; LLVM IR from bohanwang/libpgo :: src/core/perlinNoise/perlinNoise.ll (ZN3pgo11PerlinNoise11PerlinNoise10gradient2DEidd)

; 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"

%"class.pgo::PerlinNoise::PerlinNoise" = type { [256 x i32], [4 x [2 x double]], [16 x [3 x double]], [32 x [4 x double]] }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef double @_ZN3pgo11PerlinNoise11PerlinNoise10gradient2DEidd(ptr noundef nonnull align 8 dereferenceable(2496) %0, i32 noundef %1, double noundef %2, double noundef %3) #2 align 2 {
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca double, align 8
  %8 = alloca double, align 8
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store double %2, ptr %7, align 8, !tbaa !11
  store double %3, ptr %8, align 8, !tbaa !11
  %10 = load ptr, ptr %5, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  %11 = load i32, ptr %6, align 4, !tbaa !9
  %12 = and i32 %11, 3
  store i32 %12, ptr %9, align 4, !tbaa !9
  %13 = getelementptr inbounds %"class.pgo::PerlinNoise::PerlinNoise", ptr %10, i32 0, i32 1
  %14 = load i32, ptr %9, align 4, !tbaa !9
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds [4 x [2 x double]], ptr %13, i64 0, i64 %15
  %17 = getelementptr inbounds [2 x double], ptr %16, i64 0, i64 0
  %18 = load double, ptr %17, align 8, !tbaa !11
  %19 = load double, ptr %7, align 8, !tbaa !11
  %20 = getelementptr inbounds %"class.pgo::PerlinNoise::PerlinNoise", ptr %10, i32 0, i32 1
  %21 = load i32, ptr %9, align 4, !tbaa !9
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds [4 x [2 x double]], ptr %20, i64 0, i64 %22
  %24 = getelementptr inbounds [2 x double], ptr %23, i64 0, i64 1
  %25 = load double, ptr %24, align 8, !tbaa !11
  %26 = load double, ptr %8, align 8, !tbaa !11
  %27 = fmul double %25, %26
  %28 = call double @llvm.fmuladd.f64(double %18, double %19, double %27)
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  ret double %28
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #2 = { mustprogress 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 #3 = { nounwind }

!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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"double", !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: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #0

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) uwtable
define dso_local noundef double @_ZN3pgo11PerlinNoise11PerlinNoise10gradient2DEidd(ptr nocapture noundef nonnull readonly align 8 dereferenceable(2496) %0, i32 noundef %1, double noundef %2, double noundef %3) local_unnamed_addr #1 align 2 {
  %5 = and i32 %1, 3
  %6 = getelementptr inbounds i8, ptr %0, i64 1024
  %7 = zext nneg i32 %5 to i64
  %8 = getelementptr inbounds [4 x [2 x double]], ptr %6, i64 0, i64 %7
  %9 = load double, ptr %8, align 8, !tbaa !5
  %10 = getelementptr inbounds i8, ptr %8, i64 8
  %11 = load double, ptr %10, align 8, !tbaa !5
  %12 = fmul double %11, %3
  %13 = tail call double @llvm.fmuladd.f64(double %9, double %2, double %12)
  ret double %13
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #1 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) 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 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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