aarch64.md: New pattern.

2015-12-02  David Sherwood  <david.sherwood@arm.com>

    gcc/
	* config/aarch64/aarch64.md: New pattern.
	* config/aarch64/aarch64-simd.md: Likewise.
	* config/aarch64/iterators.md: New unspecs, iterators.
    gcc/testsuite
	* gcc.target/aarch64/fmaxmin.c: New test.

From-SVN: r231187

gcc/ChangeLog

+2015-12-02  David Sherwood  <david.sherwood@arm.com>
+
+	* config/aarch64/aarch64.md: New pattern.
+	* config/aarch64/aarch64-simd.md: Likewise.
+	* config/aarch64/iterators.md: New unspecs, iterators.
+
 2015-12-02  Pierre-Marie de Rodat  <derodat@adacore.com>
 
 	* dwarf2out.c (dwar2out_var_location): In addition to notes,

gcc/config/aarch64/aarch64-simd.md

@@ -1962,6 +1962,17 @@
   [(set_attr "type" "neon_fp_minmax_<Vetype><q>")]
 )
 
+;; Auto-vectorized forms for the IEEE-754 fmax()/fmin() functions
+(define_insn "<fmaxmin><mode>3"
+  [(set (match_operand:VDQF 0 "register_operand" "=w")
+	(unspec:VDQF [(match_operand:VDQF 1 "register_operand" "w")
+		      (match_operand:VDQF 2 "register_operand" "w")]
+		      FMAXMIN))]
+  "TARGET_SIMD"
+  "<fmaxmin_op>\\t%0.<Vtype>, %1.<Vtype>, %2.<Vtype>"
+  [(set_attr "type" "neon_fp_minmax_<Vetype><q>")]
+)
+
 ;; 'across lanes' add.
 
 (define_expand "reduc_plus_scal_<mode>"

gcc/config/aarch64/aarch64.md

@@ -4569,6 +4569,17 @@
   [(set_attr "type" "f_minmax<s>")]
 )
 
+;; Scalar forms for the IEEE-754 fmax()/fmin() functions
+(define_insn "<fmaxmin><mode>3"
+  [(set (match_operand:GPF 0 "register_operand" "=w")
+	(unspec:GPF [(match_operand:GPF 1 "register_operand" "w")
+		     (match_operand:GPF 2 "register_operand" "w")]
+		     FMAXMIN))]
+  "TARGET_FLOAT"
+  "<fmaxmin_op>\\t%<s>0, %<s>1, %<s>2"
+  [(set_attr "type" "f_minmax<s>")]
+)
+
 ;; For copysign (x, y), we want to generate:
 ;;
 ;;   LDR d2, #(1 << 63)

gcc/config/aarch64/iterators.md

@@ -306,6 +306,8 @@
     UNSPEC_VEC_SHR      ; Used in aarch64-simd.md.
     UNSPEC_SQRDMLAH     ; Used in aarch64-simd.md.
     UNSPEC_SQRDMLSH     ; Used in aarch64-simd.md.
+    UNSPEC_FMAXNM       ; Used in aarch64-simd.md.
+    UNSPEC_FMINNM       ; Used in aarch64-simd.md.
 ])
 
 ;; ------------------------------------------------------------------
@@ -948,6 +950,8 @@
 
 (define_int_iterator FMAXMIN_UNS [UNSPEC_FMAX UNSPEC_FMIN])
 
+(define_int_iterator FMAXMIN [UNSPEC_FMAXNM UNSPEC_FMINNM])
+
 (define_int_iterator VQDMULH [UNSPEC_SQDMULH UNSPEC_SQRDMULH])
 
 (define_int_iterator USSUQADD [UNSPEC_SUQADD UNSPEC_USQADD])
@@ -1040,6 +1044,12 @@
 				 (UNSPEC_FMINNMV "fminnm")
 				 (UNSPEC_FMINV "fmin")])
 
+(define_int_attr fmaxmin [(UNSPEC_FMAXNM "fmax")
+			  (UNSPEC_FMINNM "fmin")])
+
+(define_int_attr fmaxmin_op [(UNSPEC_FMAXNM "fmaxnm")
+			     (UNSPEC_FMINNM "fminnm")])
+
 (define_int_attr sur [(UNSPEC_SHADD "s") (UNSPEC_UHADD "u")
 		      (UNSPEC_SRHADD "sr") (UNSPEC_URHADD "ur")
 		      (UNSPEC_SHSUB "s") (UNSPEC_UHSUB "u")

gcc/testsuite/ChangeLog

+2015-12-02  David Sherwood  <david.sherwood@arm.com>
+
+        * gcc.target/aarch64/fmaxmin.c: New test.
+
 2015-12-02  Thomas Schwinge  <thomas@codesourcery.com>
 
 	* gfortran.dg/goacc/coarray.f95: XFAIL.