================
@@ -745,12 +745,12 @@ Let ``VT`` be a vector type and ``ET`` the element type
of ``VT``.
=======================================
======================================================================
==================================
Name Operation
Supported element types
=======================================
======================================================================
==================================
- ET __builtin_reduce_max(VT a) return x or y, whichever is larger;
If exactly one argument is integer and floating point types
- a NaN, return the other argument. If
both arguments are NaNs,
- fmax() return a NaN.
- ET __builtin_reduce_min(VT a) return x or y, whichever is smaller;
If exactly one argument integer and floating point types
- is a NaN, return the other argument.
If both arguments are
- NaNs, fmax() return a NaN.
+ ET __builtin_reduce_max(VT a) return the largest element of the
vector. If the element type is integer and floating point types
+ floating point, this function has the
same comparison semantics as
+ ``__builtin_reduce_maximum``.
+ ET __builtin_reduce_min(VT a) return the smallest element of the
vector. If the element type is integer and floating point types
+ floating point, this function has the
same comparison semantics as
----------------
c8ef wrote:
> The ‘llvm.vector.reduce.fmax.*’ intrinsics do a floating-point MAX reduction
> of a vector, returning the result as a scalar. The return type matches the
> element-type of the vector input.
> This instruction has the **same comparison semantics** as the ‘llvm.maxnum.*’
> intrinsic. That is, the result will always be a number unless all elements of
> the vector are NaN. For a vector with maximum element magnitude 0.0 and
> containing both +0.0 and -0.0 elements, the sign of the result is unspecified.
https://github.com/llvm/llvm-project/pull/114637
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