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;; ARM Thumb-2 Machine Description;; Copyright (C) 2007, 2008, 2010 Free Software Foundation, Inc.;; Written by CodeSourcery, LLC.;;;; This file is part of GCC.;;;; GCC is free software; you can redistribute it and/or modify it;; under the terms of the GNU General Public License as published by;; the Free Software Foundation; either version 3, or (at your option);; any later version.;;;; GCC 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 for more details.;;;; You should have received a copy of the GNU General Public License;; along with GCC; see the file COPYING3. If not see;; <http://www.gnu.org/licenses/>. */;; Note: Thumb-2 is the variant of the Thumb architecture that adds;; 32-bit encodings of [almost all of] the Arm instruction set.;; Some old documents refer to the relatively minor interworking;; changes made in armv5t as "thumb2". These are considered part;; the 16-bit Thumb-1 instruction set.(define_insn "*thumb2_incscc"[(set (match_operand:SI 0 "s_register_operand" "=r,r")(plus:SI (match_operator:SI 2 "arm_comparison_operator"[(match_operand:CC 3 "cc_register" "") (const_int 0)])(match_operand:SI 1 "s_register_operand" "0,?r")))]"TARGET_THUMB2""@it\\t%d2\;add%d2\\t%0, %1, #1ite\\t%D2\;mov%D2\\t%0, %1\;add%d2\\t%0, %1, #1"[(set_attr "conds" "use")(set_attr "length" "6,10")])(define_insn "*thumb2_decscc"[(set (match_operand:SI 0 "s_register_operand" "=r,r")(minus:SI (match_operand:SI 1 "s_register_operand" "0,?r")(match_operator:SI 2 "arm_comparison_operator"[(match_operand 3 "cc_register" "") (const_int 0)])))]"TARGET_THUMB2""@it\\t%d2\;sub%d2\\t%0, %1, #1ite\\t%D2\;mov%D2\\t%0, %1\;sub%d2\\t%0, %1, #1"[(set_attr "conds" "use")(set_attr "length" "6,10")]);; Thumb-2 only allows shift by constant on data processing instructions(define_insn "*thumb_andsi_not_shiftsi_si"[(set (match_operand:SI 0 "s_register_operand" "=r")(and:SI (not:SI (match_operator:SI 4 "shift_operator"[(match_operand:SI 2 "s_register_operand" "r")(match_operand:SI 3 "const_int_operand" "M")]))(match_operand:SI 1 "s_register_operand" "r")))]"TARGET_THUMB2""bic%?\\t%0, %1, %2%S4"[(set_attr "predicable" "yes")(set_attr "shift" "2")(set_attr "type" "alu_shift")])(define_insn "*thumb2_smaxsi3"[(set (match_operand:SI 0 "s_register_operand" "=r,r,r")(smax:SI (match_operand:SI 1 "s_register_operand" "0,r,?r")(match_operand:SI 2 "arm_rhs_operand" "rI,0,rI")))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2""@cmp\\t%1, %2\;it\\tlt\;movlt\\t%0, %2cmp\\t%1, %2\;it\\tge\;movge\\t%0, %1cmp\\t%1, %2\;ite\\tge\;movge\\t%0, %1\;movlt\\t%0, %2"[(set_attr "conds" "clob")(set_attr "length" "10,10,14")])(define_insn "*thumb2_sminsi3"[(set (match_operand:SI 0 "s_register_operand" "=r,r,r")(smin:SI (match_operand:SI 1 "s_register_operand" "0,r,?r")(match_operand:SI 2 "arm_rhs_operand" "rI,0,rI")))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2""@cmp\\t%1, %2\;it\\tge\;movge\\t%0, %2cmp\\t%1, %2\;it\\tlt\;movlt\\t%0, %1cmp\\t%1, %2\;ite\\tlt\;movlt\\t%0, %1\;movge\\t%0, %2"[(set_attr "conds" "clob")(set_attr "length" "10,10,14")])(define_insn "*thumb32_umaxsi3"[(set (match_operand:SI 0 "s_register_operand" "=r,r,r")(umax:SI (match_operand:SI 1 "s_register_operand" "0,r,?r")(match_operand:SI 2 "arm_rhs_operand" "rI,0,rI")))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2""@cmp\\t%1, %2\;it\\tcc\;movcc\\t%0, %2cmp\\t%1, %2\;it\\tcs\;movcs\\t%0, %1cmp\\t%1, %2\;ite\\tcs\;movcs\\t%0, %1\;movcc\\t%0, %2"[(set_attr "conds" "clob")(set_attr "length" "10,10,14")])(define_insn "*thumb2_uminsi3"[(set (match_operand:SI 0 "s_register_operand" "=r,r,r")(umin:SI (match_operand:SI 1 "s_register_operand" "0,r,?r")(match_operand:SI 2 "arm_rhs_operand" "rI,0,rI")))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2""@cmp\\t%1, %2\;it\\tcs\;movcs\\t%0, %2cmp\\t%1, %2\;it\\tcc\;movcc\\t%0, %1cmp\\t%1, %2\;ite\\tcc\;movcc\\t%0, %1\;movcs\\t%0, %2"[(set_attr "conds" "clob")(set_attr "length" "10,10,14")]);; Thumb-2 does not have rsc, so use a clever trick with shifter operands.(define_insn "*thumb2_negdi2"[(set (match_operand:DI 0 "s_register_operand" "=&r,r")(neg:DI (match_operand:DI 1 "s_register_operand" "?r,0")))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2""negs\\t%Q0, %Q1\;sbc\\t%R0, %R1, %R1, lsl #1"[(set_attr "conds" "clob")(set_attr "length" "8")])(define_insn "*thumb2_abssi2"[(set (match_operand:SI 0 "s_register_operand" "=r,&r")(abs:SI (match_operand:SI 1 "s_register_operand" "0,r")))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2""@cmp\\t%0, #0\;it\tlt\;rsblt\\t%0, %0, #0eor%?\\t%0, %1, %1, asr #31\;sub%?\\t%0, %0, %1, asr #31"[(set_attr "conds" "clob,*")(set_attr "shift" "1");; predicable can't be set based on the variant, so left as no(set_attr "length" "10,8")])(define_insn "*thumb2_neg_abssi2"[(set (match_operand:SI 0 "s_register_operand" "=r,&r")(neg:SI (abs:SI (match_operand:SI 1 "s_register_operand" "0,r"))))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2""@cmp\\t%0, #0\;it\\tgt\;rsbgt\\t%0, %0, #0eor%?\\t%0, %1, %1, asr #31\;rsb%?\\t%0, %0, %1, asr #31"[(set_attr "conds" "clob,*")(set_attr "shift" "1");; predicable can't be set based on the variant, so left as no(set_attr "length" "10,8")]);; We have two alternatives here for memory loads (and similarly for stores);; to reflect the fact that the permissible constant pool ranges differ;; between ldr instructions taking low regs and ldr instructions taking high;; regs. The high register alternatives are not taken into account when;; choosing register preferences in order to reflect their expense.(define_insn "*thumb2_movsi_insn"[(set (match_operand:SI 0 "nonimmediate_operand" "=rk,r,r,r,l ,*hk,m,*m")(match_operand:SI 1 "general_operand" "rk ,I,K,j,mi,*mi,l,*hk"))]"TARGET_THUMB2 && ! TARGET_IWMMXT&& !(TARGET_HARD_FLOAT && TARGET_VFP)&& ( register_operand (operands[0], SImode)|| register_operand (operands[1], SImode))""@mov%?\\t%0, %1mov%?\\t%0, %1mvn%?\\t%0, #%B1movw%?\\t%0, %1ldr%?\\t%0, %1ldr%?\\t%0, %1str%?\\t%1, %0str%?\\t%1, %0"[(set_attr "type" "*,*,*,*,load1,load1,store1,store1")(set_attr "predicable" "yes")(set_attr "pool_range" "*,*,*,*,1020,4096,*,*")(set_attr "neg_pool_range" "*,*,*,*,0,0,*,*")])(define_insn "tls_load_dot_plus_four"[(set (match_operand:SI 0 "register_operand" "=l,l,r,r")(mem:SI (unspec:SI [(match_operand:SI 2 "register_operand" "0,1,0,1")(const_int 4)(match_operand 3 "" "")]UNSPEC_PIC_BASE)))(clobber (match_scratch:SI 1 "=X,l,X,r"))]"TARGET_THUMB2""*(*targetm.asm_out.internal_label) (asm_out_file, \"LPIC\",INTVAL (operands[3]));return \"add\\t%2, %|pc\;ldr%?\\t%0, [%2]\";"[(set_attr "length" "4,4,6,6")]);; Thumb-2 always has load/store halfword instructions, so we can avoid a lot;; of the messiness associated with the ARM patterns.(define_insn "*thumb2_movhi_insn"[(set (match_operand:HI 0 "nonimmediate_operand" "=r,r,m,r")(match_operand:HI 1 "general_operand" "rI,n,r,m"))]"TARGET_THUMB2&& (register_operand (operands[0], HImode)|| register_operand (operands[1], HImode))""@mov%?\\t%0, %1\\t%@ movhimovw%?\\t%0, %L1\\t%@ movhistr%(h%)\\t%1, %0\\t%@ movhildr%(h%)\\t%0, %1\\t%@ movhi"[(set_attr "type" "*,*,store1,load1")(set_attr "predicable" "yes")(set_attr "pool_range" "*,*,*,4096")(set_attr "neg_pool_range" "*,*,*,250")])(define_insn "*thumb2_cmpsi_neg_shiftsi"[(set (reg:CC CC_REGNUM)(compare:CC (match_operand:SI 0 "s_register_operand" "r")(neg:SI (match_operator:SI 3 "shift_operator"[(match_operand:SI 1 "s_register_operand" "r")(match_operand:SI 2 "const_int_operand" "M")]))))]"TARGET_THUMB2""cmn%?\\t%0, %1%S3"[(set_attr "conds" "set")(set_attr "shift" "1")(set_attr "type" "alu_shift")])(define_insn "*thumb2_mov_scc"[(set (match_operand:SI 0 "s_register_operand" "=r")(match_operator:SI 1 "arm_comparison_operator"[(match_operand 2 "cc_register" "") (const_int 0)]))]"TARGET_THUMB2""ite\\t%D1\;mov%D1\\t%0, #0\;mov%d1\\t%0, #1"[(set_attr "conds" "use")(set_attr "length" "10")])(define_insn "*thumb2_mov_negscc"[(set (match_operand:SI 0 "s_register_operand" "=r")(neg:SI (match_operator:SI 1 "arm_comparison_operator"[(match_operand 2 "cc_register" "") (const_int 0)])))]"TARGET_THUMB2""ite\\t%D1\;mov%D1\\t%0, #0\;mvn%d1\\t%0, #0"[(set_attr "conds" "use")(set_attr "length" "10")])(define_insn "*thumb2_mov_notscc"[(set (match_operand:SI 0 "s_register_operand" "=r")(not:SI (match_operator:SI 1 "arm_comparison_operator"[(match_operand 2 "cc_register" "") (const_int 0)])))]"TARGET_THUMB2""ite\\t%D1\;mvn%D1\\t%0, #0\;mvn%d1\\t%0, #1"[(set_attr "conds" "use")(set_attr "length" "10")])(define_insn "*thumb2_movsicc_insn"[(set (match_operand:SI 0 "s_register_operand" "=r,r,r,r,r,r,r,r")(if_then_else:SI(match_operator 3 "arm_comparison_operator"[(match_operand 4 "cc_register" "") (const_int 0)])(match_operand:SI 1 "arm_not_operand" "0,0,rI,K,rI,rI,K,K")(match_operand:SI 2 "arm_not_operand" "rI,K,0,0,rI,K,rI,K")))]"TARGET_THUMB2""@it\\t%D3\;mov%D3\\t%0, %2it\\t%D3\;mvn%D3\\t%0, #%B2it\\t%d3\;mov%d3\\t%0, %1it\\t%d3\;mvn%d3\\t%0, #%B1ite\\t%d3\;mov%d3\\t%0, %1\;mov%D3\\t%0, %2ite\\t%d3\;mov%d3\\t%0, %1\;mvn%D3\\t%0, #%B2ite\\t%d3\;mvn%d3\\t%0, #%B1\;mov%D3\\t%0, %2ite\\t%d3\;mvn%d3\\t%0, #%B1\;mvn%D3\\t%0, #%B2"[(set_attr "length" "6,6,6,6,10,10,10,10")(set_attr "conds" "use")])(define_insn "*thumb2_movsfcc_soft_insn"[(set (match_operand:SF 0 "s_register_operand" "=r,r")(if_then_else:SF (match_operator 3 "arm_comparison_operator"[(match_operand 4 "cc_register" "") (const_int 0)])(match_operand:SF 1 "s_register_operand" "0,r")(match_operand:SF 2 "s_register_operand" "r,0")))]"TARGET_THUMB2 && TARGET_SOFT_FLOAT""@it\\t%D3\;mov%D3\\t%0, %2it\\t%d3\;mov%d3\\t%0, %1"[(set_attr "length" "6,6")(set_attr "conds" "use")])(define_insn "*call_reg_thumb2"[(call (mem:SI (match_operand:SI 0 "s_register_operand" "r"))(match_operand 1 "" ""))(use (match_operand 2 "" ""))(clobber (reg:SI LR_REGNUM))]"TARGET_THUMB2""blx%?\\t%0"[(set_attr "type" "call")])(define_insn "*call_value_reg_thumb2"[(set (match_operand 0 "" "")(call (mem:SI (match_operand:SI 1 "register_operand" "l*r"))(match_operand 2 "" "")))(use (match_operand 3 "" ""))(clobber (reg:SI LR_REGNUM))]"TARGET_THUMB2""blx\\t%1"[(set_attr "type" "call")])(define_insn "*thumb2_indirect_jump"[(set (pc)(match_operand:SI 0 "register_operand" "l*r"))]"TARGET_THUMB2""bx\\t%0"[(set_attr "conds" "clob")]);; Don't define thumb2_load_indirect_jump because we can't guarantee label;; addresses will have the thumb bit set correctly.(define_insn "*thumb2_and_scc"[(set (match_operand:SI 0 "s_register_operand" "=r")(and:SI (match_operator:SI 1 "arm_comparison_operator"[(match_operand 3 "cc_register" "") (const_int 0)])(match_operand:SI 2 "s_register_operand" "r")))]"TARGET_THUMB2""ite\\t%D1\;mov%D1\\t%0, #0\;and%d1\\t%0, %2, #1"[(set_attr "conds" "use")(set_attr "length" "10")])(define_insn "*thumb2_ior_scc"[(set (match_operand:SI 0 "s_register_operand" "=r,r")(ior:SI (match_operator:SI 2 "arm_comparison_operator"[(match_operand 3 "cc_register" "") (const_int 0)])(match_operand:SI 1 "s_register_operand" "0,?r")))]"TARGET_THUMB2""@it\\t%d2\;orr%d2\\t%0, %1, #1ite\\t%D2\;mov%D2\\t%0, %1\;orr%d2\\t%0, %1, #1"[(set_attr "conds" "use")(set_attr "length" "6,10")])(define_insn "*thumb2_cond_move"[(set (match_operand:SI 0 "s_register_operand" "=r,r,r")(if_then_else:SI (match_operator 3 "equality_operator"[(match_operator 4 "arm_comparison_operator"[(match_operand 5 "cc_register" "") (const_int 0)])(const_int 0)])(match_operand:SI 1 "arm_rhs_operand" "0,rI,?rI")(match_operand:SI 2 "arm_rhs_operand" "rI,0,rI")))]"TARGET_THUMB2""*if (GET_CODE (operands[3]) == NE){if (which_alternative != 1)output_asm_insn (\"it\\t%D4\;mov%D4\\t%0, %2\", operands);if (which_alternative != 0)output_asm_insn (\"it\\t%d4\;mov%d4\\t%0, %1\", operands);return \"\";}switch (which_alternative){case 0:output_asm_insn (\"it\\t%d4\", operands);break;case 1:output_asm_insn (\"it\\t%D4\", operands);break;case 2:output_asm_insn (\"ite\\t%D4\", operands);break;default:abort();}if (which_alternative != 0)output_asm_insn (\"mov%D4\\t%0, %1\", operands);if (which_alternative != 1)output_asm_insn (\"mov%d4\\t%0, %2\", operands);return \"\";"[(set_attr "conds" "use")(set_attr "length" "6,6,10")])(define_insn "*thumb2_cond_arith"[(set (match_operand:SI 0 "s_register_operand" "=r,r")(match_operator:SI 5 "shiftable_operator"[(match_operator:SI 4 "arm_comparison_operator"[(match_operand:SI 2 "s_register_operand" "r,r")(match_operand:SI 3 "arm_rhs_operand" "rI,rI")])(match_operand:SI 1 "s_register_operand" "0,?r")]))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2""*if (GET_CODE (operands[4]) == LT && operands[3] == const0_rtx)return \"%i5\\t%0, %1, %2, lsr #31\";output_asm_insn (\"cmp\\t%2, %3\", operands);if (GET_CODE (operands[5]) == AND){output_asm_insn (\"ite\\t%D4\", operands);output_asm_insn (\"mov%D4\\t%0, #0\", operands);}else if (GET_CODE (operands[5]) == MINUS){output_asm_insn (\"ite\\t%D4\", operands);output_asm_insn (\"rsb%D4\\t%0, %1, #0\", operands);}else if (which_alternative != 0){output_asm_insn (\"ite\\t%D4\", operands);output_asm_insn (\"mov%D4\\t%0, %1\", operands);}elseoutput_asm_insn (\"it\\t%d4\", operands);return \"%i5%d4\\t%0, %1, #1\";"[(set_attr "conds" "clob")(set_attr "length" "14")])(define_insn "*thumb2_cond_sub"[(set (match_operand:SI 0 "s_register_operand" "=r,r")(minus:SI (match_operand:SI 1 "s_register_operand" "0,?r")(match_operator:SI 4 "arm_comparison_operator"[(match_operand:SI 2 "s_register_operand" "r,r")(match_operand:SI 3 "arm_rhs_operand" "rI,rI")])))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2""*output_asm_insn (\"cmp\\t%2, %3\", operands);if (which_alternative != 0){output_asm_insn (\"ite\\t%D4\", operands);output_asm_insn (\"mov%D4\\t%0, %1\", operands);}elseoutput_asm_insn (\"it\\t%d4\", operands);return \"sub%d4\\t%0, %1, #1\";"[(set_attr "conds" "clob")(set_attr "length" "10,14")])(define_insn "*thumb2_negscc"[(set (match_operand:SI 0 "s_register_operand" "=r")(neg:SI (match_operator 3 "arm_comparison_operator"[(match_operand:SI 1 "s_register_operand" "r")(match_operand:SI 2 "arm_rhs_operand" "rI")])))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2""*if (GET_CODE (operands[3]) == LT && operands[2] == const0_rtx)return \"asr\\t%0, %1, #31\";if (GET_CODE (operands[3]) == NE)return \"subs\\t%0, %1, %2\;it\\tne\;mvnne\\t%0, #0\";output_asm_insn (\"cmp\\t%1, %2\", operands);output_asm_insn (\"ite\\t%D3\", operands);output_asm_insn (\"mov%D3\\t%0, #0\", operands);return \"mvn%d3\\t%0, #0\";"[(set_attr "conds" "clob")(set_attr "length" "14")])(define_insn "*thumb2_movcond"[(set (match_operand:SI 0 "s_register_operand" "=r,r,r")(if_then_else:SI(match_operator 5 "arm_comparison_operator"[(match_operand:SI 3 "s_register_operand" "r,r,r")(match_operand:SI 4 "arm_add_operand" "rIL,rIL,rIL")])(match_operand:SI 1 "arm_rhs_operand" "0,rI,?rI")(match_operand:SI 2 "arm_rhs_operand" "rI,0,rI")))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2""*if (GET_CODE (operands[5]) == LT&& (operands[4] == const0_rtx)){if (which_alternative != 1 && GET_CODE (operands[1]) == REG){if (operands[2] == const0_rtx)return \"and\\t%0, %1, %3, asr #31\";return \"ands\\t%0, %1, %3, asr #32\;it\\tcc\;movcc\\t%0, %2\";}else if (which_alternative != 0 && GET_CODE (operands[2]) == REG){if (operands[1] == const0_rtx)return \"bic\\t%0, %2, %3, asr #31\";return \"bics\\t%0, %2, %3, asr #32\;it\\tcs\;movcs\\t%0, %1\";}/* The only case that falls through to here is when both ops 1 & 2are constants. */}if (GET_CODE (operands[5]) == GE&& (operands[4] == const0_rtx)){if (which_alternative != 1 && GET_CODE (operands[1]) == REG){if (operands[2] == const0_rtx)return \"bic\\t%0, %1, %3, asr #31\";return \"bics\\t%0, %1, %3, asr #32\;it\\tcs\;movcs\\t%0, %2\";}else if (which_alternative != 0 && GET_CODE (operands[2]) == REG){if (operands[1] == const0_rtx)return \"and\\t%0, %2, %3, asr #31\";return \"ands\\t%0, %2, %3, asr #32\;it\tcc\;movcc\\t%0, %1\";}/* The only case that falls through to here is when both ops 1 & 2are constants. */}if (GET_CODE (operands[4]) == CONST_INT&& !const_ok_for_arm (INTVAL (operands[4])))output_asm_insn (\"cmn\\t%3, #%n4\", operands);elseoutput_asm_insn (\"cmp\\t%3, %4\", operands);switch (which_alternative){case 0:output_asm_insn (\"it\\t%D5\", operands);break;case 1:output_asm_insn (\"it\\t%d5\", operands);break;case 2:output_asm_insn (\"ite\\t%d5\", operands);break;default:abort();}if (which_alternative != 0)output_asm_insn (\"mov%d5\\t%0, %1\", operands);if (which_alternative != 1)output_asm_insn (\"mov%D5\\t%0, %2\", operands);return \"\";"[(set_attr "conds" "clob")(set_attr "length" "10,10,14")]);; Zero and sign extension instructions.;; All supported Thumb2 implementations are armv6, so only that case is;; provided.(define_insn "*thumb2_extendqisi_v6"[(set (match_operand:SI 0 "s_register_operand" "=r,r")(sign_extend:SI (match_operand:QI 1 "nonimmediate_operand" "r,m")))]"TARGET_THUMB2 && arm_arch6""@sxtb%?\\t%0, %1ldr%(sb%)\\t%0, %1"[(set_attr "type" "alu_shift,load_byte")(set_attr "predicable" "yes")(set_attr "pool_range" "*,4096")(set_attr "neg_pool_range" "*,250")])(define_insn "*thumb2_zero_extendhisi2_v6"[(set (match_operand:SI 0 "s_register_operand" "=r,r")(zero_extend:SI (match_operand:HI 1 "nonimmediate_operand" "r,m")))]"TARGET_THUMB2 && arm_arch6""@uxth%?\\t%0, %1ldr%(h%)\\t%0, %1"[(set_attr "type" "alu_shift,load_byte")(set_attr "predicable" "yes")(set_attr "pool_range" "*,4096")(set_attr "neg_pool_range" "*,250")])(define_insn "thumb2_zero_extendqisi2_v6"[(set (match_operand:SI 0 "s_register_operand" "=r,r")(zero_extend:SI (match_operand:QI 1 "nonimmediate_operand" "r,m")))]"TARGET_THUMB2 && arm_arch6""@uxtb%(%)\\t%0, %1ldr%(b%)\\t%0, %1\\t%@ zero_extendqisi2"[(set_attr "type" "alu_shift,load_byte")(set_attr "predicable" "yes")(set_attr "pool_range" "*,4096")(set_attr "neg_pool_range" "*,250")])(define_insn "thumb2_casesi_internal"[(parallel [(set (pc)(if_then_else(leu (match_operand:SI 0 "s_register_operand" "r")(match_operand:SI 1 "arm_rhs_operand" "rI"))(mem:SI (plus:SI (mult:SI (match_dup 0) (const_int 4))(label_ref (match_operand 2 "" ""))))(label_ref (match_operand 3 "" ""))))(clobber (reg:CC CC_REGNUM))(clobber (match_scratch:SI 4 "=&r"))(use (label_ref (match_dup 2)))])]"TARGET_THUMB2 && !flag_pic""* return thumb2_output_casesi(operands);"[(set_attr "conds" "clob")(set_attr "length" "16")])(define_insn "thumb2_casesi_internal_pic"[(parallel [(set (pc)(if_then_else(leu (match_operand:SI 0 "s_register_operand" "r")(match_operand:SI 1 "arm_rhs_operand" "rI"))(mem:SI (plus:SI (mult:SI (match_dup 0) (const_int 4))(label_ref (match_operand 2 "" ""))))(label_ref (match_operand 3 "" ""))))(clobber (reg:CC CC_REGNUM))(clobber (match_scratch:SI 4 "=&r"))(clobber (match_scratch:SI 5 "=r"))(use (label_ref (match_dup 2)))])]"TARGET_THUMB2 && flag_pic""* return thumb2_output_casesi(operands);"[(set_attr "conds" "clob")(set_attr "length" "20")]);; Note: this is not predicable, to avoid issues with linker-generated;; interworking stubs.(define_insn "*thumb2_return"[(return)]"TARGET_THUMB2 && USE_RETURN_INSN (FALSE)""*{return output_return_instruction (const_true_rtx, TRUE, FALSE);}"[(set_attr "type" "load1")(set_attr "length" "12")])(define_insn_and_split "thumb2_eh_return"[(unspec_volatile [(match_operand:SI 0 "s_register_operand" "r")]VUNSPEC_EH_RETURN)(clobber (match_scratch:SI 1 "=&r"))]"TARGET_THUMB2""#""&& reload_completed"[(const_int 0)]"{thumb_set_return_address (operands[0], operands[1]);DONE;}")(define_insn "*thumb2_alusi3_short"[(set (match_operand:SI 0 "s_register_operand" "=l")(match_operator:SI 3 "thumb_16bit_operator"[(match_operand:SI 1 "s_register_operand" "0")(match_operand:SI 2 "s_register_operand" "l")]))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2 && reload_completed&& GET_CODE(operands[3]) != PLUS&& GET_CODE(operands[3]) != MINUS""%I3%!\\t%0, %1, %2"[(set_attr "predicable" "yes")(set_attr "length" "2")]);; Similarly for 16-bit shift instructions;; There is no 16-bit rotate by immediate instruction.(define_peephole2[(set (match_operand:SI 0 "low_register_operand" "")(match_operator:SI 3 "shift_operator"[(match_operand:SI 1 "low_register_operand" "")(match_operand:SI 2 "low_reg_or_int_operand" "")]))]"TARGET_THUMB2&& peep2_regno_dead_p(0, CC_REGNUM)&& (CONST_INT_P (operands[2]) || operands[1] == operands[0])&& ((GET_CODE(operands[3]) != ROTATE && GET_CODE(operands[3]) != ROTATERT)|| REG_P(operands[2]))"[(parallel[(set (match_dup 0)(match_op_dup 3[(match_dup 1)(match_dup 2)]))(clobber (reg:CC CC_REGNUM))])]"")(define_insn "*thumb2_shiftsi3_short"[(set (match_operand:SI 0 "low_register_operand" "=l,l")(match_operator:SI 3 "shift_operator"[(match_operand:SI 1 "low_register_operand" "0,l")(match_operand:SI 2 "low_reg_or_int_operand" "l,M")]))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2 && reload_completed&& ((GET_CODE(operands[3]) != ROTATE && GET_CODE(operands[3]) != ROTATERT)|| REG_P(operands[2]))""* return arm_output_shift(operands, 2);"[(set_attr "predicable" "yes")(set_attr "shift" "1")(set_attr "length" "2")(set (attr "type") (if_then_else (match_operand 2 "const_int_operand" "")(const_string "alu_shift")(const_string "alu_shift_reg")))]);; 16-bit load immediate(define_peephole2[(set (match_operand:QHSI 0 "low_register_operand" "")(match_operand:QHSI 1 "const_int_operand" ""))]"TARGET_THUMB2&& peep2_regno_dead_p(0, CC_REGNUM)&& (unsigned HOST_WIDE_INT) INTVAL(operands[1]) < 256"[(parallel[(set (match_dup 0)(match_dup 1))(clobber (reg:CC CC_REGNUM))])]"")(define_insn "*thumb2_mov<mode>_shortim"[(set (match_operand:QHSI 0 "low_register_operand" "=l")(match_operand:QHSI 1 "const_int_operand" "I"))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2 && reload_completed""mov%!\t%0, %1"[(set_attr "predicable" "yes")(set_attr "length" "2")]);; 16-bit add/sub immediate(define_peephole2[(set (match_operand:SI 0 "low_register_operand" "")(plus:SI (match_operand:SI 1 "low_register_operand" "")(match_operand:SI 2 "const_int_operand" "")))]"TARGET_THUMB2&& peep2_regno_dead_p(0, CC_REGNUM)&& ((rtx_equal_p(operands[0], operands[1])&& INTVAL(operands[2]) > -256 && INTVAL(operands[2]) < 256)|| (INTVAL(operands[2]) > -8 && INTVAL(operands[2]) < 8))"[(parallel[(set (match_dup 0)(plus:SI (match_dup 1)(match_dup 2)))(clobber (reg:CC CC_REGNUM))])]"")(define_insn "*thumb2_addsi_short"[(set (match_operand:SI 0 "low_register_operand" "=l,l")(plus:SI (match_operand:SI 1 "low_register_operand" "l,0")(match_operand:SI 2 "low_reg_or_int_operand" "lPt,Ps")))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2 && reload_completed""*HOST_WIDE_INT val;if (GET_CODE (operands[2]) == CONST_INT)val = INTVAL(operands[2]);elseval = 0;/* We prefer eg. subs rn, rn, #1 over adds rn, rn, #0xffffffff. */if (val < 0 && const_ok_for_arm(ARM_SIGN_EXTEND (-val)))return \"sub%!\\t%0, %1, #%n2\";elsereturn \"add%!\\t%0, %1, %2\";"[(set_attr "predicable" "yes")(set_attr "length" "2")])(define_insn "*thumb2_subsi_short"[(set (match_operand:SI 0 "low_register_operand" "=l")(minus:SI (match_operand:SI 1 "low_register_operand" "l")(match_operand:SI 2 "low_register_operand" "l")))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2 && reload_completed""sub%!\\t%0, %1, %2"[(set_attr "predicable" "yes")(set_attr "length" "2")])(define_peephole2[(set (match_operand:CC 0 "cc_register" "")(compare:CC (match_operand:SI 1 "low_register_operand" "")(match_operand:SI 2 "const_int_operand" "")))]"TARGET_THUMB2&& peep2_reg_dead_p (1, operands[1])&& satisfies_constraint_Pw (operands[2])"[(parallel[(set (match_dup 0) (compare:CC (match_dup 1) (match_dup 2)))(set (match_dup 1) (plus:SI (match_dup 1) (match_dup 3)))])]"operands[3] = GEN_INT (- INTVAL (operands[2]));")(define_peephole2[(match_scratch:SI 3 "l")(set (match_operand:CC 0 "cc_register" "")(compare:CC (match_operand:SI 1 "low_register_operand" "")(match_operand:SI 2 "const_int_operand" "")))]"TARGET_THUMB2&& satisfies_constraint_Px (operands[2])"[(parallel[(set (match_dup 0) (compare:CC (match_dup 1) (match_dup 2)))(set (match_dup 3) (plus:SI (match_dup 1) (match_dup 4)))])]"operands[4] = GEN_INT (- INTVAL (operands[2]));")(define_insn "thumb2_addsi3_compare0"[(set (reg:CC_NOOV CC_REGNUM)(compare:CC_NOOV(plus:SI (match_operand:SI 1 "s_register_operand" "l, 0, r")(match_operand:SI 2 "arm_add_operand" "lPt,Ps,rIL"))(const_int 0)))(set (match_operand:SI 0 "s_register_operand" "=l,l,r")(plus:SI (match_dup 1) (match_dup 2)))]"TARGET_THUMB2""*HOST_WIDE_INT val;if (GET_CODE (operands[2]) == CONST_INT)val = INTVAL (operands[2]);elseval = 0;if (val < 0 && const_ok_for_arm (ARM_SIGN_EXTEND (-val)))return \"subs\\t%0, %1, #%n2\";elsereturn \"adds\\t%0, %1, %2\";"[(set_attr "conds" "set")(set_attr "length" "2,2,4")])(define_insn "*thumb2_addsi3_compare0_scratch"[(set (reg:CC_NOOV CC_REGNUM)(compare:CC_NOOV(plus:SI (match_operand:SI 0 "s_register_operand" "l, r")(match_operand:SI 1 "arm_add_operand" "lPv,rIL"))(const_int 0)))]"TARGET_THUMB2""*HOST_WIDE_INT val;if (GET_CODE (operands[1]) == CONST_INT)val = INTVAL (operands[1]);elseval = 0;if (val < 0 && const_ok_for_arm (ARM_SIGN_EXTEND (-val)))return \"cmp\\t%0, #%n1\";elsereturn \"cmn\\t%0, %1\";"[(set_attr "conds" "set")(set_attr "length" "2,4")]);; 16-bit encodings of "muls" and "mul<c>". We only use these when;; optimizing for size since "muls" is slow on all known;; implementations and since "mul<c>" will be generated by;; "*arm_mulsi3_v6" anyhow. The assembler will use a 16-bit encoding;; for "mul<c>" whenever possible anyhow.(define_peephole2[(set (match_operand:SI 0 "low_register_operand" "")(mult:SI (match_operand:SI 1 "low_register_operand" "")(match_dup 0)))]"TARGET_THUMB2 && optimize_size && peep2_regno_dead_p (0, CC_REGNUM)"[(parallel[(set (match_dup 0)(mult:SI (match_dup 0) (match_dup 1)))(clobber (reg:CC CC_REGNUM))])]"")(define_peephole2[(set (match_operand:SI 0 "low_register_operand" "")(mult:SI (match_dup 0)(match_operand:SI 1 "low_register_operand" "")))]"TARGET_THUMB2 && optimize_size && peep2_regno_dead_p (0, CC_REGNUM)"[(parallel[(set (match_dup 0)(mult:SI (match_dup 0) (match_dup 1)))(clobber (reg:CC CC_REGNUM))])]"")(define_insn "*thumb2_mulsi_short"[(set (match_operand:SI 0 "low_register_operand" "=l")(mult:SI (match_operand:SI 1 "low_register_operand" "%0")(match_operand:SI 2 "low_register_operand" "l")))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2 && optimize_size && reload_completed""mul%!\\t%0, %2, %0"[(set_attr "predicable" "yes")(set_attr "length" "2")(set_attr "insn" "muls")])(define_insn "*thumb2_mulsi_short_compare0"[(set (reg:CC_NOOV CC_REGNUM)(compare:CC_NOOV(mult:SI (match_operand:SI 1 "register_operand" "%0")(match_operand:SI 2 "register_operand" "l"))(const_int 0)))(set (match_operand:SI 0 "register_operand" "=l")(mult:SI (match_dup 1) (match_dup 2)))]"TARGET_THUMB2 && optimize_size""muls\\t%0, %2, %0"[(set_attr "length" "2")(set_attr "insn" "muls")])(define_insn "*thumb2_mulsi_short_compare0_scratch"[(set (reg:CC_NOOV CC_REGNUM)(compare:CC_NOOV(mult:SI (match_operand:SI 1 "register_operand" "%0")(match_operand:SI 2 "register_operand" "l"))(const_int 0)))(clobber (match_scratch:SI 0 "=l"))]"TARGET_THUMB2 && optimize_size""muls\\t%0, %2, %0"[(set_attr "length" "2")(set_attr "insn" "muls")])(define_insn "*thumb2_cbz"[(set (pc) (if_then_else(eq (match_operand:SI 0 "s_register_operand" "l,?r")(const_int 0))(label_ref (match_operand 1 "" ""))(pc)))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2""*if (get_attr_length (insn) == 2)return \"cbz\\t%0, %l1\";elsereturn \"cmp\\t%0, #0\;beq\\t%l1\";"[(set (attr "length")(if_then_else(and (ge (minus (match_dup 1) (pc)) (const_int 2))(le (minus (match_dup 1) (pc)) (const_int 128))(not (match_test "which_alternative")))(const_int 2)(const_int 8)))])(define_insn "*thumb2_cbnz"[(set (pc) (if_then_else(ne (match_operand:SI 0 "s_register_operand" "l,?r")(const_int 0))(label_ref (match_operand 1 "" ""))(pc)))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2""*if (get_attr_length (insn) == 2)return \"cbnz\\t%0, %l1\";elsereturn \"cmp\\t%0, #0\;bne\\t%l1\";"[(set (attr "length")(if_then_else(and (ge (minus (match_dup 1) (pc)) (const_int 2))(le (minus (match_dup 1) (pc)) (const_int 128))(not (match_test "which_alternative")))(const_int 2)(const_int 8)))]);; 16-bit complement(define_peephole2[(set (match_operand:SI 0 "low_register_operand" "")(not:SI (match_operand:SI 1 "low_register_operand" "")))]"TARGET_THUMB2&& peep2_regno_dead_p(0, CC_REGNUM)"[(parallel[(set (match_dup 0)(not:SI (match_dup 1)))(clobber (reg:CC CC_REGNUM))])]"")(define_insn "*thumb2_one_cmplsi2_short"[(set (match_operand:SI 0 "low_register_operand" "=l")(not:SI (match_operand:SI 1 "low_register_operand" "l")))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2 && reload_completed""mvn%!\t%0, %1"[(set_attr "predicable" "yes")(set_attr "length" "2")]);; 16-bit negate(define_peephole2[(set (match_operand:SI 0 "low_register_operand" "")(neg:SI (match_operand:SI 1 "low_register_operand" "")))]"TARGET_THUMB2&& peep2_regno_dead_p(0, CC_REGNUM)"[(parallel[(set (match_dup 0)(neg:SI (match_dup 1)))(clobber (reg:CC CC_REGNUM))])]"")(define_insn "*thumb2_negsi2_short"[(set (match_operand:SI 0 "low_register_operand" "=l")(neg:SI (match_operand:SI 1 "low_register_operand" "l")))(clobber (reg:CC CC_REGNUM))]"TARGET_THUMB2 && reload_completed""neg%!\t%0, %1"[(set_attr "predicable" "yes")(set_attr "length" "2")])(define_insn "*orsi_notsi_si"[(set (match_operand:SI 0 "s_register_operand" "=r")(ior:SI (not:SI (match_operand:SI 2 "s_register_operand" "r"))(match_operand:SI 1 "s_register_operand" "r")))]"TARGET_THUMB2""orn%?\\t%0, %1, %2"[(set_attr "predicable" "yes")])(define_insn "*orsi_not_shiftsi_si"[(set (match_operand:SI 0 "s_register_operand" "=r")(ior:SI (not:SI (match_operator:SI 4 "shift_operator"[(match_operand:SI 2 "s_register_operand" "r")(match_operand:SI 3 "const_int_operand" "M")]))(match_operand:SI 1 "s_register_operand" "r")))]"TARGET_THUMB2""orn%?\\t%0, %1, %2%S4"[(set_attr "predicable" "yes")(set_attr "shift" "2")(set_attr "type" "alu_shift")])(define_peephole2[(set (match_operand:CC_NOOV 0 "cc_register" "")(compare:CC_NOOV (zero_extract:SI(match_operand:SI 1 "low_register_operand" "")(const_int 1)(match_operand:SI 2 "const_int_operand" ""))(const_int 0)))(match_scratch:SI 3 "l")(set (pc)(if_then_else (match_operator:CC_NOOV 4 "equality_operator"[(match_dup 0) (const_int 0)])(match_operand 5 "" "")(match_operand 6 "" "")))]"TARGET_THUMB2&& (INTVAL (operands[2]) >= 0 && INTVAL (operands[2]) < 32)"[(parallel [(set (match_dup 0)(compare:CC_NOOV (ashift:SI (match_dup 1) (match_dup 2))(const_int 0)))(clobber (match_dup 3))])(set (pc)(if_then_else (match_op_dup 4 [(match_dup 0) (const_int 0)])(match_dup 5) (match_dup 6)))]"operands[2] = GEN_INT (31 - INTVAL (operands[2]));operands[4] = gen_rtx_fmt_ee (GET_CODE (operands[4]) == NE ? LT : GE,VOIDmode, operands[0], const0_rtx);")(define_peephole2[(set (match_operand:CC_NOOV 0 "cc_register" "")(compare:CC_NOOV (zero_extract:SI(match_operand:SI 1 "low_register_operand" "")(match_operand:SI 2 "const_int_operand" "")(const_int 0))(const_int 0)))(match_scratch:SI 3 "l")(set (pc)(if_then_else (match_operator:CC_NOOV 4 "equality_operator"[(match_dup 0) (const_int 0)])(match_operand 5 "" "")(match_operand 6 "" "")))]"TARGET_THUMB2&& (INTVAL (operands[2]) > 0 && INTVAL (operands[2]) < 32)"[(parallel [(set (match_dup 0)(compare:CC_NOOV (ashift:SI (match_dup 1) (match_dup 2))(const_int 0)))(clobber (match_dup 3))])(set (pc)(if_then_else (match_op_dup 4 [(match_dup 0) (const_int 0)])(match_dup 5) (match_dup 6)))]"operands[2] = GEN_INT (32 - INTVAL (operands[2]));");; Define the subtract-one-and-jump insns so loop.c;; knows what to generate.(define_expand "doloop_end"[(use (match_operand 0 "" "")) ; loop pseudo(use (match_operand 1 "" "")) ; iterations; zero if unknown(use (match_operand 2 "" "")) ; max iterations(use (match_operand 3 "" "")) ; loop level(use (match_operand 4 "" ""))] ; label"TARGET_32BIT""{/* Currently SMS relies on the do-loop pattern to recognize loopswhere (1) the control part consists of all insns defining and/orusing a certain 'count' register and (2) the loop count can beadjusted by modifying this register prior to the loop.??? The possible introduction of a new block to initialize thenew IV can potentially affect branch optimizations. */if (optimize > 0 && flag_modulo_sched){rtx s0;rtx bcomp;rtx loc_ref;rtx cc_reg;rtx insn;rtx cmp;/* Only use this on innermost loops. */if (INTVAL (operands[3]) > 1)FAIL;if (GET_MODE (operands[0]) != SImode)FAIL;s0 = operands [0];if (TARGET_THUMB2)insn = emit_insn (gen_thumb2_addsi3_compare0 (s0, s0, GEN_INT (-1)));elseinsn = emit_insn (gen_addsi3_compare0 (s0, s0, GEN_INT (-1)));cmp = XVECEXP (PATTERN (insn), 0, 0);cc_reg = SET_DEST (cmp);bcomp = gen_rtx_NE (VOIDmode, cc_reg, const0_rtx);loc_ref = gen_rtx_LABEL_REF (VOIDmode, operands [4]);emit_jump_insn (gen_rtx_SET (VOIDmode, pc_rtx,gen_rtx_IF_THEN_ELSE (VOIDmode, bcomp,loc_ref, pc_rtx)));DONE;}elseFAIL;}")
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