TheRock/compiler/amd-llvm/llvm/test/CodeGen/MIR/X86/frame-info-save-restore-points-with-regs-parse.mir

# RUN: llc -run-pass none -o - %s | FileCheck %s 

--- |
  target triple = "x86_64-unknown-linux-gnu"

  define ptr @foo(ptr %ptr, i64 %p2, i64 %p3, i64 %p4, i64 %p5, i64 %p6) {
  entry:
    %tobool.not = icmp eq ptr %ptr, null
    br i1 %tobool.not, label %if.then, label %if.end
  
  if.then:                                          ; preds = %entry
    %call = tail call ptr @bar(ptr %ptr, i64 %p2, i64 %p3, i64 %p4, i64 %p5, i64 %p6)
    br label %if.end
  
  if.end:                                           ; preds = %if.then, %entry
    %ptr.addr.0 = phi ptr [ %call, %if.then ], [ %ptr, %entry ]
    %incdec.ptr = getelementptr inbounds i8, ptr %ptr.addr.0, i64 1
    %call2 = tail call ptr @qux(ptr %incdec.ptr, i64 %p2, i64 %p3, i64 %p4, i64 %p5, i64 %p6)
    ret ptr %call2
  }
  
  declare ptr @bar(ptr, i64, i64, i64, i64, i64)
  
  declare ptr @qux(ptr, i64, i64, i64, i64, i64)
...
---
name:            foo
alignment:       16
exposesReturnsTwice: false
legalized:       false
regBankSelected: false
selected:        false
failedISel:      false
tracksRegLiveness: true
hasWinCFI:       false
noPhis:          true
isSSA:           false
noVRegs:         true
hasFakeUses:     false
callsEHReturn:   false
callsUnwindInit: false
hasEHContTarget: false
hasEHScopes:     false
hasEHFunclets:   false
isOutlined:      false
debugInstrRef:   true
failsVerification: false
tracksDebugUserValues: true
registers:       []
liveins:
  - { reg: '$rdi', virtual-reg: '' }
  - { reg: '$rsi', virtual-reg: '' }
  - { reg: '$rdx', virtual-reg: '' }
  - { reg: '$rcx', virtual-reg: '' }
  - { reg: '$r8', virtual-reg: '' }
  - { reg: '$r9', virtual-reg: '' }
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       0
  offsetAdjustment: 0
  maxAlignment:    1
  adjustsStack:    true
  hasCalls:        true
  stackProtector:  ''
  functionContext: ''
  maxCallFrameSize: 4294967295
  cvBytesOfCalleeSavedRegisters: 0
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
  hasTailCall:     true
  isCalleeSavedInfoValid: false
  localFrameSize:  0
# CHECK:       savePoint:
# CHECK-NEXT:   - point:           '%bb.2'
# CHECK-NEXT:     registers:
# CHECK-NEXT:       - '$r12'
# CHECK-NEXT:       - '$r13'
# CHECK-NEXT:       - '$r14'
# CHECK-NEXT:       - '$r15'
# CHECK-NEXT:       - '$rbx'
# CHECK:      restorePoint:
# CHECK-NEXT:   - point:           '%bb.2'
# CHECK-NEXT:     registers:
# CHECK-NEXT:       - '$r12'
# CHECK-NEXT:       - '$r13'
# CHECK-NEXT:       - '$r14'
# CHECK-NEXT:       - '$r15'
# CHECK-NEXT:       - '$rbx'
  savePoint:
    - point:           '%bb.1'
      registers:
        - '$rbx'
        - '$r12'
        - '$r13'
        - '$r14'
        - '$r15'
  restorePoint:
    - point:           '%bb.1'
      registers:
        - '$rbx'
        - '$r12'
        - '$r13'
        - '$r14'
        - '$r15'
fixedStack:      []
stack:           []
entry_values:    []
callSites:       []
debugValueSubstitutions: []
constants:       []
machineFunctionInfo:
  amxProgModel:    None
body:             |
  bb.0.entry:
    successors: %bb.1(0x30000000), %bb.3(0x50000000)
    liveins: $rcx, $rdi, $rdx, $rsi, $r8, $r9
  
    TEST64rr renamable $rdi, renamable $rdi, implicit-def $eflags
    JCC_1 %bb.1, 4, implicit killed $eflags
  
  bb.3:
    successors: %bb.2(0x80000000)
    liveins: $rcx, $rdi, $rdx, $rsi, $r8, $r9
  
    JMP_1 %bb.2
  
  bb.1.if.then:
    successors: %bb.2(0x80000000)
    liveins: $rcx, $rdi, $rdx, $rsi, $r8, $r9
  
    ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
    renamable $rbx = COPY renamable $rsi
    renamable $r14 = COPY renamable $rdx
    renamable $r15 = COPY renamable $rcx
    renamable $r12 = COPY renamable $r8
    renamable $r13 = COPY renamable $r9
    CALL64pcrel32 target-flags(x86-plt) @bar, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit $rsi, implicit $rdx, implicit $rcx, implicit $r8, implicit $r9, implicit-def $rsp, implicit-def $ssp, implicit-def $rax
    renamable $rsi = COPY killed renamable $rbx
    renamable $rdx = COPY killed renamable $r14
    renamable $rcx = COPY killed renamable $r15
    renamable $r8 = COPY killed renamable $r12
    renamable $r9 = COPY killed renamable $r13
    ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
    renamable $rdi = COPY killed $rax
  
  bb.2.if.end:
    liveins: $rcx, $rdi, $rdx, $rsi, $r8, $r9
  
    renamable $rdi = nuw INC64r killed renamable $rdi, implicit-def dead $eflags
    TCRETURNdi64 target-flags(x86-plt) @qux, 0, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit $rsi, implicit $rdx, implicit $rcx, implicit $r8, implicit $r9
...