[WebAssembly] Skeleton FastISel support
llvm-svn: 245860
diff --git a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
index 047ea90..8cf859c 100644
--- a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -1867,6 +1867,25 @@
return ResultReg;
}
+unsigned FastISel::fastEmitInst_f(unsigned MachineInstOpcode,
+ const TargetRegisterClass *RC,
+ const ConstantFP *FPImm) {
+ const MCInstrDesc &II = TII.get(MachineInstOpcode);
+
+ unsigned ResultReg = createResultReg(RC);
+
+ if (II.getNumDefs() >= 1)
+ BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, II, ResultReg)
+ .addFPImm(FPImm);
+ else {
+ BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, II)
+ .addFPImm(FPImm);
+ BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc,
+ TII.get(TargetOpcode::COPY), ResultReg).addReg(II.ImplicitDefs[0]);
+ }
+ return ResultReg;
+}
+
unsigned FastISel::fastEmitInst_rf(unsigned MachineInstOpcode,
const TargetRegisterClass *RC, unsigned Op0,
bool Op0IsKill, const ConstantFP *FPImm) {