; LLVM IR from JessonYue/LeetCodeLearning :: Array/luoyida/ELF/ELFTest.ll (Z9getEIDATAi)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

@.str.19 = external hidden unnamed_addr constant [24 x i8], align 1
@.str.20 = external hidden unnamed_addr constant [24 x i8], align 1
@.str.21 = external hidden unnamed_addr constant [24 x i8], align 1

declare i32 @printf(ptr noundef, ...) #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z9getEIDATAi(i32 noundef %0) #1 {
  %2 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  %3 = load i32, ptr %2, align 4, !tbaa !5
  switch i32 %3, label %10 [
    i32 0, label %4
    i32 1, label %6
    i32 2, label %8
  ]

4:                                                ; preds = %1
  %5 = call i32 (ptr, ...) @printf(ptr noundef @.str.19)
  br label %10

6:                                                ; preds = %1
  %7 = call i32 (ptr, ...) @printf(ptr noundef @.str.20)
  br label %10

8:                                                ; preds = %1
  %9 = call i32 (ptr, ...) @printf(ptr noundef @.str.21)
  br label %10

10:                                               ; preds = %8, %6, %4, %1
  ret void
}

attributes #0 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

@.str.19 = external hidden unnamed_addr constant [24 x i8], align 1
@.str.20 = external hidden unnamed_addr constant [24 x i8], align 1
@.str.21 = external hidden unnamed_addr constant [24 x i8], align 1
@switch.table._Z9getEIDATAi = private unnamed_addr constant [3 x ptr] [ptr @.str.19, ptr @.str.20, ptr @.str.21], align 8

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; Function Attrs: mustprogress nofree nounwind uwtable
define dso_local void @_Z9getEIDATAi(i32 noundef %0) local_unnamed_addr #1 {
  %2 = icmp ult i32 %0, 3
  br i1 %2, label %switch.lookup, label %5

switch.lookup:                                    ; preds = %1
  %3 = zext nneg i32 %0 to i64
  %switch.gep = getelementptr inbounds [3 x ptr], ptr @switch.table._Z9getEIDATAi, i64 0, i64 %3
  %switch.load = load ptr, ptr %switch.gep, align 8
  %4 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) %switch.load)
  br label %5

5:                                                ; preds = %1, %switch.lookup
  ret void
}

attributes #0 = { nofree nounwind "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nofree nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}


; Effective O3 passes: GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass