msp430.md: Remove erroneous subreg expression from zero_extendqisi2 insn pattern.

	* gcc/config/msp430/msp430.md: Remove erroneous subreg expression from
	zero_extendqisi2 insn pattern. Remove msp430x ISA restriction on
	zero_extend{q,h}isi2.

From-SVN: r260981

gcc/ChangeLog

+2018-05-30  Jozef Lawrynowicz  <jozef.l@mittosystems.com>
+
+	* gcc/config/msp430/msp430.md: Remove erroneous subreg expression from
+	zero_extendqisi2 insn pattern. Remove msp430x ISA restriction on
+	zero_extend{q,h}isi2.
+
 2018-05-30  Borislav Petkov  <bp@suse.de>
 
 	* doc/extend.texi: Document some architecture specific

gcc/config/msp430/msp430.md

@@ -619,15 +619,15 @@
 
 (define_insn "zero_extendqisi2"
   [(set (match_operand:SI 0 "nonimmediate_operand" "=r")
-	(zero_extend:SI (subreg:HI (match_operand:QI 1 "nonimmediate_operand" "rm") 0)))]
-  "msp430x"
+	(zero_extend:SI (match_operand:QI 1 "nonimmediate_operand" "rm")))]
+  ""
   "MOV.B\t%1,%L0 { CLR\t%H0"
 )
 
 (define_insn "zero_extendhisi2"
   [(set (match_operand:SI 0 "nonimmediate_operand" "=rm,r")
 	(zero_extend:SI (match_operand:HI 1 "nonimmediate_operand" "0,r")))]
-  "msp430x"
+  ""
   "@
   MOV.W\t#0,%H0
   MOV.W\t%1,%L0 { MOV.W\t#0,%H0"