arm.md (arch): Add armv6_or_vfpv3.

	* arm.md (arch): Add armv6_or_vfpv3.
	(arch_enabled): Add test for the above.
	* vfp.md (divsf_vfp, divdf_vfp): Add earlyclobber when code can run
	on VFP9.
	(sqrtsf_vfp, sqrtdf_vfp): Likewise.

From-SVN: r212265

gcc/ChangeLog

+2014-07-03  Richard Earnshaw  <rearnsha@arm.com>
+
+	* arm.md (arch): Add armv6_or_vfpv3.
+	(arch_enabled): Add test for the above.
+	* vfp.md (divsf_vfp, divdf_vfp): Add earlyclobber when code can run
+	on VFP9.
+	(sqrtsf_vfp, sqrtdf_vfp): Likewise.
+	
 2014-07-03  Jakub Jelinek  <jakub@redhat.com>
 
 	* gcov-io.c (gcov_read_words): Don't call memmove if excess is 0.

gcc/config/arm/arm.md

@@ -127,7 +127,7 @@
 ; for ARM or Thumb-2 with arm_arch6, and nov6 for ARM without
 ; arm_arch6.  This attribute is used to compute attribute "enabled",
 ; use type "any" to enable an alternative in all cases.
-(define_attr "arch" "any,a,t,32,t1,t2,v6,nov6,neon_for_64bits,avoid_neon_for_64bits,iwmmxt,iwmmxt2"
+(define_attr "arch" "any,a,t,32,t1,t2,v6,nov6,neon_for_64bits,avoid_neon_for_64bits,iwmmxt,iwmmxt2,armv6_or_vfpv3"
   (const_string "any"))
 
 (define_attr "arch_enabled" "no,yes"
@@ -174,7 +174,12 @@
 
 	 (and (eq_attr "arch" "iwmmxt2")
 	      (match_test "TARGET_REALLY_IWMMXT2"))
-	 (const_string "yes")]
+	 (const_string "yes")
+
+	 (and (eq_attr "arch" "armv6_or_vfpv3")
+	      (match_test "arm_arch6 || TARGET_VFP3"))
+	 (const_string "yes")
+	]
 
 	(const_string "no")))
 

gcc/config/arm/vfp.md

@@ -714,25 +714,30 @@
 
 ;; Division insns
 
+; VFP9 Erratum 760019: It's potentially unsafe to overwrite the input
+; operands, so mark the output as early clobber for VFPv2 on ARMv5 or
+; earlier.
 (define_insn "*divsf3_vfp"
-  [(set (match_operand:SF	  0 "s_register_operand" "=t")
-	(div:SF (match_operand:SF 1 "s_register_operand" "t")
-		(match_operand:SF 2 "s_register_operand" "t")))]
+  [(set (match_operand:SF	  0 "s_register_operand" "=&t,t")
+	(div:SF (match_operand:SF 1 "s_register_operand" "t,t")
+		(match_operand:SF 2 "s_register_operand" "t,t")))]
   "TARGET_32BIT && TARGET_HARD_FLOAT && TARGET_VFP"
   "fdivs%?\\t%0, %1, %2"
   [(set_attr "predicable" "yes")
    (set_attr "predicable_short_it" "no")
+   (set_attr "arch" "*,armv6_or_vfpv3")
    (set_attr "type" "fdivs")]
 )
 
 (define_insn "*divdf3_vfp"
-  [(set (match_operand:DF	  0 "s_register_operand" "=w")
-	(div:DF (match_operand:DF 1 "s_register_operand" "w")
-		(match_operand:DF 2 "s_register_operand" "w")))]
+  [(set (match_operand:DF	  0 "s_register_operand" "=&w,w")
+	(div:DF (match_operand:DF 1 "s_register_operand" "w,w")
+		(match_operand:DF 2 "s_register_operand" "w,w")))]
   "TARGET_32BIT && TARGET_HARD_FLOAT && TARGET_VFP_DOUBLE"
   "fdivd%?\\t%P0, %P1, %P2"
   [(set_attr "predicable" "yes")
    (set_attr "predicable_short_it" "no")
+   (set_attr "arch" "*,armv6_or_vfpv3")
    (set_attr "type" "fdivd")]
 )
 
@@ -1070,23 +1075,28 @@
 
 ;; Sqrt insns.
 
+; VFP9 Erratum 760019: It's potentially unsafe to overwrite the input
+; operands, so mark the output as early clobber for VFPv2 on ARMv5 or
+; earlier.
 (define_insn "*sqrtsf2_vfp"
-  [(set (match_operand:SF	   0 "s_register_operand" "=t")
-	(sqrt:SF (match_operand:SF 1 "s_register_operand" "t")))]
+  [(set (match_operand:SF	   0 "s_register_operand" "=&t,t")
+	(sqrt:SF (match_operand:SF 1 "s_register_operand" "t,t")))]
   "TARGET_32BIT && TARGET_HARD_FLOAT && TARGET_VFP"
   "fsqrts%?\\t%0, %1"
   [(set_attr "predicable" "yes")
    (set_attr "predicable_short_it" "no")
+   (set_attr "arch" "*,armv6_or_vfpv3")
    (set_attr "type" "fsqrts")]
 )
 
 (define_insn "*sqrtdf2_vfp"
-  [(set (match_operand:DF	   0 "s_register_operand" "=w")
-	(sqrt:DF (match_operand:DF 1 "s_register_operand" "w")))]
+  [(set (match_operand:DF	   0 "s_register_operand" "=&w,w")
+	(sqrt:DF (match_operand:DF 1 "s_register_operand" "w,w")))]
   "TARGET_32BIT && TARGET_HARD_FLOAT && TARGET_VFP_DOUBLE"
   "fsqrtd%?\\t%P0, %P1"
   [(set_attr "predicable" "yes")
    (set_attr "predicable_short_it" "no")
+   (set_attr "arch" "*,armv6_or_vfpv3")
    (set_attr "type" "fsqrtd")]
 )