Add a new function attribute, nonlazybind, which inhibits lazy-loading

optimizations when emitting calls to the function;  instead those calls may
use faster relocations which require the function to be immediately resolved
upon loading the dynamic object featuring the call.  This is useful when it
is known that the function will be called frequently and pervasively and
therefore there is no merit in delaying binding of the function.

Currently only implemented for x86-64, where it turns into a call through
the global offset table.

Patch by Dan Gohman, who assures me that he's going to add LangRef documentation
for this once it's committed.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133080 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 0 deletions

diff --git a/utils/llvm.grm b/utils/llvm.grm
index 9d6bdf79f5..3f33702d2a 100644
--- a/utils/llvm.grm
+++ b/utils/llvm.grm
@@ -172,6 +172,8 @@ FuncAttr      ::= noreturn
  | optsize
  | ssp
  | sspreq
+ | hotpatch
+ | nonlazybind
  ;
 
 OptFuncAttrs  ::= + _ | OptFuncAttrs FuncAttr ;