enum {
PHI = 0,
INLINEASM = 1,
- DBG_LABEL = 2,
+ PROLOG_LABEL = 2,
EH_LABEL = 3,
GC_LABEL = 4,
/// used between instruction selection and MachineInstr creation, before
/// virtual registers have been created for all the instructions, and it's
/// only needed in cases where the register classes implied by the
- /// instructions are insufficient. The actual MachineInstrs to perform
- /// the copy are emitted with the TargetInstrInfo::copyRegToReg hook.
+ /// instructions are insufficient. It is emitted as a COPY MachineInstr.
COPY_TO_REGCLASS = 10,
/// DBG_VALUE - a mapping of the llvm.dbg.value intrinsic
/// REG_SEQUENCE - This variadic instruction is used to form a register that
/// represent a consecutive sequence of sub-registers. It's used as register
/// coalescing / allocation aid and must be eliminated before code emission.
+ // In SDNode form, the first operand encodes the register class created by
+ // the REG_SEQUENCE, while each subsequent pair names a vreg + subreg index
+ // pair. Once it has been lowered to a MachineInstr, the regclass operand
+ // is no longer present.
/// e.g. v1027 = REG_SEQUENCE v1024, 3, v1025, 4, v1026, 5
/// After register coalescing references of v1024 should be replace with
/// v1027:3, v1025 with v1027:4, etc.
- REG_SEQUENCE = 12
+ REG_SEQUENCE = 12,
+
+ /// COPY - Target-independent register copy. This instruction can also be
+ /// used to copy between subregisters of virtual registers.
+ COPY = 13,
+
+ /// BUNDLE - This instruction represents an instruction bundle. Instructions
+ /// which immediately follow a BUNDLE instruction which are marked with
+ /// 'InsideBundle' flag are inside the bundle.
+ BUNDLE = 14,
+
+ /// Lifetime markers.
+ LIFETIME_START = 15,
+ LIFETIME_END = 16
};
} // end namespace TargetOpcode
} // end namespace llvm