the operand list.
if (Ops.size() == 2) {
++NumAnnihil;
return Constant::getNullValue(X->getType());
return Context->getNullValue(X->getType());
} else {
Ops.erase(Ops.begin()+i);
if (i < FoundX)
@@ -779,7 +785,7 @@ void Reassociate::ReassociateBB(BasicBlock *BB) {
Instruction *BI = BBI++;
if (BI->getOpcode() == Instruction::Shl &&
isa<ConstantInt>(BI->getOperand(1)))
if (Instruction *NI = ConvertShiftToMul(BI, ValueRankMap)) {
if (Instruction *NI = ConvertShiftToMul(BI, ValueRankMap, Context)) {
MadeChange = true;
BI = NI;
}
@@ -801,7 +807,7 @@ void Reassociate::ReassociateBB(BasicBlock *BB) {
if (isReassociableOp(BI->getOperand(1), Instruction::Mul) &&
(!BI->hasOneUse() ||
!isReassociableOp(BI->use_back(), Instruction::Mul))) {
BI = LowerNegateToMultiply(BI, ValueRankMap);
BI = LowerNegateToMultiply(BI, ValueRankMap, Context);
MadeChange = true;
}
}