diff options
Diffstat (limited to 'gnu/llvm/include/llvm/Target/TargetOpcodes.h')
-rw-r--r-- | gnu/llvm/include/llvm/Target/TargetOpcodes.h | 127 |
1 files changed, 112 insertions, 15 deletions
diff --git a/gnu/llvm/include/llvm/Target/TargetOpcodes.h b/gnu/llvm/include/llvm/Target/TargetOpcodes.h index 33df133a4d5..db37bdb6258 100644 --- a/gnu/llvm/include/llvm/Target/TargetOpcodes.h +++ b/gnu/llvm/include/llvm/Target/TargetOpcodes.h @@ -18,25 +18,122 @@ namespace llvm { /// Invariant opcodes: All instruction sets have these as their low opcodes. /// +/// Every instruction defined here must also appear in Target.td and the order +/// must be the same as in CodeGenTarget.cpp. +/// namespace TargetOpcode { enum { -#define HANDLE_TARGET_OPCODE(OPC) OPC, -#define HANDLE_TARGET_OPCODE_MARKER(IDENT, OPC) IDENT = OPC, -#include "llvm/Target/TargetOpcodes.def" + PHI = 0, + INLINEASM = 1, + CFI_INSTRUCTION = 2, + EH_LABEL = 3, + GC_LABEL = 4, + + /// KILL - This instruction is a noop that is used only to adjust the + /// liveness of registers. This can be useful when dealing with + /// sub-registers. + KILL = 5, + + /// EXTRACT_SUBREG - This instruction takes two operands: a register + /// that has subregisters, and a subregister index. It returns the + /// extracted subregister value. This is commonly used to implement + /// truncation operations on target architectures which support it. + EXTRACT_SUBREG = 6, + + /// INSERT_SUBREG - This instruction takes three operands: a register that + /// has subregisters, a register providing an insert value, and a + /// subregister index. It returns the value of the first register with the + /// value of the second register inserted. The first register is often + /// defined by an IMPLICIT_DEF, because it is commonly used to implement + /// anyext operations on target architectures which support it. + INSERT_SUBREG = 7, + + /// IMPLICIT_DEF - This is the MachineInstr-level equivalent of undef. + IMPLICIT_DEF = 8, + + /// SUBREG_TO_REG - This instruction is similar to INSERT_SUBREG except that + /// the first operand is an immediate integer constant. This constant is + /// often zero, because it is commonly used to assert that the instruction + /// defining the register implicitly clears the high bits. + SUBREG_TO_REG = 9, + + /// COPY_TO_REGCLASS - This instruction is a placeholder for a plain + /// register-to-register copy into a specific register class. This is only + /// 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. It is emitted as a COPY MachineInstr. + COPY_TO_REGCLASS = 10, + + /// DBG_VALUE - a mapping of the llvm.dbg.value intrinsic + DBG_VALUE = 11, + + /// REG_SEQUENCE - This variadic instruction is used to form a register that + /// represents a consecutive sequence of sub-registers. It's used as a + /// 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, + + /// 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, + + /// A Stackmap instruction captures the location of live variables at its + /// position in the instruction stream. It is followed by a shadow of bytes + /// that must lie within the function and not contain another stackmap. + STACKMAP = 17, + + /// Patchable call instruction - this instruction represents a call to a + /// constant address, followed by a series of NOPs. It is intended to + /// support optimizations for dynamic languages (such as javascript) that + /// rewrite calls to runtimes with more efficient code sequences. + /// This also implies a stack map. + PATCHPOINT = 18, + + /// This pseudo-instruction loads the stack guard value. Targets which need + /// to prevent the stack guard value or address from being spilled to the + /// stack should override TargetLowering::emitLoadStackGuardNode and + /// additionally expand this pseudo after register allocation. + LOAD_STACK_GUARD = 19, + + /// Call instruction with associated vm state for deoptimization and list + /// of live pointers for relocation by the garbage collector. It is + /// intended to support garbage collection with fully precise relocating + /// collectors and deoptimizations in either the callee or caller. + STATEPOINT = 20, + + /// Instruction that records the offset of a local stack allocation passed to + /// llvm.localescape. It has two arguments: the symbol for the label and the + /// frame index of the local stack allocation. + LOCAL_ESCAPE = 21, + + /// Loading instruction that may page fault, bundled with associated + /// information on how to handle such a page fault. It is intended to support + /// "zero cost" null checks in managed languages by allowing LLVM to fold + /// comparisons into existing memory operations. + FAULTING_LOAD_OP = 22, + + /// BUILTIN_OP_END - This must be the last enum value in this list. + /// The target-specific post-isel opcode values start here. + GENERIC_OP_END = FAULTING_LOAD_OP, }; } // end namespace TargetOpcode - -/// Check whether the given Opcode is a generic opcode that is not supposed -/// to appear after ISel. -static inline bool isPreISelGenericOpcode(unsigned Opcode) { - return Opcode >= TargetOpcode::PRE_ISEL_GENERIC_OPCODE_START && - Opcode <= TargetOpcode::PRE_ISEL_GENERIC_OPCODE_END; -} - -/// Check whether the given Opcode is a target-specific opcode. -static inline bool isTargetSpecificOpcode(unsigned Opcode) { - return Opcode > TargetOpcode::PRE_ISEL_GENERIC_OPCODE_END; -} } // end namespace llvm #endif |