; LLVM IR from lichen-community-systems/signaletic :: hosts/daisy/vendor/libDaisy/Drivers/STM32H7xx_HAL_Driver/Src (ChannelModifyOffset)

; 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.DFSDM_Channel_HandleTypeDef = type { ptr, %struct.DFSDM_Channel_InitTypeDef, i32 }
%struct.DFSDM_Channel_InitTypeDef = type { %struct.DFSDM_Channel_OutputClockTypeDef, %struct.DFSDM_Channel_InputTypeDef, %struct.DFSDM_Channel_SerialInterfaceTypeDef, %struct.DFSDM_Channel_AwdTypeDef, i32, i32 }
%struct.DFSDM_Channel_OutputClockTypeDef = type { i32, i32, i32 }
%struct.DFSDM_Channel_InputTypeDef = type { i32, i32, i32 }
%struct.DFSDM_Channel_SerialInterfaceTypeDef = type { i32, i32 }
%struct.DFSDM_Channel_AwdTypeDef = type { i32, i32 }
%struct.DFSDM_Channel_TypeDef = type { i32, i32, i32, i32, i32 }

; 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: nounwind uwtable
define dso_local i32 @HAL_DFSDM_ChannelModifyOffset(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = 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 4, ptr %5) #2
  store i32 0, ptr %5, align 4, !tbaa !9
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.DFSDM_Channel_HandleTypeDef, ptr %6, i32 0, i32 2
  %8 = load i32, ptr %7, align 8, !tbaa !11
  %9 = icmp ne i32 %8, 1
  br i1 %9, label %10, label %11

10:                                               ; preds = %2
  store i32 1, ptr %5, align 4, !tbaa !9
  br label %28

11:                                               ; preds = %2
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.DFSDM_Channel_HandleTypeDef, ptr %12, i32 0, i32 0
  %14 = load ptr, ptr %13, align 8, !tbaa !16
  %15 = getelementptr inbounds %struct.DFSDM_Channel_TypeDef, ptr %14, i32 0, i32 1
  %16 = load volatile i32, ptr %15, align 4, !tbaa !17
  %17 = zext i32 %16 to i64
  %18 = and i64 %17, -4294967041
  %19 = trunc i64 %18 to i32
  store volatile i32 %19, ptr %15, align 4, !tbaa !17
  %20 = load i32, ptr %4, align 4, !tbaa !9
  %21 = shl i32 %20, 8
  %22 = load ptr, ptr %3, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.DFSDM_Channel_HandleTypeDef, ptr %22, i32 0, i32 0
  %24 = load ptr, ptr %23, align 8, !tbaa !16
  %25 = getelementptr inbounds %struct.DFSDM_Channel_TypeDef, ptr %24, i32 0, i32 1
  %26 = load volatile i32, ptr %25, align 4, !tbaa !17
  %27 = or i32 %26, %21
  store volatile i32 %27, ptr %25, align 4, !tbaa !17
  br label %28

28:                                               ; preds = %11, %10
  %29 = load i32, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret i32 %29
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 56}
!12 = !{!"", !6, i64 0, !13, i64 8, !10, i64 56}
!13 = !{!"", !14, i64 0, !14, i64 12, !15, i64 24, !15, i64 32, !10, i64 40, !10, i64 44}
!14 = !{!"", !10, i64 0, !10, i64 4, !10, i64 8}
!15 = !{!"", !10, i64 0, !10, i64 4}
!16 = !{!12, !6, i64 0}
!17 = !{!18, !10, i64 4}
!18 = !{!"", !10, i64 0, !10, i64 4, !10, i64 8, !10, i64 12, !10, i64 16}


; 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: nofree norecurse nounwind uwtable
define dso_local range(i32 0, 2) i32 @HAL_DFSDM_ChannelModifyOffset(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 56
  %4 = load i32, ptr %3, align 8, !tbaa !5
  %.not = icmp eq i32 %4, 1
  br i1 %.not, label %5, label %13

5:                                                ; preds = %2
  %6 = load ptr, ptr %0, align 8, !tbaa !14
  %7 = getelementptr inbounds i8, ptr %6, i64 4
  %8 = load volatile i32, ptr %7, align 4, !tbaa !15
  %9 = and i32 %8, 255
  store volatile i32 %9, ptr %7, align 4, !tbaa !15
  %10 = shl i32 %1, 8
  %11 = load volatile i32, ptr %7, align 4, !tbaa !15
  %12 = or i32 %11, %10
  store volatile i32 %12, ptr %7, align 4, !tbaa !15
  br label %13

13:                                               ; preds = %2, %5
  %.0 = phi i32 [ 0, %5 ], [ 1, %2 ]
  ret i32 %.0
}

attributes #0 = { 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, !12, i64 56}
!6 = !{!"", !7, i64 0, !10, i64 8, !12, i64 56}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"", !11, i64 0, !11, i64 12, !13, i64 24, !13, i64 32, !12, i64 40, !12, i64 44}
!11 = !{!"", !12, i64 0, !12, i64 4, !12, i64 8}
!12 = !{!"int", !8, i64 0}
!13 = !{!"", !12, i64 0, !12, i64 4}
!14 = !{!6, !7, i64 0}
!15 = !{!16, !12, i64 4}
!16 = !{!"", !12, i64 0, !12, i64 4, !12, i64 8, !12, i64 12, !12, i64 16}


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