[PATCH] D130933: Add docs for function attributes hot/cold
Ofek Shilon via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Wed Aug 10 10:07:29 PDT 2022
OfekShilon updated this revision to Diff 451535.
OfekShilon added a comment.
My apologies for the mess, hopefully the diff I just uploaded includes all the right fixes.
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D130933/new/
https://reviews.llvm.org/D130933
Files:
clang/include/clang/Basic/Attr.td
clang/include/clang/Basic/AttrDocs.td
Index: clang/include/clang/Basic/AttrDocs.td
===================================================================
--- clang/include/clang/Basic/AttrDocs.td
+++ clang/include/clang/Basic/AttrDocs.td
@@ -5241,6 +5241,21 @@
}];
}
+def HotFunctionEntryDocs : Documentation {
+ let Category = DocCatFunction;
+ let Content = [{
+``__attribute__((hot))`` marks a function as hot, as a manual alternative to PGO hotness data.
+If PGO data is available, the annotation ``__attribute__((hot))`` overrides the profile count based hotness (unlike ``__attribute__((cold))``).
+}];
+}
+
+def ColdFunctionEntryDocs : Documentation {
+ let Category = DocCatFunction;
+ let Content = [{
+``__attribute__((cold))`` marks a function as cold, as a manual alternative to PGO hotness data.
+If PGO data is available, the profile count based hotness overrides the ``__attribute__((cold))`` annotation (unlike ``__attribute__((hot))``).
+}];
+}
def TransparentUnionDocs : Documentation {
let Category = DocCatDecl;
let Content = [{
Index: clang/include/clang/Basic/Attr.td
===================================================================
--- clang/include/clang/Basic/Attr.td
+++ clang/include/clang/Basic/Attr.td
@@ -1073,7 +1073,7 @@
def Cold : InheritableAttr {
let Spellings = [GCC<"cold">];
let Subjects = SubjectList<[Function]>;
- let Documentation = [Undocumented];
+ let Documentation = [ColdFunctionEntryDocs];
let SimpleHandler = 1;
}
@@ -1519,7 +1519,7 @@
def Hot : InheritableAttr {
let Spellings = [GCC<"hot">];
let Subjects = SubjectList<[Function]>;
- let Documentation = [Undocumented];
+ let Documentation = [HotFunctionEntryDocs];
let SimpleHandler = 1;
}
def : MutualExclusions<[Hot, Cold]>;
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