; LLVM IR from DionysiosB/CodeForces :: 0100-0199/118A-StringTask.ll (Z7isVowelc)

; 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"

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_Z7isVowelc(i8 noundef signext %0) #0 {
  %2 = alloca i1, align 1
  %3 = alloca i8, align 1
  store i8 %0, ptr %3, align 1, !tbaa !5
  %4 = load i8, ptr %3, align 1, !tbaa !5
  %5 = sext i8 %4 to i32
  %6 = call i32 @tolower(i32 noundef %5) #2
  %7 = trunc i32 %6 to i8
  store i8 %7, ptr %3, align 1, !tbaa !5
  %8 = load i8, ptr %3, align 1, !tbaa !5
  %9 = sext i8 %8 to i32
  %10 = icmp eq i32 %9, 101
  br i1 %10, label %31, label %11

11:                                               ; preds = %1
  %12 = load i8, ptr %3, align 1, !tbaa !5
  %13 = sext i8 %12 to i32
  %14 = icmp eq i32 %13, 97
  br i1 %14, label %31, label %15

15:                                               ; preds = %11
  %16 = load i8, ptr %3, align 1, !tbaa !5
  %17 = sext i8 %16 to i32
  %18 = icmp eq i32 %17, 105
  br i1 %18, label %31, label %19

19:                                               ; preds = %15
  %20 = load i8, ptr %3, align 1, !tbaa !5
  %21 = sext i8 %20 to i32
  %22 = icmp eq i32 %21, 111
  br i1 %22, label %31, label %23

23:                                               ; preds = %19
  %24 = load i8, ptr %3, align 1, !tbaa !5
  %25 = sext i8 %24 to i32
  %26 = icmp eq i32 %25, 117
  br i1 %26, label %31, label %27

27:                                               ; preds = %23
  %28 = load i8, ptr %3, align 1, !tbaa !5
  %29 = sext i8 %28 to i32
  %30 = icmp eq i32 %29, 121
  br i1 %30, label %31, label %32

31:                                               ; preds = %27, %23, %19, %15, %11, %1
  store i1 true, ptr %2, align 1
  br label %33

32:                                               ; preds = %27
  store i1 false, ptr %2, align 1
  br label %33

33:                                               ; preds = %32, %31
  %34 = load i1, ptr %2, align 1
  ret i1 %34
}

; Function Attrs: inlinehint mustprogress nounwind willreturn memory(read) uwtable
declare i32 @tolower(i32 noundef) #1

attributes #0 = { 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 #1 = { inlinehint mustprogress nounwind willreturn memory(read) 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 = { nounwind willreturn memory(read) }

!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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"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"

; Function Attrs: mustprogress nofree nounwind willreturn memory(read) uwtable
define dso_local noundef zeroext i1 @_Z7isVowelc(i8 noundef signext %0) local_unnamed_addr #0 {
  %2 = sext i8 %0 to i32
  %3 = tail call i32 @tolower(i32 noundef %2) #2
  %sext = shl i32 %3, 24
  %4 = and i32 %3, 251
  %or.cond = icmp eq i32 %4, 97
  %5 = insertelement <4 x i32> poison, i32 %sext, i64 0
  %6 = shufflevector <4 x i32> %5, <4 x i32> poison, <4 x i32> zeroinitializer
  %7 = icmp eq <4 x i32> %6, <i32 1761607680, i32 1862270976, i32 1962934272, i32 2030043136>
  %8 = bitcast <4 x i1> %7 to i4
  %9 = icmp ne i4 %8, 0
  %op.rdx = or i1 %9, %or.cond
  ret i1 %op.rdx
}

; Function Attrs: inlinehint mustprogress nofree nounwind willreturn memory(read) uwtable
declare i32 @tolower(i32 noundef) local_unnamed_addr #1

attributes #0 = { mustprogress nofree nounwind willreturn memory(read) 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 #1 = { inlinehint mustprogress nofree nounwind willreturn memory(read) 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 = { nounwind willreturn memory(read) }

!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: EarlyCSEPass,GlobalDCEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SLPVectorizerPass,SROAPass,SimplifyCFGPass,TailCallElimPass