[PATCH] D87717: [docs] Update ControlFlowIntegrity.rst.

[Evgenii Stepanov via Phabricator via cfe-commits]

eugenis created this revision.
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Herald added a subscriber: dexonsmith.
Herald added a project: clang.
eugenis requested review of this revision.
Herald added a subscriber: aheejin.

Expand the list of targets that support cfi-icall.
Add ThinLTO everywhere LTO is mentioned. AFAIK all CFI features are
supported with ThinLTO.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D87717

Files:
  clang/docs/ControlFlowIntegrity.rst


Index: clang/docs/ControlFlowIntegrity.rst
===================================================================
--- clang/docs/ControlFlowIntegrity.rst
+++ clang/docs/ControlFlowIntegrity.rst
@@ -76,8 +76,8 @@
 to use all schemes except for non-virtual member function call and indirect call
 checking.
 
-Remember that you have to provide ``-flto`` if at least one CFI scheme is
-enabled.
+Remember that you have to provide ``-flto`` or ``-flto=thin`` if at
+least one CFI scheme is enabled.
 
 Trapping and Diagnostics
 ========================
@@ -217,7 +217,8 @@
 shared library boundaries are handled as if the callee was not compiled with
 ``-fsanitize=cfi-icall``.
 
-This scheme is currently only supported on the x86 and x86_64 architectures.
+This scheme is currently supported on a limited set of targets: x86,
+x86_64, arm, arch64 and wasm.
 
 ``-fsanitize-cfi-icall-generalize-pointers``
 --------------------------------------------
@@ -368,7 +369,7 @@
 Use **-f[no-]sanitize-cfi-cross-dso** to enable the cross-DSO control
 flow integrity mode, which allows all CFI schemes listed above to
 apply across DSO boundaries. As in the regular CFI, each DSO must be
-built with ``-flto``.
+built with ``-flto`` or ``flto=thin``.
 
 Normally, CFI checks will only be performed for classes that have hidden LTO
 visibility. With this flag enabled, the compiler will emit cross-DSO CFI


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