JDK14/Java14源码在线阅读
//
// Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
// DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
//
// This code is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License version 2 only, as
// published by the Free Software Foundation.
//
// This code is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// version 2 for more details (a copy is included in the LICENSE file that
// accompanied this code).
//
// You should have received a copy of the GNU General Public License version
// 2 along with this work; if not, write to the Free Software Foundation,
// Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
//
// Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
// or visit www.oracle.com if you need additional information or have any
// questions.
//
// ARM Architecture Description File
//----------REGISTER DEFINITION BLOCK------------------------------------------
// This information is used by the matcher and the register allocator to
// describe individual registers and classes of registers within the target
// archtecture.
register %{
//----------Architecture Description Register Definitions----------------------
// General Registers
// "reg_def" name ( register save type, C convention save type,
// ideal register type, encoding, vm name );
// Register Save Types:
//
// NS = No-Save: The register allocator assumes that these registers
// can be used without saving upon entry to the method, &
// that they do not need to be saved at call sites.
//
// SOC = Save-On-Call: The register allocator assumes that these registers
// can be used without saving upon entry to the method,
// but that they must be saved at call sites.
//
// SOE = Save-On-Entry: The register allocator assumes that these registers
// must be saved before using them upon entry to the
// method, but they do not need to be saved at call
// sites.
//
// AS = Always-Save: The register allocator assumes that these registers
// must be saved before using them upon entry to the
// method, & that they must be saved at call sites.
//
// Ideal Register Type is used to determine how to save & restore a
// register. Op_RegI will get spilled with LoadI/StoreI, Op_RegP will get
// spilled with LoadP/StoreP. If the register supports both, use Op_RegI.
//
// The encoding number is the actual bit-pattern placed into the opcodes.
// ----------------------------
// Integer/Long Registers
// ----------------------------
reg_def R_R0 (SOC, SOC, Op_RegI, 0, R(0)->as_VMReg());
reg_def R_R1 (SOC, SOC, Op_RegI, 1, R(1)->as_VMReg());
reg_def R_R2 (SOC, SOC, Op_RegI, 2, R(2)->as_VMReg());
reg_def R_R3 (SOC, SOC, Op_RegI, 3, R(3)->as_VMReg());
reg_def R_R4 (SOC, SOE, Op_RegI, 4, R(4)->as_VMReg());
reg_def R_R5 (SOC, SOE, Op_RegI, 5, R(5)->as_VMReg());
reg_def R_R6 (SOC, SOE, Op_RegI, 6, R(6)->as_VMReg());
reg_def R_R7 (SOC, SOE, Op_RegI, 7, R(7)->as_VMReg());
reg_def R_R8 (SOC, SOE, Op_RegI, 8, R(8)->as_VMReg());
reg_def R_R9 (SOC, SOE, Op_RegI, 9, R(9)->as_VMReg());
reg_def R_R10(NS, SOE, Op_RegI, 10, R(10)->as_VMReg());
reg_def R_R11(NS, SOE, Op_RegI, 11, R(11)->as_VMReg());
reg_def R_R12(SOC, SOC, Op_RegI, 12, R(12)->as_VMReg());
reg_def R_R13(NS, NS, Op_RegI, 13, R(13)->as_VMReg());
reg_def R_R14(SOC, SOC, Op_RegI, 14, R(14)->as_VMReg());
reg_def R_R15(NS, NS, Op_RegI, 15, R(15)->as_VMReg());
// ----------------------------
// Float/Double Registers
// ----------------------------
// Float Registers
reg_def R_S0 ( SOC, SOC, Op_RegF, 0, S0->as_VMReg());
reg_def R_S1 ( SOC, SOC, Op_RegF, 1, S1_reg->as_VMReg());
reg_def R_S2 ( SOC, SOC, Op_RegF, 2, S2_reg->as_VMReg());
reg_def R_S3 ( SOC, SOC, Op_RegF, 3, S3_reg->as_VMReg());
reg_def R_S4 ( SOC, SOC, Op_RegF, 4, S4_reg->as_VMReg());
reg_def R_S5 ( SOC, SOC, Op_RegF, 5, S5_reg->as_VMReg());
reg_def R_S6 ( SOC, SOC, Op_RegF, 6, S6_reg->as_VMReg());
reg_def R_S7 ( SOC, SOC, Op_RegF, 7, S7->as_VMReg());
reg_def R_S8 ( SOC, SOC, Op_RegF, 8, S8->as_VMReg());
reg_def R_S9 ( SOC, SOC, Op_RegF, 9, S9->as_VMReg());
reg_def R_S10( SOC, SOC, Op_RegF, 10,S10->as_VMReg());
reg_def R_S11( SOC, SOC, Op_RegF, 11,S11->as_VMReg());
reg_def R_S12( SOC, SOC, Op_RegF, 12,S12->as_VMReg());
reg_def R_S13( SOC, SOC, Op_RegF, 13,S13->as_VMReg());
reg_def R_S14( SOC, SOC, Op_RegF, 14,S14->as_VMReg());
reg_def R_S15( SOC, SOC, Op_RegF, 15,S15->as_VMReg());
reg_def R_S16( SOC, SOE, Op_RegF, 16,S16->as_VMReg());
reg_def R_S17( SOC, SOE, Op_RegF, 17,S17->as_VMReg());
reg_def R_S18( SOC, SOE, Op_RegF, 18,S18->as_VMReg());
reg_def R_S19( SOC, SOE, Op_RegF, 19,S19->as_VMReg());
reg_def R_S20( SOC, SOE, Op_RegF, 20,S20->as_VMReg());
reg_def R_S21( SOC, SOE, Op_RegF, 21,S21->as_VMReg());
reg_def R_S22( SOC, SOE, Op_RegF, 22,S22->as_VMReg());
reg_def R_S23( SOC, SOE, Op_RegF, 23,S23->as_VMReg());
reg_def R_S24( SOC, SOE, Op_RegF, 24,S24->as_VMReg());
reg_def R_S25( SOC, SOE, Op_RegF, 25,S25->as_VMReg());
reg_def R_S26( SOC, SOE, Op_RegF, 26,S26->as_VMReg());
reg_def R_S27( SOC, SOE, Op_RegF, 27,S27->as_VMReg());
reg_def R_S28( SOC, SOE, Op_RegF, 28,S28->as_VMReg());
reg_def R_S29( SOC, SOE, Op_RegF, 29,S29->as_VMReg());
reg_def R_S30( SOC, SOE, Op_RegF, 30,S30->as_VMReg());
reg_def R_S31( SOC, SOE, Op_RegF, 31,S31->as_VMReg());
// Double Registers
// The rules of ADL require that double registers be defined in pairs.
// Each pair must be two 32-bit values, but not necessarily a pair of
// single float registers. In each pair, ADLC-assigned register numbers
// must be adjacent, with the lower number even. Finally, when the
// CPU stores such a register pair to memory, the word associated with
// the lower ADLC-assigned number must be stored to the lower address.
reg_def R_D16 (SOC, SOC, Op_RegD, 32, D16->as_VMReg());
reg_def R_D16x(SOC, SOC, Op_RegD,255, D16->as_VMReg()->next());
reg_def R_D17 (SOC, SOC, Op_RegD, 34, D17->as_VMReg());
reg_def R_D17x(SOC, SOC, Op_RegD,255, D17->as_VMReg()->next());
reg_def R_D18 (SOC, SOC, Op_RegD, 36, D18->as_VMReg());
reg_def R_D18x(SOC, SOC, Op_RegD,255, D18->as_VMReg()->next());
reg_def R_D19 (SOC, SOC, Op_RegD, 38, D19->as_VMReg());
reg_def R_D19x(SOC, SOC, Op_RegD,255, D19->as_VMReg()->next());
reg_def R_D20 (SOC, SOC, Op_RegD, 40, D20->as_VMReg());
reg_def R_D20x(SOC, SOC, Op_RegD,255, D20->as_VMReg()->next());
reg_def R_D21 (SOC, SOC, Op_RegD, 42, D21->as_VMReg());
reg_def R_D21x(SOC, SOC, Op_RegD,255, D21->as_VMReg()->next());
reg_def R_D22 (SOC, SOC, Op_RegD, 44, D22->as_VMReg());
reg_def R_D22x(SOC, SOC, Op_RegD,255, D22->as_VMReg()->next());
reg_def R_D23 (SOC, SOC, Op_RegD, 46, D23->as_VMReg());
reg_def R_D23x(SOC, SOC, Op_RegD,255, D23->as_VMReg()->next());
reg_def R_D24 (SOC, SOC, Op_RegD, 48, D24->as_VMReg());
reg_def R_D24x(SOC, SOC, Op_RegD,255, D24->as_VMReg()->next());
reg_def R_D25 (SOC, SOC, Op_RegD, 50, D25->as_VMReg());
reg_def R_D25x(SOC, SOC, Op_RegD,255, D25->as_VMReg()->next());
reg_def R_D26 (SOC, SOC, Op_RegD, 52, D26->as_VMReg());
reg_def R_D26x(SOC, SOC, Op_RegD,255, D26->as_VMReg()->next());
reg_def R_D27 (SOC, SOC, Op_RegD, 54, D27->as_VMReg());
reg_def R_D27x(SOC, SOC, Op_RegD,255, D27->as_VMReg()->next());
reg_def R_D28 (SOC, SOC, Op_RegD, 56, D28->as_VMReg());
reg_def R_D28x(SOC, SOC, Op_RegD,255, D28->as_VMReg()->next());
reg_def R_D29 (SOC, SOC, Op_RegD, 58, D29->as_VMReg());
reg_def R_D29x(SOC, SOC, Op_RegD,255, D29->as_VMReg()->next());
reg_def R_D30 (SOC, SOC, Op_RegD, 60, D30->as_VMReg());
reg_def R_D30x(SOC, SOC, Op_RegD,255, D30->as_VMReg()->next());
reg_def R_D31 (SOC, SOC, Op_RegD, 62, D31->as_VMReg());
reg_def R_D31x(SOC, SOC, Op_RegD,255, D31->as_VMReg()->next());
// ----------------------------
// Special Registers
// Condition Codes Flag Registers
reg_def APSR (SOC, SOC, Op_RegFlags, 0, VMRegImpl::Bad());
reg_def FPSCR(SOC, SOC, Op_RegFlags, 0, VMRegImpl::Bad());
// ----------------------------
// Specify the enum values for the registers. These enums are only used by the
// OptoReg "class". We can convert these enum values at will to VMReg when needed
// for visibility to the rest of the vm. The order of this enum influences the
// register allocator so having the freedom to set this order and not be stuck
// with the order that is natural for the rest of the vm is worth it.
// registers in that order so that R11/R12 is an aligned pair that can be used for longs
alloc_class chunk0(
R_R4, R_R5, R_R6, R_R7, R_R8, R_R9, R_R11, R_R12, R_R10, R_R13, R_R14, R_R15, R_R0, R_R1, R_R2, R_R3);
// Note that a register is not allocatable unless it is also mentioned
// in a widely-used reg_class below.
alloc_class chunk1(
R_S16, R_S17, R_S18, R_S19, R_S20, R_S21, R_S22, R_S23,
R_S24, R_S25, R_S26, R_S27, R_S28, R_S29, R_S30, R_S31,
R_S0, R_S1, R_S2, R_S3, R_S4, R_S5, R_S6, R_S7,
R_S8, R_S9, R_S10, R_S11, R_S12, R_S13, R_S14, R_S15,
R_D16, R_D16x,R_D17, R_D17x,R_D18, R_D18x,R_D19, R_D19x,
R_D20, R_D20x,R_D21, R_D21x,R_D22, R_D22x,R_D23, R_D23x,
R_D24, R_D24x,R_D25, R_D25x,R_D26, R_D26x,R_D27, R_D27x,
R_D28, R_D28x,R_D29, R_D29x,R_D30, R_D30x,R_D31, R_D31x
);
alloc_class chunk2(APSR, FPSCR);
//----------Architecture Description Register Classes--------------------------
// Several register classes are automatically defined based upon information in
// this architecture description.
// 1) reg_class inline_cache_reg ( as defined in frame section )
// 2) reg_class interpreter_method_oop_reg ( as defined in frame section )
// 3) reg_class stack_slots( /* one chunk of stack-based "registers" */ )
//
// ----------------------------
// Integer Register Classes
// ----------------------------
// Exclusions from i_reg:
// SP (R13), PC (R15)
// R10: reserved by HotSpot to the TLS register (invariant within Java)
reg_class int_reg(R_R0, R_R1, R_R2, R_R3, R_R4, R_R5, R_R6, R_R7, R_R8, R_R9, R_R11, R_R12, R_R14);
reg_class R0_regI(R_R0);
reg_class R1_regI(R_R1);
reg_class R2_regI(R_R2);
reg_class R3_regI(R_R3);
reg_class R12_regI(R_R12);
// ----------------------------
// Pointer Register Classes
// ----------------------------
reg_class ptr_reg(R_R0, R_R1, R_R2, R_R3, R_R4, R_R5, R_R6, R_R7, R_R8, R_R9, R_R11, R_R12, R_R14);
// Special class for storeP instructions, which can store SP or RPC to TLS.
// It is also used for memory addressing, allowing direct TLS addressing.
reg_class sp_ptr_reg(R_R0, R_R1, R_R2, R_R3, R_R4, R_R5, R_R6, R_R7, R_R8, R_R9, R_R11, R_R12, R_R14, R_R10 /* TLS*/, R_R13 /* SP*/);
#define R_Ricklass R_R8
#define R_Rmethod R_R9
#define R_Rthread R_R10
#define R_Rexception_obj R_R4
// Other special pointer regs
reg_class R0_regP(R_R0);
reg_class R1_regP(R_R1);
reg_class R2_regP(R_R2);
reg_class R4_regP(R_R4);
reg_class R8_regP(R_R8);
reg_class R9_regP(R_R9);
reg_class R12_regP(R_R12);
reg_class Rexception_regP(R_Rexception_obj);
reg_class Ricklass_regP(R_Ricklass);
reg_class Rmethod_regP(R_Rmethod);
reg_class Rthread_regP(R_Rthread);
reg_class IP_regP(R_R12);
reg_class SP_regP(R_R13);
reg_class LR_regP(R_R14);
reg_class FP_regP(R_R11);
// ----------------------------
// Long Register Classes
// ----------------------------
reg_class long_reg ( R_R0,R_R1, R_R2,R_R3, R_R4,R_R5, R_R6,R_R7, R_R8,R_R9, R_R11,R_R12);
// for ldrexd, strexd: first reg of pair must be even
reg_class long_reg_align ( R_R0,R_R1, R_R2,R_R3, R_R4,R_R5, R_R6,R_R7, R_R8,R_R9);
reg_class R0R1_regL(R_R0,R_R1);
reg_class R2R3_regL(R_R2,R_R3);
// ----------------------------
// Special Class for Condition Code Flags Register
reg_class int_flags(APSR);
reg_class float_flags(FPSCR);
// ----------------------------
// Float Point Register Classes
// ----------------------------
// Skip S14/S15, they are reserved for mem-mem copies
reg_class sflt_reg(R_S0, R_S1, R_S2, R_S3, R_S4, R_S5, R_S6, R_S7, R_S8, R_S9, R_S10, R_S11, R_S12, R_S13,
R_S16, R_S17, R_S18, R_S19, R_S20, R_S21, R_S22, R_S23, R_S24, R_S25, R_S26, R_S27, R_S28, R_S29, R_S30, R_S31);
// Paired floating point registers--they show up in the same order as the floats,
// but they are used with the "Op_RegD" type, and always occur in even/odd pairs.
reg_class dflt_reg(R_S0,R_S1, R_S2,R_S3, R_S4,R_S5, R_S6,R_S7, R_S8,R_S9, R_S10,R_S11, R_S12,R_S13,
R_S16,R_S17, R_S18,R_S19, R_S20,R_S21, R_S22,R_S23, R_S24,R_S25, R_S26,R_S27, R_S28,R_S29, R_S30,R_S31,
R_D16,R_D16x, R_D17,R_D17x, R_D18,R_D18x, R_D19,R_D19x, R_D20,R_D20x, R_D21,R_D21x, R_D22,R_D22x,
R_D23,R_D23x, R_D24,R_D24x, R_D25,R_D25x, R_D26,R_D26x, R_D27,R_D27x, R_D28,R_D28x, R_D29,R_D29x,
R_D30,R_D30x, R_D31,R_D31x);
reg_class dflt_low_reg(R_S0,R_S1, R_S2,R_S3, R_S4,R_S5, R_S6,R_S7, R_S8,R_S9, R_S10,R_S11, R_S12,R_S13,
R_S16,R_S17, R_S18,R_S19, R_S20,R_S21, R_S22,R_S23, R_S24,R_S25, R_S26,R_S27, R_S28,R_S29, R_S30,R_S31);
reg_class actual_dflt_reg %{
if (VM_Version::has_vfp3_32()) {
return DFLT_REG_mask();
} else {
return DFLT_LOW_REG_mask();
}
%}
reg_class S0_regF(R_S0);
reg_class D0_regD(R_S0,R_S1);
reg_class D1_regD(R_S2,R_S3);
reg_class D2_regD(R_S4,R_S5);
reg_class D3_regD(R_S6,R_S7);
reg_class D4_regD(R_S8,R_S9);
reg_class D5_regD(R_S10,R_S11);
reg_class D6_regD(R_S12,R_S13);
reg_class D7_regD(R_S14,R_S15);
reg_class D16_regD(R_D16,R_D16x);
reg_class D17_regD(R_D17,R_D17x);
reg_class D18_regD(R_D18,R_D18x);
reg_class D19_regD(R_D19,R_D19x);
reg_class D20_regD(R_D20,R_D20x);
reg_class D21_regD(R_D21,R_D21x);
reg_class D22_regD(R_D22,R_D22x);
reg_class D23_regD(R_D23,R_D23x);
reg_class D24_regD(R_D24,R_D24x);
reg_class D25_regD(R_D25,R_D25x);
reg_class D26_regD(R_D26,R_D26x);
reg_class D27_regD(R_D27,R_D27x);
reg_class D28_regD(R_D28,R_D28x);
reg_class D29_regD(R_D29,R_D29x);
reg_class D30_regD(R_D30,R_D30x);
reg_class D31_regD(R_D31,R_D31x);
reg_class vectorx_reg(R_S0,R_S1,R_S2,R_S3, R_S4,R_S5,R_S6,R_S7,
R_S8,R_S9,R_S10,R_S11, /* skip S14/S15 */
R_S16,R_S17,R_S18,R_S19, R_S20,R_S21,R_S22,R_S23,
R_S24,R_S25,R_S26,R_S27, R_S28,R_S29,R_S30,R_S31,
R_D16,R_D16x,R_D17,R_D17x, R_D18,R_D18x,R_D19,R_D19x,
R_D20,R_D20x,R_D21,R_D21x, R_D22,R_D22x,R_D23,R_D23x,
R_D24,R_D24x,R_D25,R_D25x, R_D26,R_D26x,R_D27,R_D27x,
R_D28,R_D28x,R_D29,R_D29x, R_D30,R_D30x,R_D31,R_D31x);
%}
source_hpp %{
// FIXME
const MachRegisterNumbers R_mem_copy_lo_num = R_S14_num;
const MachRegisterNumbers R_mem_copy_hi_num = R_S15_num;
const FloatRegister Rmemcopy = S14;
const MachRegisterNumbers R_hf_ret_lo_num = R_S0_num;
const MachRegisterNumbers R_hf_ret_hi_num = R_S1_num;
const MachRegisterNumbers R_Ricklass_num = R_R8_num;
const MachRegisterNumbers R_Rmethod_num = R_R9_num;
#define LDR_DOUBLE "FLDD"
#define LDR_FLOAT "FLDS"
#define STR_DOUBLE "FSTD"
#define STR_FLOAT "FSTS"
#define LDR_64 "LDRD"
#define STR_64 "STRD"
#define LDR_32 "LDR"
#define STR_32 "STR"
#define MOV_DOUBLE "FCPYD"
#define MOV_FLOAT "FCPYS"
#define FMSR "FMSR"
#define FMRS "FMRS"
#define LDREX "ldrex "
#define STREX "strex "
#define str_64 strd
#define ldr_64 ldrd
#define ldr_32 ldr
#define ldrex ldrex
#define strex strex
static inline bool is_memoryD(int offset) {
return offset < 1024 && offset > -1024;
}
static inline bool is_memoryfp(int offset) {
return offset < 1024 && offset > -1024;
}
static inline bool is_memoryI(int offset) {
return offset < 4096 && offset > -4096;
}
static inline bool is_memoryP(int offset) {
return offset < 4096 && offset > -4096;
}
static inline bool is_memoryHD(int offset) {
return offset < 256 && offset > -256;
}
static inline bool is_aimm(int imm) {
return AsmOperand::is_rotated_imm(imm);
}
static inline bool is_limmI(jint imm) {
return AsmOperand::is_rotated_imm(imm);
}
static inline bool is_limmI_low(jint imm, int n) {
int imml = imm & right_n_bits(n);
return is_limmI(imml) || is_limmI(imm);
}
static inline int limmI_low(jint imm, int n) {
int imml = imm & right_n_bits(n);
return is_limmI(imml) ? imml : imm;
}
%}
source %{
// Given a register encoding, produce a Integer Register object
static Register reg_to_register_object(int register_encoding) {
assert(R0->encoding() == R_R0_enc && R15->encoding() == R_R15_enc, "right coding");
return as_Register(register_encoding);
}
// Given a register encoding, produce a single-precision Float Register object
static FloatRegister reg_to_FloatRegister_object(int register_encoding) {
assert(S0->encoding() == R_S0_enc && S31->encoding() == R_S31_enc, "right coding");
return as_FloatRegister(register_encoding);
}
void Compile::pd_compiler2_init() {
// Umimplemented
}
// Location of compiled Java return values. Same as C
OptoRegPair c2::return_value(int ideal_reg) {
assert( ideal_reg >= Op_RegI && ideal_reg <= Op_RegL, "only return normal values" );
#ifndef __ABI_HARD__
static int lo[Op_RegL+1] = { 0, 0, OptoReg::Bad, R_R0_num, R_R0_num, R_R0_num, R_R0_num, R_R0_num };
static int hi[Op_RegL+1] = { 0, 0, OptoReg::Bad, OptoReg::Bad, OptoReg::Bad, OptoReg::Bad, R_R1_num, R_R1_num };
#else
static int lo[Op_RegL+1] = { 0, 0, OptoReg::Bad, R_R0_num, R_R0_num, R_hf_ret_lo_num, R_hf_ret_lo_num, R_R0_num };
static int hi[Op_RegL+1] = { 0, 0, OptoReg::Bad, OptoReg::Bad, OptoReg::Bad, OptoReg::Bad, R_hf_ret_hi_num, R_R1_num };
#endif
return OptoRegPair( hi[ideal_reg], lo[ideal_reg]);
}
// !!!!! Special hack to get all type of calls to specify the byte offset
// from the start of the call to the point where the return address
// will point.
int MachCallStaticJavaNode::ret_addr_offset() {
bool far = (_method == NULL) ? maybe_far_call(this) : !cache_reachable();
return ((far ? 3 : 1) + (_method_handle_invoke ? 1 : 0)) *
NativeInstruction::instruction_size;
}
int MachCallDynamicJavaNode::ret_addr_offset() {
bool far = !cache_reachable();
// mov_oop is always 2 words
return (2 + (far ? 3 : 1)) * NativeInstruction::instruction_size;
}
int MachCallRuntimeNode::ret_addr_offset() {
// bl or movw; movt; blx
bool far = maybe_far_call(this);
return (far ? 3 : 1) * NativeInstruction::instruction_size;
}
%}
// The intptr_t operand types, defined by textual substitution.
// (Cf. opto/type.hpp. This lets us avoid many, many other ifdefs.)
#define immX immI
#define immXRot immIRot
#define iRegX iRegI
#define aimmX aimmI
#define limmX limmI
#define immX10x2 immI10x2
#define LShiftX LShiftI
#define shimmX immU5
// Compatibility interface
#define aimmP immPRot
#define immIMov immIRot
#define store_RegL iRegL
#define store_RegLd iRegLd
#define store_RegI iRegI
#define store_ptr_RegP iRegP
//----------ATTRIBUTES---------------------------------------------------------
//----------Operand Attributes-------------------------------------------------
op_attrib op_cost(1); // Required cost attribute
//----------OPERANDS-----------------------------------------------------------
// Operand definitions must precede instruction definitions for correct parsing
// in the ADLC because operands constitute user defined types which are used in
// instruction definitions.
//----------Simple Operands----------------------------------------------------
// Immediate Operands
operand immIRot() %{
predicate(AsmOperand::is_rotated_imm(n->get_int()));
match(ConI);
op_cost(0);
// formats are generated automatically for constants and base registers
format %{ %}
interface(CONST_INTER);
%}
operand immIRotn() %{
predicate(n->get_int() != 0 && AsmOperand::is_rotated_imm(~n->get_int()));
match(ConI);
op_cost(0);
// formats are generated automatically for constants and base registers
format %{ %}
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