mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-01-19 04:32:19 +00:00
57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
|
//===- InstrInfoEmitter.cpp - Generate a Instruction Set Desc. ------------===//
|
||
|
|
//
|
||
|
|
// This tablegen backend is responsible for emitting a description of the target
|
||
|
|
// instruction set for the code generator.
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
|
||
|
|
#include "InstrSelectorEmitter.h"
|
||
|
|
#include "Record.h"
|
||
|
|
|
||
|
|
NodeType::ArgResultTypes NodeType::Translate(Record *R) {
|
||
|
|
const std::string &Name = R->getName();
|
||
|
|
if (Name == "DNRT_void") return Void;
|
||
|
|
if (Name == "DNRT_val" || Name == "DNAT_val") return Val;
|
||
|
|
if (Name == "DNRT_arg0" || Name == "DNAT_arg0") return Arg0;
|
||
|
|
if (Name == "DNAT_ptr") return Ptr;
|
||
|
|
throw "Unknown DagNodeResult Type '" + Name + "'!";
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/// ProcessNodeTypes - Process all of the node types in the current
|
||
|
|
/// RecordKeeper, turning them into the more accessible NodeTypes data
|
||
|
|
/// structure.
|
||
|
|
///
|
||
|
|
void InstrSelectorEmitter::ProcessNodeTypes() {
|
||
|
|
std::vector<Record*> Nodes = Records.getAllDerivedDefinitions("DagNode");
|
||
|
|
|
||
|
|
for (unsigned i = 0, e = Nodes.size(); i != e; ++i) {
|
||
|
|
Record *Node = Nodes[i];
|
||
|
|
|
||
|
|
// Translate the return type...
|
||
|
|
NodeType::ArgResultTypes RetTy =
|
||
|
|
NodeType::Translate(Node->getValueAsDef("RetType"));
|
||
|
|
|
||
|
|
// Translate the arguments...
|
||
|
|
ListInit *Args = Node->getValueAsListInit("ArgTypes");
|
||
|
|
std::vector<NodeType::ArgResultTypes> ArgTypes;
|
||
|
|
|
||
|
|
for (unsigned a = 0, e = Args->getSize(); a != e; ++a)
|
||
|
|
if (DefInit *DI = dynamic_cast<DefInit*>(Args->getElement(a)))
|
||
|
|
ArgTypes.push_back(NodeType::Translate(DI->getDef()));
|
||
|
|
else
|
||
|
|
throw "In node " + Node->getName() + ", argument is not a Def!";
|
||
|
|
|
||
|
|
// Add the node type mapping now...
|
||
|
|
NodeTypes[Node] = NodeType(RetTy, ArgTypes);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void InstrSelectorEmitter::run(std::ostream &OS) {
|
||
|
|
// Type-check all of the node types to ensure we "understand" them.
|
||
|
|
ProcessNodeTypes();
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
}
|