/// MI-level Statepoint operands
///
/// Statepoint operands take the form:
-/// <num call arguments>, <call target>, [call arguments],
-/// <StackMaps::ConstantOp>, <flags>,
+/// <id>, <num patch bytes >, <num call arguments>, <call target>,
+/// [call arguments], <StackMaps::ConstantOp>, <calling convention>,
+/// <StackMaps::ConstantOp>, <statepoint flags>,
/// <StackMaps::ConstantOp>, <num other args>, [other args],
/// [gc values]
class StatepointOpers {
private:
+ // These values are aboolute offsets into the operands of the statepoint
+ // instruction.
+ enum { IDPos, NBytesPos, NCallArgsPos, CallTargetPos, MetaEnd };
+
+ // These values are relative offests from the start of the statepoint meta
+ // arguments (i.e. the end of the call arguments).
enum {
- NCallArgsPos = 0,
- CallTargetPos = 1
+ CCOffset = 1,
+ FlagsOffset = 3,
+ NumVMSArgsOffset = 5
};
public:
MI(MI) { }
/// Get starting index of non call related arguments
- /// (statepoint flags, vm state and gc state).
+ /// (calling convention, statepoint flags, vm state and gc state).
unsigned getVarIdx() const {
- return MI->getOperand(NCallArgsPos).getImm() + 2;
+ return MI->getOperand(NCallArgsPos).getImm() + MetaEnd;
}
- /// Returns the index of the operand containing the number of non-gc non-call
- /// arguments.
- unsigned getNumVMSArgsIdx() const {
- return getVarIdx() + 3;
- }
+ /// Return the ID for the given statepoint.
+ uint64_t getID() const { return MI->getOperand(IDPos).getImm(); }
- /// Returns the number of non-gc non-call arguments attached to the
- /// statepoint. Note that this is the number of arguments, not the number of
- /// operands required to represent those arguments.
- unsigned getNumVMSArgs() const {
- return MI->getOperand(getNumVMSArgsIdx()).getImm();
+ /// Return the number of patchable bytes the given statepoint should emit.
+ uint32_t getNumPatchBytes() const {
+ return MI->getOperand(NBytesPos).getImm();
}
/// Returns the target of the underlying call.
void emitConstantPoolEntries(MCStreamer &OS);
/// \brief Emit the callsite info for each stackmap/patchpoint intrinsic call.
- void emitCallsiteEntries(MCStreamer &OS, const TargetRegisterInfo *TRI);
+ void emitCallsiteEntries(MCStreamer &OS);
void print(raw_ostream &OS);
void debug() { print(dbgs()); }