sync.md (UNSPEC_FILD_ATOMIC, [...]): New.

	* config/i386/sync.md (UNSPEC_FILD_ATOMIC, UNSPEC_FIST_ATOMIC): New.
	(loaddi_via_fpu): Use UNSPEC_FILD_ATOMIC.
	(storedi_via_fpu): Use UNSPEC_FIST_ATOMIC.
	* reg-stack.c (get_true_reg): Change UNSPEC_LDA to UNSPEC_FILD_ATOMIC.
	(subst_stack_regs_pat): Change UNSPEC_STA to UNSPEC_FIST_ATOMIC.

From-SVN: r221830

gcc/ChangeLog

+2015-04-02  Uros Bizjak  <ubizjak@gmail.com>
+
+	* config/i386/sync.md (UNSPEC_FILD_ATOMIC, UNSPEC_FIST_ATOMIC): New.
+	(loaddi_via_fpu): Use UNSPEC_FILD_ATOMIC.
+	(storedi_via_fpu): Use UNSPEC_FIST_ATOMIC.
+	* reg-stack.c (get_true_reg): Change UNSPEC_LDA to UNSPEC_FILD_ATOMIC.
+	(subst_stack_regs_pat): Change UNSPEC_STA to UNSPEC_FIST_ATOMIC.
+
 2015-04-01  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/sync.md (UNSPEC_MOVA): Remove.

gcc/config/i386/sync.md

@@ -22,6 +22,9 @@
   UNSPEC_SFENCE
   UNSPEC_MFENCE
 
+  UNSPEC_FILD_ATOMIC
+  UNSPEC_FIST_ATOMIC
+
   ;; __atomic support
   UNSPEC_LDA
   UNSPEC_STA
@@ -302,7 +305,8 @@
 
 (define_insn "loaddi_via_fpu"
   [(set (match_operand:DF 0 "register_operand" "=f")
-	(unspec:DF [(match_operand:DI 1 "memory_operand" "m")] UNSPEC_LDA))]
+	(unspec:DF [(match_operand:DI 1 "memory_operand" "m")]
+		   UNSPEC_FILD_ATOMIC))]
   "TARGET_80387"
   "fild%Z1\t%1"
   [(set_attr "type" "fmov")
@@ -311,7 +315,8 @@
 
 (define_insn "storedi_via_fpu"
   [(set (match_operand:DI 0 "memory_operand" "=m")
-	(unspec:DI [(match_operand:DF 1 "register_operand" "f")] UNSPEC_STA))]
+	(unspec:DI [(match_operand:DF 1 "register_operand" "f")]
+		   UNSPEC_FIST_ATOMIC))]
   "TARGET_80387"
 {
   gcc_assert (find_regno_note (insn, REG_DEAD, FIRST_STACK_REG) != NULL_RTX);

gcc/reg-stack.c

@@ -448,7 +448,7 @@ get_true_reg (rtx *pat)
 
       case UNSPEC:
 	if (XINT (*pat, 1) == UNSPEC_TRUNC_NOOP
-	    || XINT (*pat, 1) == UNSPEC_LDA)
+	    || XINT (*pat, 1) == UNSPEC_FILD_ATOMIC)
 	  pat = & XVECEXP (*pat, 0, 0);
 	return pat;
 
@@ -1670,8 +1670,8 @@ subst_stack_regs_pat (rtx_insn *insn, stack_ptr regstack, rtx pat)
 	  case UNSPEC:
 	    switch (XINT (pat_src, 1))
 	      {
-	      case UNSPEC_STA:
 	      case UNSPEC_FIST:
+	      case UNSPEC_FIST_ATOMIC:
 
 	      case UNSPEC_FIST_FLOOR:
 	      case UNSPEC_FIST_CEIL: