[clang] [X86][Headers] Specify result of NaN comparisons (PR #85862)

[Paul T Robinson via cfe-commits]

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@@ -1168,8 +1202,8 @@ _mm_comige_ss(__m128 __a, __m128 __b)
 ///    operands to determine if the first operand is not equal to the second
 ///    operand.
 ///
-///    The comparison returns 0 for false, 1 for true. If either of the two
-///    lower floating-point values is NaN, returns 0.
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pogo59 wrote:

That was an existing mistake, but I agree, thanks!

https://github.com/llvm/llvm-project/pull/85862