; LLVM IR from facebookresearch/habitat-sim :: src/deps/basis-universal/encoder/basisu_enc.ll (ZN6basisu14interval_timerC2Ev)

; 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.basisu::interval_timer" = type <{ i64, i64, i8, i8, [6 x i8] }>

@_ZN6basisu14interval_timer12g_timer_freqE = external dso_local global double, align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN6basisu14interval_timerC2Ev(ptr noundef nonnull align 8 dereferenceable(18) %0) unnamed_addr #0 align 2 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8
  %4 = getelementptr inbounds %"class.basisu::interval_timer", ptr %3, i32 0, i32 0
  store i64 0, ptr %4, align 8, !tbaa !9
  %5 = getelementptr inbounds %"class.basisu::interval_timer", ptr %3, i32 0, i32 1
  store i64 0, ptr %5, align 8, !tbaa !13
  %6 = getelementptr inbounds %"class.basisu::interval_timer", ptr %3, i32 0, i32 2
  store i8 0, ptr %6, align 8, !tbaa !14
  %7 = getelementptr inbounds %"class.basisu::interval_timer", ptr %3, i32 0, i32 3
  store i8 0, ptr %7, align 1, !tbaa !15
  %8 = load double, ptr @_ZN6basisu14interval_timer12g_timer_freqE, align 8, !tbaa !16
  %9 = fcmp une double %8, 0.000000e+00
  br i1 %9, label %11, label %10

10:                                               ; preds = %1
  call void @_ZN6basisu14interval_timer4initEv()
  br label %11

11:                                               ; preds = %10, %1
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN6basisu14interval_timer4initEv() #0 align 2

attributes #0 = { 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" }

!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, !11, i64 0}
!10 = !{!"_ZTSN6basisu14interval_timerE", !11, i64 0, !11, i64 8, !12, i64 16, !12, i64 17}
!11 = !{!"long", !7, i64 0}
!12 = !{!"bool", !7, i64 0}
!13 = !{!10, !11, i64 8}
!14 = !{!10, !12, i64 16}
!15 = !{!10, !12, i64 17}
!16 = !{!17, !17, i64 0}
!17 = !{!"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"

@_ZN6basisu14interval_timer12g_timer_freqE = external dso_local local_unnamed_addr global double, align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN6basisu14interval_timerC2Ev(ptr nocapture noundef nonnull writeonly align 8 dereferenceable(18) %0) unnamed_addr #0 align 2 {
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(18) %0, i8 0, i64 18, i1 false)
  %2 = load double, ptr @_ZN6basisu14interval_timer12g_timer_freqE, align 8, !tbaa !5
  %3 = fcmp une double %2, 0.000000e+00
  br i1 %3, label %5, label %4

4:                                                ; preds = %1
  tail call void @_ZN6basisu14interval_timer4initEv()
  br label %5

5:                                                ; preds = %4, %1
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN6basisu14interval_timer4initEv() local_unnamed_addr #0 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

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

!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,InstCombinePass,MemCpyOptPass,PostOrderFunctionAttrsPass,SROAPass,TailCallElimPass