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Diffstat (limited to 'docs/LangRef.rst')
| -rw-r--r-- | docs/LangRef.rst | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/docs/LangRef.rst b/docs/LangRef.rst index 86b5a15f25..d2bc6a0583 100644 --- a/docs/LangRef.rst +++ b/docs/LangRef.rst @@ -366,6 +366,18 @@ added in the future: accessed runtime components pinned to specific hardware registers. At the moment only X86 supports this convention (both 32 and 64 bit). +"``webkit_jscc``" - WebKit's JavaScript calling convention + This calling convention has been implemented for `WebKit FTL JIT + <https://trac.webkit.org/wiki/FTLJIT>`_. It passes arguments on the + stack right to left (as cdecl does), and returns a value in the + platform's customary return register. +"``anyregcc``" - Dynamic calling convention for code patching + This is a special convention that supports patching an arbitrary code + sequence in place of a call site. This convention forces the call + arguments into registers but allows them to be dynamcially + allocated. This can currently only be used with calls to + llvm.experimental.patchpoint because only this intrinsic records + the location of its arguments in a side table. See :doc:`StackMaps`. "``cc <n>``" - Numbered convention Any calling convention may be specified by number, allowing target-specific calling conventions to be used. Target specific @@ -8912,3 +8924,10 @@ Semantics: This intrinsic does nothing, and it's removed by optimizers and ignored by codegen. + +Stack Map Intrinsics +-------------------- + +LLVM provides experimental intrinsics to support runtime patching +mechanisms commonly desired in dynamic language JITs. These intrinsics +are described in :doc:`StackMaps`. |