; LLVM IR from libtcod/libtcod :: src/libtcod/color_.ll (ZN9TCODColor13getSaturationEv)

; 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.TCOD_ColorRGB = type { i8, i8, i8 }
%class.TCODColor = type { i8, i8, i8 }

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

declare i32 @__gxx_personality_v0(...)

; Function Attrs: noinline noreturn nounwind uwtable
declare hidden void @__clang_call_terminate(ptr noundef) #1

; 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 nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef float @_ZN9TCODColor13getSaturationEv(ptr noundef nonnull align 1 dereferenceable(3) %0) #3 align 2 personality ptr @__gxx_personality_v0 {
  %2 = alloca ptr, align 8
  %3 = alloca %struct.TCOD_ColorRGB, align 1
  %4 = alloca %struct.TCOD_ColorRGB, align 1
  %5 = alloca i24, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %6 = load ptr, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 3, ptr %3) #5
  %7 = getelementptr inbounds %struct.TCOD_ColorRGB, ptr %3, i32 0, i32 0
  %8 = getelementptr inbounds %class.TCODColor, ptr %6, i32 0, i32 0
  %9 = load i8, ptr %8, align 1, !tbaa !9
  store i8 %9, ptr %7, align 1, !tbaa !11
  %10 = getelementptr inbounds %struct.TCOD_ColorRGB, ptr %3, i32 0, i32 1
  %11 = getelementptr inbounds %class.TCODColor, ptr %6, i32 0, i32 1
  %12 = load i8, ptr %11, align 1, !tbaa !13
  store i8 %12, ptr %10, align 1, !tbaa !14
  %13 = getelementptr inbounds %struct.TCOD_ColorRGB, ptr %3, i32 0, i32 2
  %14 = getelementptr inbounds %class.TCODColor, ptr %6, i32 0, i32 2
  %15 = load i8, ptr %14, align 1, !tbaa !15
  store i8 %15, ptr %13, align 1, !tbaa !16
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %4, ptr align 1 %3, i64 3, i1 false), !tbaa.struct !17
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %5, ptr align 1 %4, i64 3, i1 false)
  %16 = load i24, ptr %5, align 4
  %17 = invoke float @TCOD_color_get_saturation(i24 %16)
          to label %18 unwind label %19

18:                                               ; preds = %1
  call void @llvm.lifetime.end.p0(i64 3, ptr %3) #5
  ret float %17

19:                                               ; preds = %1
  %20 = landingpad { ptr, i32 }
          catch ptr null
  %21 = extractvalue { ptr, i32 } %20, 0
  call void @__clang_call_terminate(ptr %21) #6
  unreachable
}

declare float @TCOD_color_get_saturation(i24) #4

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { noinline noreturn nounwind uwtable "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 #2 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #4 = { "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 #5 = { nounwind }
attributes #6 = { noreturn 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, !7, i64 0}
!10 = !{!"_ZTS9TCODColor", !7, i64 0, !7, i64 1, !7, i64 2}
!11 = !{!12, !7, i64 0}
!12 = !{!"_ZTS13TCOD_ColorRGB", !7, i64 0, !7, i64 1, !7, i64 2}
!13 = !{!10, !7, i64 1}
!14 = !{!12, !7, i64 1}
!15 = !{!10, !7, i64 2}
!16 = !{!12, !7, i64 2}
!17 = !{i64 0, i64 1, !18, i64 1, i64 1, !18, i64 2, i64 1, !18}
!18 = !{!7, !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"

declare i32 @__gxx_personality_v0(...)

; Function Attrs: noinline noreturn nounwind uwtable
declare hidden void @__clang_call_terminate(ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef float @_ZN9TCODColor13getSaturationEv(ptr nocapture noundef nonnull readonly align 1 dereferenceable(3) %0) local_unnamed_addr #1 align 2 personality ptr @__gxx_personality_v0 {
  %2 = load i8, ptr %0, align 1, !tbaa !5
  %3 = getelementptr inbounds i8, ptr %0, i64 1
  %4 = load i16, ptr %3, align 1
  %5 = zext i16 %4 to i24
  %6 = shl nuw i24 %5, 8
  %.sroa.01.0.insert.ext = zext i8 %2 to i24
  %.sroa.01.0.insert.insert = or disjoint i24 %6, %.sroa.01.0.insert.ext
  %7 = invoke float @TCOD_color_get_saturation(i24 %.sroa.01.0.insert.insert)
          to label %8 unwind label %9

8:                                                ; preds = %1
  ret float %7

9:                                                ; preds = %1
  %10 = landingpad { ptr, i32 }
          catch ptr null
  %11 = extractvalue { ptr, i32 } %10, 0
  tail call void @__clang_call_terminate(ptr %11) #3
  unreachable
}

declare float @TCOD_color_get_saturation(i24) local_unnamed_addr #2

attributes #0 = { noinline noreturn nounwind uwtable "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 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 #2 = { "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 = { noreturn 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, !7, i64 0}
!6 = !{!"_ZTS9TCODColor", !7, i64 0, !7, i64 1, !7, i64 2}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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