; LLVM IR from googlecreativelab/open-nsynth-super :: app/open-nsynth/src/Gpio.ll (ZN4Gpio9setOutputEi)

; 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"

%class.Gpio = type { ptr }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_ZN4Gpio9setOutputEi(ptr noundef nonnull align 8 dereferenceable(8) %0, i32 noundef %1) #1 align 2 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %8 = load ptr, ptr %4, align 8
  %9 = getelementptr inbounds %class.Gpio, ptr %8, i32 0, i32 0
  %10 = load ptr, ptr %9, align 8, !tbaa !11
  %11 = icmp ne ptr %10, null
  br i1 %11, label %12, label %18

12:                                               ; preds = %2
  %13 = load i32, ptr %5, align 4, !tbaa !9
  %14 = icmp slt i32 %13, 2
  br i1 %14, label %18, label %15

15:                                               ; preds = %12
  %16 = load i32, ptr %5, align 4, !tbaa !9
  %17 = icmp sgt i32 %16, 27
  br i1 %17, label %18, label %19

18:                                               ; preds = %15, %12, %2
  store i1 false, ptr %3, align 1
  br label %43

19:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  %20 = load i32, ptr %5, align 4, !tbaa !9
  %21 = sdiv i32 %20, 10
  store i32 %21, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %22 = load i32, ptr %5, align 4, !tbaa !9
  %23 = srem i32 %22, 10
  %24 = mul nsw i32 %23, 3
  store i32 %24, ptr %7, align 4, !tbaa !9
  %25 = getelementptr inbounds %class.Gpio, ptr %8, i32 0, i32 0
  %26 = load ptr, ptr %25, align 8, !tbaa !11
  %27 = load i32, ptr %6, align 4, !tbaa !9
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds i32, ptr %26, i64 %28
  %30 = load volatile i32, ptr %29, align 4, !tbaa !9
  %31 = load i32, ptr %7, align 4, !tbaa !9
  %32 = shl i32 7, %31
  %33 = xor i32 %32, -1
  %34 = and i32 %30, %33
  %35 = load i32, ptr %7, align 4, !tbaa !9
  %36 = shl i32 1, %35
  %37 = or i32 %34, %36
  %38 = getelementptr inbounds %class.Gpio, ptr %8, i32 0, i32 0
  %39 = load ptr, ptr %38, align 8, !tbaa !11
  %40 = load i32, ptr %6, align 4, !tbaa !9
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds i32, ptr %39, i64 %41
  store volatile i32 %37, ptr %42, align 4, !tbaa !9
  store i1 true, ptr %3, align 1
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  br label %43

43:                                               ; preds = %19, %18
  %44 = load i1, ptr %3, align 1
  ret i1 %44
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { nounwind }

!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 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 0}
!12 = !{!"_ZTS4Gpio", !6, i64 0}


; 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 norecurse nounwind uwtable
define dso_local noundef zeroext i1 @_ZN4Gpio9setOutputEi(ptr nocapture noundef nonnull readonly align 8 dereferenceable(8) %0, i32 noundef %1) local_unnamed_addr #0 align 2 {
  %3 = load ptr, ptr %0, align 8, !tbaa !5
  %4 = icmp ne ptr %3, null
  %5 = add i32 %1, -2
  %6 = icmp ult i32 %5, 26
  %or.cond3.not = and i1 %6, %4
  br i1 %or.cond3.not, label %7, label %19

7:                                                ; preds = %2
  %.lhs.trunc = trunc nuw i32 %1 to i8
  %8 = udiv i8 %.lhs.trunc, 10
  %9 = urem i8 %.lhs.trunc, 10
  %narrow = mul nuw nsw i8 %9, 3
  %10 = zext nneg i8 %narrow to i32
  %11 = zext nneg i8 %8 to i64
  %12 = getelementptr inbounds i32, ptr %3, i64 %11
  %13 = load volatile i32, ptr %12, align 4, !tbaa !10
  %14 = shl nuw nsw i32 7, %10
  %15 = xor i32 %14, -1
  %16 = and i32 %13, %15
  %17 = shl nuw nsw i32 1, %10
  %18 = or i32 %16, %17
  store volatile i32 %18, ptr %12, align 4, !tbaa !10
  br label %19

19:                                               ; preds = %2, %7
  ret i1 %or.cond3.not
}

attributes #0 = { mustprogress nofree norecurse 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)"}
!5 = !{!6, !7, i64 0}
!6 = !{!"_ZTS4Gpio", !7, i64 0}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!11, !11, i64 0}
!11 = !{!"int", !8, i64 0}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass