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

; 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.MDIOS_HandleTypeDef = type { ptr, %struct.MDIOS_InitTypeDef, i32, i32, i32 }
%struct.MDIOS_InitTypeDef = type { i32, i32 }
%struct.MDIOS_TypeDef = type { i32, i32, i32, i32, i32, i32, i32, [57 x i32], i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 }

; Function Attrs: nounwind uwtable
define dso_local i32 @HAL_MDIOS_ClearReadRegAddress(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  br label %6

6:                                                ; preds = %2
  %7 = load ptr, ptr %4, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.MDIOS_HandleTypeDef, ptr %7, i32 0, i32 4
  %9 = load i32, ptr %8, align 8, !tbaa !11
  %10 = icmp eq i32 %9, 1
  br i1 %10, label %11, label %12

11:                                               ; preds = %6
  store i32 2, ptr %3, align 4
  br label %28

12:                                               ; preds = %6
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.MDIOS_HandleTypeDef, ptr %13, i32 0, i32 4
  store i32 1, ptr %14, align 8, !tbaa !11
  br label %15

15:                                               ; preds = %12
  br label %16

16:                                               ; preds = %15
  %17 = load i32, ptr %5, align 4, !tbaa !9
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.MDIOS_HandleTypeDef, ptr %18, i32 0, i32 0
  %20 = load ptr, ptr %19, align 8, !tbaa !14
  %21 = getelementptr inbounds %struct.MDIOS_TypeDef, ptr %20, i32 0, i32 4
  %22 = load volatile i32, ptr %21, align 4, !tbaa !15
  %23 = or i32 %22, %17
  store volatile i32 %23, ptr %21, align 4, !tbaa !15
  br label %24

24:                                               ; preds = %16
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.MDIOS_HandleTypeDef, ptr %25, i32 0, i32 4
  store i32 0, ptr %26, align 8, !tbaa !11
  br label %27

27:                                               ; preds = %24
  store i32 0, ptr %3, align 4
  br label %28

28:                                               ; preds = %27, %11
  %29 = load i32, ptr %3, align 4
  ret i32 %29
}

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" }

!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 24}
!12 = !{!"", !6, i64 0, !13, i64 8, !10, i64 16, !10, i64 20, !10, i64 24}
!13 = !{!"", !10, i64 0, !10, i64 4}
!14 = !{!12, !6, i64 0}
!15 = !{!16, !10, i64 16}
!16 = !{!"", !10, i64 0, !10, i64 4, !10, i64 8, !10, i64 12, !10, i64 16, !10, i64 20, !10, i64 24, !7, i64 28, !10, i64 256, !10, i64 260, !10, i64 264, !10, i64 268, !10, i64 272, !10, i64 276, !10, i64 280, !10, i64 284, !10, i64 288, !10, i64 292, !10, i64 296, !10, i64 300, !10, i64 304, !10, i64 308, !10, i64 312, !10, i64 316, !10, i64 320, !10, i64 324, !10, i64 328, !10, i64 332, !10, i64 336, !10, i64 340, !10, i64 344, !10, i64 348, !10, i64 352, !10, i64 356, !10, i64 360, !10, i64 364, !10, i64 368, !10, i64 372, !10, i64 376, !10, i64 380, !10, i64 384, !10, i64 388, !10, i64 392, !10, i64 396, !10, i64 400, !10, i64 404, !10, i64 408, !10, i64 412, !10, i64 416, !10, i64 420, !10, i64 424, !10, i64 428, !10, i64 432, !10, i64 436, !10, i64 440, !10, i64 444, !10, i64 448, !10, i64 452, !10, i64 456, !10, i64 460, !10, i64 464, !10, i64 468, !10, i64 472, !10, i64 476, !10, i64 480, !10, i64 484, !10, i64 488, !10, i64 492, !10, i64 496, !10, i64 500, !10, i64 504, !10, i64 508}


; 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, 3) i32 @HAL_MDIOS_ClearReadRegAddress(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 24
  %4 = load i32, ptr %3, align 8, !tbaa !5
  %5 = icmp eq i32 %4, 1
  br i1 %5, label %11, label %6

6:                                                ; preds = %2
  %7 = load ptr, ptr %0, align 8, !tbaa !12
  %8 = getelementptr inbounds i8, ptr %7, i64 16
  %9 = load volatile i32, ptr %8, align 4, !tbaa !13
  %10 = or i32 %9, %1
  store volatile i32 %10, ptr %8, align 4, !tbaa !13
  store i32 0, ptr %3, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %2, %6
  %.0 = phi i32 [ 0, %6 ], [ 2, %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, !11, i64 24}
!6 = !{!"", !7, i64 0, !10, i64 8, !11, i64 16, !11, i64 20, !11, i64 24}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"", !11, i64 0, !11, i64 4}
!11 = !{!"int", !8, i64 0}
!12 = !{!6, !7, i64 0}
!13 = !{!14, !11, i64 16}
!14 = !{!"", !11, i64 0, !11, i64 4, !11, i64 8, !11, i64 12, !11, i64 16, !11, i64 20, !11, i64 24, !8, i64 28, !11, i64 256, !11, i64 260, !11, i64 264, !11, i64 268, !11, i64 272, !11, i64 276, !11, i64 280, !11, i64 284, !11, i64 288, !11, i64 292, !11, i64 296, !11, i64 300, !11, i64 304, !11, i64 308, !11, i64 312, !11, i64 316, !11, i64 320, !11, i64 324, !11, i64 328, !11, i64 332, !11, i64 336, !11, i64 340, !11, i64 344, !11, i64 348, !11, i64 352, !11, i64 356, !11, i64 360, !11, i64 364, !11, i64 368, !11, i64 372, !11, i64 376, !11, i64 380, !11, i64 384, !11, i64 388, !11, i64 392, !11, i64 396, !11, i64 400, !11, i64 404, !11, i64 408, !11, i64 412, !11, i64 416, !11, i64 420, !11, i64 424, !11, i64 428, !11, i64 432, !11, i64 436, !11, i64 440, !11, i64 444, !11, i64 448, !11, i64 452, !11, i64 456, !11, i64 460, !11, i64 464, !11, i64 468, !11, i64 472, !11, i64 476, !11, i64 480, !11, i64 484, !11, i64 488, !11, i64 492, !11, i64 496, !11, i64 500, !11, i64 504, !11, i64 508}


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