Arnold Schwaighofer 9ccea99165 Added tail call optimization to the x86 back end. It can be ...

enabled by passing -tailcallopt to llc.  The optimization is
performed if the following conditions are satisfied:
* caller/callee are fastcc
* elf/pic is disabled OR
  elf/pic enabled + callee is in module + callee has
  visibility protected or hidden

llvm-svn: 42870

2007-10-11 19:40:01 +00:00

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