i386.md (expm1xf2): Reorder insn sequence for better code generation.

	* config/i386/i386.md (expm1xf2): Reorder insn sequence for
	better code generation.

From-SVN: r122158

gcc/ChangeLog

+2007-02-20  Uros Bizjak  <ubizjak@gmail.com>
+
+	* config/i386/i386.md (expm1xf2): Reorder insn sequence for
+	better code generation.
+
 2007-02-20  Ben Elliston  <bje@au.ibm.com>
 
 	* config/m68hc11/m68hc11.h (OVERRIDE_OPTIONS): Remove extra ;.

gcc/config/i386/i386.md

@@ -17145,6 +17145,7 @@
 			       (match_dup 2)))
    (set (match_dup 4) (unspec:XF [(match_dup 3)] UNSPEC_FRNDINT))
    (set (match_dup 5) (minus:XF (match_dup 3) (match_dup 4)))
+   (set (match_dup 9) (float_extend:XF (match_dup 13)))
    (set (match_dup 6) (unspec:XF [(match_dup 5)] UNSPEC_F2XM1))
    (parallel [(set (match_dup 7)
 		   (unspec:XF [(match_dup 6) (match_dup 4)]
@@ -17158,7 +17159,8 @@
 	      (set (match_dup 11)
 		   (unspec:XF [(match_dup 9) (match_dup 8)]
 			      UNSPEC_FSCALE_EXP))])
-   (set (match_dup 12) (minus:XF (match_dup 10) (match_dup 9)))
+   (set (match_dup 12) (minus:XF (match_dup 10)
+				 (float_extend:XF (match_dup 13))))
    (set (match_operand:XF 0 "register_operand" "")
 	(plus:XF (match_dup 12) (match_dup 7)))]
   "TARGET_USE_FANCY_MATH_387
@@ -17169,8 +17171,10 @@
   for (i = 2; i < 13; i++)
     operands[i] = gen_reg_rtx (XFmode);
 
+  operands[13]
+    = validize_mem (force_const_mem (SFmode, CONST1_RTX (SFmode))); /* fld1 */
+
   emit_move_insn (operands[2], standard_80387_constant_rtx (5)); /* fldl2e */
-  emit_move_insn (operands[9], CONST1_RTX (XFmode));  /* fld1 */
 })
 
 (define_expand "expm1<mode>2"