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

; 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.EXTI_Core_TypeDef = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 }

; Function Attrs: nounwind uwtable
define dso_local void @HAL_GPIO_EXTI_IRQHandler(i16 noundef zeroext %0) #0 {
  %2 = alloca i16, align 2
  store i16 %0, ptr %2, align 2, !tbaa !5
  %3 = load volatile i32, ptr getelementptr inbounds (%struct.EXTI_Core_TypeDef, ptr inttoptr (i64 1476395136 to ptr), i32 0, i32 2), align 4, !tbaa !9
  %4 = load i16, ptr %2, align 2, !tbaa !5
  %5 = zext i16 %4 to i32
  %6 = and i32 %3, %5
  %7 = icmp ne i32 %6, 0
  br i1 %7, label %8, label %12

8:                                                ; preds = %1
  %9 = load i16, ptr %2, align 2, !tbaa !5
  %10 = zext i16 %9 to i32
  store volatile i32 %10, ptr getelementptr inbounds (%struct.EXTI_Core_TypeDef, ptr inttoptr (i64 1476395136 to ptr), i32 0, i32 2), align 4, !tbaa !9
  %11 = load i16, ptr %2, align 2, !tbaa !5
  call void @HAL_GPIO_EXTI_Callback(i16 noundef zeroext %11)
  br label %12

12:                                               ; preds = %8, %1
  ret void
}

; Function Attrs: nounwind uwtable
declare dso_local void @HAL_GPIO_EXTI_Callback(i16 noundef zeroext) #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, !6, i64 0}
!6 = !{!"short", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !11, i64 8}
!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, i64 32, !11, i64 36, !11, i64 40}
!11 = !{!"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"

; Function Attrs: nounwind uwtable
define dso_local void @HAL_GPIO_EXTI_IRQHandler(i16 noundef zeroext %0) local_unnamed_addr #0 {
  %2 = load volatile i32, ptr inttoptr (i64 1476395144 to ptr), align 8, !tbaa !5
  %3 = zext i16 %0 to i32
  %4 = and i32 %2, %3
  %.not = icmp eq i32 %4, 0
  br i1 %.not, label %6, label %5

5:                                                ; preds = %1
  store volatile i32 %3, ptr inttoptr (i64 1476395144 to ptr), align 8, !tbaa !5
  tail call void @HAL_GPIO_EXTI_Callback(i16 noundef zeroext %0)
  br label %6

6:                                                ; preds = %5, %1
  ret void
}

; Function Attrs: nounwind uwtable
declare dso_local void @HAL_GPIO_EXTI_Callback(i16 noundef zeroext) local_unnamed_addr #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, !7, i64 8}
!6 = !{!"", !7, i64 0, !7, i64 4, !7, i64 8, !7, i64 12, !7, i64 16, !7, i64 20, !7, i64 24, !7, i64 28, !7, i64 32, !7, i64 36, !7, i64 40}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferAlignmentPass,InstCombinePass,SROAPass,TailCallElimPass