; LLVM IR from facebook/redex :: libredex/IROpcode.ll (ZN6opcode14return_to_moveE8IROpcode)

; 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__._ZN6opcode14return_to_moveE8IROpcode = external hidden unnamed_addr constant [42 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 @_ZN6opcode14return_to_moveE8IROpcode(i16 noundef zeroext %0) #1 {
  %2 = alloca i16, align 2
  %3 = alloca i16, align 2
  store i16 %0, ptr %3, align 2, !tbaa !5
  %4 = load i16, ptr %3, align 2, !tbaa !5
  %5 = zext i16 %4 to i32
  switch i32 %5, label %9 [
    i32 9, label %6
    i32 10, label %7
    i32 11, label %8
  ]

6:                                                ; preds = %1
  store i16 1, ptr %2, align 2
  br label %14

7:                                                ; preds = %1
  store i16 2, ptr %2, align 2
  br label %14

8:                                                ; preds = %1
  store i16 3, ptr %2, align 2
  br label %14

9:                                                ; preds = %1
  br label %10

10:                                               ; preds = %11, %9
  call void (ptr, ptr, i32, ptr, i32, ptr, ...) @_Z11assert_failPKcS0_jS0_10RedexErrorS0_z(ptr noundef @.str.10, ptr noundef @.str.8, i32 noundef 1201, ptr noundef @__PRETTY_FUNCTION__._ZN6opcode14return_to_moveE8IROpcode, i32 noundef 2, ptr noundef @.str.11) #2
  unreachable

11:                                               ; No predecessors!
  br i1 true, label %10, label %12, !llvm.loop !9

12:                                               ; preds = %11
  br label %13

13:                                               ; preds = %12
  unreachable

14:                                               ; preds = %8, %7, %6
  %15 = load i16, ptr %2, align 2
  ret i16 %15
}

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 = { 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 = !{!"_ZTS8IROpcode", !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__._ZN6opcode14return_to_moveE8IROpcode = external hidden unnamed_addr constant [42 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, ...) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext range(i16 1, 4) i16 @_ZN6opcode14return_to_moveE8IROpcode(i16 noundef zeroext %0) local_unnamed_addr #1 {
  %switch.tableidx = add i16 %0, -9
  %2 = icmp ult i16 %switch.tableidx, 3
  br i1 %2, label %switch.lookup, label %3

3:                                                ; 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 1201, ptr noundef nonnull @__PRETTY_FUNCTION__._ZN6opcode14return_to_moveE8IROpcode, i32 noundef 2, ptr noundef nonnull @.str.11) #2
  unreachable

switch.lookup:                                    ; preds = %1
  %switch.offset = add nsw i16 %0, -8
  ret i16 %switch.offset
}

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 = { 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,SROAPass,SimplifyCFGPass,TailCallElimPass