; LLVM IR from BrunoLevy/learn-fpga :: FemtoRV/TUTORIALS/FROM_BLINKER_TO_RISCV/FIRMWARE/COREMARK (core_portme)

; 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"

@.str.3 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [23 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [20 x i8], align 1

declare i64 @rdcycle(...) #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: nounwind uwtable
declare dso_local void @printk(i64 noundef) #2

declare i32 @printf(ptr noundef, ...) #0

; Function Attrs: nounwind uwtable
define dso_local void @print_coremarks(i64 noundef %0) #2 {
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  store i64 %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  store i64 10, ptr %3, align 8, !tbaa !5
  %8 = load i64, ptr %2, align 8, !tbaa !5
  %9 = trunc i64 %8 to i32
  %10 = call i32 (ptr, ...) @printf(ptr noundef @.str.9, i32 noundef %9)
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %11 = load i64, ptr %2, align 8, !tbaa !5
  %12 = udiv i64 %11, 10000
  store i64 %12, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %13 = load i64, ptr %4, align 8, !tbaa !5
  %14 = udiv i64 300000000, %13
  store i64 %14, ptr %5, align 8, !tbaa !5
  %15 = call i32 (ptr, ...) @printf(ptr noundef @.str.10)
  %16 = load i64, ptr %5, align 8, !tbaa !5
  %17 = udiv i64 %16, 10
  call void @printk(i64 noundef %17)
  %18 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %19 = call i64 (...) @rdcycle()
  %20 = mul i64 %19, 1000
  store i64 %20, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %21 = call i64 (...) @rdinstret()
  store i64 %21, ptr %7, align 8, !tbaa !5
  %22 = call i32 (ptr, ...) @printf(ptr noundef @.str.11)
  %23 = load i64, ptr %6, align 8, !tbaa !5
  %24 = load i64, ptr %7, align 8, !tbaa !5
  %25 = udiv i64 %23, %24
  call void @printk(i64 noundef %25)
  %26 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  ret void
}

declare i64 @rdinstret(...) #0

attributes #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 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 }

!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", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; 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"

@.str.3 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [23 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [20 x i8], align 1

declare i64 @rdcycle(...) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local void @printk(i64 noundef) local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local void @print_coremarks(i64 noundef %0) local_unnamed_addr #1 {
  %2 = trunc i64 %0 to i32
  %3 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.9, i32 noundef %2)
  %4 = udiv i64 %0, 10000
  %5 = udiv i64 300000000, %4
  %6 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.10)
  %.lhs.trunc = trunc nuw nsw i64 %5 to i32
  %7 = udiv i32 %.lhs.trunc, 10
  %.zext = zext nneg i32 %7 to i64
  tail call void @printk(i64 noundef %.zext)
  %8 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  %9 = tail call i64 (...) @rdcycle() #3
  %10 = mul i64 %9, 1000
  %11 = tail call i64 (...) @rdinstret() #3
  %12 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.11)
  %13 = udiv i64 %10, %11
  tail call void @printk(i64 noundef %13)
  %14 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  ret void
}

declare i64 @rdinstret(...) local_unnamed_addr #0

attributes #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 = { 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 = { nofree nounwind "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 }

!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: CorrelatedValuePropagationPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,TailCallElimPass