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[LangRef] Rename the names of metadata in load/store's syntax (NFC)

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Discussed in D89050
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Juneyoung Lee 2020-10-17 13:29:58 +09:00
parent b846ffc438
commit 59a2a236c5
1 changed files with 20 additions and 17 deletions
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docs/LangRef.rst
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@ -9176,10 +9176,11 @@ Syntax:
::
<result> = load [volatile] <ty>, <ty>* <pointer>[, align <alignment>][, !nontemporal !<index>][, !invariant.load !<index>][, !invariant.group !<index>][, !nonnull !<index>][, !dereferenceable !<deref_bytes_node>][, !dereferenceable_or_null !<deref_bytes_node>][, !align !<align_node>]
<result> = load atomic [volatile] <ty>, <ty>* <pointer> [syncscope("<target-scope>")] <ordering>, align <alignment> [, !invariant.group !<index>]
!<index> = !{ i32 1 }
!<deref_bytes_node> = !{i64 <dereferenceable_bytes>}
<result> = load [volatile] <ty>, <ty>* <pointer>[, align <alignment>][, !nontemporal !<nontemp_node>][, !invariant.load !<empty_node>][, !invariant.group !<empty_node>][, !nonnull !<empty_node>][, !dereferenceable !<deref_bytes_node>][, !dereferenceable_or_null !<deref_bytes_node>][, !align !<align_node>][, !noundef !<empty_node>]
<result> = load atomic [volatile] <ty>, <ty>* <pointer> [syncscope("<target-scope>")] <ordering>, align <alignment> [, !invariant.group !<empty_node>]
!<nontemp_node> = !{ i32 1 }
!<empty_node> = !{}
!<deref_bytes_node> = !{ i64 <dereferenceable_bytes> }
!<align_node> = !{ i64 <value_alignment> }
Overview:
@ -9223,7 +9224,7 @@ tools, so should not be accessed if the function has the
``sanitize_thread`` or ``sanitize_address`` attributes.
The optional ``!nontemporal`` metadata must reference a single
metadata name ``<index>`` corresponding to a metadata node with one
metadata name ``<nontemp_node>`` corresponding to a metadata node with one
``i32`` entry of value 1. The existence of the ``!nontemporal``
metadata on the instruction tells the optimizer and code generator
that this load is not expected to be reused in the cache. The code
@ -9231,7 +9232,7 @@ generator may select special instructions to save cache bandwidth, such
as the ``MOVNT`` instruction on x86.
The optional ``!invariant.load`` metadata must reference a single
metadata name ``<index>`` corresponding to a metadata node with no
metadata name ``<empty_node>`` corresponding to a metadata node with no
entries. If a load instruction tagged with the ``!invariant.load``
metadata is executed, the optimizer may assume the memory location
referenced by the load contains the same value at all points in the
@ -9239,11 +9240,11 @@ program where the memory location is known to be dereferenceable;
otherwise, the behavior is undefined.
The optional ``!invariant.group`` metadata must reference a single metadata name
``<index>`` corresponding to a metadata node with no entries.
See ``invariant.group`` metadata :ref:`invariant.group <md_invariant.group>`
``<empty_node>`` corresponding to a metadata node with no entries.
See ``invariant.group`` metadata :ref:`invariant.group <md_invariant.group>`.
The optional ``!nonnull`` metadata must reference a single
metadata name ``<index>`` corresponding to a metadata node with no
metadata name ``<empty_node>`` corresponding to a metadata node with no
entries. The existence of the ``!nonnull`` metadata on the
instruction tells the optimizer that the value loaded is known to
never be null. If the value is null at runtime, the behavior is undefined.
@ -9253,13 +9254,13 @@ values. This metadata can only be applied to loads of a pointer type.
The optional ``!dereferenceable`` metadata must reference a single metadata
name ``<deref_bytes_node>`` corresponding to a metadata node with one ``i64``
entry.
See ``dereferenceable`` metadata :ref:`dereferenceable <md_dereferenceable>`
See ``dereferenceable`` metadata :ref:`dereferenceable <md_dereferenceable>`.
The optional ``!dereferenceable_or_null`` metadata must reference a single
metadata name ``<deref_bytes_node>`` corresponding to a metadata node with one
``i64`` entry.
See ``dereferenceable_or_null`` metadata :ref:`dereferenceable_or_null
<md_dereferenceable_or_null>`
<md_dereferenceable_or_null>`.
The optional ``!align`` metadata must reference a single metadata name
``<align_node>`` corresponding to a metadata node with one ``i64`` entry.
@ -9309,8 +9310,10 @@ Syntax:
::
store [volatile] <ty> <value>, <ty>* <pointer>[, align <alignment>][, !nontemporal !<index>][, !invariant.group !<index>] ; yields void
store atomic [volatile] <ty> <value>, <ty>* <pointer> [syncscope("<target-scope>")] <ordering>, align <alignment> [, !invariant.group !<index>] ; yields void
store [volatile] <ty> <value>, <ty>* <pointer>[, align <alignment>][, !nontemporal !<nontemp_node>][, !invariant.group !<empty_node>] ; yields void
store atomic [volatile] <ty> <value>, <ty>* <pointer> [syncscope("<target-scope>")] <ordering>, align <alignment> [, !invariant.group !<empty_node>] ; yields void
!<nontemp_node> = !{ i32 1 }
!<empty_node> = !{}
Overview:
"""""""""
@ -9357,15 +9360,15 @@ even in situations where a data race is known to not exist if the
function has the ``sanitize_address`` attribute.
The optional ``!nontemporal`` metadata must reference a single metadata
name ``<index>`` corresponding to a metadata node with one ``i32`` entry of
value 1. The existence of the ``!nontemporal`` metadata on the instruction
name ``<nontemp_node>`` corresponding to a metadata node with one ``i32`` entry
of value 1. The existence of the ``!nontemporal`` metadata on the instruction
tells the optimizer and code generator that this load is not expected to
be reused in the cache. The code generator may select special
instructions to save cache bandwidth, such as the ``MOVNT`` instruction on
x86.
The optional ``!invariant.group`` metadata must reference a
single metadata name ``<index>``. See ``invariant.group`` metadata.
single metadata name ``<empty_node>``. See ``invariant.group`` metadata.
Semantics:
""""""""""
@ -10273,7 +10276,7 @@ Syntax:
::
<result> = inttoptr <ty> <value> to <ty2>[, !dereferenceable !<deref_bytes_node>][, !dereferenceable_or_null !<deref_bytes_node] ; yields ty2
<result> = inttoptr <ty> <value> to <ty2>[, !dereferenceable !<deref_bytes_node>][, !dereferenceable_or_null !<deref_bytes_node>] ; yields ty2
Overview:
"""""""""