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Diffstat (limited to 'llvm/docs/LangRef.rst')
| -rw-r--r-- | llvm/docs/LangRef.rst | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst index a0c23f9a213..79856a304c1 100644 --- a/llvm/docs/LangRef.rst +++ b/llvm/docs/LangRef.rst @@ -8314,7 +8314,7 @@ Syntax: :: - <result> = [tail | musttail | notail ] call [cconv] [ret attrs] <ty> [<fnty>*] <fnptrval>(<function args>) [fn attrs] + <result> = [tail | musttail | notail ] call [fast-math flags] [cconv] [ret attrs] <ty> [<fnty>*] <fnptrval>(<function args>) [fn attrs] [ operand bundles ] Overview: @@ -8371,6 +8371,11 @@ This instruction requires several arguments: ``tail`` or ``musttail`` markers to the call. It is used to prevent tail call optimization from being performed on the call. +#. The optional ``fast-math flags`` marker indicates that the call has one or more + :ref:`fast-math flags <fastmath>`, which are optimization hints to enable + otherwise unsafe floating-point optimizations. Fast-math flags are only valid + for calls that return a floating-point scalar or vector type. + #. 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 |
