; RUN: llc -mtriple=x86_64-- -O3 -debug-pass=Structure < %s -o /dev/null 2>&1 | FileCheck %s

; REQUIRES: asserts

; CHECK-LABEL: Pass Arguments:
; CHECK-NEXT: Target Library Information
; CHECK-NEXT: Target Pass Configuration
; CHECK-NEXT: Machine Module Information
; CHECK-NEXT: Target Transform Information
; CHECK-NEXT: Type-Based Alias Analysis
; CHECK-NEXT: Scoped NoAlias Alias Analysis
; CHECK-NEXT: Assumption Cache Tracker
; CHECK-NEXT: Create Garbage Collector Module Metadata
; CHECK-NEXT: Profile summary info
; CHECK-NEXT: Machine Branch Probability Analysis
; CHECK-NEXT:   ModulePass Manager
; CHECK-NEXT:     Pre-ISel Intrinsic Lowering
; CHECK-NEXT:     FunctionPass Manager
; CHECK-NEXT:       Expand Atomic instructions
; CHECK-NEXT:       Dominator Tree Construction
; CHECK-NEXT:       Basic Alias Analysis (stateless AA impl)
; CHECK-NEXT:       Module Verifier
; CHECK-NEXT:       Natural Loop Information
; CHECK-NEXT:       Canonicalize natural loops
; CHECK-NEXT:       Scalar Evolution Analysis
; CHECK-NEXT:       Loop Pass Manager
; CHECK-NEXT:         Induction Variable Users
; CHECK-NEXT:         Loop Strength Reduction
; CHECK-NEXT:       Merge contiguous icmps into a memcmp
; CHECK-NEXT:       Expand memcmp() to load/stores
; CHECK-NEXT:       Lower Garbage Collection Instructions
; CHECK-NEXT:       Shadow Stack GC Lowering
; CHECK-NEXT:       Remove unreachable blocks from the CFG
; CHECK-NEXT:       Dominator Tree Construction
; CHECK-NEXT:       Natural Loop Information
; CHECK-NEXT:       Branch Probability Analysis
; CHECK-NEXT:       Block Frequency Analysis
; CHECK-NEXT:       Constant Hoisting
; CHECK-NEXT:       Partially inline calls to library functions
; CHECK-NEXT:       Instrument function entry/exit with calls to e.g. mcount() (post inlining)
; CHECK-NEXT:       Scalarize Masked Memory Intrinsics
; CHECK-NEXT:       Expand reduction intrinsics
; CHECK-NEXT:       Dominator Tree Construction
; CHECK-NEXT:       Interleaved Access Pass
; CHECK-NEXT:       Expand indirectbr instructions
; CHECK-NEXT:       Dominator Tree Construction
; CHECK-NEXT:       Natural Loop Information
; CHECK-NEXT:       CodeGen Prepare
; CHECK-NEXT:     Rewrite Symbols
; CHECK-NEXT:     FunctionPass Manager
; CHECK-NEXT:       Dominator Tree Construction
; CHECK-NEXT:       Exception handling preparation
; CHECK-NEXT:       Safe Stack instrumentation pass
; CHECK-NEXT:       Insert stack protectors
; CHECK-NEXT:       Module Verifier
; CHECK-NEXT:       Dominator Tree Construction
; CHECK-NEXT:       Basic Alias Analysis (stateless AA impl)
; CHECK-NEXT:       Function Alias Analysis Results
; CHECK-NEXT:       Natural Loop Information
; CHECK-NEXT:       Branch Probability Analysis
; CHECK-NEXT:       X86 DAG->DAG Instruction Selection
; CHECK-NEXT:       MachineDominator Tree Construction
; CHECK-NEXT:       Local Dynamic TLS Access Clean-up
; CHECK-NEXT:       X86 PIC Global Base Reg Initialization
; CHECK-NEXT:       Expand ISel Pseudo-instructions
; CHECK-NEXT:       X86 Domain Reassignment Pass
; CHECK-NEXT:       Early Tail Duplication
; CHECK-NEXT:       Optimize machine instruction PHIs
; CHECK-NEXT:       Slot index numbering
; CHECK-NEXT:       Merge disjoint stack slots
; CHECK-NEXT:       Local Stack Slot Allocation
; CHECK-NEXT:       Remove dead machine instructions
; CHECK-NEXT:       MachineDominator Tree Construction
; CHECK-NEXT:       Machine Natural Loop Construction
; CHECK-NEXT:       Machine Trace Metrics
; CHECK-NEXT:       Early If-Conversion
; CHECK-NEXT:       Machine InstCombiner
; CHECK-NEXT:       X86 cmov Conversion
; CHECK-NEXT:       MachineDominator Tree Construction
; CHECK-NEXT:       Machine Natural Loop Construction
; CHECK-NEXT:       Early Machine Loop Invariant Code Motion
; CHECK-NEXT:       Machine Common Subexpression Elimination
; CHECK-NEXT:       MachinePostDominator Tree Construction
; CHECK-NEXT:       Machine Block Frequency Analysis
; CHECK-NEXT:       Machine code sinking
; CHECK-NEXT:       Peephole Optimizations
; CHECK-NEXT:       Remove dead machine instructions
; CHECK-NEXT:       Live Range Shrink
; CHECK-NEXT:       X86 Fixup SetCC
; CHECK-NEXT:       X86 LEA Optimize
; CHECK-NEXT:       X86 Optimize Call Frame
; CHECK-NEXT:       X86 Avoid Store Forwarding Block
; CHECK-NEXT:       MachineDominator Tree Construction
; CHECK-NEXT:       X86 EFLAGS copy lowering
; CHECK-NEXT:       X86 WinAlloca Expander
; CHECK-NEXT:       Detect Dead Lanes
; CHECK-NEXT:       Process Implicit Definitions
; CHECK-NEXT:       Remove unreachable machine basic blocks
; CHECK-NEXT:       Live Variable Analysis
; CHECK-NEXT:       MachineDominator Tree Construction
; CHECK-NEXT:       Machine Natural Loop Construction
; CHECK-NEXT:       Eliminate PHI nodes for register allocation
; CHECK-NEXT:       Two-Address instruction pass
; CHECK-NEXT:       Slot index numbering
; CHECK-NEXT:       Live Interval Analysis
; CHECK-NEXT:       Simple Register Coalescing
; CHECK-NEXT:       Rename Disconnected Subregister Components
; CHECK-NEXT:       Machine Instruction Scheduler
; CHECK-NEXT:       Machine Block Frequency Analysis
; CHECK-NEXT:       Debug Variable Analysis
; CHECK-NEXT:       Live Stack Slot Analysis
; CHECK-NEXT:       Virtual Register Map
; CHECK-NEXT:       Live Register Matrix
; CHECK-NEXT:       Bundle Machine CFG Edges
; CHECK-NEXT:       Spill Code Placement Analysis
; CHECK-NEXT:       Lazy Machine Block Frequency Analysis
; CHECK-NEXT:       Machine Optimization Remark Emitter
; CHECK-NEXT:       Greedy Register Allocator
; CHECK-NEXT:       Virtual Register Rewriter
; CHECK-NEXT:       Stack Slot Coloring
; CHECK-NEXT:       Machine Copy Propagation Pass
; CHECK-NEXT:       Machine Loop Invariant Code Motion
; CHECK-NEXT:       Bundle Machine CFG Edges
; CHECK-NEXT:       X86 FP Stackifier
; CHECK-NEXT:       PostRA Machine Sink
; CHECK-NEXT:       Machine Block Frequency Analysis
; CHECK-NEXT:       MachinePostDominator Tree Construction
; CHECK-NEXT:       Lazy Machine Block Frequency Analysis
; CHECK-NEXT:       Machine Optimization Remark Emitter
; CHECK-NEXT:       Shrink Wrapping analysis
; CHECK-NEXT:       Prologue/Epilogue Insertion & Frame Finalization
; CHECK-NEXT:       Control Flow Optimizer
; CHECK-NEXT:       Tail Duplication
; CHECK-NEXT:       Machine Copy Propagation Pass
; CHECK-NEXT:       Post-RA pseudo instruction expansion pass
; CHECK-NEXT:       X86 pseudo instruction expansion pass
; CHECK-NEXT:       MachineDominator Tree Construction
; CHECK-NEXT:       Machine Natural Loop Construction
; CHECK-NEXT:       Post RA top-down list latency scheduler
; CHECK-NEXT:       Analyze Machine Code For Garbage Collection
; CHECK-NEXT:       Machine Block Frequency Analysis
; CHECK-NEXT:       MachinePostDominator Tree Construction
; CHECK-NEXT:       Branch Probability Basic Block Placement
; CHECK-NEXT:       ReachingDefAnalysis
; CHECK-NEXT:       X86 Execution Dependency Fix
; CHECK-NEXT:       BreakFalseDeps
; CHECK-NEXT:       Shadow Call Stack
; CHECK-NEXT:       X86 Indirect Branch Tracking
; CHECK-NEXT:       X86 vzeroupper inserter
; CHECK-NEXT:       MachineDominator Tree Construction
; CHECK-NEXT:       Machine Natural Loop Construction
; CHECK-NEXT:       X86 Byte/Word Instruction Fixup
; CHECK-NEXT:       X86 Atom pad short functions
; CHECK-NEXT:       X86 LEA Fixup
; CHECK-NEXT:       Compressing EVEX instrs to VEX encoding when possible
; CHECK-NEXT:       Contiguously Lay Out Funclets
; CHECK-NEXT:       StackMap Liveness Analysis
; CHECK-NEXT:       Live DEBUG_VALUE analysis
; CHECK-NEXT:       Insert fentry calls
; CHECK-NEXT:       Insert XRay ops
; CHECK-NEXT:       Implement the 'patchable-function' attribute
; CHECK-NEXT:       X86 Retpoline Thunks
; CHECK-NEXT:       Check CFA info and insert CFI instructions if needed
; CHECK-NEXT:       Lazy Machine Block Frequency Analysis
; CHECK-NEXT:       Machine Optimization Remark Emitter
; CHECK-NEXT:       X86 Assembly Printer
; CHECK-NEXT:       Free MachineFunction

define void @f() {
  ret void
}