; LLVM IR from FedericaPaoli1/stm32-speech-recognition-and-traduction :: Drivers/CMSIS/DSP/Source/ControllerFunctions (arm_pid_init_f32)

; 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.arm_pid_instance_f32 = type { float, float, float, [3 x float], float, float, float }

; Function Attrs: nounwind uwtable
define dso_local void @arm_pid_init_f32(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %5 = load ptr, ptr %3, align 8, !tbaa !5
  %6 = getelementptr inbounds %struct.arm_pid_instance_f32, ptr %5, i32 0, i32 4
  %7 = load float, ptr %6, align 4, !tbaa !11
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.arm_pid_instance_f32, ptr %8, i32 0, i32 5
  %10 = load float, ptr %9, align 4, !tbaa !14
  %11 = fadd float %7, %10
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.arm_pid_instance_f32, ptr %12, i32 0, i32 6
  %14 = load float, ptr %13, align 4, !tbaa !15
  %15 = fadd float %11, %14
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.arm_pid_instance_f32, ptr %16, i32 0, i32 0
  store float %15, ptr %17, align 4, !tbaa !16
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.arm_pid_instance_f32, ptr %18, i32 0, i32 4
  %20 = load float, ptr %19, align 4, !tbaa !11
  %21 = fneg float %20
  %22 = load ptr, ptr %3, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.arm_pid_instance_f32, ptr %22, i32 0, i32 6
  %24 = load float, ptr %23, align 4, !tbaa !15
  %25 = call float @llvm.fmuladd.f32(float -2.000000e+00, float %24, float %21)
  %26 = load ptr, ptr %3, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.arm_pid_instance_f32, ptr %26, i32 0, i32 1
  store float %25, ptr %27, align 4, !tbaa !17
  %28 = load ptr, ptr %3, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.arm_pid_instance_f32, ptr %28, i32 0, i32 6
  %30 = load float, ptr %29, align 4, !tbaa !15
  %31 = load ptr, ptr %3, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.arm_pid_instance_f32, ptr %31, i32 0, i32 2
  store float %30, ptr %32, align 4, !tbaa !18
  %33 = load i32, ptr %4, align 4, !tbaa !9
  %34 = icmp ne i32 %33, 0
  br i1 %34, label %35, label %39

35:                                               ; preds = %2
  %36 = load ptr, ptr %3, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.arm_pid_instance_f32, ptr %36, i32 0, i32 3
  %38 = getelementptr inbounds [3 x float], ptr %37, i64 0, i64 0
  call void @llvm.memset.p0.i64(ptr align 4 %38, i8 0, i64 12, i1 false)
  br label %39

39:                                               ; preds = %35, %2
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

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 speculatable willreturn memory(none) }
attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: write) }

!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, !13, i64 24}
!12 = !{!"", !13, i64 0, !13, i64 4, !13, i64 8, !7, i64 12, !13, i64 24, !13, i64 28, !13, i64 32}
!13 = !{!"float", !7, i64 0}
!14 = !{!12, !13, i64 28}
!15 = !{!12, !13, i64 32}
!16 = !{!12, !13, i64 0}
!17 = !{!12, !13, i64 4}
!18 = !{!12, !13, i64 8}


; 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: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) uwtable
define dso_local void @arm_pid_init_f32(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 24
  %4 = load float, ptr %3, align 4, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %0, i64 28
  %6 = load float, ptr %5, align 4, !tbaa !10
  %7 = fadd float %4, %6
  %8 = getelementptr inbounds i8, ptr %0, i64 32
  %9 = load float, ptr %8, align 4, !tbaa !11
  %10 = fadd float %7, %9
  store float %10, ptr %0, align 4, !tbaa !12
  %11 = fneg float %4
  %12 = tail call float @llvm.fmuladd.f32(float %9, float -2.000000e+00, float %11)
  %13 = getelementptr inbounds i8, ptr %0, i64 4
  store float %12, ptr %13, align 4, !tbaa !13
  %14 = getelementptr inbounds i8, ptr %0, i64 8
  store float %9, ptr %14, align 4, !tbaa !14
  %.not = icmp eq i32 %1, 0
  br i1 %.not, label %17, label %15

15:                                               ; preds = %2
  %16 = getelementptr inbounds i8, ptr %0, i64 12
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 4 dereferenceable(12) %16, i8 0, i64 12, i1 false)
  br label %17

17:                                               ; preds = %15, %2
  ret void
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #1

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) 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 speculatable willreturn memory(none) }
attributes #2 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }

!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 24}
!6 = !{!"", !7, i64 0, !7, i64 4, !7, i64 8, !8, i64 12, !7, i64 24, !7, i64 28, !7, i64 32}
!7 = !{!"float", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!6, !7, i64 28}
!11 = !{!6, !7, i64 32}
!12 = !{!6, !7, i64 0}
!13 = !{!6, !7, i64 4}
!14 = !{!6, !7, i64 8}


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