objsize-64.ll 1.3 KB

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  1. ; RUN: opt < %s -instcombine -S | FileCheck %s
  2. target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
  3. declare noalias i8* @malloc(i32) nounwind
  4. declare noalias i8* @_Znwm(i64) ; new(unsigned long)
  5. declare i32 @__gxx_personality_v0(...)
  6. declare void @__cxa_call_unexpected(i8*)
  7. declare i64 @llvm.objectsize.i64(i8*, i1) nounwind readonly
  8. ; CHECK-LABEL: @f1(
  9. define i64 @f1(i8 **%esc) {
  10. %call = call i8* @malloc(i32 4)
  11. store i8* %call, i8** %esc
  12. %size = call i64 @llvm.objectsize.i64(i8* %call, i1 false)
  13. ; CHECK: ret i64 4
  14. ret i64 %size
  15. }
  16. ; CHECK-LABEL: @f2(
  17. define i64 @f2(i8** %esc) nounwind uwtable ssp personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
  18. entry:
  19. ; CHECK: invoke noalias i8* @_Znwm(i64 13)
  20. %call = invoke noalias i8* @_Znwm(i64 13)
  21. to label %invoke.cont unwind label %lpad
  22. invoke.cont:
  23. ; CHECK: ret i64 13
  24. store i8* %call, i8** %esc
  25. %0 = tail call i64 @llvm.objectsize.i64(i8* %call, i1 false)
  26. ret i64 %0
  27. lpad:
  28. %1 = landingpad { i8*, i32 }
  29. filter [0 x i8*] zeroinitializer
  30. %2 = extractvalue { i8*, i32 } %1, 0
  31. tail call void @__cxa_call_unexpected(i8* %2) noreturn nounwind
  32. unreachable
  33. }