; LLVM IR from JonathanSalwan/Triton :: src/stubs/triton-stubs.ll_ (lshrdi3)

; 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"

%union.arith64_word = type { i64 }
%struct.anon = type { i32, i32 }

; 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: nounwind uwtable
define dso_local i64 @__lshrdi3(i64 noundef %0, i32 noundef %1) #1 {
  %3 = alloca i64, align 8
  %4 = alloca i32, align 4
  %5 = alloca %union.arith64_word, align 8
  store i64 %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  %6 = load i64, ptr %3, align 8, !tbaa !5
  store i64 %6, ptr %5, align 8, !tbaa !11
  %7 = load i32, ptr %4, align 4, !tbaa !9
  %8 = and i32 %7, 63
  store i32 %8, ptr %4, align 4, !tbaa !9
  %9 = load i32, ptr %4, align 4, !tbaa !9
  %10 = icmp sge i32 %9, 32
  br i1 %10, label %11, label %19

11:                                               ; preds = %2
  %12 = getelementptr inbounds %struct.anon, ptr %5, i32 0, i32 1
  %13 = load i32, ptr %12, align 4, !tbaa !11
  %14 = load i32, ptr %4, align 4, !tbaa !9
  %15 = sub nsw i32 %14, 32
  %16 = lshr i32 %13, %15
  %17 = getelementptr inbounds %struct.anon, ptr %5, i32 0, i32 0
  store i32 %16, ptr %17, align 8, !tbaa !11
  %18 = getelementptr inbounds %struct.anon, ptr %5, i32 0, i32 1
  store i32 0, ptr %18, align 4, !tbaa !11
  br label %39

19:                                               ; preds = %2
  %20 = load i32, ptr %4, align 4, !tbaa !9
  %21 = icmp ne i32 %20, 0
  br i1 %21, label %22, label %38

22:                                               ; preds = %19
  %23 = getelementptr inbounds %struct.anon, ptr %5, i32 0, i32 1
  %24 = load i32, ptr %23, align 4, !tbaa !11
  %25 = load i32, ptr %4, align 4, !tbaa !9
  %26 = sub nsw i32 32, %25
  %27 = shl i32 %24, %26
  %28 = getelementptr inbounds %struct.anon, ptr %5, i32 0, i32 0
  %29 = load i32, ptr %28, align 8, !tbaa !11
  %30 = load i32, ptr %4, align 4, !tbaa !9
  %31 = lshr i32 %29, %30
  %32 = or i32 %27, %31
  %33 = getelementptr inbounds %struct.anon, ptr %5, i32 0, i32 0
  store i32 %32, ptr %33, align 8, !tbaa !11
  %34 = load i32, ptr %4, align 4, !tbaa !9
  %35 = getelementptr inbounds %struct.anon, ptr %5, i32 0, i32 1
  %36 = load i32, ptr %35, align 4, !tbaa !11
  %37 = lshr i32 %36, %34
  store i32 %37, ptr %35, align 4, !tbaa !11
  br label %38

38:                                               ; preds = %22, %19
  br label %39

39:                                               ; preds = %38, %11
  %40 = load i64, ptr %5, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret i64 %40
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 }

!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 long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!7, !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"

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local i64 @__lshrdi3(i64 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %.sroa.0.0.extract.trunc = trunc i64 %0 to i32
  %.sroa.7.0.extract.shift = lshr i64 %0, 32
  %.sroa.7.0.extract.trunc = trunc nuw i64 %.sroa.7.0.extract.shift to i32
  %3 = and i32 %1, 63
  %4 = icmp ugt i32 %3, 31
  br i1 %4, label %5, label %8

5:                                                ; preds = %2
  %6 = add nsw i32 %3, -32
  %7 = lshr i32 %.sroa.7.0.extract.trunc, %6
  br label %12

8:                                                ; preds = %2
  %.not = icmp eq i32 %3, 0
  br i1 %.not, label %12, label %9

9:                                                ; preds = %8
  %10 = tail call i32 @llvm.fshr.i32(i32 %.sroa.7.0.extract.trunc, i32 %.sroa.0.0.extract.trunc, i32 %1)
  %11 = lshr i32 %.sroa.7.0.extract.trunc, %3
  br label %12

12:                                               ; preds = %8, %9, %5
  %.sroa.7.0 = phi i32 [ 0, %5 ], [ %11, %9 ], [ %.sroa.7.0.extract.trunc, %8 ]
  %.sroa.0.0 = phi i32 [ %7, %5 ], [ %10, %9 ], [ %.sroa.0.0.extract.trunc, %8 ]
  %.sroa.7.0.insert.ext = zext i32 %.sroa.7.0 to i64
  %.sroa.7.0.insert.shift = shl nuw i64 %.sroa.7.0.insert.ext, 32
  %.sroa.0.0.insert.ext = zext i32 %.sroa.0.0 to i64
  %.sroa.0.0.insert.insert = or disjoint i64 %.sroa.7.0.insert.shift, %.sroa.0.0.insert.ext
  ret i64 %.sroa.0.0.insert.insert
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.fshr.i32(i32, i32, i32) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(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" }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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)"}


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