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* doc/extend.texi (MIPS DSP Built-in Functions): Document the DSP
[pf3gnuchains/gcc-fork.git] / gcc / config / mips / mips.md
index a9b9add..149c7f4 100644 (file)
@@ -3,7 +3,7 @@
 ;;  1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
 ;;  Contributed by   A. Lichnewsky, lich@inria.inria.fr
 ;;  Changes by       Michael Meissner, meissner@osf.org
-;;  64 bit r4000 support by Ian Lance Taylor, ian@cygnus.com, and
+;;  64-bit r4000 support by Ian Lance Taylor, ian@cygnus.com, and
 ;;  Brendan Eich, brendan@microunity.com.
 
 ;; This file is part of GCC.
@@ -47,6 +47,8 @@
    (UNSPEC_MFHILO              26)
    (UNSPEC_TLS_LDM             27)
    (UNSPEC_TLS_GET_TP          28)
+   (UNSPEC_MFHC1               31)
+   (UNSPEC_MTHC1               32)
 
    (UNSPEC_ADDRESS_FIRST       100)
 
    (UNSPEC_CVT_PW_PS           205)
    (UNSPEC_CVT_PS_PW           206)
    (UNSPEC_MULR_PS             207)
+   (UNSPEC_ABS_PS              208)
 
-   (UNSPEC_RSQRT1              208)
-   (UNSPEC_RSQRT2              209)
-   (UNSPEC_RECIP1              210)
-   (UNSPEC_RECIP2              211)
-   (UNSPEC_SINGLE_CC           212)
-   (UNSPEC_SCC                 213)
+   (UNSPEC_RSQRT1              209)
+   (UNSPEC_RSQRT2              210)
+   (UNSPEC_RECIP1              211)
+   (UNSPEC_RECIP2              212)
+   (UNSPEC_SINGLE_CC           213)
+   (UNSPEC_SCC                 214)
 
    ;; MIPS DSP ASE Revision 0.98 3/24/2005
    (UNSPEC_ADDQ                        300)
    (UNSPEC_MTHLIP              365)
    (UNSPEC_WRDSP               366)
    (UNSPEC_RDDSP               367)
+
+   ;; MIPS DSP ASE REV 2 Revision 0.02 11/24/2006
+   (UNSPEC_ABSQ_S_QB           400)
+   (UNSPEC_ADDU_PH             401)
+   (UNSPEC_ADDU_S_PH           402)
+   (UNSPEC_ADDUH_QB            403)
+   (UNSPEC_ADDUH_R_QB          404)
+   (UNSPEC_APPEND              405)
+   (UNSPEC_BALIGN              406)
+   (UNSPEC_CMPGDU_EQ_QB                407)
+   (UNSPEC_CMPGDU_LT_QB                408)
+   (UNSPEC_CMPGDU_LE_QB                409)
+   (UNSPEC_DPA_W_PH            410)
+   (UNSPEC_DPS_W_PH            411)
+   (UNSPEC_MADD                        412)
+   (UNSPEC_MADDU               413)
+   (UNSPEC_MSUB                        414)
+   (UNSPEC_MSUBU               415)
+   (UNSPEC_MUL_PH              416)
+   (UNSPEC_MUL_S_PH            417)
+   (UNSPEC_MULQ_RS_W           418)
+   (UNSPEC_MULQ_S_PH           419)
+   (UNSPEC_MULQ_S_W            420)
+   (UNSPEC_MULSA_W_PH          421)
+   (UNSPEC_MULT                        422)
+   (UNSPEC_MULTU               423)
+   (UNSPEC_PRECR_QB_PH         424)
+   (UNSPEC_PRECR_SRA_PH_W      425)
+   (UNSPEC_PRECR_SRA_R_PH_W    426)
+   (UNSPEC_PREPEND             427)
+   (UNSPEC_SHRA_QB             428)
+   (UNSPEC_SHRA_R_QB           429)
+   (UNSPEC_SHRL_PH             430)
+   (UNSPEC_SUBU_PH             431)
+   (UNSPEC_SUBU_S_PH           432)
+   (UNSPEC_SUBUH_QB            433)
+   (UNSPEC_SUBUH_R_QB          434)
+   (UNSPEC_ADDQH_PH            435)
+   (UNSPEC_ADDQH_R_PH          436)
+   (UNSPEC_ADDQH_W             437)
+   (UNSPEC_ADDQH_R_W           438)
+   (UNSPEC_SUBQH_PH            439)
+   (UNSPEC_SUBQH_R_PH          440)
+   (UNSPEC_SUBQH_W             441)
+   (UNSPEC_SUBQH_R_W           442)
+   (UNSPEC_DPAX_W_PH           443)
+   (UNSPEC_DPSX_W_PH           444)
+   (UNSPEC_DPAQX_S_W_PH                445)
+   (UNSPEC_DPAQX_SA_W_PH       446)
+   (UNSPEC_DPSQX_S_W_PH                447)
+   (UNSPEC_DPSQX_SA_W_PH       448)
   ]
 )
 
 ;; Attribute describing the processor.  This attribute must match exactly
 ;; with the processor_type enumeration in mips.h.
 (define_attr "cpu"
-  "r3000,4kc,4kp,5kc,5kf,20kc,24k,24kx,m4k,r3900,r6000,r4000,r4100,r4111,r4120,r4130,r4300,r4600,r4650,r5000,r5400,r5500,r7000,r8000,r9000,sb1,sb1a,sr71000"
+  "r3000,4kc,4kp,5kc,5kf,20kc,24kc,24kf,24kx,m4k,r3900,r6000,r4000,r4100,r4111,r4120,r4130,r4300,r4600,r4650,r5000,r5400,r5500,r7000,r8000,r9000,sb1,sb1a,sr71000"
   (const (symbol_ref "mips_tune")))
 
 ;; The type of hardware hazard associated with this instruction.
 ;; These processors have PRId values of 0x00004220 and 0x00004300,
 ;; respectively.
 
-(define_expand "mul<mode>3"
-  [(set (match_operand:GPR 0 "register_operand")
-       (mult:GPR (match_operand:GPR 1 "register_operand")
-                 (match_operand:GPR 2 "register_operand")))]
+(define_expand "mulsi3"
+  [(set (match_operand:SI 0 "register_operand")
+       (mult:SI (match_operand:SI 1 "register_operand")
+                (match_operand:SI 2 "register_operand")))]
   ""
 {
-  if (GENERATE_MULT3_<MODE>)
-    emit_insn (gen_mul<mode>3_mult3 (operands[0], operands[1], operands[2]));
-  else if (!TARGET_FIX_R4000)
-    emit_insn (gen_mul<mode>3_internal (operands[0], operands[1],
-                                       operands[2]));
+  if (ISA_HAS_MUL3)
+    emit_insn (gen_mulsi3_mult3 (operands[0], operands[1], operands[2]));
+  else if (TARGET_FIX_R4000)
+    emit_insn (gen_mulsi3_r4000 (operands[0], operands[1], operands[2]));
   else
-    emit_insn (gen_mul<mode>3_r4000 (operands[0], operands[1], operands[2]));
+    emit_insn (gen_mulsi3_internal (operands[0], operands[1], operands[2]));
+  DONE;
+})
+
+(define_expand "muldi3"
+  [(set (match_operand:DI 0 "register_operand")
+       (mult:DI (match_operand:DI 1 "register_operand")
+                (match_operand:DI 2 "register_operand")))]
+  "TARGET_64BIT"
+{
+  if (TARGET_FIX_R4000)
+    emit_insn (gen_muldi3_r4000 (operands[0], operands[1], operands[2]));
+  else
+    emit_insn (gen_muldi3_internal (operands[0], operands[1], operands[2]));
   DONE;
 })
 
                 (match_operand:SI 2 "register_operand" "d,d")))
    (clobber (match_scratch:SI 3 "=h,h"))
    (clobber (match_scratch:SI 4 "=l,X"))]
-  "GENERATE_MULT3_SI"
+  "ISA_HAS_MUL3"
 {
   if (which_alternative == 1)
     return "mult\t%1,%2";
-  if (TARGET_MAD
-      || TARGET_MIPS5400
-      || TARGET_MIPS5500
-      || TARGET_MIPS7000
-      || TARGET_MIPS9000
-      || ISA_MIPS32
-      || ISA_MIPS32R2
-      || ISA_MIPS64)
-    return "mul\t%0,%1,%2";
-  return "mult\t%0,%1,%2";
+  if (TARGET_MIPS3900)
+    return "mult\t%0,%1,%2";
+  return "mul\t%0,%1,%2";
 }
   [(set_attr "type" "imul3,imul")
    (set_attr "mode" "SI")])
 
-(define_insn "muldi3_mult3"
-  [(set (match_operand:DI 0 "register_operand" "=d")
-       (mult:DI (match_operand:DI 1 "register_operand" "d")
-                (match_operand:DI 2 "register_operand" "d")))
-   (clobber (match_scratch:DI 3 "=h"))
-   (clobber (match_scratch:DI 4 "=l"))]
-  "TARGET_64BIT && GENERATE_MULT3_DI"
-  "dmult\t%0,%1,%2"
-  [(set_attr "type" "imul3")
-   (set_attr "mode" "DI")])
-
 ;; If a register gets allocated to LO, and we spill to memory, the reload
 ;; will include a move from LO to a GPR.  Merge it into the multiplication
 ;; if it can set the GPR directly.
         (clobber (scratch:SI))])
    (set (match_operand:SI 4 "register_operand")
        (unspec [(match_dup 0) (match_dup 3)] UNSPEC_MFHILO))]
-  "GENERATE_MULT3_SI && peep2_reg_dead_p (2, operands[0])"
+  "ISA_HAS_MUL3 && peep2_reg_dead_p (2, operands[0])"
   [(parallel
        [(set (match_dup 4)
             (mult:SI (match_dup 1)
         (clobber (match_operand:SI 3 "register_operand"))])
    (set (match_operand:SI 4 "register_operand")
        (unspec:SI [(match_dup 0) (match_dup 3)] UNSPEC_MFHILO))]
-  "ISA_HAS_MACC && !GENERATE_MULT3_SI"
+  "ISA_HAS_MACC && !ISA_HAS_MUL3"
   [(set (match_dup 0)
        (const_int 0))
    (parallel
             (match_operand:SI 4 "macc_msac_operand"))
        (clobber (match_operand:SI 5 "register_operand"))
        (clobber (match_dup 1))])]
-  "GENERATE_MULT3_SI
+  "ISA_HAS_MUL3
    && true_regnum (operands[1]) == LO_REGNUM
    && peep2_reg_dead_p (2, operands[1])
    && GP_REG_P (true_regnum (operands[3]))"
    (match_dup 0)
    (set (match_operand:SI 5 "register_operand")
        (unspec:SI [(match_dup 1) (match_dup 4)] UNSPEC_MFHILO))]
-  "GENERATE_MULT3_SI && peep2_reg_dead_p (3, operands[1])"
+  "ISA_HAS_MUL3 && peep2_reg_dead_p (3, operands[1])"
   [(parallel [(set (match_dup 0)
                   (match_dup 6))
              (clobber (match_dup 4))
   [(set (match_operand:DI 0 "register_operand" "=x")
        (mult:DI (any_extend:DI (match_operand:SI 1 "register_operand" "d"))
                 (any_extend:DI (match_operand:SI 2 "register_operand" "d"))))]
-  "!TARGET_64BIT && !TARGET_FIX_R4000"
+  "!TARGET_64BIT && !TARGET_FIX_R4000 && !TARGET_DSPR2"
   "mult<u>\t%1,%2"
   [(set_attr "type" "imul")
    (set_attr "mode" "SI")])
   [(set_attr "type" "imul")
    (set_attr "mode" "DI")])
 
-;; The R4650 supports a 32 bit multiply/ 64 bit accumulate
-;; instruction.  The HI/LO registers are used as a 64 bit accumulator.
+;; The R4650 supports a 32-bit multiply/ 64-bit accumulate
+;; instruction.  The HI/LO registers are used as a 64-bit accumulator.
 
 (define_insn "madsi"
   [(set (match_operand:SI 0 "register_operand" "+l")
                              (match_operand:ANYF 2 "register_operand" "f"))
                   (match_operand:ANYF 3 "register_operand" "f"))))]
   "ISA_HAS_NMADD_NMSUB && TARGET_FUSED_MADD
-   && HONOR_SIGNED_ZEROS (<MODE>mode)"
+   && HONOR_SIGNED_ZEROS (<MODE>mode)
+   && !HONOR_NANS (<MODE>mode)"
   "nmadd.<fmt>\t%0,%3,%1,%2"
   [(set_attr "type" "fmadd")
    (set_attr "mode" "<UNITMODE>")])
                    (match_operand:ANYF 2 "register_operand" "f"))
         (match_operand:ANYF 3 "register_operand" "f")))]
   "ISA_HAS_NMADD_NMSUB && TARGET_FUSED_MADD
-   && !HONOR_SIGNED_ZEROS (<MODE>mode)"
+   && !HONOR_SIGNED_ZEROS (<MODE>mode)
+   && !HONOR_NANS (<MODE>mode)"
   "nmadd.<fmt>\t%0,%3,%1,%2"
   [(set_attr "type" "fmadd")
    (set_attr "mode" "<UNITMODE>")])
                              (match_operand:ANYF 3 "register_operand" "f"))
                   (match_operand:ANYF 1 "register_operand" "f"))))]
   "ISA_HAS_NMADD_NMSUB && TARGET_FUSED_MADD
-   && HONOR_SIGNED_ZEROS (<MODE>mode)"
+   && HONOR_SIGNED_ZEROS (<MODE>mode)
+   && !HONOR_NANS (<MODE>mode)"
   "nmsub.<fmt>\t%0,%1,%2,%3"
   [(set_attr "type" "fmadd")
    (set_attr "mode" "<UNITMODE>")])
         (mult:ANYF (match_operand:ANYF 2 "register_operand" "f")
                    (match_operand:ANYF 3 "register_operand" "f"))))]
   "ISA_HAS_NMADD_NMSUB && TARGET_FUSED_MADD
-   && !HONOR_SIGNED_ZEROS (<MODE>mode)"
+   && !HONOR_SIGNED_ZEROS (<MODE>mode)
+   && !HONOR_NANS (<MODE>mode)"
   "nmsub.<fmt>\t%0,%1,%2,%3"
   [(set_attr "type" "fmadd")
    (set_attr "mode" "<UNITMODE>")])
 ;; Do not use the integer abs macro instruction, since that signals an
 ;; exception on -2147483648 (sigh).
 
+;; abs.fmt is an arithmetic instruction and treats all NaN inputs as
+;; invalid; it does not clear their sign bits.  We therefore can't use
+;; abs.fmt if the signs of NaNs matter.
+
 (define_insn "abs<mode>2"
   [(set (match_operand:ANYF 0 "register_operand" "=f")
        (abs:ANYF (match_operand:ANYF 1 "register_operand" "f")))]
-  ""
+  "!HONOR_NANS (<MODE>mode)"
   "abs.<fmt>\t%0,%1"
   [(set_attr "type" "fabs")
    (set_attr "mode" "<UNITMODE>")])
   [(set_attr "type"    "arith")
    (set_attr "mode"    "DI")])
 
+;; neg.fmt is an arithmetic instruction and treats all NaN inputs as
+;; invalid; it does not flip their sign bit.  We therefore can't use
+;; neg.fmt if the signs of NaNs matter.
+
 (define_insn "neg<mode>2"
   [(set (match_operand:ANYF 0 "register_operand" "=f")
        (neg:ANYF (match_operand:ANYF 1 "register_operand" "f")))]
-  ""
+  "!HONOR_NANS (<MODE>mode)"
   "neg.<fmt>\t%0,%1"
   [(set_attr "type" "fneg")
    (set_attr "mode" "<UNITMODE>")])
 (define_insn "*movdi_32bit"
   [(set (match_operand:DI 0 "nonimmediate_operand" "=d,d,d,m,*a,*d,*B*C*D,*B*C*D,*d,*m")
        (match_operand:DI 1 "move_operand" "d,i,m,d,*J*d,*a,*d,*m,*B*C*D,*B*C*D"))]
-  "!TARGET_64BIT && !TARGET_MIPS16
+  "!TARGET_64BIT && !TARGET_FLOAT64 && !TARGET_MIPS16
    && (register_operand (operands[0], DImode)
        || reg_or_0_operand (operands[1], DImode))"
   { return mips_output_move (operands[0], operands[1]); }
    (set_attr "mode"    "DI")
    (set_attr "length"   "8,16,*,*,8,8,8,*,8,*")])
 
+(define_insn "*movdi_gp32_fp64"
+  [(set (match_operand:DI 0 "nonimmediate_operand" "=d,d,d,m,*a,*d,*f,*f,*f,*d,*m")
+       (match_operand:DI 1 "move_operand" "d,i,m,d,*J*d,*a,*f,*J*d,*m,*f,*f"))]
+  "!TARGET_64BIT && TARGET_FLOAT64 && !TARGET_MIPS16
+   && (register_operand (operands[0], DImode)
+       || reg_or_0_operand (operands[1], DImode))"
+  { return mips_output_move (operands[0], operands[1]); }
+  [(set_attr "type"    "arith,arith,load,store,mthilo,mfhilo,fmove,xfer,fpload,xfer,fpstore")
+   (set_attr "mode"    "DI")
+   (set_attr "length"   "8,16,*,*,8,8,4,8,*,8,*")])
+
 (define_insn "*movdi_32bit_mips16"
   [(set (match_operand:DI 0 "nonimmediate_operand" "=d,y,d,d,d,d,m,*d")
        (match_operand:DI 1 "move_operand" "d,d,y,K,N,m,d,*x"))]
 ;; the sum of two general registers.  We use two versions for each of
 ;; these four instructions: one where the two general registers are
 ;; SImode, and one where they are DImode.  This is because general
-;; registers will be in SImode when they hold 32 bit values, but,
-;; since the 32 bit values are always sign extended, the [ls][wd]xc1
+;; registers will be in SImode when they hold 32-bit values, but,
+;; since the 32-bit values are always sign extended, the [ls][wd]xc1
 ;; instructions will still work correctly.
 
 ;; ??? Perhaps it would be better to support these instructions by
    (set_attr "mode"    "DF")
    (set_attr "length"  "4,4,*,*,*,4,4,4,*,*")])
 
+;; This pattern applies to both !TARGET_FLOAT64 and TARGET_FLOAT64.
 (define_insn "*movdf_hardfloat_32bit"
   [(set (match_operand:DF 0 "nonimmediate_operand" "=f,f,f,m,m,*f,*d,*d,*d,*m")
        (match_operand:DF 1 "move_operand" "f,G,m,f,G,*d,*f,*d*G,*m,*d"))]
   [(set_attr "type"    "xfer,fpstore")
    (set_attr "mode"    "SF")])
 
+;; Move operand 1 to the high word of operand 0 using mthc1, preserving the
+;; value in the low word.
+(define_insn "mthc1"
+  [(set (match_operand:DF 0 "register_operand" "=f")
+       (unspec:DF [(match_operand:SI 1 "general_operand" "dJ")
+                   (match_operand:DF 2 "register_operand" "0")]
+                   UNSPEC_MTHC1))]
+  "TARGET_HARD_FLOAT && !TARGET_64BIT && ISA_HAS_MXHC1"
+  "mthc1\t%z1,%0"
+  [(set_attr "type"    "xfer")
+   (set_attr "mode"    "SF")])
+
+;; Move high word of operand 1 to operand 0 using mfhc1.  The corresponding
+;; low-word move is done in the normal way.
+(define_insn "mfhc1"
+  [(set (match_operand:SI 0 "register_operand" "=d")
+       (unspec:SI [(match_operand:DF 1 "register_operand" "f")]
+                   UNSPEC_MFHC1))]
+  "TARGET_HARD_FLOAT && !TARGET_64BIT && ISA_HAS_MXHC1"
+  "mfhc1\t%0,%1"
+  [(set_attr "type"    "xfer")
+   (set_attr "mode"    "SF")])
+
 ;; Insn to initialize $gp for n32/n64 abicalls.  Operand 0 is the offset
 ;; of _gp from the start of this function.  Operand 1 is the incoming
 ;; function address.
   [(set (match_operand:GPR 0 "register_operand" "=d")
        (rotatert:GPR (match_operand:GPR 1 "register_operand" "d")
                      (match_operand:SI 2 "arith_operand" "dI")))]
-  "ISA_HAS_ROTR_<MODE>"
+  "ISA_HAS_ROR"
 {
   if (GET_CODE (operands[2]) == CONST_INT)
     gcc_assert (INTVAL (operands[2]) >= 0
 ; The MIPS DSP Instructions.
 
 (include "mips-dsp.md")
+
+; The MIPS DSP REV 2 Instructions.
+
+(include "mips-dspr2.md")