//===----------------------------------------------------------------------===//
#include "InstPrinter/WebAssemblyInstPrinter.h"
+#include "MCTargetDesc/WebAssemblyMCTargetDesc.h"
#include "WebAssembly.h"
+#include "WebAssemblyMachineFunctionInfo.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCInstrInfo.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FormattedStream.h"
#include "llvm/Target/TargetRegisterInfo.h"
-#include <cctype>
using namespace llvm;
#define DEBUG_TYPE "asm-printer"
void WebAssemblyInstPrinter::printRegName(raw_ostream &OS,
unsigned RegNo) const {
- // FIXME: Revisit whether we actually print the get_local explicitly.
- OS << "(get_local " << RegNo << ")";
+ assert(RegNo != WebAssemblyFunctionInfo::UnusedReg);
+ // Note that there's an implicit get_local/set_local here!
+ OS << "$" << RegNo;
}
void WebAssemblyInstPrinter::printInst(const MCInst *MI, raw_ostream &OS,
StringRef Annot,
- const MCSubtargetInfo &STI) {
+ const MCSubtargetInfo & /*STI*/) {
+ // Print the instruction (this uses the AsmStrings from the .td files).
printInstruction(MI, OS);
+ // Print any additional variadic operands.
const MCInstrDesc &Desc = MII.get(MI->getOpcode());
if (Desc.isVariadic())
- for (unsigned i = Desc.getNumOperands(), e = MI->getNumOperands(); i < e;
- ++i) {
- OS << ", ";
+ for (auto i = Desc.getNumOperands(), e = MI->getNumOperands(); i < e; ++i) {
+ if (i != 0)
+ OS << ", ";
printOperand(MI, i, OS);
}
+ // Print any added annotation.
printAnnotation(OS, Annot);
-
- unsigned NumDefs = MII.get(MI->getOpcode()).getNumDefs();
- assert(NumDefs <= 1 &&
- "Instructions with multiple result values not implemented");
-
- // FIXME: Revisit whether we actually print the set_local explicitly.
- if (NumDefs != 0)
- OS << "\n"
- "\t" "set_local " << MI->getOperand(0).getReg() << ", $pop";
}
static std::string toString(const APFloat &FP) {
raw_ostream &O) {
const MCOperand &Op = MI->getOperand(OpNo);
if (Op.isReg()) {
- if (OpNo < MII.get(MI->getOpcode()).getNumDefs())
- O << "$push";
+ unsigned WAReg = Op.getReg();
+ if (int(WAReg) >= 0)
+ printRegName(O, WAReg);
+ else if (OpNo >= MII.get(MI->getOpcode()).getNumDefs())
+ O << "$pop" << (WAReg & INT32_MAX);
+ else if (WAReg != WebAssemblyFunctionInfo::UnusedReg)
+ O << "$push" << (WAReg & INT32_MAX);
else
- printRegName(O, Op.getReg());
- } else if (Op.isImm())
- O << Op.getImm();
- else if (Op.isFPImm())
+ O << "$discard";
+ // Add a '=' suffix if this is a def.
+ if (OpNo < MII.get(MI->getOpcode()).getNumDefs())
+ O << '=';
+ } else if (Op.isImm()) {
+ switch (MI->getOpcode()) {
+ case WebAssembly::PARAM:
+ case WebAssembly::RESULT:
+ case WebAssembly::LOCAL:
+ O << WebAssembly::TypeToString(MVT::SimpleValueType(Op.getImm()));
+ break;
+ default:
+ O << Op.getImm();
+ break;
+ }
+ } else if (Op.isFPImm())
O << toString(APFloat(Op.getFPImm()));
else {
assert(Op.isExpr() && "unknown operand kind in printOperand");
Op.getExpr()->print(O, &MAI);
}
}
+
+const char *llvm::WebAssembly::TypeToString(MVT Ty) {
+ switch (Ty.SimpleTy) {
+ case MVT::i32:
+ return "i32";
+ case MVT::i64:
+ return "i64";
+ case MVT::f32:
+ return "f32";
+ case MVT::f64:
+ return "f64";
+ default:
+ llvm_unreachable("unsupported type");
+ }
+}