[llvm] [NFC] Move llvm.fptrunc.round closer to roundeven in LangRef (PR #155854)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-ir

Author: Dmitry Sidorov (MrSidims)

<details>
<summary>Changes</summary>

Not sure if
https://llvm.org/docs/LangRef.html#standard-c-c-library-intrinsics is a perfect match, but the intrinsic shouldn't be a part of https://llvm.org/docs/LangRef.html#preserving-debug-information-intrinsics

---
Full diff: https://github.com/llvm/llvm-project/pull/155854.diff


1 Files Affected:

- (modified) llvm/docs/LangRef.rst (+40-39) 


``````````diff
diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst
index b122fd352eaf5..cbf5489f2a215 100644
--- a/llvm/docs/LangRef.rst
+++ b/llvm/docs/LangRef.rst
@@ -17780,6 +17780,46 @@ would, but without setting errno. If the rounded value is too large to
 be stored in the result type, the return value is a non-deterministic
 value (equivalent to `freeze poison`).
 
+'``llvm.fptrunc.round``' Intrinsic
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Syntax:
+"""""""
+
+::
+
+      declare <ty2>
+      @llvm.fptrunc.round(<type> <value>, metadata <rounding mode>)
+
+Overview:
+"""""""""
+
+The '``llvm.fptrunc.round``' intrinsic truncates
+:ref:`floating-point <t_floating>` ``value`` to type ``ty2``
+with a specified rounding mode.
+
+Arguments:
+""""""""""
+
+The '``llvm.fptrunc.round``' intrinsic takes a :ref:`floating-point
+<t_floating>` value to cast and a :ref:`floating-point <t_floating>` type
+to cast it to. This argument must be larger in size than the result.
+
+The second argument specifies the rounding mode as described in the constrained
+intrinsics section.
+For this intrinsic, the "round.dynamic" mode is not supported.
+
+Semantics:
+""""""""""
+
+The '``llvm.fptrunc.round``' intrinsic casts a ``value`` from a larger
+:ref:`floating-point <t_floating>` type to a smaller :ref:`floating-point
+<t_floating>` type.
+This intrinsic is assumed to execute in the default :ref:`floating-point
+environment <floatenv>` *except* for the rounding mode.
+This intrinsic is not supported on all targets. Some targets may not support
+all rounding modes.
+
 Bit Manipulation Intrinsics
 ---------------------------
 
@@ -31123,42 +31163,3 @@ Semantics:
 The '``llvm.preserve.struct.access.index``' intrinsic produces the same result
 as a getelementptr with base ``base`` and access operands ``{0, gep_index}``.
 
-'``llvm.fptrunc.round``' Intrinsic
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-Syntax:
-"""""""
-
-::
-
-      declare <ty2>
-      @llvm.fptrunc.round(<type> <value>, metadata <rounding mode>)
-
-Overview:
-"""""""""
-
-The '``llvm.fptrunc.round``' intrinsic truncates
-:ref:`floating-point <t_floating>` ``value`` to type ``ty2``
-with a specified rounding mode.
-
-Arguments:
-""""""""""
-
-The '``llvm.fptrunc.round``' intrinsic takes a :ref:`floating-point
-<t_floating>` value to cast and a :ref:`floating-point <t_floating>` type
-to cast it to. This argument must be larger in size than the result.
-
-The second argument specifies the rounding mode as described in the constrained
-intrinsics section.
-For this intrinsic, the "round.dynamic" mode is not supported.
-
-Semantics:
-""""""""""
-
-The '``llvm.fptrunc.round``' intrinsic casts a ``value`` from a larger
-:ref:`floating-point <t_floating>` type to a smaller :ref:`floating-point
-<t_floating>` type.
-This intrinsic is assumed to execute in the default :ref:`floating-point
-environment <floatenv>` *except* for the rounding mode.
-This intrinsic is not supported on all targets. Some targets may not support
-all rounding modes.

``````````

</details>


https://github.com/llvm/llvm-project/pull/155854