The corresponding insn serves this purpose quite fine, and leads to
slightly less (generated) code. All we need is the insn to not have a
leading * in its name, while retaining that * for "extendhfsf2".
Introduce a mode attribute in exchange to achieve that.
gcc/
* config/i386/i386.md (extendhfdf2): Delete expander.
(extendhf): New mode attribute.
(*extendhf<mode>2): Use it.
---
Of course the mode attribute could as well supply the full names.
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -5221,13 +5221,9 @@
}
})
-(define_expand "extendhfdf2"
- [(set (match_operand:DF 0 "register_operand")
- (float_extend:DF
- (match_operand:HF 1 "nonimmediate_operand")))]
- "TARGET_AVX512FP16")
+(define_mode_attr extendhf [(SF "*") (DF "")])
-(define_insn "*extendhf<mode>2"
+(define_insn "<extendhf>extendhf<mode>2"
[(set (match_operand:MODEF 0 "register_operand" "=v")
(float_extend:MODEF
(match_operand:HF 1 "nonimmediate_operand" "vm")))]
