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Diffstat (limited to 'docs/LangRef.rst')
| -rw-r--r-- | docs/LangRef.rst | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/docs/LangRef.rst b/docs/LangRef.rst index c86309029e..84680df731 100644 --- a/docs/LangRef.rst +++ b/docs/LangRef.rst @@ -2537,11 +2537,17 @@ guaranteed to be separate for each loop. The loop-level metadata is prefixed with ``llvm.loop``. The loop identifier metadata is implemented using a metadata that refers to -itself as follows: +itself to avoid merging it with any other identifier metadata, e.g., +during module linkage or function inlining. That is, each loop should refer +to their own identification metadata even if they reside in separate functions. +The following example contains loop identifier metadata for two separate loop +constructs: .. code-block:: llvm !0 = metadata !{ metadata !0 } + !1 = metadata !{ metadata !1 } + '``llvm.loop.parallel``' Metadata ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |