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f22e6d5919
The implementation made the assumption that any feature starting with
"sve" meant that this was an SVE feature. This is not the case for
"sve-b16b16", as this is a feature that applies to both SVE and SME.
This meant that:
```
__attribute__((target("+sme2,+sve2,+sve-b16b16")))
svbfloat16_t foo(svbfloat16_t a, svbfloat16_t b, svbfloat16_t c)
__arm_streaming {
return svclamp_bf16(a, b, c);
}
```
would result in an incorrect diagnostic saying that `svclamp_bf16` could
only be used in non-streaming functions.