; LLVM IR from facebook/redex :: libredex/IROpcode.ll (ZN6opcode21iget_opcode_for_fieldEPK8DexField)

; 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.8 = external hidden unnamed_addr constant [70 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [18 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [2 x i8], align 1
@__PRETTY_FUNCTION__._ZN6opcode21iget_opcode_for_fieldEPK8DexField = external hidden unnamed_addr constant [57 x i8], align 1

; Function Attrs: noreturn
declare void @_Z11assert_failPKcS0_jS0_10RedexErrorS0_z(ptr noundef, ptr noundef, i32 noundef, ptr noundef, i32 noundef, ptr noundef, ...) #0

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i16 @_ZN6opcode21iget_opcode_for_fieldEPK8DexField(ptr noundef %0) #1 {
  %2 = alloca i16, align 2
  %3 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = call noundef ptr @_ZNK11DexFieldRef8get_typeEv(ptr noundef nonnull align 8 dereferenceable(26) %4)
  %6 = call noundef zeroext i8 @_ZN4type11to_datatypeEPK7DexType(ptr noundef %5)
  switch i8 %6, label %15 [
    i8 10, label %7
    i8 9, label %7
    i8 1, label %8
    i8 2, label %9
    i8 4, label %10
    i8 3, label %11
    i8 5, label %12
    i8 7, label %12
    i8 6, label %13
    i8 8, label %13
    i8 0, label %14
  ]

7:                                                ; preds = %1, %1
  store i16 61, ptr %2, align 2
  br label %20

8:                                                ; preds = %1
  store i16 62, ptr %2, align 2
  br label %20

9:                                                ; preds = %1
  store i16 63, ptr %2, align 2
  br label %20

10:                                               ; preds = %1
  store i16 64, ptr %2, align 2
  br label %20

11:                                               ; preds = %1
  store i16 65, ptr %2, align 2
  br label %20

12:                                               ; preds = %1, %1
  store i16 59, ptr %2, align 2
  br label %20

13:                                               ; preds = %1, %1
  store i16 60, ptr %2, align 2
  br label %20

14:                                               ; preds = %1
  br label %15

15:                                               ; preds = %14, %1
  br label %16

16:                                               ; preds = %17, %15
  call void (ptr, ptr, i32, ptr, i32, ptr, ...) @_Z11assert_failPKcS0_jS0_10RedexErrorS0_z(ptr noundef @.str.10, ptr noundef @.str.8, i32 noundef 1252, ptr noundef @__PRETTY_FUNCTION__._ZN6opcode21iget_opcode_for_fieldEPK8DexField, i32 noundef 2, ptr noundef @.str.11) #4
  unreachable

17:                                               ; No predecessors!
  br i1 true, label %16, label %18, !llvm.loop !9

18:                                               ; preds = %17
  br label %19

19:                                               ; preds = %18
  unreachable

20:                                               ; preds = %13, %12, %11, %10, %9, %8, %7
  %21 = load i16, ptr %2, align 2
  ret i16 %21
}

declare noundef zeroext i8 @_ZN4type11to_datatypeEPK7DexType(ptr noundef) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK11DexFieldRef8get_typeEv(ptr noundef nonnull align 8 dereferenceable(26)) #3 align 2

attributes #0 = { noreturn "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" }
attributes #2 = { "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 #3 = { mustprogress 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" }
attributes #4 = { noreturn }

!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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; 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.8 = external hidden unnamed_addr constant [70 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [18 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [2 x i8], align 1
@__PRETTY_FUNCTION__._ZN6opcode21iget_opcode_for_fieldEPK8DexField = external hidden unnamed_addr constant [57 x i8], align 1
@switch.table._ZN6opcode21iget_opcode_for_fieldEPK8DexField = private unnamed_addr constant [10 x i16] [i16 62, i16 63, i16 65, i16 64, i16 59, i16 60, i16 59, i16 60, i16 61, i16 61], align 2

; Function Attrs: noreturn
declare void @_Z11assert_failPKcS0_jS0_10RedexErrorS0_z(ptr noundef, ptr noundef, i32 noundef, ptr noundef, i32 noundef, ptr noundef, ...) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext range(i16 59, 66) i16 @_ZN6opcode21iget_opcode_for_fieldEPK8DexField(ptr noundef nonnull %0) local_unnamed_addr #1 {
  %2 = tail call noundef ptr @_ZNK11DexFieldRef8get_typeEv(ptr noundef nonnull align 8 dereferenceable(26) %0)
  %3 = tail call noundef zeroext i8 @_ZN4type11to_datatypeEPK7DexType(ptr noundef %2)
  %switch.tableidx = add i8 %3, -1
  %4 = icmp ult i8 %switch.tableidx, 10
  br i1 %4, label %switch.lookup, label %5

5:                                                ; preds = %1
  tail call void (ptr, ptr, i32, ptr, i32, ptr, ...) @_Z11assert_failPKcS0_jS0_10RedexErrorS0_z(ptr noundef nonnull @.str.10, ptr noundef nonnull @.str.8, i32 noundef 1252, ptr noundef nonnull @__PRETTY_FUNCTION__._ZN6opcode21iget_opcode_for_fieldEPK8DexField, i32 noundef 2, ptr noundef nonnull @.str.11) #4
  unreachable

switch.lookup:                                    ; preds = %1
  %6 = zext nneg i8 %switch.tableidx to i64
  %switch.gep = getelementptr inbounds [10 x i16], ptr @switch.table._ZN6opcode21iget_opcode_for_fieldEPK8DexField, i64 0, i64 %6
  %switch.load = load i16, ptr %switch.gep, align 2
  ret i16 %switch.load
}

declare noundef zeroext i8 @_ZN4type11to_datatypeEPK7DexType(ptr noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK11DexFieldRef8get_typeEv(ptr noundef nonnull align 8 dereferenceable(26)) local_unnamed_addr #3 align 2

attributes #0 = { noreturn "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" }
attributes #2 = { "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 #3 = { mustprogress 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" }
attributes #4 = { noreturn }

!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,IPSCCPPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass