; LLVM IR from CRAFT-THU/BSim :: test/gpu/mnist.ll (Z9getMaxLocPfi)

; 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: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z9getMaxLocPfi(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca float, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = getelementptr inbounds float, ptr %8, i64 0
  %10 = load float, ptr %9, align 4, !tbaa !11
  store float %10, ptr %5, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 1, ptr %7, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %32, %2
  %12 = load i32, ptr %7, align 4, !tbaa !9
  %13 = load i32, ptr %4, align 4, !tbaa !9
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %35

16:                                               ; preds = %11
  %17 = load float, ptr %5, align 4, !tbaa !11
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = load i32, ptr %7, align 4, !tbaa !9
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds float, ptr %18, i64 %20
  %22 = load float, ptr %21, align 4, !tbaa !11
  %23 = fcmp olt float %17, %22
  br i1 %23, label %24, label %31

24:                                               ; preds = %16
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  %26 = load i32, ptr %7, align 4, !tbaa !9
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds float, ptr %25, i64 %27
  %29 = load float, ptr %28, align 4, !tbaa !11
  store float %29, ptr %5, align 4, !tbaa !11
  %30 = load i32, ptr %7, align 4, !tbaa !9
  store i32 %30, ptr %6, align 4, !tbaa !9
  br label %31

31:                                               ; preds = %24, %16
  br label %32

32:                                               ; preds = %31
  %33 = load i32, ptr %7, align 4, !tbaa !9
  %34 = add nsw i32 %33, 1
  store i32 %34, ptr %7, align 4, !tbaa !9
  br label %11, !llvm.loop !13

35:                                               ; preds = %15
  %36 = load i32, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret i32 %36
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"float", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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(argmem: read) uwtable
define dso_local noundef i32 @_Z9getMaxLocPfi(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %1, 1
  br i1 %3, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %2
  %4 = load float, ptr %0, align 4, !tbaa !5
  %wide.trip.count = zext nneg i32 %1 to i64
  %5 = add nsw i64 %wide.trip.count, -1
  %xtraiter = and i64 %5, 1
  %6 = icmp eq i32 %1, 2
  br i1 %6, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i64 %5, -2
  br label %.lr.ph

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %.1.lcssa.ph = phi i32 [ poison, %.lr.ph.preheader ], [ %.1.1, %.lr.ph ]
  %indvars.iv.unr = phi i64 [ 1, %.lr.ph.preheader ], [ %indvars.iv.next.1, %.lr.ph ]
  %.01015.unr = phi i32 [ 0, %.lr.ph.preheader ], [ %.1.1, %.lr.ph ]
  %.01114.unr = phi float [ %4, %.lr.ph.preheader ], [ %.112.1, %.lr.ph ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %._crit_edge.loopexit.unr-lcssa
  %7 = getelementptr inbounds float, ptr %0, i64 %indvars.iv.unr
  %8 = load float, ptr %7, align 4, !tbaa !5
  %9 = fcmp olt float %.01114.unr, %8
  %10 = trunc nuw nsw i64 %indvars.iv.unr to i32
  %.1.epil = select i1 %9, i32 %10, i32 %.01015.unr
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph.epil, %._crit_edge.loopexit.unr-lcssa, %2
  %.010.lcssa = phi i32 [ 0, %2 ], [ %.1.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %.1.epil, %.lr.ph.epil ]
  ret i32 %.010.lcssa

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %indvars.iv = phi i64 [ 1, %.lr.ph.preheader.new ], [ %indvars.iv.next.1, %.lr.ph ]
  %.01015 = phi i32 [ 0, %.lr.ph.preheader.new ], [ %.1.1, %.lr.ph ]
  %.01114 = phi float [ %4, %.lr.ph.preheader.new ], [ %.112.1, %.lr.ph ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.1, %.lr.ph ]
  %11 = getelementptr inbounds float, ptr %0, i64 %indvars.iv
  %12 = load float, ptr %11, align 4, !tbaa !5
  %13 = fcmp olt float %.01114, %12
  %.112 = select i1 %13, float %12, float %.01114
  %14 = trunc nuw nsw i64 %indvars.iv to i32
  %.1 = select i1 %13, i32 %14, i32 %.01015
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %15 = getelementptr inbounds float, ptr %0, i64 %indvars.iv.next
  %16 = load float, ptr %15, align 4, !tbaa !5
  %17 = fcmp olt float %.112, %16
  %.112.1 = select i1 %17, float %16, float %.112
  %18 = trunc nuw nsw i64 %indvars.iv.next to i32
  %.1.1 = select i1 %17, i32 %18, i32 %.1
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %niter.next.1 = add i64 %niter, 2
  %niter.ncmp.1 = icmp eq i64 %niter.next.1, %unroll_iter
  br i1 %niter.ncmp.1, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !9
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) 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 = !{!"float", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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