; LLVM IR from ravireddy07/cpp-book :: src/Code-Chef/JAN2021-Long/CURMAT.ll (Z11mul_to_rooti)

; 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"

@p = external dso_local global i32, align 4
@par = external dso_local global [200000 x i32], align 16
@weight = external dso_local global [200000 x i32], align 16

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z11mul_to_rooti(i32 noundef %0) #0 {
  %2 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  %3 = load i32, ptr %2, align 4, !tbaa !5
  %4 = load i32, ptr %2, align 4, !tbaa !5
  %5 = sext i32 %4 to i64
  %6 = getelementptr inbounds [200000 x i32], ptr @par, i64 0, i64 %5
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %8 = icmp eq i32 %3, %7
  br i1 %8, label %9, label %10

9:                                                ; preds = %1
  br label %26

10:                                               ; preds = %1
  %11 = load i32, ptr %2, align 4, !tbaa !5
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds [200000 x i32], ptr @weight, i64 0, i64 %12
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = load i32, ptr %2, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [200000 x i32], ptr @par, i64 0, i64 %17
  %19 = load i32, ptr %18, align 4, !tbaa !5
  %20 = call noundef i32 @_Z11mul_to_rooti(i32 noundef %19)
  %21 = sext i32 %20 to i64
  %22 = mul nsw i64 %15, %21
  %23 = load i32, ptr @p, align 4, !tbaa !5
  %24 = sext i32 %23 to i64
  %25 = srem i64 %22, %24
  br label %26

26:                                               ; preds = %10, %9
  %27 = phi i64 [ 1, %9 ], [ %25, %10 ]
  %28 = trunc i64 %27 to i32
  ret i32 %28
}

attributes #0 = { mustprogress 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


; 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"

@p = external dso_local local_unnamed_addr global i32, align 4
@par = external dso_local local_unnamed_addr global [200000 x i32], align 16
@weight = external dso_local local_unnamed_addr global [200000 x i32], align 16

; Function Attrs: mustprogress nofree nosync nounwind willreturn memory(read, argmem: none, inaccessiblemem: none) uwtable
define dso_local noundef range(i32 -2147483647, -2147483648) i32 @_Z11mul_to_rooti(i32 noundef %0) local_unnamed_addr #0 {
  %2 = sext i32 %0 to i64
  %3 = getelementptr inbounds [200000 x i32], ptr @par, i64 0, i64 %2
  %4 = load i32, ptr %3, align 4, !tbaa !5
  %5 = icmp eq i32 %4, %0
  br i1 %5, label %common.ret4, label %6

common.ret4:                                      ; preds = %1, %6
  %common.ret4.op = phi i32 [ %16, %6 ], [ 1, %1 ]
  ret i32 %common.ret4.op

6:                                                ; preds = %1
  %7 = getelementptr inbounds [200000 x i32], ptr @weight, i64 0, i64 %2
  %8 = load i32, ptr %7, align 4, !tbaa !5
  %9 = sext i32 %8 to i64
  %10 = tail call noundef i32 @_Z11mul_to_rooti(i32 noundef %4)
  %11 = sext i32 %10 to i64
  %12 = mul nsw i64 %11, %9
  %13 = load i32, ptr @p, align 4, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = srem i64 %12, %14
  %16 = trunc nsw i64 %15 to i32
  br label %common.ret4
}

attributes #0 = { mustprogress nofree nosync nounwind willreturn memory(read, argmem: none, inaccessiblemem: none) 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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