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Add support to cast from a bool type

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Add support for boolean constants
add getClassB method


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5034 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2002-12-15 08:02:15 +00:00
parent d909683591
commit 6b993ccfe5
2 changed files with 24 additions and 12 deletions
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18
lib/Target/X86/InstSelectSimple.cpp
View File

@ -273,6 +273,12 @@ static inline TypeClass getClass(const Type *Ty) {
}
}
// getClassB - Just like getClass, but treat boolean values as bytes.
static inline TypeClass getClassB(const Type *Ty) {
if (Ty == Type::BoolTy) return cByte;
return getClass(Ty);
}
/// copyConstantToRegister - Output the instructions required to put the
/// specified constant into the specified register.
@ -292,14 +298,16 @@ void ISel::copyConstantToRegister(Constant *C, unsigned R,
}
if (C->getType()->isIntegral()) {
unsigned Class = getClass(C->getType());
unsigned Class = getClassB(C->getType());
assert(Class != 3 && "Type not handled yet!");
static const unsigned IntegralOpcodeTab[] = {
X86::MOVir8, X86::MOVir16, X86::MOVir32
};
if (C->getType()->isSigned()) {
if (C->getType() == Type::BoolTy) {
BMI(MBB, IP, X86::MOVir8, 1, R).addZImm(C == ConstantBool::True);
} else if (C->getType()->isSigned()) {
ConstantSInt *CSI = cast<ConstantSInt>(C);
BMI(MBB, IP, IntegralOpcodeTab[Class], 1, R).addSImm(CSI->getValue());
} else {
@ -348,9 +356,7 @@ void ISel::SelectPHINodes() {
while ((*PI)->getOpcode() == X86::PHI) ++PI;
MI->addRegOperand(getReg(PN->getIncomingValue(i), PredMBB, PI));
// FIXME: Pass in the MachineBasicBlocks instead of the basic blocks...
MI->addPCDispOperand(PN->getIncomingBlock(i)); // PredMBB
MI->addMachineBasicBlockOperand(PredMBB);
}
}
}
@ -878,7 +884,7 @@ ISel::visitCastInst (CastInst &CI)
// 2) Implement casts between values of the same type class (as determined
// by getClass) by using a register-to-register move.
unsigned srcClass = sourceType == Type::BoolTy ? cByte : getClass(sourceType);
unsigned srcClass = getClassB(sourceType);
unsigned targClass = getClass (targetType);
static const unsigned regRegMove[] = {
X86::MOVrr8, X86::MOVrr16, X86::MOVrr32

18
lib/Target/X86/X86ISelSimple.cpp
View File

@ -273,6 +273,12 @@ static inline TypeClass getClass(const Type *Ty) {
}
}
// getClassB - Just like getClass, but treat boolean values as bytes.
static inline TypeClass getClassB(const Type *Ty) {
if (Ty == Type::BoolTy) return cByte;
return getClass(Ty);
}
/// copyConstantToRegister - Output the instructions required to put the
/// specified constant into the specified register.
@ -292,14 +298,16 @@ void ISel::copyConstantToRegister(Constant *C, unsigned R,
}
if (C->getType()->isIntegral()) {
unsigned Class = getClass(C->getType());
unsigned Class = getClassB(C->getType());
assert(Class != 3 && "Type not handled yet!");
static const unsigned IntegralOpcodeTab[] = {
X86::MOVir8, X86::MOVir16, X86::MOVir32
};
if (C->getType()->isSigned()) {
if (C->getType() == Type::BoolTy) {
BMI(MBB, IP, X86::MOVir8, 1, R).addZImm(C == ConstantBool::True);
} else if (C->getType()->isSigned()) {
ConstantSInt *CSI = cast<ConstantSInt>(C);
BMI(MBB, IP, IntegralOpcodeTab[Class], 1, R).addSImm(CSI->getValue());
} else {
@ -348,9 +356,7 @@ void ISel::SelectPHINodes() {
while ((*PI)->getOpcode() == X86::PHI) ++PI;
MI->addRegOperand(getReg(PN->getIncomingValue(i), PredMBB, PI));
// FIXME: Pass in the MachineBasicBlocks instead of the basic blocks...
MI->addPCDispOperand(PN->getIncomingBlock(i)); // PredMBB
MI->addMachineBasicBlockOperand(PredMBB);
}
}
}
@ -878,7 +884,7 @@ ISel::visitCastInst (CastInst &CI)
// 2) Implement casts between values of the same type class (as determined
// by getClass) by using a register-to-register move.
unsigned srcClass = sourceType == Type::BoolTy ? cByte : getClass(sourceType);
unsigned srcClass = getClassB(sourceType);
unsigned targClass = getClass (targetType);
static const unsigned regRegMove[] = {
X86::MOVrr8, X86::MOVrr16, X86::MOVrr32