bool X86TargetLowering::ExpandInlineAsm(CallInst *CI) const {
InlineAsm *IA = cast<InlineAsm>(CI->getCalledValue());
- std::vector<InlineAsm::ConstraintInfo> Constraints = IA->ParseConstraints();
+ InlineAsm::ConstraintInfoVector Constraints = IA->ParseConstraints();
std::string AsmStr = IA->getAsmString();
X86TargetLowering::getConstraintType(const std::string &Constraint) const {
if (Constraint.size() == 1) {
switch (Constraint[0]) {
- case 'A':
- return C_Register;
- case 'f':
- case 'r':
case 'R':
- case 'l':
case 'q':
case 'Q':
- case 'x':
+ case 'f':
+ case 't':
+ case 'u':
case 'y':
+ case 'x':
case 'Y':
return C_RegisterClass;
+ case 'a':
+ case 'b':
+ case 'c':
+ case 'd':
+ case 'S':
+ case 'D':
+ case 'A':
+ return C_Register;
+ case 'I':
+ case 'J':
+ case 'K':
+ case 'L':
+ case 'M':
+ case 'N':
+ case 'G':
+ case 'C':
case 'e':
case 'Z':
return C_Other;
return TargetLowering::getConstraintType(Constraint);
}
-/// Examine constraint type and operand type and determine a weight value,
-/// where: -1 = invalid match, and 0 = so-so match to 3 = good match.
+/// Examine constraint type and operand type and determine a weight value.
/// This object must already have been set up with the operand type
/// and the current alternative constraint selected.
-int X86TargetLowering::getSingleConstraintMatchWeight(
+TargetLowering::ConstraintWeight
+ X86TargetLowering::getSingleConstraintMatchWeight(
AsmOperandInfo &info, const char *constraint) const {
- int weight = -1;
+ ConstraintWeight weight = CW_Invalid;
Value *CallOperandVal = info.CallOperandVal;
// If we don't have a value, we can't do a match,
// but allow it at the lowest weight.
if (CallOperandVal == NULL)
- return 0;
+ return CW_Default;
+ const Type *type = CallOperandVal->getType();
// Look at the constraint type.
switch (*constraint) {
default:
- return TargetLowering::getSingleConstraintMatchWeight(info, constraint);
+ weight = TargetLowering::getSingleConstraintMatchWeight(info, constraint);
+ case 'R':
+ case 'q':
+ case 'Q':
+ case 'a':
+ case 'b':
+ case 'c':
+ case 'd':
+ case 'S':
+ case 'D':
+ case 'A':
+ if (CallOperandVal->getType()->isIntegerTy())
+ weight = CW_SpecificReg;
+ break;
+ case 'f':
+ case 't':
+ case 'u':
+ if (type->isFloatingPointTy())
+ weight = CW_SpecificReg;
+ break;
+ case 'y':
+ if (type->isX86_MMXTy() && !DisableMMX && Subtarget->hasMMX())
+ weight = CW_SpecificReg;
+ break;
+ case 'x':
+ case 'Y':
+ if ((type->getPrimitiveSizeInBits() == 128) && Subtarget->hasSSE1())
+ weight = CW_Register;
break;
case 'I':
if (ConstantInt *C = dyn_cast<ConstantInt>(info.CallOperandVal)) {
if (C->getZExtValue() <= 31)
- weight = 3;
+ weight = CW_Constant;
+ }
+ break;
+ case 'J':
+ if (ConstantInt *C = dyn_cast<ConstantInt>(CallOperandVal)) {
+ if (C->getZExtValue() <= 63)
+ weight = CW_Constant;
+ }
+ break;
+ case 'K':
+ if (ConstantInt *C = dyn_cast<ConstantInt>(CallOperandVal)) {
+ if ((C->getSExtValue() >= -0x80) && (C->getSExtValue() <= 0x7f))
+ weight = CW_Constant;
+ }
+ break;
+ case 'L':
+ if (ConstantInt *C = dyn_cast<ConstantInt>(CallOperandVal)) {
+ if ((C->getZExtValue() == 0xff) || (C->getZExtValue() == 0xffff))
+ weight = CW_Constant;
+ }
+ break;
+ case 'M':
+ if (ConstantInt *C = dyn_cast<ConstantInt>(CallOperandVal)) {
+ if (C->getZExtValue() <= 3)
+ weight = CW_Constant;
+ }
+ break;
+ case 'N':
+ if (ConstantInt *C = dyn_cast<ConstantInt>(CallOperandVal)) {
+ if (C->getZExtValue() <= 0xff)
+ weight = CW_Constant;
+ }
+ break;
+ case 'G':
+ case 'C':
+ if (dyn_cast<ConstantFP>(CallOperandVal)) {
+ weight = CW_Constant;
+ }
+ break;
+ case 'e':
+ if (ConstantInt *C = dyn_cast<ConstantInt>(CallOperandVal)) {
+ if ((C->getSExtValue() >= -0x80000000LL) &&
+ (C->getSExtValue() <= 0x7fffffffLL))
+ weight = CW_Constant;
+ }
+ break;
+ case 'Z':
+ if (ConstantInt *C = dyn_cast<ConstantInt>(CallOperandVal)) {
+ if (C->getZExtValue() <= 0xffffffff)
+ weight = CW_Constant;
}
break;
- // etc.
}
return weight;
}