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llvm-mc/AsmParser: Allow .td users to redefine the names of the methods to call

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on target specific operands for testing class membership and converting to
MCInst operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78597 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Dunbar 2009-08-10 21:00:45 +00:00
parent e74f3c0ce6
commit 5c468e3d70
3 changed files with 40 additions and 10 deletions
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19
include/llvm/Target/Target.td
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@ -290,14 +290,25 @@ def unknown;
/// match a subset of some other class, in which case the super class field
/// should be defined.
class AsmOperandClass {
/// The name to use for this class, this should be usable as an enum value,
/// and will be used to generated the names for the methods to test whether a
/// particular target specific operand matches this class, and the method to
/// convert an operand of this class into an MCInst operand.
/// The name to use for this class, which should be usable as an enum value.
string Name = ?;
/// The super class of this operand.
AsmOperandClass SuperClass = ?;
/// The name of the method on the target specific operand to call to test
/// whether the operand is an instance of this class. If not set, this will
/// default to "isFoo", where Foo is the AsmOperandClass name. The method
/// signature should be:
/// bool isFoo() const;
string PredicateMethod = ?;
/// The name of the method on the target specific operand to call to add the
/// target specific operand to an MCInst. If not set, this will default to
/// "addFooOperands", where Foo is the AsmOperandClass name. The method
/// signature should be:
/// void addFooOperands(MCInst &Inst, unsigned N) const;
string RenderMethod = ?;
}
def ImmAsmOperand : AsmOperandClass {

8
lib/Target/X86/AsmParser/X86AsmParser.cpp
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@ -154,23 +154,23 @@ struct X86Operand {
bool isReg() const { return Kind == Register; }
void addRegOperands(MCInst &Inst, unsigned N) {
void addRegOperands(MCInst &Inst, unsigned N) const {
assert(N == 1 && "Invalid number of operands!");
Inst.addOperand(MCOperand::CreateReg(getReg()));
}
void addImmOperands(MCInst &Inst, unsigned N) {
void addImmOperands(MCInst &Inst, unsigned N) const {
assert(N == 1 && "Invalid number of operands!");
Inst.addOperand(MCOperand::CreateMCValue(getImm()));
}
void addImmSExt8Operands(MCInst &Inst, unsigned N) {
void addImmSExt8Operands(MCInst &Inst, unsigned N) const {
// FIXME: Support user customization of the render method.
assert(N == 1 && "Invalid number of operands!");
Inst.addOperand(MCOperand::CreateMCValue(getImm()));
}
void addMemOperands(MCInst &Inst, unsigned N) {
void addMemOperands(MCInst &Inst, unsigned N) const {
assert((N == 4 || N == 5) && "Invalid number of operands!");
Inst.addOperand(MCOperand::CreateReg(getMemBaseReg()));

23
utils/TableGen/AsmMatcherEmitter.cpp
View File

@ -589,8 +589,27 @@ void AsmMatcherInfo::BuildInfo(CodeGenTarget &Target) {
CI->ClassName = (*it)->getValueAsString("Name");
CI->Name = "MCK_" + CI->ClassName;
CI->ValueName = (*it)->getName();
CI->PredicateMethod = "is" + CI->ClassName;
CI->RenderMethod = "add" + CI->ClassName + "Operands";
// Get or construct the predicate method name.
Init *PMName = (*it)->getValueInit("PredicateMethod");
if (StringInit *SI = dynamic_cast<StringInit*>(PMName)) {
CI->PredicateMethod = SI->getValue();
} else {
assert(dynamic_cast<UnsetInit*>(PMName) &&
"Unexpected PredicateMethod field!");
CI->PredicateMethod = "is" + CI->ClassName;
}
// Get or construct the render method name.
Init *RMName = (*it)->getValueInit("RenderMethod");
if (StringInit *SI = dynamic_cast<StringInit*>(RMName)) {
CI->RenderMethod = SI->getValue();
} else {
assert(dynamic_cast<UnsetInit*>(RMName) &&
"Unexpected RenderMethod field!");
CI->RenderMethod = "add" + CI->ClassName + "Operands";
}
AsmOperandClasses[*it] = CI;
Classes.push_back(CI);
}