; LLVM IR from Eclipse-SDV-Hackathon-Chapter-Two/challenge-threadx-and-beyond :: MXChip/AZ3166/lib/mxchip_bsp/stm_sensor/Src (lsm6dsl_reg)

; 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"

%struct.lsm6dsl_ctrl8_xl_t = type { i8 }

; Function Attrs: nounwind uwtable
declare dso_local i32 @lsm6dsl_read_reg(ptr noundef, i8 noundef zeroext, ptr noundef, i16 noundef zeroext) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @lsm6dsl_write_reg(ptr noundef, i8 noundef zeroext, ptr noundef, i16 noundef zeroext) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @lsm6dsl_xl_lp2_bandwidth_set(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca %struct.lsm6dsl_ctrl8_xl_t, align 1
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 1, ptr %5) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = call i32 @lsm6dsl_read_reg(ptr noundef %7, i8 noundef zeroext 23, ptr noundef %5, i16 noundef zeroext 1)
  store i32 %8, ptr %6, align 4, !tbaa !9
  %9 = load i32, ptr %6, align 4, !tbaa !9
  %10 = icmp eq i32 %9, 0
  br i1 %10, label %11, label %41

11:                                               ; preds = %2
  %12 = load i32, ptr %4, align 4, !tbaa !9
  %13 = trunc i32 %12 to i8
  %14 = zext i8 %13 to i32
  %15 = and i32 %14, 16
  %16 = lshr i32 %15, 4
  %17 = trunc i32 %16 to i8
  %18 = load i8, ptr %5, align 1
  %19 = and i8 %17, 1
  %20 = shl i8 %19, 3
  %21 = and i8 %18, -9
  %22 = or i8 %21, %20
  store i8 %22, ptr %5, align 1
  %23 = load i32, ptr %4, align 4, !tbaa !9
  %24 = trunc i32 %23 to i8
  %25 = zext i8 %24 to i32
  %26 = and i32 %25, 3
  %27 = trunc i32 %26 to i8
  %28 = load i8, ptr %5, align 1
  %29 = and i8 %27, 3
  %30 = shl i8 %29, 5
  %31 = and i8 %28, -97
  %32 = or i8 %31, %30
  store i8 %32, ptr %5, align 1
  %33 = load i8, ptr %5, align 1
  %34 = and i8 %33, 127
  %35 = or i8 %34, -128
  store i8 %35, ptr %5, align 1
  %36 = load i8, ptr %5, align 1
  %37 = and i8 %36, -5
  %38 = or i8 %37, 0
  store i8 %38, ptr %5, align 1
  %39 = load ptr, ptr %3, align 8, !tbaa !5
  %40 = call i32 @lsm6dsl_write_reg(ptr noundef %39, i8 noundef zeroext 23, ptr noundef %5, i16 noundef zeroext 1)
  store i32 %40, ptr %6, align 4, !tbaa !9
  br label %41

41:                                               ; preds = %11, %2
  %42 = load i32, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 1, ptr %5) #2
  ret i32 %42
}

attributes #0 = { 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, 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"

%struct.lsm6dsl_ctrl8_xl_t = type { i8 }

; Function Attrs: nounwind uwtable
declare dso_local i32 @lsm6dsl_read_reg(ptr noundef, i8 noundef zeroext, ptr noundef, i16 noundef zeroext) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @lsm6dsl_write_reg(ptr noundef, i8 noundef zeroext, ptr noundef, i16 noundef zeroext) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local i32 @lsm6dsl_xl_lp2_bandwidth_set(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = alloca %struct.lsm6dsl_ctrl8_xl_t, align 1
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %3) #2
  %4 = call i32 @lsm6dsl_read_reg(ptr noundef %0, i8 noundef zeroext 23, ptr noundef nonnull %3, i16 noundef zeroext 1)
  %5 = icmp eq i32 %4, 0
  br i1 %5, label %6, label %17

6:                                                ; preds = %2
  %7 = trunc i32 %1 to i8
  %8 = load i8, ptr %3, align 1
  %9 = lshr i8 %7, 1
  %10 = and i8 %9, 8
  %11 = and i8 %8, 19
  %12 = or disjoint i8 %10, %11
  %13 = shl i8 %7, 5
  %14 = or disjoint i8 %12, %13
  %15 = or i8 %14, -128
  store i8 %15, ptr %3, align 1
  %16 = call i32 @lsm6dsl_write_reg(ptr noundef %0, i8 noundef zeroext 23, ptr noundef nonnull %3, i16 noundef zeroext 1)
  br label %17

17:                                               ; preds = %6, %2
  %.0 = phi i32 [ %16, %6 ], [ %4, %2 ]
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %3) #2
  ret i32 %.0
}

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


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,ReassociatePass,SROAPass