; LLVM IR from humz2k/sugaryc :: ext/bdwgc/extra (gc)

; 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: 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 willreturn memory(none)
declare i64 @llvm.expect.i64(i64, i64) #1

; Function Attrs: nounwind allocsize(0) uwtable
declare dso_local noalias ptr @GC_malloc(i64 noundef) #2

; Function Attrs: nounwind uwtable
declare hidden ptr @GC_malloc_kind_aligned_global(i64 noundef, i32 noundef, i64 noundef) #3

; Function Attrs: nounwind allocsize(1) uwtable
define dso_local noalias ptr @GC_memalign(i64 noundef %0, i64 noundef %1) #4 {
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  store i64 %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #5
  %8 = load i64, ptr %4, align 8, !tbaa !5
  %9 = sub i64 %8, 1
  store i64 %9, ptr %6, align 8, !tbaa !5
  %10 = load i64, ptr %4, align 8, !tbaa !5
  %11 = icmp eq i64 0, %10
  br i1 %11, label %17, label %12

12:                                               ; preds = %2
  %13 = load i64, ptr %4, align 8, !tbaa !5
  %14 = load i64, ptr %6, align 8, !tbaa !5
  %15 = and i64 %13, %14
  %16 = icmp ne i64 %15, 0
  br label %17

17:                                               ; preds = %12, %2
  %18 = phi i1 [ true, %2 ], [ %16, %12 ]
  %19 = zext i1 %18 to i32
  %20 = sext i32 %19 to i64
  %21 = call i64 @llvm.expect.i64(i64 %20, i64 0)
  %22 = icmp ne i64 %21, 0
  br i1 %22, label %23, label %24

23:                                               ; preds = %17
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %34

24:                                               ; preds = %17
  %25 = load i64, ptr %4, align 8, !tbaa !5
  %26 = icmp ule i64 %25, 16
  br i1 %26, label %27, label %30

27:                                               ; preds = %24
  %28 = load i64, ptr %5, align 8, !tbaa !5
  %29 = call noalias ptr @GC_malloc(i64 noundef %28) #6
  store ptr %29, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %34

30:                                               ; preds = %24
  %31 = load i64, ptr %5, align 8, !tbaa !5
  %32 = load i64, ptr %6, align 8, !tbaa !5
  %33 = call ptr @GC_malloc_kind_aligned_global(i64 noundef %31, i32 noundef 1, i64 noundef %32)
  store ptr %33, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %34

34:                                               ; preds = %30, %27, %23
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  %35 = load ptr, ptr %3, align 8
  ret ptr %35
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(none) }
attributes #2 = { nounwind allocsize(0) 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 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 = { nounwind allocsize(1) 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 #5 = { nounwind }
attributes #6 = { allocsize(0) }

!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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/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"

; Function Attrs: nounwind allocsize(0) uwtable
declare dso_local noalias ptr @GC_malloc(i64 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare hidden ptr @GC_malloc_kind_aligned_global(i64 noundef, i32 noundef, i64 noundef) local_unnamed_addr #1

; Function Attrs: nounwind allocsize(1) uwtable
define dso_local noalias ptr @GC_memalign(i64 noundef %0, i64 noundef %1) local_unnamed_addr #2 {
  %3 = add i64 %0, -1
  %4 = tail call range(i64 0, 65) i64 @llvm.ctpop.i64(i64 %0)
  %.not = icmp eq i64 %4, 1
  br i1 %.not, label %5, label %11, !prof !5

5:                                                ; preds = %2
  %6 = icmp ult i64 %0, 17
  br i1 %6, label %7, label %9

7:                                                ; preds = %5
  %8 = tail call noalias ptr @GC_malloc(i64 noundef %1) #4
  br label %11

9:                                                ; preds = %5
  %10 = tail call ptr @GC_malloc_kind_aligned_global(i64 noundef %1, i32 noundef 1, i64 noundef %3)
  br label %11

11:                                               ; preds = %2, %9, %7
  %.0 = phi ptr [ %8, %7 ], [ %10, %9 ], [ null, %2 ]
  ret ptr %.0
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.ctpop.i64(i64) #3

attributes #0 = { nounwind allocsize(0) 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 = { 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 = { nounwind allocsize(1) 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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #4 = { allocsize(0) }

!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 = !{!"branch_weights", !"expected", i32 2000, i32 1}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,LowerExpectIntrinsicPass,SROAPass,SimplifyCFGPass,TailCallElimPass