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| author | Akira Hatanaka <ahatanaka@apple.com> | 2015-11-06 23:55:38 +0000 |
|---|---|---|
| committer | Akira Hatanaka <ahatanaka@apple.com> | 2015-11-06 23:55:38 +0000 |
| commit | 5cfcce12eb0446db614ae3f213f9c02ed4aa87a3 (patch) | |
| tree | 1f4b89a02b6964f005f6fbc5e724620c72c3db3a /llvm/docs | |
| parent | 6e680b2be7e2af65fa054a61133f4930844975a4 (diff) | |
| download | bcm5719-llvm-5cfcce12eb0446db614ae3f213f9c02ed4aa87a3.tar.gz bcm5719-llvm-5cfcce12eb0446db614ae3f213f9c02ed4aa87a3.zip | |
Add 'notail' marker for call instructions.
This marker prevents optimization passes from adding 'tail' or
'musttail' markers to a call. Is is used to prevent tail call
optimization from being performed on the call.
rdar://problem/22667622
Differential Revision: http://reviews.llvm.org/D12923
llvm-svn: 252368
Diffstat (limited to 'llvm/docs')
| -rw-r--r-- | llvm/docs/LangRef.rst | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst index d2bba5c8a74..d58b7b2e4df 100644 --- a/llvm/docs/LangRef.rst +++ b/llvm/docs/LangRef.rst @@ -8386,7 +8386,7 @@ Syntax: :: - <result> = [tail | musttail] call [cconv] [ret attrs] <ty> [<fnty>*] <fnptrval>(<function args>) [fn attrs] + <result> = [tail | musttail | notail ] call [cconv] [ret attrs] <ty> [<fnty>*] <fnptrval>(<function args>) [fn attrs] [ operand bundles ] Overview: @@ -8439,6 +8439,10 @@ This instruction requires several arguments: - `Platform-specific constraints are met. <CodeGenerator.html#tailcallopt>`_ +#. The optional ``notail`` marker indicates that the optimizers should not add + ``tail`` or ``musttail`` markers to the call. It is used to prevent tail + call optimization from being performed on the call. + #. The optional "cconv" marker indicates which :ref:`calling convention <callingconv>` the call should use. If none is specified, the call defaults to using C calling conventions. The |
