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

; 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.__I2C_HandleTypeDef = type { ptr, %struct.I2C_InitTypeDef, ptr, i16, i16, i32, i32, ptr, ptr, ptr, i32, i32, i32, i32, i32 }
%struct.I2C_InitTypeDef = type { i32, i32, i32, i32, i32, i32, i32, i32 }

; Function Attrs: nounwind uwtable
declare hidden void @I2C_Enable_IRQ(ptr noundef, i16 noundef zeroext) #0

; Function Attrs: nounwind uwtable
declare hidden i32 @I2C_Slave_ISR_IT(ptr noundef, i32 noundef, i32 noundef) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @HAL_I2C_EnableListen_IT(ptr noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = getelementptr inbounds %struct.__I2C_HandleTypeDef, ptr %4, i32 0, i32 11
  %6 = load volatile i32, ptr %5, align 4, !tbaa !9
  %7 = icmp eq i32 %6, 32
  br i1 %7, label %8, label %14

8:                                                ; preds = %1
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.__I2C_HandleTypeDef, ptr %9, i32 0, i32 11
  store volatile i32 40, ptr %10, align 4, !tbaa !9
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.__I2C_HandleTypeDef, ptr %11, i32 0, i32 7
  store ptr @I2C_Slave_ISR_IT, ptr %12, align 8, !tbaa !14
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  call void @I2C_Enable_IRQ(ptr noundef %13, i16 noundef zeroext 4)
  store i32 0, ptr %2, align 4
  br label %15

14:                                               ; preds = %1
  store i32 2, ptr %2, align 4
  br label %15

15:                                               ; preds = %14, %8
  %16 = load i32, ptr %2, align 4
  ret i32 %16
}

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, !12, i64 92}
!10 = !{!"__I2C_HandleTypeDef", !6, i64 0, !11, i64 8, !6, i64 40, !13, i64 48, !13, i64 50, !12, i64 52, !12, i64 56, !6, i64 64, !6, i64 72, !6, i64 80, !12, i64 88, !12, i64 92, !12, i64 96, !12, i64 100, !12, i64 104}
!11 = !{!"", !12, i64 0, !12, i64 4, !12, i64 8, !12, i64 12, !12, i64 16, !12, i64 20, !12, i64 24, !12, i64 28}
!12 = !{!"int", !7, i64 0}
!13 = !{!"short", !7, i64 0}
!14 = !{!10, !6, i64 64}


; 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: nounwind uwtable
declare hidden void @I2C_Enable_IRQ(ptr noundef, i16 noundef zeroext) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare hidden i32 @I2C_Slave_ISR_IT(ptr noundef, i32 noundef, i32 noundef) #0

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 3) i32 @HAL_I2C_EnableListen_IT(ptr noundef %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 92
  %3 = load volatile i32, ptr %2, align 4, !tbaa !5
  %4 = icmp eq i32 %3, 32
  br i1 %4, label %5, label %7

5:                                                ; preds = %1
  store volatile i32 40, ptr %2, align 4, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %0, i64 64
  store ptr @I2C_Slave_ISR_IT, ptr %6, align 8, !tbaa !13
  tail call void @I2C_Enable_IRQ(ptr noundef nonnull %0, i16 noundef zeroext 4)
  br label %7

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

!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 92}
!6 = !{!"__I2C_HandleTypeDef", !7, i64 0, !10, i64 8, !7, i64 40, !12, i64 48, !12, i64 50, !11, i64 52, !11, i64 56, !7, i64 64, !7, i64 72, !7, i64 80, !11, i64 88, !11, i64 92, !11, i64 96, !11, i64 100, !11, i64 104}
!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, i64 8, !11, i64 12, !11, i64 16, !11, i64 20, !11, i64 24, !11, i64 28}
!11 = !{!"int", !8, i64 0}
!12 = !{!"short", !8, i64 0}
!13 = !{!6, !7, i64 64}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass