Home | History | Annotate | Download | only in X86 
      1 ; RUN: llc < %s -march=x86 -tailcallopt | grep TAILCALL | count 7
      2 
      3 ; With -tailcallopt, CodeGen guarantees a tail call optimization
      4 ; for all of these.
      5 
      6 declare fastcc i32 @tailcallee(i32 %a1, i32 %a2, i32 %a3, i32 %a4)
      7 
      8 define fastcc i32 @tailcaller(i32 %in1, i32 %in2) nounwind {
      9 entry:
     10   %tmp11 = tail call fastcc i32 @tailcallee(i32 %in1, i32 %in2, i32 %in1, i32 %in2)
     11   ret i32 %tmp11
     12 }
     13 
     14 declare fastcc i8* @alias_callee()
     15 
     16 define fastcc noalias i8* @noalias_caller() nounwind {
     17   %p = tail call fastcc i8* @alias_callee()
     18   ret i8* %p
     19 }
     20 
     21 declare fastcc noalias i8* @noalias_callee()
     22 
     23 define fastcc i8* @alias_caller() nounwind {
     24   %p = tail call fastcc noalias i8* @noalias_callee()
     25   ret i8* %p
     26 }
     27 
     28 declare fastcc i32 @i32_callee()
     29 
     30 define fastcc i32 @ret_undef() nounwind {
     31   %p = tail call fastcc i32 @i32_callee()
     32   ret i32 undef
     33 }
     34 
     35 declare fastcc void @does_not_return()
     36 
     37 define fastcc i32 @noret() nounwind {
     38   tail call fastcc void @does_not_return()
     39   unreachable
     40 }
     41 
     42 define fastcc void @void_test(i32, i32, i32, i32) {
     43   entry:
     44    tail call fastcc void @void_test( i32 %0, i32 %1, i32 %2, i32 %3)
     45    ret void 
     46 }
     47 
     48 define fastcc i1 @i1test(i32, i32, i32, i32) {
     49   entry:
     50   %4 = tail call fastcc i1 @i1test( i32 %0, i32 %1, i32 %2, i32 %3)
     51   ret i1 %4
     52 }
     53