; LLVM IR from bohanwang/libpgo :: src/core/volumetricMesh (volumetricMeshParser)

; 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 willreturn memory(read)
declare i64 @strlen(ptr noundef) #0

; 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

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN3pgo16VolumetricMeshes20VolumetricMeshParser9upperCaseEPc(ptr noundef %0) #2 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i8, align 1
  %4 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %3) #3
  store i8 -32, ptr %3, align 1, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 0, ptr %4, align 4, !tbaa !10
  br label %5

5:                                                ; preds = %40, %1
  %6 = load i32, ptr %4, align 4, !tbaa !10
  %7 = zext i32 %6 to i64
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = call i64 @strlen(ptr noundef %8) #4
  %10 = icmp ult i64 %7, %9
  br i1 %10, label %12, label %11

11:                                               ; preds = %5
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  br label %43

12:                                               ; preds = %5
  %13 = load ptr, ptr %2, align 8, !tbaa !5
  %14 = load i32, ptr %4, align 4, !tbaa !10
  %15 = zext i32 %14 to i64
  %16 = getelementptr inbounds i8, ptr %13, i64 %15
  %17 = load i8, ptr %16, align 1, !tbaa !9
  %18 = sext i8 %17 to i32
  %19 = icmp sge i32 %18, 97
  br i1 %19, label %20, label %39

20:                                               ; preds = %12
  %21 = load ptr, ptr %2, align 8, !tbaa !5
  %22 = load i32, ptr %4, align 4, !tbaa !10
  %23 = zext i32 %22 to i64
  %24 = getelementptr inbounds i8, ptr %21, i64 %23
  %25 = load i8, ptr %24, align 1, !tbaa !9
  %26 = sext i8 %25 to i32
  %27 = icmp sle i32 %26, 122
  br i1 %27, label %28, label %39

28:                                               ; preds = %20
  %29 = load i8, ptr %3, align 1, !tbaa !9
  %30 = sext i8 %29 to i32
  %31 = load ptr, ptr %2, align 8, !tbaa !5
  %32 = load i32, ptr %4, align 4, !tbaa !10
  %33 = zext i32 %32 to i64
  %34 = getelementptr inbounds i8, ptr %31, i64 %33
  %35 = load i8, ptr %34, align 1, !tbaa !9
  %36 = sext i8 %35 to i32
  %37 = add nsw i32 %36, %30
  %38 = trunc i32 %37 to i8
  store i8 %38, ptr %34, align 1, !tbaa !9
  br label %39

39:                                               ; preds = %28, %20, %12
  br label %40

40:                                               ; preds = %39
  %41 = load i32, ptr %4, align 4, !tbaa !10
  %42 = add i32 %41, 1
  store i32 %42, ptr %4, align 4, !tbaa !10
  br label %5, !llvm.loop !12

43:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 1, ptr %3) #3
  ret void
}

attributes #0 = { nounwind willreturn memory(read) "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 = { 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 = { nounwind }
attributes #4 = { nounwind willreturn memory(read) }

!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 = !{!7, !7, i64 0}
!10 = !{!11, !11, i64 0}
!11 = !{!"int", !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: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nofree nounwind memory(argmem: readwrite) uwtable
define dso_local void @_ZN3pgo16VolumetricMeshes20VolumetricMeshParser9upperCaseEPc(ptr nocapture noundef %0) local_unnamed_addr #1 align 2 {
  %char0 = load i8, ptr %0, align 1
  %.not = icmp eq i8 %char0, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %7, %1
  ret void

.lr.ph:                                           ; preds = %1, %7
  %2 = phi i64 [ %9, %7 ], [ 0, %1 ]
  %.011 = phi i32 [ %8, %7 ], [ 0, %1 ]
  %3 = getelementptr inbounds i8, ptr %0, i64 %2
  %4 = load i8, ptr %3, align 1, !tbaa !5
  %5 = add i8 %4, -97
  %or.cond = icmp ult i8 %5, 26
  br i1 %or.cond, label %6, label %7

6:                                                ; preds = %.lr.ph
  %narrow = add nsw i8 %4, -32
  store i8 %narrow, ptr %3, align 1, !tbaa !5
  br label %7

7:                                                ; preds = %.lr.ph, %6
  %8 = add i32 %.011, 1
  %9 = zext i32 %8 to i64
  %10 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) %0) #2
  %11 = icmp ugt i64 %10, %9
  br i1 %11, label %.lr.ph, label %._crit_edge, !llvm.loop !8
}

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

!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++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass