; LLVM IR from Stephane-D/SGDK :: src (psg)

; 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"

; Function Attrs: nounwind uwtable
define dso_local void @PSG_reset() #0 {
  %1 = alloca ptr, align 8
  %2 = alloca i16, align 2
  call void @llvm.lifetime.start.p0(i64 8, ptr %1) #2
  call void @llvm.lifetime.start.p0(i64 2, ptr %2) #2
  store ptr inttoptr (i64 12582929 to ptr), ptr %1, align 8, !tbaa !5
  store i16 0, ptr %2, align 2, !tbaa !9
  br label %3

3:                                                ; preds = %23, %0
  %4 = load i16, ptr %2, align 2, !tbaa !9
  %5 = zext i16 %4 to i32
  %6 = icmp slt i32 %5, 4
  br i1 %6, label %7, label %26

7:                                                ; preds = %3
  %8 = load i16, ptr %2, align 2, !tbaa !9
  %9 = zext i16 %8 to i32
  %10 = shl i32 %9, 5
  %11 = or i32 128, %10
  %12 = or i32 %11, 0
  %13 = trunc i32 %12 to i8
  %14 = load ptr, ptr %1, align 8, !tbaa !5
  store volatile i8 %13, ptr %14, align 1, !tbaa !11
  %15 = load ptr, ptr %1, align 8, !tbaa !5
  store volatile i8 0, ptr %15, align 1, !tbaa !11
  %16 = load i16, ptr %2, align 2, !tbaa !9
  %17 = zext i16 %16 to i32
  %18 = shl i32 %17, 5
  %19 = or i32 144, %18
  %20 = or i32 %19, 15
  %21 = trunc i32 %20 to i8
  %22 = load ptr, ptr %1, align 8, !tbaa !5
  store volatile i8 %21, ptr %22, align 1, !tbaa !11
  br label %23

23:                                               ; preds = %7
  %24 = load i16, ptr %2, align 2, !tbaa !9
  %25 = add i16 %24, 1
  store i16 %25, ptr %2, align 2, !tbaa !9
  br label %3, !llvm.loop !12

26:                                               ; preds = %3
  call void @llvm.lifetime.end.p0(i64 2, ptr %2) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %1) #2
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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 willreturn memory(argmem: readwrite) }
attributes #2 = { 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"short", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; 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: nofree norecurse nounwind uwtable
define dso_local void @PSG_reset() local_unnamed_addr #0 {
  store volatile i8 -128, ptr inttoptr (i64 12582929 to ptr), align 1, !tbaa !5
  store volatile i8 0, ptr inttoptr (i64 12582929 to ptr), align 1, !tbaa !5
  store volatile i8 -97, ptr inttoptr (i64 12582929 to ptr), align 1, !tbaa !5
  store volatile i8 -96, ptr inttoptr (i64 12582929 to ptr), align 1, !tbaa !5
  store volatile i8 0, ptr inttoptr (i64 12582929 to ptr), align 1, !tbaa !5
  store volatile i8 -65, ptr inttoptr (i64 12582929 to ptr), align 1, !tbaa !5
  store volatile i8 -64, ptr inttoptr (i64 12582929 to ptr), align 1, !tbaa !5
  store volatile i8 0, ptr inttoptr (i64 12582929 to ptr), align 1, !tbaa !5
  store volatile i8 -33, ptr inttoptr (i64 12582929 to ptr), align 1, !tbaa !5
  store volatile i8 -32, ptr inttoptr (i64 12582929 to ptr), align 1, !tbaa !5
  store volatile i8 0, ptr inttoptr (i64 12582929 to ptr), align 1, !tbaa !5
  store volatile i8 -1, ptr inttoptr (i64 12582929 to ptr), align 1, !tbaa !5
  ret void
}

attributes #0 = { nofree norecurse 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" }

!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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass