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-rw-r--r--gcc/config/h8300/h8300.md20
1 files changed, 18 insertions, 2 deletions
diff --git a/gcc/config/h8300/h8300.md b/gcc/config/h8300/h8300.md
index 8fb3271..eb7dc77 100644
--- a/gcc/config/h8300/h8300.md
+++ b/gcc/config/h8300/h8300.md
@@ -1604,16 +1604,32 @@
;; EXTEND INSTRUCTIONS
;; ----------------------------------------------------------------------
-(define_insn "zero_extendqihi2"
+(define_expand "zero_extendqihi2"
+ [(set (match_operand:HI 0 "register_operand" "")
+ (zero_extend:HI (match_operand:QI 1 "general_operand_src" "")))]
+ ""
+ "")
+
+(define_insn ""
[(set (match_operand:HI 0 "register_operand" "=r,r")
(zero_extend:HI (match_operand:QI 1 "general_operand_src" "0,g>")))]
- ""
+ "TARGET_H8300"
"@
mov.b #0,%t0
mov.b %R1,%s0\;mov.b #0,%t0"
[(set_attr "length" "2,10")
(set_attr "cc" "clobber,clobber")])
+(define_insn ""
+ [(set (match_operand:HI 0 "register_operand" "=r,r")
+ (zero_extend:HI (match_operand:QI 1 "general_operand_src" "0,g>")))]
+ "TARGET_H8300H || TARGET_H8300S"
+ "@
+ extu.w %T0
+ mov.b %R1,%s0\;extu.w %T0"
+ [(set_attr "length" "2,10")
+ (set_attr "cc" "set_znv,set_znv")])
+
;; The compiler can synthesize a 300H variant of this which is
;; just as efficient as one that we'd create
(define_insn "zero_extendqisi2"