(+ (tn-offset ,tn)
(cond ((= (tn-offset ,base) rsp-offset)
sp->fp-offset)
- ((= (tn-offset ,base) rbp-offset)
- 0)
- (t (error "Unexpected offset.")))
+ (t 0))
(ecase ,kind
(:single
(ecase ,slot
(double-reg) (descriptor-reg))
;;; Move from a descriptor to a float register.
-(define-vop (move-to-single)
+(define-vop (move-to-single-reg)
+ (:args (x :scs (descriptor-reg) :target tmp
+ :load-if (not (sc-is x control-stack))))
+ (:temporary (:sc unsigned-reg :from :argument :to :result) tmp)
+ (:results (y :scs (single-reg)))
+ (:note "pointer to float coercion")
+ (:generator 2
+ (sc-case x
+ (descriptor-reg
+ (move tmp x)
+ (inst shr tmp 32)
+ (inst movd y tmp))
+ (control-stack
+ ;; When the single-float descriptor is in memory, the untagging
+ ;; is done in the target XMM register. This is faster than going
+ ;; through a general-purpose register and the code is smaller.
+ (inst movq y x)
+ (inst shufps y y #4r3331)))))
+(define-move-vop move-to-single-reg :move (descriptor-reg) (single-reg))
+
+;;; Move from a descriptor to a float stack.
+(define-vop (move-to-single-stack)
(:args (x :scs (descriptor-reg) :target tmp))
- (:temporary (:sc unsigned-reg) tmp)
- (:results (y :scs (single-reg)))
+ (:temporary (:sc unsigned-reg :from :argument :to :result) tmp)
+ (:results (y :scs (single-stack)))
(:note "pointer to float coercion")
(:generator 2
(move tmp x)
(inst shr tmp 32)
- (inst movd y tmp)))
-
-(define-move-vop move-to-single :move (descriptor-reg) (single-reg))
+ (let ((slot (make-ea :dword :base rbp-tn
+ :disp (frame-byte-offset (tn-offset y)))))
+ (inst mov slot (reg-in-size tmp :dword)))))
+(define-move-vop move-to-single-stack :move (descriptor-reg) (single-stack))
(define-vop (move-to-double)
(:args (x :scs (descriptor-reg)))
(:vop-var vop)
(:save-p :compute-only)
(:generator 1
+ (unless (location= x y)
+ (inst xorpd y y))
(note-this-location vop :internal-error)
(inst sqrtsd y x)))
\f
(:vop-var vop)
(:save-p :compute-only)
(:generator 5
+ (sc-case y
+ (single-reg (inst xorps y y))
+ (double-reg (inst xorpd y y)))
(note-this-location vop :internal-error)
(inst ,inst y x)))))
(frob %single-float/signed %single-float cvtsi2ss single-reg single-float)
(:vop-var vop)
(:save-p :compute-only)
(:generator 2
+ (unless (location= x y)
+ (sc-case y
+ (single-reg (inst xorps y y))
+ (double-reg (inst xorpd y y))))
(note-this-location vop :internal-error)
(inst ,inst y (sc-case x
(,(first from-scs) x)
- (,(second from-scs) (,ea-func x))))))))
+ (,(second from-scs) (,ea-func x))))
+ ,(when (and (eq from-type 'double-float) ; if the input is wider
+ (eq to-type 'single-float)) ; than the output, clear
+ `(when (location= x y) ; noise in the high part
+ (inst shufps y y #4r3330)))))))
(frob %single-float/double-float %single-float cvtsd2ss
(double-reg double-stack) double-float ea-for-df-stack
single-reg single-float)
(signed-stack
(inst movd res bits)))))))
+(define-vop (make-single-float-c)
+ (:results (res :scs (single-reg single-stack descriptor-reg)))
+ (:arg-types (:constant (signed-byte 32)))
+ (:result-types single-float)
+ (:info bits)
+ (:translate make-single-float)
+ (:policy :fast-safe)
+ (:vop-var vop)
+ (:generator 1
+ (sc-case res
+ (single-stack
+ (inst mov res bits))
+ (single-reg
+ (inst movss res (register-inline-constant :dword bits)))
+ (descriptor-reg
+ (inst mov res (logior (ash bits 32)
+ single-float-widetag))))))
+
(define-vop (make-double-float)
(:args (hi-bits :scs (signed-reg))
(lo-bits :scs (unsigned-reg)))
(inst or temp lo-bits)
(inst movd res temp)))
+(define-vop (make-double-float-c)
+ (:results (res :scs (double-reg)))
+ (:arg-types (:constant (signed-byte 32)) (:constant (unsigned-byte 32)))
+ (:result-types double-float)
+ (:info hi lo)
+ (:translate make-double-float)
+ (:policy :fast-safe)
+ (:vop-var vop)
+ (:generator 1
+ (inst movsd res (register-inline-constant :qword (logior (ash hi 32) lo)))))
+
(define-vop (single-float-bits)
(:args (float :scs (single-reg descriptor-reg)
:load-if (not (sc-is float single-stack))))
(:results (bits :scs (signed-reg)))
- (:temporary (:sc signed-stack :from :argument :to :result) stack-temp)
(:arg-types single-float)
(:result-types signed-num)
(:translate single-float-bits)
(:policy :fast-safe)
- (:vop-var vop)
(:generator 4
- (sc-case bits
- (signed-reg
- (sc-case float
- (single-reg
- (inst movss stack-temp float)
- (move bits stack-temp))
- (single-stack
- (move bits float))
- (descriptor-reg
- (move bits float)
- (inst shr bits 32))))
- (signed-stack
- (sc-case float
- (single-reg
- (inst movss bits float)))))
- ;; Sign-extend
- (inst shl bits 32)
- (inst sar bits 32)))
+ (sc-case float
+ (single-reg
+ (inst movd bits float)
+ (inst movsxd bits (reg-in-size bits :dword)))
+ (single-stack
+ (inst movsxd bits (make-ea :dword ; c.f. ea-for-sf-stack
+ :base rbp-tn
+ :disp (frame-byte-offset (tn-offset float)))))
+ (descriptor-reg
+ (move bits float)
+ (inst sar bits 32)))))
(define-vop (double-float-high-bits)
(:args (float :scs (double-reg descriptor-reg)