================
@@ -6771,6 +6771,9 @@ def warn_pointer_sub_null_ptr : Warning<
def warn_floatingpoint_eq : Warning<
"comparing floating point with == or != is unsafe">,
InGroup<DiagGroup<"float-equal">>, DefaultIgnore;
+def warn_fast_floatingpoint_eq : Warning<
+ "explicit comparison with %0 when the program is assumed to not use or
produce %0">,
----------------
AaronBallman wrote:
```suggestion
"explicit comparison with %select{infinity|NaN}0 will always return
'%select{false|true}1' because %select{infinity|NaN}0 will not be produced
according to the currently enabled floating-point options">,
```
How about something along these lines? I mostly want to replace the `%0` with a
`select` so we don't have to pass in constant strings at the use sites, and I
want to explicitly tell the user whether the comparison will always be true or
always be false.
https://github.com/llvm/llvm-project/pull/76873
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