| ;; Machine Descriptions for R8C/M16C/M32C |
| ;; Copyright (C) 2005-2025 Free Software Foundation, Inc. |
| ;; Contributed by Red Hat. |
| ;; |
| ;; 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/>. |
| |
| ;; Bit-wise operations (and, ior, xor, shift) |
| |
| ; On the R8C and M16C, "address" for bit instructions is usually (but |
| ; not always!) the *bit* address, not the *byte* address. This |
| ; confuses gcc, so we avoid cases where gcc would produce the wrong |
| ; code. We're left with absolute addresses and registers, and the odd |
| ; case of shifting a bit by a variable. |
| |
| ; On the M32C, "address" for bit instructions is a regular address, |
| ; and the bit number is stored in a separate field. Thus, we can let |
| ; gcc do more interesting things. However, the M32C cannot set all |
| ; the bits in a 16-bit register, which the R8C/M16C can do. |
| |
| ; However, it all means that we end up with two sets of patterns, one |
| ; for each chip. |
| |
| ;;---------------------------------------------------------------------- |
| |
| ;; First off, all the ways we can set one bit, other than plain IOR. |
| |
| (define_insn "bset_qi" |
| [(set (match_operand:QI 0 "memsym_operand" "+Si") |
| (ior:QI (subreg:QI (ashift:HI (const_int 1) |
| (subreg:QI (match_operand:HI 1 "a_qi_operand" "Raa") 0)) 0) |
| (match_dup 0)))] |
| "TARGET_A16" |
| "bset\t%0[%1]" |
| [(set_attr "flags" "n")] |
| ) |
| |
| (define_insn "bset_hi" |
| [(set (zero_extract:HI (match_operand:QI 0 "memsym_operand" "+Si") |
| (const_int 1) |
| (zero_extend:HI (subreg:QI (match_operand:HI 1 "a_qi_operand" "Raa") 0))) |
| (const_int 1))] |
| "TARGET_A16" |
| "bset\t%0[%1]" |
| [(set_attr "flags" "n")] |
| ) |
| |
| ;;---------------------------------------------------------------------- |
| |
| ;; Now all the ways we can clear one bit, other than plain AND. |
| |
| ; This is odd because the shift patterns use QI counts, but we can't |
| ; easily put QI in $aN without causing problems elsewhere. |
| (define_insn "bclr_qi" |
| [(set (zero_extract:HI (match_operand:QI 0 "memsym_operand" "+Si") |
| (const_int 1) |
| (zero_extend:HI (subreg:QI (match_operand:HI 1 "a_qi_operand" "Raa") 0))) |
| (const_int 0))] |
| "TARGET_A16" |
| "bclr\t%0[%1]" |
| [(set_attr "flags" "n")] |
| ) |
| |
| |
| ;;---------------------------------------------------------------------- |
| |
| ;; Now the generic patterns. |
| |
| (define_insn "andqi3_16" |
| [(set (match_operand:QI 0 "mra_operand" "=Sp,Rqi,RhlSd,RhlSd,??Rmm,??Rmm") |
| (and:QI (match_operand:QI 1 "mra_operand" "%0,0,0,0,0,0") |
| (match_operand:QI 2 "mrai_operand" "Imb,Imb,iRhlSd,?Rmm,iRhlSd,?Rmm")))] |
| "TARGET_A16" |
| "@ |
| bclr\t%B2,%0 |
| bclr\t%B2,%h0 |
| and.b\t%x2,%0 |
| and.b\t%x2,%0 |
| and.b\t%x2,%0 |
| and.b\t%x2,%0" |
| [(set_attr "flags" "n,n,sz,sz,sz,sz")] |
| ) |
| |
| (define_insn "andhi3_16" |
| [(set (match_operand:HI 0 "mra_operand" "=Sp,Sp,Rhi,RhiSd,??Rmm,RhiSd,??Rmm") |
| (and:HI (match_operand:HI 1 "mra_operand" "%0,0,0,0,0,0,0") |
| (match_operand:HI 2 "mrai_operand" "ImB,Imw,Imw,iRhiSd,?Rmm,?Rmm,iRhiSd")))] |
| "TARGET_A16" |
| "@ |
| |
| bclr\t%B2,%0 |
| bclr\t%B2-8,1+%0 |
| bclr\t%B2,%0 |
| and.w\t%X2,%0 |
| and.w\t%X2,%0 |
| and.w\t%X2,%0 |
| and.w\t%X2,%0" |
| [(set_attr "flags" "n,n,n,sz,sz,sz,sz")] |
| ) |
| |
| (define_insn "andsi3" |
| [(set (match_operand:SI 0 "mra_operand" "=RsiSd,RsiSd,??Rmm,??Rmm,??Rmm,RsiSd") |
| (and:SI (match_operand:SI 1 "mra_operand" "%0,0,0,0,0,0") |
| (match_operand:SI 2 "mrai_operand" "i,?Rmm,i,RsiSd,?Rmm,RsiSd")))] |
| "" |
| "* |
| switch (which_alternative) |
| { |
| case 0: |
| output_asm_insn (\"and.w %X2,%h0\",operands); |
| operands[2]= GEN_INT (INTVAL (operands[2]) >> 16); |
| return \"and.w %X2,%H0\"; |
| case 1: |
| return \"and.w %h2,%h0\;and.w %H2,%H0\"; |
| case 2: |
| output_asm_insn (\"and.w %X2,%h0\",operands); |
| operands[2]= GEN_INT (INTVAL (operands[2]) >> 16); |
| return \"and.w %X2,%H0\"; |
| case 3: |
| return \"and.w %h2,%h0\;and.w %H2,%H0\"; |
| case 4: |
| return \"and.w %h2,%h0\;and.w %H2,%H0\"; |
| case 5: |
| return \"and.w %h2,%h0\;and.w %H2,%H0\"; |
| default: |
| gcc_unreachable (); |
| }" |
| [(set_attr "flags" "x,x,x,x,x,x")] |
| ) |
| |
| |
| (define_insn "iorqi3_16" |
| [(set (match_operand:QI 0 "mra_operand" "=Sp,Rqi,RqiSd,??Rmm,RqiSd,??Rmm") |
| (ior:QI (match_operand:QI 1 "mra_operand" "%0,0,0,0,0,0") |
| (match_operand:QI 2 "mrai_operand" "Ilb,Ilb,iRhlSd,iRhlSd,?Rmm,?Rmm")))] |
| "TARGET_A16" |
| "@ |
| bset\t%B2,%0 |
| bset\t%B2,%h0 |
| or.b\t%x2,%0 |
| or.b\t%x2,%0 |
| or.b\t%x2,%0 |
| or.b\t%x2,%0" |
| [(set_attr "flags" "n,n,sz,sz,sz,sz")] |
| ) |
| |
| (define_insn "iorhi3_16" |
| [(set (match_operand:HI 0 "mra_operand" "=Sp,Sp,Rhi,RhiSd,RhiSd,??Rmm,??Rmm") |
| (ior:HI (match_operand:HI 1 "mra_operand" "%0,0,0,0,0,0,0") |
| (match_operand:HI 2 "mrai_operand" "Ilb,Ilw,Ilw,iRhiSd,?Rmm,iRhiSd,?Rmm")))] |
| "TARGET_A16" |
| "@ |
| bset %B2,%0 |
| bset\t%B2-8,1+%0 |
| bset\t%B2,%0 |
| or.w\t%X2,%0 |
| or.w\t%X2,%0 |
| or.w\t%X2,%0 |
| or.w\t%X2,%0" |
| [(set_attr "flags" "n,n,n,sz,sz,sz,sz")] |
| ) |
| |
| ; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| |
| (define_insn "andqi3_24" |
| [(set (match_operand:QI 0 "mra_operand" "=Sd,Rqi,RhlSd,RhlSd,??Rmm,??Rmm") |
| (and:QI (match_operand:QI 1 "mra_operand" "%0,0,0,0,0,0") |
| (match_operand:QI 2 "mrai_operand" "Imb,Imb,iRhlSd,?Rmm,iRhlSd,?Rmm")))] |
| "TARGET_A24" |
| "@ |
| bclr\t%B2,%0 |
| bclr\t%B2,%0 |
| and.b\t%x2,%0 |
| and.b\t%x2,%0 |
| and.b\t%x2,%0 |
| and.b\t%x2,%0" |
| [(set_attr "flags" "n,n,sz,sz,sz,sz")] |
| ) |
| |
| (define_insn "andhi3_24" |
| [(set (match_operand:HI 0 "mra_operand" "=Sd,Sd,?Rhl,?Rhl,RhiSd,??Rmm,RhiSd,??Rmm") |
| (and:HI (match_operand:HI 1 "mra_operand" "%0,0,0,0,0,0,0,0") |
| (match_operand:HI 2 "mrai_operand" "ImB,Imw,ImB,Imw,iRhiSd,?Rmm,?Rmm,iRhiSd")))] |
| "TARGET_A24" |
| "@ |
| bclr\t%B2,%0 |
| bclr\t%B2-8,1+%0 |
| bclr\t%B2,%h0 |
| bclr\t%B2-8,%H0 |
| and.w\t%X2,%0 |
| and.w\t%X2,%0 |
| and.w\t%X2,%0 |
| and.w\t%X2,%0" |
| [(set_attr "flags" "n,n,n,n,sz,sz,sz,sz")] |
| ) |
| |
| |
| |
| (define_insn "iorqi3_24" |
| [(set (match_operand:QI 0 "mra_operand" "=RqiSd,RqiSd,??Rmm,RqiSd,??Rmm") |
| (ior:QI (match_operand:QI 1 "mra_operand" "%0,0,0,0,0") |
| (match_operand:QI 2 "mrai_operand" "Ilb,iRhlSd,iRhlSd,?Rmm,?Rmm")))] |
| "TARGET_A24" |
| "@ |
| bset\t%B2,%0 |
| or.b\t%x2,%0 |
| or.b\t%x2,%0 |
| or.b\t%x2,%0 |
| or.b\t%x2,%0" |
| [(set_attr "flags" "n,sz,sz,sz,sz")] |
| ) |
| |
| (define_insn "iorhi3_24" |
| [(set (match_operand:HI 0 "mra_operand" "=Sd,Sd,?Rhl,?Rhl,RhiSd,RhiSd,??Rmm,??Rmm") |
| (ior:HI (match_operand:HI 1 "mra_operand" "%0,0,0,0,0,0,0,0") |
| (match_operand:HI 2 "mrai_operand" "Ilb,Ilw,Ilb,Ilw,iRhiSd,?Rmm,iRhiSd,?Rmm")))] |
| "TARGET_A24" |
| "@ |
| bset\t%B2,%0 |
| bset\t%B2-8,1+%0 |
| bset\t%B2,%h0 |
| bset\t%B2-8,%H0 |
| or.w\t%X2,%0 |
| or.w\t%X2,%0 |
| or.w\t%X2,%0 |
| or.w\t%X2,%0" |
| [(set_attr "flags" "n,n,n,n,sz,sz,sz,sz")] |
| ) |
| |
| |
| ; ---------------------------------------------------------------------- |
| |
| (define_expand "andqi3" |
| [(set (match_operand:QI 0 "mra_operand" "") |
| (and:QI (match_operand:QI 1 "mra_operand" "") |
| (match_operand:QI 2 "mrai_operand" "")))] |
| "" |
| "if (TARGET_A16) |
| emit_insn (gen_andqi3_16 (operands[0], operands[1], operands[2])); |
| else |
| emit_insn (gen_andqi3_24 (operands[0], operands[1], operands[2])); |
| DONE;" |
| ) |
| |
| (define_expand "andhi3" |
| [(set (match_operand:HI 0 "mra_operand" "") |
| (and:HI (match_operand:HI 1 "mra_operand" "") |
| (match_operand:HI 2 "mrai_operand" "")))] |
| "" |
| "if (TARGET_A16) |
| emit_insn (gen_andhi3_16 (operands[0], operands[1], operands[2])); |
| else |
| emit_insn (gen_andhi3_24 (operands[0], operands[1], operands[2])); |
| DONE;" |
| ) |
| |
| (define_expand "iorqi3" |
| [(set (match_operand:QI 0 "mra_operand" "") |
| (ior:QI (match_operand:QI 1 "mra_operand" "") |
| (match_operand:QI 2 "mrai_operand" "")))] |
| "" |
| "if (TARGET_A16) |
| emit_insn (gen_iorqi3_16 (operands[0], operands[1], operands[2])); |
| else |
| emit_insn (gen_iorqi3_24 (operands[0], operands[1], operands[2])); |
| DONE;" |
| ) |
| |
| (define_expand "iorhi3" |
| [(set (match_operand:HI 0 "mra_operand" "") |
| (ior:HI (match_operand:HI 1 "mra_operand" "") |
| (match_operand:HI 2 "mrai_operand" "")))] |
| "" |
| "if (TARGET_A16) |
| emit_insn (gen_iorhi3_16 (operands[0], operands[1], operands[2])); |
| else |
| emit_insn (gen_iorhi3_24 (operands[0], operands[1], operands[2])); |
| DONE;" |
| ) |
| |
| (define_insn "iorsi3" |
| [(set (match_operand:SI 0 "mra_operand" "=RsiSd,RsiSd,??Rmm,??Rmm,??Rmm,RsiSd") |
| (ior:SI (match_operand:SI 1 "mra_operand" "%0,0,0,0,0,0") |
| (match_operand:SI 2 "mrai_operand" "i,?Rmm,i,RsiSd,?Rmm,RsiSd")))] |
| "" |
| "* |
| switch (which_alternative) |
| { |
| case 0: |
| output_asm_insn (\"or.w %X2,%h0\",operands); |
| operands[2]= GEN_INT (INTVAL (operands[2]) >> 16); |
| return \"or.w %X2,%H0\"; |
| case 1: |
| return \"or.w %h2,%h0\;or.w %H2,%H0\"; |
| case 2: |
| output_asm_insn (\"or.w %X2,%h0\",operands); |
| operands[2]= GEN_INT (INTVAL (operands[2]) >> 16); |
| return \"or.w %X2,%H0\"; |
| case 3: |
| return \"or.w %h2,%h0\;or.w %H2,%H0\"; |
| case 4: |
| return \"or.w %h2,%h0\;or.w %H2,%H0\"; |
| case 5: |
| return \"or.w %h2,%h0\;or.w %H2,%H0\"; |
| default: |
| gcc_unreachable (); |
| }" |
| [(set_attr "flags" "x,x,x,x,x,x")] |
| ) |
| |
| (define_insn "xorqi3" |
| [(set (match_operand:QI 0 "mra_operand" "=RhlSd,RhlSd,??Rmm,??Rmm") |
| (xor:QI (match_operand:QI 1 "mra_operand" "%0,0,0,0") |
| (match_operand:QI 2 "mrai_operand" "iRhlSd,?Rmm,iRhlSd,?Rmm")))] |
| "" |
| "xor.b\t%x2,%0" |
| [(set_attr "flags" "sz,sz,sz,sz")] |
| ) |
| |
| (define_insn "xorhi3" |
| [(set (match_operand:HI 0 "mra_operand" "=RhiSd,RhiSd,??Rmm,??Rmm") |
| (xor:HI (match_operand:HI 1 "mra_operand" "%0,0,0,0") |
| (match_operand:HI 2 "mrai_operand" "iRhiSd,?Rmm,iRhiSd,?Rmm")))] |
| "" |
| "xor.w\t%X2,%0" |
| [(set_attr "flags" "sz,sz,sz,sz")] |
| ) |
| |
| (define_insn "xorsi3" |
| [(set (match_operand:SI 0 "mra_operand" "=RsiSd,RsiSd,??Rmm,??Rmm,??Rmm,RsiSd") |
| (xor:SI (match_operand:SI 1 "mra_operand" "%0,0,0,0,0,0") |
| (match_operand:SI 2 "mrai_operand" "i,?Rmm,i,RsiSd,?Rmm,RsiSd")))] |
| "" |
| "* |
| switch (which_alternative) |
| { |
| case 0: |
| output_asm_insn (\"xor.w %X2,%h0\",operands); |
| operands[2]= GEN_INT (INTVAL (operands[2]) >> 16); |
| return \"xor.w %X2,%H0\"; |
| case 1: |
| return \"xor.w %h2,%h0\;xor.w %H2,%H0\"; |
| case 2: |
| output_asm_insn (\"xor.w %X2,%h0\",operands); |
| operands[2]= GEN_INT (INTVAL (operands[2]) >> 16); |
| return \"xor.w %X2,%H0\"; |
| case 3: |
| return \"xor.w %h2,%h0\;xor.w %H2,%H0\"; |
| case 4: |
| return \"xor.w %h2,%h0\;xor.w %H2,%H0\"; |
| case 5: |
| return \"xor.w %h2,%h0\;xor.w %H2,%H0\"; |
| default: |
| gcc_unreachable (); |
| }" |
| [(set_attr "flags" "x,x,x,x,x,x")] |
| ) |
| |
| (define_insn "one_cmplqi2" |
| [(set (match_operand:QI 0 "mra_operand" "=RhlSd,??Rmm") |
| (not:QI (match_operand:QI 1 "mra_operand" "0,0")))] |
| "" |
| "not.b\t%0" |
| [(set_attr "flags" "sz,sz")] |
| ) |
| |
| (define_insn "one_cmplhi2" |
| [(set (match_operand:HI 0 "mra_operand" "=RhiSd,??Rmm") |
| (not:HI (match_operand:HI 1 "mra_operand" "0,0")))] |
| "" |
| "not.w\t%0" |
| [(set_attr "flags" "sz,sz")] |
| ) |
| |
| ; Optimizations using bit opcodes |
| |
| ; We need this because combine only looks at three insns at a time, |
| ; and the bclr_qi pattern uses four - mov, shift, not, and. GCC |
| ; should never expand this pattern, because it only shifts a constant |
| ; by a constant, so gcc should do that itself. |
| (define_insn "shift1_qi" |
| [(set (match_operand:QI 0 "mra_operand" "=Rqi") |
| (ashift:QI (const_int 1) |
| (match_operand 1 "const_int_operand" "In4")))] |
| "" |
| "mov.b\t#1,%0\n\tshl.b\t%1,%0" |
| ) |
| (define_insn "shift1_hi" |
| [(set (match_operand:HI 0 "mra_operand" "=Rhi") |
| (ashift:HI (const_int 1) |
| (match_operand 1 "const_int_operand" "In4")))] |
| "" |
| "mov.w\t#1,%0\n\tshl.w\t%1,%0" |
| ) |
| |
| ; Generic insert-bit expander, needed so that we can use the bit |
| ; opcodes for volatile bitfields. |
| |
| (define_expand "insv" |
| [(set (zero_extract:HI (match_operand:HI 0 "mra_operand" "") |
| (match_operand 1 "const_int_operand" "") |
| (match_operand 2 "const_int_operand" "")) |
| (match_operand:HI 3 "const_int_operand" ""))] |
| "" |
| "if (m32c_expand_insv (operands)) |
| FAIL; |
| DONE;" |
| ) |