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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.2.2/] [gcc/] [config/] [m32c/] [bitops.md] - Rev 527
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;; Machine Descriptions for R8C/M16C/M32C
;; Copyright (C) 2005, 2007
;; 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_operand:QI 2 "" "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 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\";
}"
[(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" "Imb,Imw,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 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,Rqi,Rqi,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,Rqi,Rqi,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\";
}"
[(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\";
}"
[(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;"
)
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