src/compiler/x86-64/float.lisp

   1 ;;;; floating point support for x86-64
   2
   3 ;;;; This software is part of the SBCL system. See the README file for
   4 ;;;; more information.
   5 ;;;;
   6 ;;;; This software is derived from the CMU CL system, which was
   7 ;;;; written at Carnegie Mellon University and released into the
   8 ;;;; public domain. The software is in the public domain and is
   9 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
  10 ;;;; files for more information.
  11
  12 (in-package "SB!VM")
  13 \f
  14 (macrolet ((ea-for-xf-desc (tn slot)
  15              `(make-ea
  16                :qword :base ,tn
  17                :disp (- (* ,slot n-word-bytes)
  18                         other-pointer-lowtag))))
  19   (defun ea-for-df-desc (tn)
  20     (ea-for-xf-desc tn double-float-value-slot))
  21   ;; complex floats
  22   (defun ea-for-csf-data-desc (tn)
  23     (ea-for-xf-desc tn complex-single-float-data-slot))
  24   (defun ea-for-csf-real-desc (tn)
  25     (ea-for-xf-desc tn complex-single-float-data-slot))
  26   (defun ea-for-csf-imag-desc (tn)
  27     (ea-for-xf-desc tn (+ complex-single-float-data-slot 1/2)))
  28
  29   (defun ea-for-cdf-data-desc (tn)
  30     (ea-for-xf-desc tn complex-double-float-real-slot))
  31   (defun ea-for-cdf-real-desc (tn)
  32     (ea-for-xf-desc tn complex-double-float-real-slot))
  33   (defun ea-for-cdf-imag-desc (tn)
  34     (ea-for-xf-desc tn complex-double-float-imag-slot)))
  35
  36 (macrolet ((ea-for-xf-stack (tn kind)
  37              (declare (ignore kind))
  38              `(make-ea
  39                :qword :base rbp-tn
  40                :disp (frame-byte-offset (tn-offset ,tn)))))
  41   (defun ea-for-sf-stack (tn)
  42     (ea-for-xf-stack tn :single))
  43   (defun ea-for-df-stack (tn)
  44     (ea-for-xf-stack tn :double)))
  45
  46 ;;; complex float stack EAs
  47 (macrolet ((ea-for-cxf-stack (tn kind slot &optional base)
  48              `(make-ea
  49                :qword :base ,base
  50                :disp (frame-byte-offset
  51                       (+ (tn-offset ,tn)
  52                        (cond ((= (tn-offset ,base) rsp-offset)
  53                               sp->fp-offset)
  54                              (t 0))
  55                        (ecase ,kind
  56                          (:single
  57                             (ecase ,slot
  58                               (:real 0)
  59                               (:imag -1/2)))
  60                          (:double
  61                             (ecase ,slot
  62                               (:real 1)
  63                               (:imag 0)))))))))
  64   (defun ea-for-csf-data-stack (tn &optional (base rbp-tn))
  65     (ea-for-cxf-stack tn :single :real base))
  66   (defun ea-for-csf-real-stack (tn &optional (base rbp-tn))
  67     (ea-for-cxf-stack tn :single :real base))
  68   (defun ea-for-csf-imag-stack (tn &optional (base rbp-tn))
  69     (ea-for-cxf-stack tn :single :imag base))
  70
  71   (defun ea-for-cdf-data-stack (tn &optional (base rbp-tn))
  72     (ea-for-cxf-stack tn :double :real base))
  73   (defun ea-for-cdf-real-stack (tn &optional (base rbp-tn))
  74     (ea-for-cxf-stack tn :double :real base))
  75   (defun ea-for-cdf-imag-stack (tn &optional (base rbp-tn))
  76     (ea-for-cxf-stack tn :double :imag base)))
  77 \f
  78 ;;;; move functions
  79
  80 ;;; X is source, Y is destination.
  81
  82 (define-move-fun (load-fp-zero 1) (vop x y)
  83   ((fp-single-zero) (single-reg)
  84    (fp-double-zero) (double-reg)
  85    (fp-complex-single-zero) (complex-single-reg)
  86    (fp-complex-double-zero) (complex-double-reg))
  87   (identity x)
  88   (sc-case y
  89     ((single-reg complex-single-reg) (inst xorps y y))
  90     ((double-reg complex-double-reg) (inst xorpd y y))))
  91
  92 (define-move-fun (load-fp-immediate 1) (vop x y)
  93   ((fp-single-immediate) (single-reg)
  94    (fp-double-immediate) (double-reg)
  95    (fp-complex-single-immediate) (complex-single-reg)
  96    (fp-complex-double-immediate) (complex-double-reg))
  97   (let ((x (register-inline-constant (tn-value x))))
  98     (sc-case y
  99       (single-reg (inst movss y x))
 100       (double-reg (inst movsd y x))
 101       (complex-single-reg (inst movq y x))
 102       (complex-double-reg (inst movapd y x)))))
 103
 104 (define-move-fun (load-single 2) (vop x y)
 105   ((single-stack) (single-reg))
 106   (inst movss y (ea-for-sf-stack x)))
 107
 108 (define-move-fun (store-single 2) (vop x y)
 109   ((single-reg) (single-stack))
 110   (inst movss (ea-for-sf-stack y) x))
 111
 112 (define-move-fun (load-double 2) (vop x y)
 113   ((double-stack) (double-reg))
 114   (inst movsd y (ea-for-df-stack x)))
 115
 116 (define-move-fun (store-double 2) (vop x y)
 117   ((double-reg) (double-stack))
 118   (inst movsd  (ea-for-df-stack y) x))
 119
 120 (eval-when (:compile-toplevel :execute)
 121   (setf *read-default-float-format* 'single-float))
 122 \f
 123 ;;;; complex float move functions
 124
 125 ;;; X is source, Y is destination.
 126 (define-move-fun (load-complex-single 2) (vop x y)
 127   ((complex-single-stack) (complex-single-reg))
 128   (inst movq y (ea-for-csf-data-stack x)))
 129
 130 (define-move-fun (store-complex-single 2) (vop x y)
 131   ((complex-single-reg) (complex-single-stack))
 132   (inst movq (ea-for-csf-data-stack y) x))
 133
 134 (define-move-fun (load-complex-double 2) (vop x y)
 135   ((complex-double-stack) (complex-double-reg))
 136   (inst movupd y (ea-for-cdf-data-stack x)))
 137
 138 (define-move-fun (store-complex-double 2) (vop x y)
 139   ((complex-double-reg) (complex-double-stack))
 140   (inst movupd (ea-for-cdf-data-stack y) x))
 141 \f
 142 ;;;; move VOPs
 143
 144 ;;; float register to register moves
 145 (macrolet ((frob (vop sc)
 146              `(progn
 147                 (define-vop (,vop)
 148                   (:args (x :scs (,sc)
 149                             :target y
 150                             :load-if (not (location= x y))))
 151                   (:results (y :scs (,sc)
 152                                :load-if (not (location= x y))))
 153                   (:note "float move")
 154                   (:generator 0
 155                     (move y x)))
 156                 (define-move-vop ,vop :move (,sc) (,sc)))))
 157   (frob single-move single-reg)
 158   (frob double-move double-reg)
 159   (frob complex-single-move complex-single-reg)
 160   (frob complex-double-move complex-double-reg))
 161
 162 \f
 163 ;;; Move from float to a descriptor reg. allocating a new float
 164 ;;; object in the process.
 165 (define-vop (move-from-single)
 166   (:args (x :scs (single-reg) :to :save))
 167   (:results (y :scs (descriptor-reg)))
 168   (:note "float to pointer coercion")
 169   (:generator 4
 170     (inst movd (reg-in-size y :dword) x)
 171     (inst shl y 32)
 172     (inst or y single-float-widetag)))
 173
 174 (define-move-vop move-from-single :move
 175   (single-reg) (descriptor-reg))
 176
 177 (define-vop (move-from-double)
 178   (:args (x :scs (double-reg) :to :save))
 179   (:results (y :scs (descriptor-reg)))
 180   (:node-var node)
 181   (:note "float to pointer coercion")
 182   (:generator 13
 183      (with-fixed-allocation (y
 184                              double-float-widetag
 185                              double-float-size
 186                              node)
 187        (inst movsd (ea-for-df-desc y) x))))
 188 (define-move-vop move-from-double :move
 189   (double-reg) (descriptor-reg))
 190
 191 ;;; Move from a descriptor to a float register.
 192 (define-vop (move-to-single-reg)
 193    (:args (x :scs (descriptor-reg) :target tmp
 194              :load-if (not (sc-is x control-stack))))
 195    (:temporary (:sc unsigned-reg :from :argument :to :result) tmp)
 196    (:results (y :scs (single-reg)))
 197    (:note "pointer to float coercion")
 198    (:generator 2
 199      (sc-case x
 200        (descriptor-reg
 201         (move tmp x)
 202         (inst shr tmp 32)
 203         (inst movd y (reg-in-size tmp :dword)))
 204        (control-stack
 205         ;; When the single-float descriptor is in memory, the untagging
 206         ;; is done in the target XMM register. This is faster than going
 207         ;; through a general-purpose register and the code is smaller.
 208         (inst movq y x)
 209         (inst shufps y y #4r3331)))))
 210 (define-move-vop move-to-single-reg :move (descriptor-reg) (single-reg))
 211
 212 ;;; Move from a descriptor to a float stack.
 213 (define-vop (move-to-single-stack)
 214   (:args (x :scs (descriptor-reg) :target tmp))
 215   (:temporary (:sc unsigned-reg :from :argument :to :result) tmp)
 216   (:results (y :scs (single-stack)))
 217   (:note "pointer to float coercion")
 218   (:generator 2
 219     (move tmp x)
 220     (inst shr tmp 32)
 221     (let ((slot (make-ea :dword :base rbp-tn
 222                          :disp (frame-byte-offset (tn-offset y)))))
 223       (inst mov slot (reg-in-size tmp :dword)))))
 224 (define-move-vop move-to-single-stack :move (descriptor-reg) (single-stack))
 225
 226 (define-vop (move-to-double)
 227   (:args (x :scs (descriptor-reg)))
 228   (:results (y :scs (double-reg)))
 229   (:note "pointer to float coercion")
 230   (:generator 2
 231     (inst movsd y (ea-for-df-desc x))))
 232 (define-move-vop move-to-double :move (descriptor-reg) (double-reg))
 233
 234 \f
 235 ;;; Move from complex float to a descriptor reg. allocating a new
 236 ;;; complex float object in the process.
 237 (define-vop (move-from-complex-single)
 238   (:args (x :scs (complex-single-reg) :to :save))
 239   (:results (y :scs (descriptor-reg)))
 240   (:node-var node)
 241   (:note "complex float to pointer coercion")
 242   (:generator 13
 243      (with-fixed-allocation (y
 244                              complex-single-float-widetag
 245                              complex-single-float-size
 246                              node)
 247        (inst movq (ea-for-csf-data-desc y) x))))
 248 (define-move-vop move-from-complex-single :move
 249   (complex-single-reg) (descriptor-reg))
 250
 251 (define-vop (move-from-complex-double)
 252   (:args (x :scs (complex-double-reg) :to :save))
 253   (:results (y :scs (descriptor-reg)))
 254   (:node-var node)
 255   (:note "complex float to pointer coercion")
 256   (:generator 13
 257      (with-fixed-allocation (y
 258                              complex-double-float-widetag
 259                              complex-double-float-size
 260                              node)
 261        (inst movapd (ea-for-cdf-data-desc y) x))))
 262 (define-move-vop move-from-complex-double :move
 263   (complex-double-reg) (descriptor-reg))
 264
 265 ;;; Move from a descriptor to a complex float register.
 266 (macrolet ((frob (name sc format)
 267              `(progn
 268                 (define-vop (,name)
 269                   (:args (x :scs (descriptor-reg)))
 270                   (:results (y :scs (,sc)))
 271                   (:note "pointer to complex float coercion")
 272                   (:generator 2
 273                     ,(ecase format
 274                       (:single
 275                          '(inst movq y (ea-for-csf-data-desc x)))
 276                       (:double
 277                          '(inst movapd y (ea-for-cdf-data-desc x))))))
 278                 (define-move-vop ,name :move (descriptor-reg) (,sc)))))
 279   (frob move-to-complex-single complex-single-reg :single)
 280   (frob move-to-complex-double complex-double-reg :double))
 281 \f
 282 ;;;; the move argument vops
 283 ;;;;
 284 ;;;; Note these are also used to stuff fp numbers onto the c-call
 285 ;;;; stack so the order is different than the lisp-stack.
 286
 287 ;;; the general MOVE-ARG VOP
 288 (macrolet ((frob (name sc stack-sc format)
 289              `(progn
 290                 (define-vop (,name)
 291                   (:args (x :scs (,sc) :target y)
 292                          (fp :scs (any-reg)
 293                              :load-if (not (sc-is y ,sc))))
 294                   (:results (y))
 295                   (:note "float argument move")
 296                   (:generator ,(case format (:single 2) (:double 3) )
 297                     (sc-case y
 298                       (,sc
 299                        (move y x))
 300                       (,stack-sc
 301                        (if (= (tn-offset fp) esp-offset)
 302                            (let* ((offset (* (tn-offset y) n-word-bytes))
 303                                   (ea (make-ea :dword :base fp :disp offset)))
 304                              ,@(ecase format
 305                                       (:single '((inst movss ea x)))
 306                                       (:double '((inst movsd ea x)))))
 307                            (let ((ea (make-ea
 308                                       :dword :base fp
 309                                       :disp (frame-byte-offset (tn-offset y)))))
 310                              ,@(ecase format
 311                                  (:single '((inst movss ea x)))
 312                                  (:double '((inst movsd ea x))))))))))
 313                 (define-move-vop ,name :move-arg
 314                   (,sc descriptor-reg) (,sc)))))
 315   (frob move-single-float-arg single-reg single-stack :single)
 316   (frob move-double-float-arg double-reg double-stack :double))
 317
 318 ;;;; complex float MOVE-ARG VOP
 319 (macrolet ((frob (name sc stack-sc format)
 320              `(progn
 321                 (define-vop (,name)
 322                   (:args (x :scs (,sc) :target y)
 323                          (fp :scs (any-reg)
 324                              :load-if (not (sc-is y ,sc))))
 325                   (:results (y))
 326                   (:note "complex float argument move")
 327                   (:generator ,(ecase format (:single 2) (:double 3))
 328                     (sc-case y
 329                       (,sc
 330                        (move y x))
 331                       (,stack-sc
 332                        ,(ecase format
 333                           (:single
 334                              '(inst movq (ea-for-csf-data-stack y fp) x))
 335                           (:double
 336                              '(inst movupd (ea-for-cdf-data-stack y fp) x)))))))
 337                 (define-move-vop ,name :move-arg
 338                   (,sc descriptor-reg) (,sc)))))
 339   (frob move-complex-single-float-arg
 340         complex-single-reg complex-single-stack :single)
 341   (frob move-complex-double-float-arg
 342         complex-double-reg complex-double-stack :double))
 343
 344 (define-move-vop move-arg :move-arg
 345   (single-reg double-reg
 346    complex-single-reg complex-double-reg)
 347   (descriptor-reg))
 348
 349 \f
 350 ;;;; arithmetic VOPs
 351
 352 (define-vop (float-op)
 353   (:args (x) (y))
 354   (:results (r))
 355   (:policy :fast-safe)
 356   (:note "inline float arithmetic")
 357   (:vop-var vop)
 358   (:save-p :compute-only))
 359
 360 (macrolet ((frob (name comm-name sc constant-sc ptype)
 361              `(progn
 362                 (define-vop (,name float-op)
 363                   (:args (x :scs (,sc ,constant-sc)
 364                             :target r
 365                             :load-if (not (sc-is x ,constant-sc)))
 366                          (y :scs (,sc ,constant-sc)
 367                             :load-if (not (sc-is y ,constant-sc))))
 368                   (:results (r :scs (,sc)))
 369                   (:arg-types ,ptype ,ptype)
 370                   (:result-types ,ptype))
 371                 (define-vop (,comm-name float-op)
 372                   (:args (x :scs (,sc ,constant-sc)
 373                             :target r
 374                             :load-if (not (sc-is x ,constant-sc)))
 375                          (y :scs (,sc ,constant-sc)
 376                             :target r
 377                             :load-if (not (sc-is y ,constant-sc))))
 378                   (:results (r :scs (,sc)))
 379                   (:arg-types ,ptype ,ptype)
 380                   (:result-types ,ptype)))))
 381   (frob single-float-op single-float-comm-op
 382         single-reg fp-single-immediate single-float)
 383   (frob double-float-op double-float-comm-op
 384         double-reg fp-double-immediate double-float)
 385   (frob complex-single-float-op complex-single-float-comm-op
 386         complex-single-reg fp-complex-single-immediate
 387         complex-single-float)
 388   (frob complex-double-float-op complex-double-float-comm-op
 389         complex-double-reg fp-complex-double-immediate
 390         complex-double-float))
 391
 392 (macrolet ((generate (opinst commutative constant-sc load-inst)
 393              `(flet ((get-constant (tn &optional maybe-aligned)
 394                        (declare (ignorable maybe-aligned))
 395                        (let ((value (tn-value tn)))
 396                          ,(if (eq constant-sc 'fp-complex-single-immediate)
 397                               `(if maybe-aligned
 398                                    (register-inline-constant
 399                                     :aligned value)
 400                                    (register-inline-constant value))
 401                               `(register-inline-constant value)))))
 402                 (declare (ignorable #'get-constant))
 403                 (cond
 404                   ((location= x r)
 405                    (when (sc-is y ,constant-sc)
 406                      (setf y (get-constant y t)))
 407                    (inst ,opinst x y))
 408                   ((and ,commutative (location= y r))
 409                    (when (sc-is x ,constant-sc)
 410                      (setf x (get-constant x t)))
 411                    (inst ,opinst y x))
 412                   ((not (location= r y))
 413                    (if (sc-is x ,constant-sc)
 414                        (inst ,load-inst r (get-constant x))
 415                        (move r x))
 416                    (when (sc-is y ,constant-sc)
 417                      (setf y (get-constant y t)))
 418                    (inst ,opinst r y))
 419                   (t
 420                    (if (sc-is x ,constant-sc)
 421                        (inst ,load-inst tmp (get-constant x))
 422                        (move tmp x))
 423                    (inst ,opinst tmp y)
 424                    (move r tmp)))))
 425            (frob (op sinst sname scost dinst dname dcost commutative
 426                      &optional csinst csname cscost cdinst cdname cdcost)
 427              `(progn
 428                 (define-vop (,sname ,(if commutative
 429                                          'single-float-comm-op
 430                                          'single-float-op))
 431                   (:translate ,op)
 432                   (:temporary (:sc single-reg) tmp)
 433                   (:generator ,scost
 434                     (generate ,sinst ,commutative fp-single-immediate movss)))
 435                 (define-vop (,dname ,(if commutative
 436                                          'double-float-comm-op
 437                                          'double-float-op))
 438                   (:translate ,op)
 439                   (:temporary (:sc double-reg) tmp)
 440                   (:generator ,dcost
 441                     (generate ,dinst ,commutative fp-double-immediate movsd)))
 442                 ,(when csinst
 443                    `(define-vop (,csname
 444                                  ,(if commutative
 445                                       'complex-single-float-comm-op
 446                                       'complex-single-float-op))
 447                       (:translate ,op)
 448                       (:temporary (:sc complex-single-reg) tmp)
 449                       (:generator ,cscost
 450                         (generate ,csinst ,commutative
 451                                   fp-complex-single-immediate movq))))
 452                 ,(when cdinst
 453                    `(define-vop (,cdname
 454                                  ,(if commutative
 455                                       'complex-double-float-comm-op
 456                                       'complex-double-float-op))
 457                       (:translate ,op)
 458                       (:temporary (:sc complex-double-reg) tmp)
 459                       (:generator ,cdcost
 460                         (generate ,cdinst ,commutative
 461                                   fp-complex-double-immediate movapd)))))))
 462   (frob + addss +/single-float 2 addsd +/double-float 2 t
 463         addps +/complex-single-float 3 addpd +/complex-double-float 3)
 464   (frob - subss -/single-float 2 subsd -/double-float 2 nil
 465         subps -/complex-single-float 3 subpd -/complex-double-float 3)
 466   (frob * mulss */single-float 4 mulsd */double-float 5 t)
 467   (frob / divss //single-float 12 divsd //double-float 19 nil))
 468
 469 (macrolet ((frob (op cost commutativep
 470                      duplicate-inst op-inst real-move-inst complex-move-inst
 471                      real-sc real-constant-sc real-type
 472                      complex-sc complex-constant-sc complex-type
 473                      real-complex-name complex-real-name)
 474              (cond ((not duplicate-inst) ; simple case
 475                     `(flet ((load-into (r x)
 476                               (sc-case x
 477                                 (,real-constant-sc
 478                                  (inst ,real-move-inst r
 479                                        (register-inline-constant (tn-value x))))
 480                                 (,complex-constant-sc
 481                                  (inst ,complex-move-inst r
 482                                        (register-inline-constant (tn-value x))))
 483                                 (t (move r x)))))
 484                        ,(when real-complex-name
 485                           `(define-vop (,real-complex-name float-op)
 486                              (:translate ,op)
 487                              (:args (x :scs (,real-sc ,real-constant-sc)
 488                                        :target r
 489                                        :load-if (not (sc-is x ,real-constant-sc)))
 490                                     (y :scs (,complex-sc ,complex-constant-sc)
 491                                        ,@(when commutativep '(:target r))
 492                                        :load-if (not (sc-is y ,complex-constant-sc))))
 493                              (:arg-types ,real-type ,complex-type)
 494                              (:results (r :scs (,complex-sc)
 495                                           ,@(unless commutativep '(:from (:argument 0)))))
 496                              (:result-types ,complex-type)
 497                              (:generator ,cost
 498                                ,(when commutativep
 499                                   `(when (location= y r)
 500                                      (rotatef x y)))
 501                                (load-into r x)
 502                                (when (sc-is y ,real-constant-sc ,complex-constant-sc)
 503                                  (setf y (register-inline-constant
 504                                           :aligned (tn-value y))))
 505                                (inst ,op-inst r y))))
 506
 507                        ,(when complex-real-name
 508                           `(define-vop (,complex-real-name float-op)
 509                              (:translate ,op)
 510                              (:args (x :scs (,complex-sc ,complex-constant-sc)
 511                                        :target r
 512                                        :load-if (not (sc-is x ,complex-constant-sc)))
 513                                     (y :scs (,real-sc ,real-constant-sc)
 514                                        ,@(when commutativep '(:target r))
 515                                        :load-if (not (sc-is y ,real-constant-sc))))
 516                              (:arg-types ,complex-type ,real-type)
 517                              (:results (r :scs (,complex-sc)
 518                                           ,@(unless commutativep '(:from (:argument 0)))))
 519                              (:result-types ,complex-type)
 520                              (:generator ,cost
 521                                ,(when commutativep
 522                                   `(when (location= y r)
 523                                      (rotatef x y)))
 524                                (load-into r x)
 525                                (when (sc-is y ,real-constant-sc ,complex-constant-sc)
 526                                  (setf y (register-inline-constant
 527                                           :aligned (tn-value y))))
 528                                (inst ,op-inst r y))))))
 529                    (commutativep ; must duplicate, but commutative
 530                     `(progn
 531                        ,(when real-complex-name
 532                           `(define-vop (,real-complex-name float-op)
 533                              (:translate ,op)
 534                              (:args (x :scs (,real-sc ,real-constant-sc)
 535                                        :target dup
 536                                        :load-if (not (sc-is x ,real-constant-sc)))
 537                                     (y :scs (,complex-sc ,complex-constant-sc)
 538                                        :target r
 539                                        :to  :result
 540                                        :load-if (not (sc-is y ,complex-constant-sc))))
 541                              (:arg-types ,real-type ,complex-type)
 542                              (:temporary (:sc ,complex-sc :target r
 543                                           :from (:argument 0)
 544                                           :to   :result)
 545                                          dup)
 546                              (:results (r :scs (,complex-sc)))
 547                              (:result-types ,complex-type)
 548                              (:generator ,cost
 549                                (if (sc-is x ,real-constant-sc)
 550                                    (inst ,complex-move-inst dup
 551                                          (register-inline-constant
 552                                           (complex (tn-value x) (tn-value x))))
 553                                    (let ((real x))
 554                                      ,duplicate-inst))
 555                                 ;; safe: dup /= y
 556                                 (when (location= dup r)
 557                                   (rotatef dup y))
 558                                 (if (sc-is y ,complex-constant-sc)
 559                                     (inst ,complex-move-inst r
 560                                           (register-inline-constant (tn-value y)))
 561                                     (move r y))
 562                                 (when (sc-is dup ,complex-constant-sc)
 563                                   (setf dup (register-inline-constant
 564                                              :aligned (tn-value dup))))
 565                                 (inst ,op-inst r dup))))
 566
 567                        ,(when complex-real-name
 568                           `(define-vop (,complex-real-name float-op)
 569                              (:translate ,op)
 570                              (:args (x :scs (,complex-sc ,complex-constant-sc)
 571                                        :target r
 572                                        :to  :result
 573                                        :load-if (not (sc-is x ,complex-constant-sc)))
 574                                     (y :scs (,real-sc ,real-constant-sc)
 575                                        :target dup
 576                                        :load-if (not (sc-is y ,real-constant-sc))))
 577                              (:arg-types ,complex-type ,real-type)
 578                              (:temporary (:sc ,complex-sc :target r
 579                                           :from (:argument 1)
 580                                           :to :result)
 581                                          dup)
 582                              (:results (r :scs (,complex-sc)))
 583                              (:result-types ,complex-type)
 584                              (:generator ,cost
 585                                (if (sc-is y ,real-constant-sc)
 586                                    (inst ,complex-move-inst dup
 587                                          (register-inline-constant
 588                                           (complex (tn-value y) (tn-value y))))
 589                                    (let ((real y))
 590                                      ,duplicate-inst))
 591                                 (when (location= dup r)
 592                                   (rotatef x dup))
 593                                 (if (sc-is x ,complex-constant-sc)
 594                                     (inst ,complex-move-inst r
 595                                           (register-inline-constant (tn-value x)))
 596                                     (move r x))
 597                                 (when (sc-is dup ,complex-constant-sc)
 598                                   (setf dup (register-inline-constant
 599                                              :aligned (tn-value dup))))
 600                                 (inst ,op-inst r dup))))))
 601                    (t ; duplicate, not commutative
 602                     `(progn
 603                        ,(when real-complex-name
 604                           `(define-vop (,real-complex-name float-op)
 605                              (:translate ,op)
 606                              (:args (x :scs (,real-sc ,real-constant-sc)
 607                                        :target r
 608                                        :load-if (not (sc-is x ,real-constant-sc)))
 609                                     (y :scs (,complex-sc ,complex-constant-sc)
 610                                        :to :result
 611                                        :load-if (not (sc-is y ,complex-constant-sc))))
 612                              (:arg-types ,real-type ,complex-type)
 613                              (:results (r :scs (,complex-sc) :from (:argument 0)))
 614                              (:result-types ,complex-type)
 615                              (:generator ,cost
 616                                (if (sc-is x ,real-constant-sc)
 617                                    (inst ,complex-move-inst dup
 618                                          (register-inline-constant
 619                                           (complex (tn-value x) (tn-value x))))
 620                                    (let ((real x)
 621                                          (dup  r))
 622                                      ,duplicate-inst))
 623                                (when (sc-is y ,complex-constant-sc)
 624                                  (setf y (register-inline-constant
 625                                           :aligned (tn-value y))))
 626                                (inst ,op-inst r y))))
 627
 628                        ,(when complex-real-name
 629                           `(define-vop (,complex-real-name float-op)
 630                              (:translate ,op)
 631                              (:args (x :scs (,complex-sc)
 632                                        :target r
 633                                        :to :eval)
 634                                     (y :scs (,real-sc ,real-constant-sc)
 635                                        :target dup
 636                                        :load-if (not (sc-is y ,complex-constant-sc))))
 637                              (:arg-types ,complex-type ,real-type)
 638                              (:temporary (:sc ,complex-sc :from (:argument 1))
 639                                          dup)
 640                              (:results (r :scs (,complex-sc) :from :eval))
 641                              (:result-types ,complex-type)
 642                              (:generator ,cost
 643                                (if (sc-is y ,real-constant-sc)
 644                                    (setf dup (register-inline-constant
 645                                               :aligned (complex (tn-value y)
 646                                                                 (tn-value y))))
 647                                    (let ((real y))
 648                                      ,duplicate-inst))
 649                                (move r x)
 650                                (inst ,op-inst r dup))))))))
 651            (def-real-complex-op (op commutativep duplicatep
 652                                     single-inst single-real-complex-name single-complex-real-name single-cost
 653                                     double-inst double-real-complex-name double-complex-real-name double-cost)
 654                `(progn
 655                   (frob ,op ,single-cost ,commutativep
 656                         ,(and duplicatep
 657                               `(progn
 658                                  (move dup real)
 659                                  (inst unpcklps dup dup)))
 660                         ,single-inst movss movq
 661                         single-reg fp-single-immediate single-float
 662                         complex-single-reg fp-complex-single-immediate complex-single-float
 663                         ,single-real-complex-name ,single-complex-real-name)
 664                   (frob ,op ,double-cost ,commutativep
 665                         ,(and duplicatep
 666                               `(progn
 667                                  (move dup real)
 668                                  (inst unpcklpd dup dup)))
 669                         ,double-inst movsd movapd
 670                         double-reg fp-double-immediate double-float
 671                         complex-double-reg fp-complex-double-immediate complex-double-float
 672                         ,double-real-complex-name ,double-complex-real-name))))
 673   (def-real-complex-op + t nil
 674     addps +/real-complex-single-float +/complex-real-single-float 3
 675     addpd +/real-complex-double-float +/complex-real-double-float 4)
 676   (def-real-complex-op - nil nil
 677     subps -/real-complex-single-float -/complex-real-single-float 3
 678     subpd -/real-complex-double-float -/complex-real-double-float 4)
 679   (def-real-complex-op * t t
 680     mulps */real-complex-single-float */complex-real-single-float 4
 681     mulpd */real-complex-double-float */complex-real-double-float 5)
 682   (def-real-complex-op / nil t
 683     nil nil nil nil
 684     divpd nil //complex-real-double-float 19))
 685
 686 (define-vop (//complex-real-single-float float-op)
 687   (:translate /)
 688   (:args (x :scs (complex-single-reg fp-complex-single-immediate fp-complex-single-zero)
 689             :to (:result 0)
 690             :target r
 691             :load-if (not (sc-is x fp-complex-single-immediate fp-complex-single-zero)))
 692          (y :scs (single-reg fp-single-immediate fp-single-zero)
 693             :target dup
 694             :load-if (not (sc-is y fp-single-immediate fp-single-zero))))
 695   (:arg-types complex-single-float single-float)
 696   (:temporary (:sc complex-single-reg :from (:argument 1)) dup)
 697   (:results (r :scs (complex-single-reg)))
 698   (:result-types complex-single-float)
 699   (:generator 12
 700     (flet ((duplicate (x)
 701              (let ((word (ldb (byte 64 0)
 702                               (logior (ash (single-float-bits (imagpart x)) 32)
 703                                       (ldb (byte 32 0)
 704                                            (single-float-bits (realpart x)))))))
 705                (register-inline-constant :oword (logior (ash word 64) word)))))
 706       (sc-case y
 707         (fp-single-immediate
 708          (setf dup (duplicate (complex (tn-value y) (tn-value y)))))
 709         (fp-single-zero
 710          (inst xorps dup dup))
 711         (t (move dup y)
 712            (inst shufps dup dup #b00000000)))
 713       (sc-case x
 714         (fp-complex-single-immediate
 715          (inst movaps r (duplicate (tn-value x))))
 716         (fp-complex-single-zero
 717          (inst xorps r r))
 718         (t
 719          (move r x)
 720          (inst unpcklpd r r)))
 721       (inst divps r dup)
 722       (inst movq r r))))
 723
 724 ;; Complex multiplication
 725 ;; r := rx * ry - ix * iy
 726 ;; i := rx * iy + ix * ry
 727 ;;
 728 ;; Transpose for SIMDness
 729 ;;  rx*ry    rx*iy
 730 ;; -ix*iy   +ix*ry
 731 ;;
 732 ;;  [rx rx] * [ry iy]
 733 ;;+ [ix ix] * [-iy ry]
 734 ;;       [r i]
 735
 736 (macrolet ((define-complex-* (name cost type sc tmp-p &body body)
 737                `(define-vop (,name float-op)
 738                   (:translate *)
 739                   (:args (x :scs (,sc) :target r)
 740                          (y :scs (,sc) :target copy-y))
 741                   (:arg-types ,type ,type)
 742                   (:temporary (:sc ,sc) imag)
 743                   (:temporary (:sc ,sc :from :eval) copy-y)
 744                   ,@(when tmp-p
 745                       `((:temporary (:sc ,sc) xmm)))
 746                   (:results (r :scs (,sc) :from :eval))
 747                   (:result-types ,type)
 748                   (:generator ,cost
 749                     (when (or (location= x copy-y)
 750                               (location= y r))
 751                       (rotatef x y))
 752                     ,@body))))
 753   (define-complex-* */complex-single-float 20
 754     complex-single-float complex-single-reg t
 755     (inst xorps xmm xmm)
 756     (move r x)
 757     (inst unpcklps r r)
 758     (move imag r)
 759     (inst unpckhpd imag xmm)
 760     (inst unpcklpd r    xmm)
 761     (move copy-y y)  ; y == r only if y == x == r
 762     (setf y copy-y)
 763
 764     (inst mulps r y)
 765
 766     (inst shufps y y #b11110001)
 767     (inst xorps y (register-inline-constant :oword (ash 1 31)))
 768
 769     (inst mulps imag y)
 770     (inst addps r imag))
 771   (define-complex-* */complex-double-float 25
 772     complex-double-float complex-double-reg nil
 773     (move imag x)
 774     (move r x)
 775     (move copy-y y)
 776     (setf y copy-y)
 777     (inst unpcklpd r r)
 778     (inst unpckhpd imag imag)
 779
 780     (inst mulpd r y)
 781
 782     (inst shufpd y y #b01)
 783     (inst xorpd y (register-inline-constant :oword (ash 1 63)))
 784
 785     (inst mulpd imag y)
 786     (inst addpd r imag)))
 787
 788 (define-vop (fsqrt)
 789   (:args (x :scs (double-reg)))
 790   (:results (y :scs (double-reg)))
 791   (:translate %sqrt)
 792   (:policy :fast-safe)
 793   (:arg-types double-float)
 794   (:result-types double-float)
 795   (:note "inline float arithmetic")
 796   (:vop-var vop)
 797   (:save-p :compute-only)
 798   (:generator 1
 799      (unless (location= x y)
 800        (inst xorpd y y))
 801      (note-this-location vop :internal-error)
 802      (inst sqrtsd y x)))
 803 \f
 804 (macrolet ((frob ((name translate sc type) &body body)
 805              `(define-vop (,name)
 806                   (:args (x :scs (,sc) :target y))
 807                 (:results (y :scs (,sc)))
 808                 (:translate ,translate)
 809                 (:policy :fast-safe)
 810                 (:arg-types ,type)
 811                 (:result-types ,type)
 812                 (:note "inline float arithmetic")
 813                 (:vop-var vop)
 814                 (:save-p :compute-only)
 815                 (:generator 1
 816                   (note-this-location vop :internal-error)
 817                   (move y x)
 818                   ,@body))))
 819   (frob (%negate/double-float %negate double-reg double-float)
 820         (inst xorpd y (register-inline-constant :oword (ash 1 63))))
 821   (frob (%negate/complex-double-float %negate complex-double-reg complex-double-float)
 822         (inst xorpd y (register-inline-constant
 823                        :oword (logior (ash 1 127) (ash 1 63)))))
 824   (frob (conjugate/complex-double-float conjugate complex-double-reg complex-double-float)
 825         (inst xorpd y (register-inline-constant :oword (ash 1 127))))
 826   (frob (%negate/single-float %negate single-reg single-float)
 827         (inst xorps y (register-inline-constant :oword (ash 1 31))))
 828   (frob (%negate/complex-single-float %negate complex-single-reg complex-single-float)
 829         (inst xorps y (register-inline-constant
 830                        :oword (logior (ash 1 31) (ash 1 63)))))
 831   (frob (conjugate/complex-single-float conjugate complex-single-reg complex-single-float)
 832         (inst xorpd y (register-inline-constant :oword (ash 1 63))))
 833   (frob (abs/double-float abs  double-reg double-float)
 834         (inst andpd y (register-inline-constant :oword (ldb (byte 63 0) -1))))
 835   (frob (abs/single-float abs  single-reg single-float)
 836         (inst andps y (register-inline-constant :oword (ldb (byte 31 0) -1)))))
 837
 838 \f
 839 ;;;; comparison
 840
 841 (define-vop (float-compare)
 842   (:policy :fast-safe)
 843   (:vop-var vop)
 844   (:save-p :compute-only)
 845   (:note "inline float comparison"))
 846
 847 ;;; EQL
 848 (macrolet ((define-float-eql (name cost sc constant-sc type)
 849                `(define-vop (,name float-compare)
 850                   (:translate eql)
 851                   (:args (x :scs (,sc ,constant-sc)
 852                             :target mask
 853                             :load-if (not (sc-is x ,constant-sc)))
 854                          (y :scs (,sc ,constant-sc)
 855                             :target mask
 856                             :load-if (not (sc-is y ,constant-sc))))
 857                   (:arg-types ,type ,type)
 858                   (:temporary (:sc ,sc :from :eval) mask)
 859                   (:temporary (:sc dword-reg) bits)
 860                   (:conditional :e)
 861                   (:generator ,cost
 862                     (when (or (location= y mask)
 863                               (not (xmm-register-p x)))
 864                       (rotatef x y))
 865                     (aver (xmm-register-p x))
 866                     (move mask x)
 867                     (when (sc-is y ,constant-sc)
 868                       (setf y (register-inline-constant :aligned (tn-value y))))
 869                     (inst pcmpeqd mask y)
 870                     (inst movmskps bits mask)
 871                     (inst cmp (if (location= bits eax-tn) al-tn bits)
 872                           #b1111)))))
 873   (define-float-eql eql/single-float 4
 874     single-reg fp-single-immediate single-float)
 875   (define-float-eql eql/double-float 4
 876     double-reg fp-double-immediate double-float)
 877   (define-float-eql eql/complex-single-float 5
 878     complex-single-reg fp-complex-single-immediate complex-single-float)
 879   (define-float-eql eql/complex-double-float 5
 880     complex-double-reg fp-complex-double-immediate complex-double-float))
 881
 882 ;;; comiss and comisd can cope with one or other arg in memory: we
 883 ;;; could (should, indeed) extend these to cope with descriptor args
 884 ;;; and stack args
 885
 886 (define-vop (single-float-compare float-compare)
 887   (:args (x :scs (single-reg))
 888          (y :scs (single-reg single-stack fp-single-immediate)
 889             :load-if (not (sc-is y single-stack fp-single-immediate))))
 890   (:arg-types single-float single-float))
 891 (define-vop (double-float-compare float-compare)
 892   (:args (x :scs (double-reg))
 893          (y :scs (double-reg double-stack descriptor-reg fp-double-immediate)
 894             :load-if (not (sc-is y double-stack descriptor-reg fp-double-immediate))))
 895   (:arg-types double-float double-float))
 896
 897 (define-vop (=/single-float single-float-compare)
 898   (:translate =)
 899   (:args (x :scs (single-reg single-stack fp-single-immediate)
 900             :target xmm
 901             :load-if (not (sc-is x single-stack fp-single-immediate)))
 902          (y :scs (single-reg single-stack fp-single-immediate)
 903             :target xmm
 904             :load-if (not (sc-is y single-stack fp-single-immediate))))
 905   (:temporary (:sc single-reg :from :eval) xmm)
 906   (:info)
 907   (:conditional not :p :ne)
 908   (:vop-var vop)
 909   (:generator 3
 910     (when (or (location= y xmm)
 911               (and (not (xmm-register-p x))
 912                    (xmm-register-p y)))
 913       (rotatef x y))
 914     (sc-case x
 915       (single-reg (setf xmm x))
 916       (single-stack (inst movss xmm (ea-for-sf-stack x)))
 917       (fp-single-immediate
 918        (inst movss xmm (register-inline-constant (tn-value x)))))
 919     (sc-case y
 920       (single-stack
 921        (setf y (ea-for-sf-stack y)))
 922       (fp-single-immediate
 923        (setf y (register-inline-constant (tn-value y))))
 924       (t))
 925     (note-this-location vop :internal-error)
 926     (inst comiss xmm y)
 927     ;; if PF&CF, there was a NaN involved => not equal
 928     ;; otherwise, ZF => equal
 929     ))
 930
 931 (define-vop (=/double-float double-float-compare)
 932   (:translate =)
 933   (:args (x :scs (double-reg double-stack fp-double-immediate descriptor-reg)
 934             :target xmm
 935             :load-if (not (sc-is x double-stack fp-double-immediate descriptor-reg)))
 936          (y :scs (double-reg double-stack fp-double-immediate descriptor-reg)
 937             :target xmm
 938             :load-if (not (sc-is y double-stack fp-double-immediate descriptor-reg))))
 939   (:temporary (:sc double-reg :from :eval) xmm)
 940   (:info)
 941   (:conditional not :p :ne)
 942   (:vop-var vop)
 943   (:generator 3
 944     (when (or (location= y xmm)
 945               (and (not (xmm-register-p x))
 946                    (xmm-register-p y)))
 947       (rotatef x y))
 948     (sc-case x
 949       (double-reg
 950        (setf xmm x))
 951       (double-stack
 952        (inst movsd xmm (ea-for-df-stack x)))
 953       (fp-double-immediate
 954        (inst movsd xmm (register-inline-constant (tn-value x))))
 955       (descriptor-reg
 956        (inst movsd xmm (ea-for-df-desc x))))
 957     (sc-case y
 958       (double-stack
 959        (setf y (ea-for-df-stack y)))
 960       (fp-double-immediate
 961        (setf y (register-inline-constant (tn-value y))))
 962       (descriptor-reg
 963        (setf y (ea-for-df-desc y)))
 964       (t))
 965     (note-this-location vop :internal-error)
 966     (inst comisd xmm y)))
 967
 968 (macrolet ((define-complex-float-= (complex-complex-name complex-real-name real-complex-name
 969                                     real-sc real-constant-sc real-type
 970                                     complex-sc complex-constant-sc complex-type
 971                                     real-move-inst complex-move-inst
 972                                     cmp-inst mask-inst mask)
 973                `(progn
 974                   (define-vop (,complex-complex-name float-compare)
 975                     (:translate =)
 976                     (:args (x :scs (,complex-sc ,complex-constant-sc)
 977                               :target cmp
 978                               :load-if (not (sc-is x ,complex-constant-sc)))
 979                            (y :scs (,complex-sc ,complex-constant-sc)
 980                               :target cmp
 981                               :load-if (not (sc-is y ,complex-constant-sc))))
 982                     (:arg-types ,complex-type ,complex-type)
 983                     (:temporary (:sc ,complex-sc :from :eval) cmp)
 984                     (:temporary (:sc dword-reg) bits)
 985                     (:info)
 986                     (:conditional :e)
 987                     (:generator 3
 988                       (when (location= y cmp)
 989                         (rotatef x y))
 990                       (sc-case x
 991                         (,real-constant-sc
 992                          (inst ,real-move-inst cmp (register-inline-constant
 993                                                     (tn-value x))))
 994                         (,complex-constant-sc
 995                          (inst ,complex-move-inst cmp (register-inline-constant
 996                                                        (tn-value x))))
 997                         (t
 998                          (move cmp x)))
 999                       (when (sc-is y ,real-constant-sc ,complex-constant-sc)
1000                         (setf y (register-inline-constant :aligned (tn-value y))))
1001                       (note-this-location vop :internal-error)
1002                       (inst ,cmp-inst :eq cmp y)
1003                       (inst ,mask-inst bits cmp)
1004                       (inst cmp (if (location= bits eax-tn) al-tn bits)
1005                             ,mask)))
1006                   (define-vop (,complex-real-name ,complex-complex-name)
1007                     (:args (x :scs (,complex-sc ,complex-constant-sc)
1008                               :target cmp
1009                               :load-if (not (sc-is x ,complex-constant-sc)))
1010                            (y :scs (,real-sc ,real-constant-sc)
1011                               :target cmp
1012                               :load-if (not (sc-is y ,real-constant-sc))))
1013                     (:arg-types ,complex-type ,real-type))
1014                   (define-vop (,real-complex-name ,complex-complex-name)
1015                     (:args (x :scs (,real-sc ,real-constant-sc)
1016                               :target cmp
1017                               :load-if (not (sc-is x ,real-constant-sc)))
1018                            (y :scs (,complex-sc ,complex-constant-sc)
1019                               :target cmp
1020                               :load-if (not (sc-is y ,complex-constant-sc))))
1021                     (:arg-types ,real-type ,complex-type)))))
1022   (define-complex-float-= =/complex-single-float =/complex-real-single-float =/real-complex-single-float
1023     single-reg fp-single-immediate single-float
1024     complex-single-reg fp-complex-single-immediate complex-single-float
1025     movss movq cmpps movmskps #b1111)
1026   (define-complex-float-= =/complex-double-float =/complex-real-double-float =/real-complex-double-float
1027     double-reg fp-double-immediate double-float
1028     complex-double-reg fp-complex-double-immediate complex-double-float
1029     movsd movapd cmppd movmskpd #b11))
1030
1031 (macrolet ((define-</> (op single-name double-name &rest flags)
1032                `(progn
1033                   (define-vop (,double-name double-float-compare)
1034                     (:translate ,op)
1035                     (:info)
1036                     (:conditional ,@flags)
1037                     (:generator 3
1038                       (sc-case y
1039                         (double-stack
1040                          (setf y (ea-for-df-stack y)))
1041                         (descriptor-reg
1042                          (setf y (ea-for-df-desc y)))
1043                         (fp-double-immediate
1044                          (setf y (register-inline-constant (tn-value y))))
1045                         (t))
1046                       (inst comisd x y)))
1047                   (define-vop (,single-name single-float-compare)
1048                     (:translate ,op)
1049                     (:info)
1050                     (:conditional ,@flags)
1051                     (:generator 3
1052                       (sc-case y
1053                         (single-stack
1054                          (setf y (ea-for-sf-stack y)))
1055                         (fp-single-immediate
1056                          (setf y (register-inline-constant (tn-value y))))
1057                         (t))
1058                       (inst comiss x y))))))
1059   (define-</> < <single-float <double-float not :p :nc)
1060   (define-</> > >single-float >double-float not :p :na))
1061
1062 \f
1063 ;;;; conversion
1064
1065 (macrolet ((frob (name translate inst to-sc to-type)
1066              `(define-vop (,name)
1067                 (:args (x :scs (signed-stack signed-reg)))
1068                 (:results (y :scs (,to-sc)))
1069                 (:arg-types signed-num)
1070                 (:result-types ,to-type)
1071                 (:policy :fast-safe)
1072                 (:note "inline float coercion")
1073                 (:translate ,translate)
1074                 (:vop-var vop)
1075                 (:save-p :compute-only)
1076                 (:generator 5
1077                   (sc-case y
1078                     (single-reg (inst xorps y y))
1079                     (double-reg (inst xorpd y y)))
1080                   (note-this-location vop :internal-error)
1081                   (inst ,inst y x)))))
1082   (frob %single-float/signed %single-float cvtsi2ss single-reg single-float)
1083   (frob %double-float/signed %double-float cvtsi2sd double-reg double-float))
1084
1085 (macrolet ((frob (name translate inst from-scs from-type ea-func to-sc to-type)
1086              `(define-vop (,name)
1087                (:args (x :scs ,from-scs :target y))
1088                (:results (y :scs (,to-sc)))
1089                (:arg-types ,from-type)
1090                (:result-types ,to-type)
1091                (:policy :fast-safe)
1092                (:note "inline float coercion")
1093                (:translate ,translate)
1094                (:vop-var vop)
1095                (:save-p :compute-only)
1096                (:generator 2
1097                 (unless (location= x y)
1098                   (sc-case y
1099                     (single-reg (inst xorps y y))
1100                     (double-reg (inst xorpd y y))))
1101                 (note-this-location vop :internal-error)
1102                 (inst ,inst y (sc-case x
1103                                 (,(first from-scs) x)
1104                                 (,(second from-scs) (,ea-func x))))
1105                 ,(when (and (eq from-type 'double-float) ; if the input is wider
1106                             (eq to-type 'single-float))  ; than the output, clear
1107                    `(when (location= x y)                ; noise in the high part
1108                       (inst shufps y y #4r3330)))))))
1109   (frob %single-float/double-float %single-float cvtsd2ss
1110         (double-reg double-stack) double-float ea-for-df-stack
1111         single-reg single-float)
1112
1113   (frob %double-float/single-float %double-float cvtss2sd
1114         (single-reg single-stack) single-float ea-for-sf-stack
1115         double-reg double-float))
1116
1117 (macrolet ((frob (trans inst from-scs from-type ea-func)
1118              `(define-vop (,(symbolicate trans "/" from-type))
1119                (:args (x :scs ,from-scs))
1120                (:results (y :scs (signed-reg)))
1121                (:arg-types ,from-type)
1122                (:result-types signed-num)
1123                (:translate ,trans)
1124                (:policy :fast-safe)
1125                (:note "inline float truncate")
1126                (:vop-var vop)
1127                (:save-p :compute-only)
1128                (:generator 5
1129                  (inst ,inst y (sc-case x
1130                                  (,(first from-scs) x)
1131                                  (,(second from-scs) (,ea-func x))))))))
1132   (frob %unary-truncate/single-float cvttss2si
1133         (single-reg single-stack) single-float ea-for-sf-stack)
1134   (frob %unary-truncate/double-float cvttsd2si
1135         (double-reg double-stack) double-float ea-for-df-stack)
1136
1137   (frob %unary-round cvtss2si
1138         (single-reg single-stack) single-float ea-for-sf-stack)
1139   (frob %unary-round cvtsd2si
1140         (double-reg double-stack) double-float ea-for-df-stack))
1141
1142 (define-vop (make-single-float)
1143   (:args (bits :scs (signed-reg) :target res
1144                :load-if (not (or (and (sc-is bits signed-stack)
1145                                       (sc-is res single-reg))
1146                                  (and (sc-is bits signed-stack)
1147                                       (sc-is res single-stack)
1148                                       (location= bits res))))))
1149   (:results (res :scs (single-reg single-stack)))
1150   (:arg-types signed-num)
1151   (:result-types single-float)
1152   (:translate make-single-float)
1153   (:policy :fast-safe)
1154   (:vop-var vop)
1155   (:generator 4
1156     (sc-case res
1157        (single-stack
1158         (sc-case bits
1159           (signed-reg
1160            (inst mov res bits))
1161           (signed-stack
1162            (aver (location= bits res)))))
1163        (single-reg
1164         (sc-case bits
1165           (signed-reg
1166            (inst movd res (reg-in-size bits :dword)))
1167           (signed-stack
1168            (inst movss res
1169                  (make-ea :dword :base rbp-tn
1170                           :disp (frame-byte-offset (tn-offset bits))))))))))
1171
1172 (define-vop (make-single-float-c)
1173   (:results (res :scs (single-reg single-stack descriptor-reg)))
1174   (:arg-types (:constant (signed-byte 32)))
1175   (:result-types single-float)
1176   (:info bits)
1177   (:translate make-single-float)
1178   (:policy :fast-safe)
1179   (:vop-var vop)
1180   (:generator 1
1181     (sc-case res
1182        (single-stack
1183         (inst mov res bits))
1184        (single-reg
1185         (inst movss res (register-inline-constant :dword bits)))
1186        (descriptor-reg
1187         (inst mov res (logior (ash bits 32)
1188                               single-float-widetag))))))
1189
1190 (define-vop (make-double-float)
1191   (:args (hi-bits :scs (signed-reg))
1192          (lo-bits :scs (unsigned-reg)))
1193   (:results (res :scs (double-reg)))
1194   (:temporary (:sc unsigned-reg) temp)
1195   (:arg-types signed-num unsigned-num)
1196   (:result-types double-float)
1197   (:translate make-double-float)
1198   (:policy :fast-safe)
1199   (:vop-var vop)
1200   (:generator 2
1201     (move temp hi-bits)
1202     (inst shl temp 32)
1203     (inst or temp lo-bits)
1204     (inst movd res temp)))
1205
1206 (define-vop (make-double-float-c)
1207   (:results (res :scs (double-reg)))
1208   (:arg-types (:constant (signed-byte 32)) (:constant (unsigned-byte 32)))
1209   (:result-types double-float)
1210   (:info hi lo)
1211   (:translate make-double-float)
1212   (:policy :fast-safe)
1213   (:vop-var vop)
1214   (:generator 1
1215     (inst movsd res (register-inline-constant :qword (logior (ash hi 32) lo)))))
1216
1217 (define-vop (single-float-bits)
1218   (:args (float :scs (single-reg descriptor-reg)
1219                 :load-if (not (sc-is float single-stack))))
1220   (:results (bits :scs (signed-reg)))
1221   (:arg-types single-float)
1222   (:result-types signed-num)
1223   (:translate single-float-bits)
1224   (:policy :fast-safe)
1225   (:generator 4
1226      (sc-case float
1227        (single-reg
1228         (let ((dword-bits (reg-in-size bits :dword)))
1229           (inst movd dword-bits float)
1230           (inst movsxd bits dword-bits)))
1231        (single-stack
1232         (inst movsxd bits (make-ea :dword ; c.f. ea-for-sf-stack
1233                                    :base rbp-tn
1234                                    :disp (frame-byte-offset (tn-offset float)))))
1235        (descriptor-reg
1236         (move bits float)
1237         (inst sar bits 32)))))
1238
1239 (define-vop (double-float-high-bits)
1240   (:args (float :scs (double-reg descriptor-reg)
1241                 :load-if (not (sc-is float double-stack))))
1242   (:results (hi-bits :scs (signed-reg)))
1243   (:temporary (:sc signed-stack :from :argument :to :result) temp)
1244   (:arg-types double-float)
1245   (:result-types signed-num)
1246   (:translate double-float-high-bits)
1247   (:policy :fast-safe)
1248   (:vop-var vop)
1249   (:generator 5
1250      (sc-case float
1251        (double-reg
1252         (inst movsd temp float)
1253         (move hi-bits temp))
1254        (double-stack
1255         (loadw hi-bits ebp-tn (frame-word-offset (tn-offset float))))
1256        (descriptor-reg
1257         (loadw hi-bits float double-float-value-slot
1258                other-pointer-lowtag)))
1259      (inst sar hi-bits 32)))
1260
1261 (define-vop (double-float-low-bits)
1262   (:args (float :scs (double-reg descriptor-reg)
1263                 :load-if (not (sc-is float double-stack))))
1264   (:results (lo-bits :scs (unsigned-reg)))
1265   (:temporary (:sc signed-stack :from :argument :to :result) temp)
1266   (:arg-types double-float)
1267   (:result-types unsigned-num)
1268   (:translate double-float-low-bits)
1269   (:policy :fast-safe)
1270   (:vop-var vop)
1271   (:generator 5
1272      (let ((dword-lo-bits (reg-in-size lo-bits :dword)))
1273        (sc-case float
1274         (double-reg
1275          (inst movsd temp float)
1276          (inst mov dword-lo-bits
1277                (make-ea :dword :base rbp-tn
1278                         :disp (frame-byte-offset (tn-offset temp)))))
1279         (double-stack
1280          (inst mov dword-lo-bits
1281                (make-ea :dword :base rbp-tn
1282                         :disp (frame-byte-offset (tn-offset float)))))
1283         (descriptor-reg
1284          (inst mov dword-lo-bits
1285                (make-ea-for-object-slot-half float double-float-value-slot
1286                                              other-pointer-lowtag)))))))
1287
1288 \f
1289
1290 ;;;; complex float VOPs
1291
1292 (define-vop (make-complex-single-float)
1293   (:translate complex)
1294   (:args (real :scs (single-reg fp-single-zero)
1295                :target r
1296                :load-if (not (sc-is real fp-single-zero)))
1297          (imag :scs (single-reg fp-single-zero)
1298                :load-if (not (sc-is imag fp-single-zero))))
1299   (:arg-types single-float single-float)
1300   (:results (r :scs (complex-single-reg) :from (:argument 0)))
1301   (:result-types complex-single-float)
1302   (:note "inline complex single-float creation")
1303   (:policy :fast-safe)
1304   (:generator 5
1305     (cond ((sc-is real fp-single-zero)
1306            (inst xorps r r)
1307            (unless (sc-is imag fp-single-zero)
1308              (inst unpcklps r imag)))
1309           ((location= real imag)
1310            (move r real)
1311            (inst unpcklps r r))
1312           (t
1313            (move r real)
1314            (unless (sc-is imag fp-single-zero)
1315              (inst unpcklps r imag))))))
1316
1317 (define-vop (make-complex-double-float)
1318   (:translate complex)
1319   (:args (real :scs (double-reg fp-double-zero)
1320                :target r
1321                :load-if (not (sc-is real fp-double-zero)))
1322          (imag :scs (double-reg fp-double-zero)
1323                :load-if (not (sc-is imag fp-double-zero))))
1324   (:arg-types double-float double-float)
1325   (:results (r :scs (complex-double-reg) :from (:argument 0)))
1326   (:result-types complex-double-float)
1327   (:note "inline complex double-float creation")
1328   (:policy :fast-safe)
1329   (:generator 5
1330     (cond ((sc-is real fp-double-zero)
1331            (inst xorpd r r)
1332            (unless (sc-is imag fp-double-zero)
1333              (inst unpcklpd r imag)))
1334           ((location= real imag)
1335            (move r real)
1336            (inst unpcklpd r r))
1337           (t
1338            (move r real)
1339            (unless (sc-is imag fp-double-zero)
1340              (inst unpcklpd r imag))))))
1341
1342 (define-vop (complex-float-value)
1343   (:args (x :target r))
1344   (:temporary (:sc complex-double-reg) zero)
1345   (:results (r))
1346   (:variant-vars offset)
1347   (:policy :fast-safe)
1348   (:generator 3
1349     (cond ((sc-is x complex-double-reg)
1350            (move r x)
1351            (inst xorpd zero zero)
1352            (ecase offset
1353              (0 (inst unpcklpd r zero))
1354              (1 (inst unpckhpd r zero))))
1355           ((sc-is x complex-single-reg)
1356            (move r x)
1357            (ecase offset
1358              (0 (inst shufps r r #b11111100))
1359              (1 (inst shufps r r #b11111101))))
1360           ((sc-is r single-reg)
1361            (let ((ea (sc-case x
1362                        (complex-single-stack
1363                         (ecase offset
1364                           (0 (ea-for-csf-real-stack x))
1365                           (1 (ea-for-csf-imag-stack x))))
1366                        (descriptor-reg
1367                         (ecase offset
1368                           (0 (ea-for-csf-real-desc x))
1369                           (1 (ea-for-csf-imag-desc x)))))))
1370              (inst movss r ea)))
1371           ((sc-is r double-reg)
1372            (let ((ea (sc-case x
1373                        (complex-double-stack
1374                         (ecase offset
1375                           (0 (ea-for-cdf-real-stack x))
1376                           (1 (ea-for-cdf-imag-stack x))))
1377                        (descriptor-reg
1378                         (ecase offset
1379                           (0 (ea-for-cdf-real-desc x))
1380                           (1 (ea-for-cdf-imag-desc x)))))))
1381              (inst movsd r ea)))
1382           (t (error "COMPLEX-FLOAT-VALUE VOP failure")))))
1383
1384 (define-vop (realpart/complex-single-float complex-float-value)
1385   (:translate realpart)
1386   (:args (x :scs (complex-single-reg complex-single-stack descriptor-reg)
1387             :target r))
1388   (:arg-types complex-single-float)
1389   (:results (r :scs (single-reg)))
1390   (:result-types single-float)
1391   (:note "complex float realpart")
1392   (:variant 0))
1393
1394 (define-vop (realpart/complex-double-float complex-float-value)
1395   (:translate realpart)
1396   (:args (x :scs (complex-double-reg complex-double-stack descriptor-reg)
1397             :target r))
1398   (:arg-types complex-double-float)
1399   (:results (r :scs (double-reg)))
1400   (:result-types double-float)
1401   (:note "complex float realpart")
1402   (:variant 0))
1403
1404 (define-vop (imagpart/complex-single-float complex-float-value)
1405   (:translate imagpart)
1406   (:args (x :scs (complex-single-reg complex-single-stack descriptor-reg)
1407             :target r))
1408   (:arg-types complex-single-float)
1409   (:results (r :scs (single-reg)))
1410   (:result-types single-float)
1411   (:note "complex float imagpart")
1412   (:variant 1))
1413
1414 (define-vop (imagpart/complex-double-float complex-float-value)
1415   (:translate imagpart)
1416   (:args (x :scs (complex-double-reg complex-double-stack descriptor-reg)
1417             :target r))
1418   (:arg-types complex-double-float)
1419   (:results (r :scs (double-reg)))
1420   (:result-types double-float)
1421   (:note "complex float imagpart")
1422   (:variant 1))
1423
1424 \f
1425 ;;; hack dummy VOPs to bias the representation selection of their
1426 ;;; arguments towards a FP register, which can help avoid consing at
1427 ;;; inappropriate locations
1428 (defknown double-float-reg-bias (double-float) (values))
1429 (define-vop (double-float-reg-bias)
1430   (:translate double-float-reg-bias)
1431   (:args (x :scs (double-reg double-stack) :load-if nil))
1432   (:arg-types double-float)
1433   (:policy :fast-safe)
1434   (:note "inline dummy FP register bias")
1435   (:ignore x)
1436   (:generator 0))
1437 (defknown single-float-reg-bias (single-float) (values))
1438 (define-vop (single-float-reg-bias)
1439   (:translate single-float-reg-bias)
1440   (:args (x :scs (single-reg single-stack) :load-if nil))
1441   (:arg-types single-float)
1442   (:policy :fast-safe)
1443   (:note "inline dummy FP register bias")
1444   (:ignore x)
1445   (:generator 0))
1446
1447 (defknown swap-complex ((complex float)) (complex float)
1448     (foldable flushable movable always-translatable))
1449 (defoptimizer (swap-complex derive-type) ((x))
1450   (sb!c::lvar-type x))
1451 (defun swap-complex (x)
1452   (complex (imagpart x) (realpart x)))
1453 (define-vop (swap-complex-single-float)
1454   (:translate swap-complex)
1455   (:policy :fast-safe)
1456   (:args (x :scs (complex-single-reg) :target r))
1457   (:arg-types complex-single-float)
1458   (:results (r :scs (complex-single-reg)))
1459   (:result-types complex-single-float)
1460   (:generator 2
1461      (move r x)
1462      (inst shufps r r #b11110001)))
1463 (define-vop (swap-complex-double-float)
1464   (:translate swap-complex)
1465   (:policy :fast-safe)
1466   (:args (x :scs (complex-double-reg) :target r))
1467   (:arg-types complex-double-float)
1468   (:results (r :scs (complex-double-reg)))
1469   (:result-types complex-double-float)
1470   (:generator 2
1471      (move r x)
1472      (inst shufpd r r #b01)))