[Arm] Add 16-bit thumb alternatives to iorsi3_compare0[_scratch]

[Arm] Add 16-bit thumb alternatives to iorsi3_compare0[_scratch]

[Richard Earnshaw (lists)]

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The iorsi3_compare0 and iorsi3_compare0_scratch patterns can make use of 
the 16-bit thumb orrs instruction if suitable registers are allocated. 
This patch adds the alternative to allow this to happen.

	* config/arm/arm.md (iorsi3_compare0): Add alternative for 16-bit thumb
	insn.
	(iorsi3_compare0_scratch): Likewise.

Committed to trunk.

R.

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diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
index 50e1b908f59..4ba246ceeee 100644
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -3339,27 +3339,33 @@ (define_peephole2
 
 (define_insn "*iorsi3_compare0"
   [(set (reg:CC_NOOV CC_REGNUM)
-	(compare:CC_NOOV (ior:SI (match_operand:SI 1 "s_register_operand" "%r,r")
-				 (match_operand:SI 2 "arm_rhs_operand" "I,r"))
-			 (const_int 0)))
-   (set (match_operand:SI 0 "s_register_operand" "=r,r")
+	(compare:CC_NOOV
+	 (ior:SI (match_operand:SI 1 "s_register_operand" "%r,0,r")
+		 (match_operand:SI 2 "arm_rhs_operand" "I,l,r"))
+	 (const_int 0)))
+   (set (match_operand:SI 0 "s_register_operand" "=r,l,r")
 	(ior:SI (match_dup 1) (match_dup 2)))]
   "TARGET_32BIT"
   "orrs%?\\t%0, %1, %2"
   [(set_attr "conds" "set")
-   (set_attr "type" "logics_imm,logics_reg")]
+   (set_attr "arch" "*,t2,*")
+   (set_attr "length" "4,2,4")
+   (set_attr "type" "logics_imm,logics_reg,logics_reg")]
 )
 
 (define_insn "*iorsi3_compare0_scratch"
   [(set (reg:CC_NOOV CC_REGNUM)
-	(compare:CC_NOOV (ior:SI (match_operand:SI 1 "s_register_operand" "%r,r")
-				 (match_operand:SI 2 "arm_rhs_operand" "I,r"))
-			 (const_int 0)))
-   (clobber (match_scratch:SI 0 "=r,r"))]
+	(compare:CC_NOOV
+	 (ior:SI (match_operand:SI 1 "s_register_operand" "%r,0,r")
+		 (match_operand:SI 2 "arm_rhs_operand" "I,l,r"))
+	 (const_int 0)))
+   (clobber (match_scratch:SI 0 "=r,l,r"))]
   "TARGET_32BIT"
   "orrs%?\\t%0, %1, %2"
   [(set_attr "conds" "set")
-   (set_attr "type" "logics_imm,logics_reg")]
+   (set_attr "arch" "*,t2,*")
+   (set_attr "length" "4,2,4")
+   (set_attr "type" "logics_imm,logics_reg,logics_reg")]
 )
 
 (define_expand "xordi3"