; LLVM IR from CactiLab/Sherloc-Cortex-M-CFVD :: Sherloc_runtime/freertos/portable/GCC/ARM_CM23_NTZ/non_secure (port)

; 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"

@ulCriticalNesting = external hidden global i32, section "privileged_data", align 4

; Function Attrs: nounwind uwtable
declare dso_local void @vPortSetupTimerInterrupt() #0 section "privileged_functions"

; Function Attrs: nounwind uwtable
declare hidden void @prvTaskExitError() #0

; Function Attrs: nounwind uwtable
define dso_local i64 @xPortStartScheduler() #0 section "privileged_functions" {
  %1 = load volatile i32, ptr inttoptr (i64 3758157088 to ptr), align 4, !tbaa !5
  %2 = zext i32 %1 to i64
  %3 = or i64 %2, 16711680
  %4 = trunc i64 %3 to i32
  store volatile i32 %4, ptr inttoptr (i64 3758157088 to ptr), align 4, !tbaa !5
  %5 = load volatile i32, ptr inttoptr (i64 3758157088 to ptr), align 4, !tbaa !5
  %6 = zext i32 %5 to i64
  %7 = or i64 %6, 4278190080
  %8 = trunc i64 %7 to i32
  store volatile i32 %8, ptr inttoptr (i64 3758157088 to ptr), align 4, !tbaa !5
  call void @prvSetupMPU()
  call void @vPortSetupTimerInterrupt()
  store volatile i32 0, ptr @ulCriticalNesting, align 4, !tbaa !5
  call void @vStartFirstTask()
  call void @vTaskSwitchContext()
  call void @prvTaskExitError()
  ret i64 0
}

; Function Attrs: nounwind uwtable
declare hidden void @prvSetupMPU() #0 section "privileged_functions"

declare void @vStartFirstTask() #1 section "privileged_functions"

declare void @vTaskSwitchContext() #1 section "privileged_functions"

attributes #0 = { 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 = { "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 = !{!"int", !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"

@ulCriticalNesting = external hidden global i32, section "privileged_data", align 4

; Function Attrs: nounwind uwtable
declare dso_local void @vPortSetupTimerInterrupt() local_unnamed_addr #0 section "privileged_functions"

; Function Attrs: nounwind uwtable
declare hidden void @prvTaskExitError() local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local noundef i64 @xPortStartScheduler() local_unnamed_addr #0 section "privileged_functions" {
  %1 = load volatile i32, ptr inttoptr (i64 3758157088 to ptr), align 32, !tbaa !5
  %2 = or i32 %1, 16711680
  store volatile i32 %2, ptr inttoptr (i64 3758157088 to ptr), align 32, !tbaa !5
  %3 = load volatile i32, ptr inttoptr (i64 3758157088 to ptr), align 32, !tbaa !5
  %4 = or i32 %3, -16777216
  store volatile i32 %4, ptr inttoptr (i64 3758157088 to ptr), align 32, !tbaa !5
  tail call void @prvSetupMPU()
  tail call void @vPortSetupTimerInterrupt()
  store volatile i32 0, ptr @ulCriticalNesting, align 4, !tbaa !5
  tail call void @vStartFirstTask() #2
  tail call void @vTaskSwitchContext() #2
  tail call void @prvTaskExitError()
  ret i64 0
}

; Function Attrs: nounwind uwtable
declare hidden void @prvSetupMPU() local_unnamed_addr #0 section "privileged_functions"

declare void @vStartFirstTask() local_unnamed_addr #1 section "privileged_functions"

declare void @vTaskSwitchContext() local_unnamed_addr #1 section "privileged_functions"

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


; Effective O3 passes: GlobalOptPass,IPSCCPPass,InferAlignmentPass,InstCombinePass,PostOrderFunctionAttrsPass,TailCallElimPass