arm.md (addsi3_cbranch): If destination is a high register...

	* config/arm/arm.md (addsi3_cbranch): If destination is a high
	register, inputs must be low registers and we need a low register
	scratch.  Handle alternative 2 like alternative 3.

From-SVN: r158405

gcc/ChangeLog

@@ -13,6 +13,10 @@
 	If the previous insn is a cbranchsi4_insn with the same arguments,
 	omit the compare instruction.
 
+	* config/arm/arm.md (addsi3_cbranch): If destination is a high
+	register, inputs must be low registers and we need a low register
+	scratch.  Handle alternative 2 like alternative 3.
+
 2010-04-16  Jakub Jelinek  <jakub@redhat.com>
 
 	* alias.c (memrefs_conflict_p): If x and y are the same VALUE,

gcc/config/arm/arm.md

@@ -7543,15 +7543,15 @@
 	(if_then_else
 	 (match_operator 4 "arm_comparison_operator"
 	  [(plus:SI
-	    (match_operand:SI 2 "s_register_operand" "%l,0,*0,1,1,1")
-	    (match_operand:SI 3 "reg_or_int_operand" "lL,IJ,*r,lIJ,lIJ,lIJ"))
+	    (match_operand:SI 2 "s_register_operand" "%l,0,*l,1,1,1")
+	    (match_operand:SI 3 "reg_or_int_operand" "lL,IJ,*l,lIJ,lIJ,lIJ"))
 	   (const_int 0)])
 	 (label_ref (match_operand 5 "" ""))
 	 (pc)))
    (set
     (match_operand:SI 0 "thumb_cbrch_target_operand" "=l,l,*!h,*?h,*?m,*?m")
     (plus:SI (match_dup 2) (match_dup 3)))
-   (clobber (match_scratch:SI 1 "=X,X,X,l,&l,&l"))]
+   (clobber (match_scratch:SI 1 "=X,X,l,l,&l,&l"))]
   "TARGET_THUMB1
    && (GET_CODE (operands[4]) == EQ
        || GET_CODE (operands[4]) == NE
@@ -7561,8 +7561,7 @@
    {
      rtx cond[3];
 
-     
-     cond[0] = (which_alternative < 3) ? operands[0] : operands[1];
+     cond[0] = (which_alternative < 2) ? operands[0] : operands[1];
      cond[1] = operands[2];
      cond[2] = operands[3];
 
@@ -7571,7 +7570,7 @@
      else
        output_asm_insn (\"add\\t%0, %1, %2\", cond);
 
-     if (which_alternative >= 3
+     if (which_alternative >= 2
 	 && which_alternative < 4)
        output_asm_insn (\"mov\\t%0, %1\", operands);
      else if (which_alternative >= 4)