; LLVM IR from turi-code/SFrame :: cxxtest/cxxtest/ValueTraits.ll (ZN7CxxTest12stringsEqualEPKcS1_)

; 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: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_ZN7CxxTest12stringsEqualEPKcS1_(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i8, align 1
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %6) #2
  br label %8

8:                                                ; preds = %23, %2
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = getelementptr inbounds i8, ptr %9, i32 1
  store ptr %10, ptr %4, align 8, !tbaa !5
  %11 = load i8, ptr %9, align 1, !tbaa !9
  store i8 %11, ptr %6, align 1, !tbaa !9
  %12 = sext i8 %11 to i32
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = getelementptr inbounds i8, ptr %13, i32 1
  store ptr %14, ptr %5, align 8, !tbaa !5
  %15 = load i8, ptr %13, align 1, !tbaa !9
  %16 = sext i8 %15 to i32
  %17 = icmp eq i32 %12, %16
  br i1 %17, label %18, label %24

18:                                               ; preds = %8
  %19 = load i8, ptr %6, align 1, !tbaa !9
  %20 = sext i8 %19 to i32
  %21 = icmp eq i32 %20, 0
  br i1 %21, label %22, label %23

22:                                               ; preds = %18
  store i1 true, ptr %3, align 1
  store i32 1, ptr %7, align 4
  br label %25

23:                                               ; preds = %18
  br label %8, !llvm.loop !10

24:                                               ; preds = %8
  store i1 false, ptr %3, align 1
  store i32 1, ptr %7, align 4
  br label %25

25:                                               ; preds = %24, %22
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #2
  %26 = load i1, ptr %3, align 1
  ret i1 %26
}

; 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 = { 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 #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++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"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 norecurse nosync nounwind willreturn memory(read, inaccessiblemem: none) uwtable
define dso_local noundef zeroext i1 @_ZN7CxxTest12stringsEqualEPKcS1_(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  br label %3

3:                                                ; preds = %3, %2
  %.04 = phi ptr [ %0, %2 ], [ %8, %3 ]
  %.03 = phi ptr [ %1, %2 ], [ %7, %3 ]
  %4 = load i8, ptr %.04, align 1, !tbaa !5
  %5 = load i8, ptr %.03, align 1, !tbaa !5
  %6 = icmp eq i8 %4, %5
  %7 = getelementptr inbounds i8, ptr %.03, i64 1
  %8 = getelementptr inbounds i8, ptr %.04, i64 1
  %9 = icmp ne i8 %4, 0
  %or.cond.not = and i1 %9, %6
  br i1 %or.cond.not, label %3, label %10, !llvm.loop !8

10:                                               ; preds = %3
  ret i1 %6
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(read, inaccessiblemem: none) 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++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass