[LLVMdev] Destination register needs to be valid after callee saved register restore when tail calling

[Dale Johannesen]

On Aug 8, 2007, at 6:12 AM, Arnold Schwaighofer wrote:
> When tail calling a function pointer the register the function
> pointer was loaded to might be invalidated by the restored callee
> saved registers.

Inserting a pseudo before your tail call that defines all the callee- 
saved
registers should work.  See FP_REG_KILL.