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For PR950:

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Make necessary changes to support DIV -> [SUF]Div. This changes llvm to
have three division instructions: signed, unsigned, floating point. The
bytecode and assembler are bacwards compatible, however.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31195 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer
2006-10-26 06:15:43 +00:00
parent 7043d00750
commit 1628cec4d7
32 changed files with 3086 additions and 1944 deletions
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30
lib/VMCore/Constants.cpp
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@@ -75,7 +75,9 @@ bool Constant::canTrap() const {
switch (CE->getOpcode()) {
default:
return false;
case Instruction::Div:
case Instruction::UDiv:
case Instruction::SDiv:
case Instruction::FDiv:
case Instruction::Rem:
// Div and rem can trap if the RHS is not known to be non-zero.
if (!isa<ConstantInt>(getOperand(1)) || getOperand(1)->isNullValue())
@@ -446,8 +448,14 @@ Constant *ConstantExpr::getSub(Constant *C1, Constant *C2) {
Constant *ConstantExpr::getMul(Constant *C1, Constant *C2) {
return get(Instruction::Mul, C1, C2);
}
Constant *ConstantExpr::getDiv(Constant *C1, Constant *C2) {
return get(Instruction::Div, C1, C2);
Constant *ConstantExpr::getUDiv(Constant *C1, Constant *C2) {
return get(Instruction::UDiv, C1, C2);
}
Constant *ConstantExpr::getSDiv(Constant *C1, Constant *C2) {
return get(Instruction::SDiv, C1, C2);
}
Constant *ConstantExpr::getFDiv(Constant *C1, Constant *C2) {
return get(Instruction::FDiv, C1, C2);
}
Constant *ConstantExpr::getRem(Constant *C1, Constant *C2) {
return get(Instruction::Rem, C1, C2);
@@ -1437,13 +1445,27 @@ Constant *ConstantExpr::get(unsigned Opcode, Constant *C1, Constant *C2) {
#ifndef NDEBUG
switch (Opcode) {
case Instruction::Add: case Instruction::Sub:
case Instruction::Mul: case Instruction::Div:
case Instruction::Mul:
case Instruction::Rem:
assert(C1->getType() == C2->getType() && "Op types should be identical!");
assert((C1->getType()->isInteger() || C1->getType()->isFloatingPoint() ||
isa<PackedType>(C1->getType())) &&
"Tried to create an arithmetic operation on a non-arithmetic type!");
break;
case Instruction::UDiv:
case Instruction::SDiv:
assert(C1->getType() == C2->getType() && "Op types should be identical!");
assert((C1->getType()->isInteger() || (isa<PackedType>(C1->getType()) &&
cast<PackedType>(C1->getType())->getElementType()->isInteger())) &&
"Tried to create an arithmetic operation on a non-arithmetic type!");
break;
case Instruction::FDiv:
assert(C1->getType() == C2->getType() && "Op types should be identical!");
assert((C1->getType()->isFloatingPoint() || (isa<PackedType>(C1->getType())
&& cast<PackedType>(C1->getType())->getElementType()->isFloatingPoint()))
&& "Tried to create an arithmetic operation on a non-arithmetic type!");
break;
case Instruction::And:
case Instruction::Or:
case Instruction::Xor: