llvm/test/CodeGen/PowerPC/ifcvt-forked-bug-2016-08-08.ll

   1 ; ModuleID = 'bugpoint-reduced-instructions.bc'
   2 ; RUN: llc -O2 -o - %s -verify-machineinstrs | FileCheck %s
   3 source_filename = "bugpoint-output-9ad75f8.bc"
   4 target datalayout = "e-m:e-i64:64-n32:64"
   5 target triple = "powerpc64le-unknown-linux-gnu"
   6
   7 ; Function Attrs: nounwind uwtable
   8 define hidden void @_ZN11__sanitizer25MaybeStartBackgroudThreadEv() local_unnamed_addr #0 {
   9 entry:
  10   br i1 undef, label %land.lhs.true, label %if.end
  11
  12 ; CHECK: # %land.lhs.true
  13 ; Test updated due D63152 where any load/store prevents shrink-wrapping
  14 ; CHECK-NEXT: bc
  15 ; CHECK-NEXT: # %if.end4
  16 land.lhs.true:                                    ; preds = %entry
  17   br i1 undef, label %return, label %if.end4
  18
  19 if.end:                                           ; preds = %entry
  20   br i1 icmp ne (ptr @_ZN11__sanitizer19real_pthread_createEPvS0_PFS0_S0_ES0_, ptr null), label %if.end4, label %return
  21
  22 if.end4:                                          ; preds = %if.end, %land.lhs.true
  23   %call5 = tail call ptr @_ZN11__sanitizer21internal_start_threadEPFvPvES0_(ptr nonnull @_ZN11__sanitizer16BackgroundThreadEPv, ptr null) #7
  24   unreachable
  25
  26 return:                                           ; preds = %if.end, %land.lhs.true
  27   ret void
  28 }
  29
  30 declare extern_weak signext i32 @_ZN11__sanitizer19real_pthread_createEPvS0_PFS0_S0_ES0_(ptr, ptr, ptr, ptr) #2
  31
  32 declare ptr @_ZN11__sanitizer21internal_start_threadEPFvPvES0_(ptr, ptr) local_unnamed_addr #2
  33
  34 declare hidden void @_ZN11__sanitizer16BackgroundThreadEPv(ptr nocapture readnone) #5
  35
  36 attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="ppc64le" "target-features"="+altivec,+bpermd,+crypto,+direct-move,+extdiv,+power8-vector,+vsx" "unsafe-fp-math"="false" "use-soft-float"="false" }
  37 attributes #7 = { nobuiltin nounwind }