; LLVM IR from libtcod/libtcod :: src/libtcod/console_.ll (ZN11TCODConsole14getFadingColorEv)

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

; 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) #1

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN9TCODColorC2ERK13TCOD_ColorRGB(ptr noundef nonnull align 1 dereferenceable(3), ptr noundef nonnull align 1 dereferenceable(3)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local i24 @_ZN11TCODConsole14getFadingColorEv() #3 align 2 {
  %1 = alloca %class.TCODColor, align 1
  %2 = alloca %struct.TCOD_ColorRGB, align 1
  %3 = alloca i24, align 4
  call void @llvm.lifetime.start.p0(i64 3, ptr %2) #5
  %4 = call i24 @TCOD_console_get_fading_color()
  store i24 %4, ptr %2, align 1
  call void @_ZN9TCODColorC2ERK13TCOD_ColorRGB(ptr noundef nonnull align 1 dereferenceable(3) %1, ptr noundef nonnull align 1 dereferenceable(3) %2) #5
  call void @llvm.lifetime.end.p0(i64 3, ptr %2) #5
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %3, ptr align 1 %1, i64 3, i1 false)
  %5 = load i24, ptr %3, align 4
  ret i24 %5
}

declare i24 @TCOD_console_get_fading_color() #4

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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 = { 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" }
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 }

!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)"}


; 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"

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

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

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN9TCODColorC2ERK13TCOD_ColorRGB(ptr noundef nonnull align 1 dereferenceable(3), ptr noundef nonnull align 1 dereferenceable(3)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local i24 @_ZN11TCODConsole14getFadingColorEv() local_unnamed_addr #2 align 2 {
  %1 = alloca %class.TCODColor, align 4
  %2 = alloca %struct.TCOD_ColorRGB, align 4
  call void @llvm.lifetime.start.p0(i64 3, ptr nonnull %2) #4
  %3 = tail call i24 @TCOD_console_get_fading_color()
  store i24 %3, ptr %2, align 4
  call void @_ZN9TCODColorC2ERK13TCOD_ColorRGB(ptr noundef nonnull align 1 dereferenceable(3) %1, ptr noundef nonnull align 1 dereferenceable(3) %2) #4
  call void @llvm.lifetime.end.p0(i64 3, ptr nonnull %2) #4
  %.0.copyload = load i24, ptr %1, align 4
  ret i24 %.0.copyload
}

declare i24 @TCOD_console_get_fading_color() local_unnamed_addr #3

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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" }
attributes #3 = { "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 = { 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)"}


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