src/llvm-project/llvm/test/CodeGen/MIR/X86/inline-asm-rm-exhaustion.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 3
# RUN: llc -start-after=finalize-isel -regalloc=greedy -stop-after=greedy \
# RUN:   -verify-machineinstrs -verify-regalloc %s -o - | FileCheck %s
--- |
  target datalayout = "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-i128:128-f64:32:64-f80:32-n8:16:32-S128"
  target triple = "i386-unknown-linux-gnu"

  define void @input(i32 %0) #0 {
    call void asm "# $0", "rm,~{ax},~{cx},~{dx},~{si},~{di},~{bx},~{bp}"(i32 %0)
    ret void
  }

  define i32 @output() #0 {
    %1 = alloca i32, align 4
    call void asm "# $0", "=*rm,~{ax},~{cx},~{dx},~{si},~{di},~{bx},~{bp}"(ptr nonnull elementtype(i32) %1)
    %2 = load i32, ptr %1, align 4
    ret i32 %2
  }

  define i32 @inout(i32 %0) #0 {
    %2 = alloca i32, align 4
    store i32 %0, ptr %2, align 4
    call void asm "# $0 $1", "=*rm,0,~{ax},~{cx},~{dx},~{si},~{di},~{bx},~{bp}"(ptr nonnull elementtype(i32) %2, i32 %0)
    %3 = load i32, ptr %2, align 4
    ret i32 %3
  }

  attributes #0 = { nounwind }

...
---
name:            input
alignment:       16
exposesReturnsTwice: false
legalized:       false
regBankSelected: false
selected:        false
failedISel:      false
tracksRegLiveness: true
hasWinCFI:       false
callsEHReturn:   false
callsUnwindInit: false
hasEHCatchret:   false
hasEHScopes:     false
hasEHFunclets:   false
isOutlined:      false
debugInstrRef:   false
failsVerification: false
tracksDebugUserValues: false
registers:
  - { id: 0, class: gr32, preferred-register: '' }
liveins:         []
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       0
  offsetAdjustment: 0
  maxAlignment:    4
  adjustsStack:    false
  hasCalls:        false
  stackProtector:  ''
  functionContext: ''
  maxCallFrameSize: 4294967295
  cvBytesOfCalleeSavedRegisters: 0
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
  hasTailCall:     false
  localFrameSize:  0
  savePoint:       ''
  restorePoint:    ''
fixedStack:
  - { id: 0, type: default, offset: 0, size: 4, alignment: 16, stack-id: default,
      isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true,
      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
stack:           []
entry_values:    []
callSites:       []
debugValueSubstitutions: []
constants:       []
machineFunctionInfo: {}
body:             |
  bb.0 (%ir-block.1):
    ; CHECK-LABEL: name: input
    ; CHECK: INLINEASM &"# $0", 8 /* mayload attdialect */, 262190 /* mem:m */, %fixed-stack.0, 1, $noreg, 0, $noreg, 12 /* clobber */, implicit-def dead early-clobber $ax, 12 /* clobber */, implicit-def dead early-clobber $cx, 12 /* clobber */, implicit-def dead early-clobber $dx, 12 /* clobber */, implicit-def dead early-clobber $si, 12 /* clobber */, implicit-def dead early-clobber $di, 12 /* clobber */, implicit-def dead early-clobber $bx, 12 /* clobber */, implicit-def dead early-clobber $bp :: (load (s32) from %fixed-stack.0, align 16)
    ; CHECK-NEXT: RET 0
    %0:gr32 = MOV32rm %fixed-stack.0, 1, $noreg, 0, $noreg :: (load (s32) from %fixed-stack.0, align 16)
    INLINEASM &"# $0", 0 /* attdialect */, 1076101129 /* reguse:GR32 spillable */, %0, 12 /* clobber */, implicit-def early-clobber $ax, 12 /* clobber */, implicit-def early-clobber $cx, 12 /* clobber */, implicit-def early-clobber $dx, 12 /* clobber */, implicit-def early-clobber $si, 12 /* clobber */, implicit-def early-clobber $di, 12 /* clobber */, implicit-def early-clobber $bx, 12 /* clobber */, implicit-def early-clobber $bp
    RET 0

...
---
name:            output
alignment:       16
exposesReturnsTwice: false
legalized:       false
regBankSelected: false
selected:        false
failedISel:      false
tracksRegLiveness: true
hasWinCFI:       false
callsEHReturn:   false
callsUnwindInit: false
hasEHCatchret:   false
hasEHScopes:     false
hasEHFunclets:   false
isOutlined:      false
debugInstrRef:   false
failsVerification: false
tracksDebugUserValues: false
registers:
  - { id: 0, class: gr32, preferred-register: '' }
liveins:         []
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       0
  offsetAdjustment: 0
  maxAlignment:    4
  adjustsStack:    false
  hasCalls:        false
  stackProtector:  ''
  functionContext: ''
  maxCallFrameSize: 4294967295
  cvBytesOfCalleeSavedRegisters: 0
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
  hasTailCall:     false
  localFrameSize:  0
  savePoint:       ''
  restorePoint:    ''
fixedStack:      []
stack:
  - { id: 0, name: '', type: default, offset: 0, size: 4, alignment: 4,
      stack-id: default, callee-saved-register: '', callee-saved-restored: true,
      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
entry_values:    []
callSites:       []
debugValueSubstitutions: []
constants:       []
machineFunctionInfo: {}
body:             |
  bb.0 (%ir-block.0):
    ; CHECK-LABEL: name: output
    ; CHECK: INLINEASM &"# $0", 16 /* maystore attdialect */, 262190 /* mem:m */, %stack.1, 1, $noreg, 0, $noreg, 12 /* clobber */, implicit-def dead early-clobber $ax, 12 /* clobber */, implicit-def dead early-clobber $cx, 12 /* clobber */, implicit-def dead early-clobber $dx, 12 /* clobber */, implicit-def dead early-clobber $si, 12 /* clobber */, implicit-def dead early-clobber $di, 12 /* clobber */, implicit-def dead early-clobber $bx, 12 /* clobber */, implicit-def dead early-clobber $bp :: (store (s32) into %stack.1)
    ; CHECK-NEXT: [[MOV32rm:%[0-9]+]]:gr32 = MOV32rm %stack.1, 1, $noreg, 0, $noreg :: (load (s32) from %stack.1)
    ; CHECK-NEXT: MOV32mr %stack.0, 1, $noreg, 0, $noreg, [[MOV32rm]] :: (store (s32) into %ir.1)
    ; CHECK-NEXT: $eax = COPY [[MOV32rm]]
    ; CHECK-NEXT: RET 0, $eax
    INLINEASM &"# $0", 0 /* attdialect */, 1076101130 /* regdef:GR32 spillable */, def %0, 12 /* clobber */, implicit-def early-clobber $ax, 12 /* clobber */, implicit-def early-clobber $cx, 12 /* clobber */, implicit-def early-clobber $dx, 12 /* clobber */, implicit-def early-clobber $si, 12 /* clobber */, implicit-def early-clobber $di, 12 /* clobber */, implicit-def early-clobber $bx, 12 /* clobber */, implicit-def early-clobber $bp
    MOV32mr %stack.0, 1, $noreg, 0, $noreg, %0 :: (store (s32) into %ir.1)
    $eax = COPY %0
    RET 0, $eax

...
---
name:            inout
alignment:       16
exposesReturnsTwice: false
legalized:       false
regBankSelected: false
selected:        false
failedISel:      false
tracksRegLiveness: true
hasWinCFI:       false
callsEHReturn:   false
callsUnwindInit: false
hasEHCatchret:   false
hasEHScopes:     false
hasEHFunclets:   false
isOutlined:      false
debugInstrRef:   false
failsVerification: false
tracksDebugUserValues: false
registers:
  - { id: 0, class: gr32, preferred-register: '' }
  - { id: 1, class: gr32, preferred-register: '' }
liveins:         []
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       0
  offsetAdjustment: 0
  maxAlignment:    4
  adjustsStack:    false
  hasCalls:        false
  stackProtector:  ''
  functionContext: ''
  maxCallFrameSize: 4294967295
  cvBytesOfCalleeSavedRegisters: 0
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
  hasTailCall:     false
  localFrameSize:  0
  savePoint:       ''
  restorePoint:    ''
fixedStack:
  - { id: 0, type: default, offset: 0, size: 4, alignment: 16, stack-id: default,
      isImmutable: false, isAliased: false, callee-saved-register: '',
      callee-saved-restored: true, debug-info-variable: '', debug-info-expression: '',
      debug-info-location: '' }
stack:           []
entry_values:    []
callSites:       []
debugValueSubstitutions: []
constants:       []
machineFunctionInfo: {}
body:             |
  bb.0 (%ir-block.1):
    ; CHECK-LABEL: name: inout
    ; CHECK: [[MOV32rm:%[0-9]+]]:gr32 = MOV32rm %fixed-stack.0, 1, $noreg, 0, $noreg :: (load (s32) from %fixed-stack.0, align 16)
    ; CHECK-NEXT: MOV32mr %stack.0, 1, $noreg, 0, $noreg, [[MOV32rm]] :: (store (s32) into %stack.0)
    ; CHECK-NEXT: INLINEASM &"# $0 $1", 24 /* mayload maystore attdialect */, 262190 /* mem:m */, %stack.0, 1, $noreg, 0, $noreg, 262190 /* mem:m */, %stack.0, 1, $noreg, 0, $noreg, 12 /* clobber */, implicit-def dead early-clobber $ax, 12 /* clobber */, implicit-def dead early-clobber $cx, 12 /* clobber */, implicit-def dead early-clobber $dx, 12 /* clobber */, implicit-def dead early-clobber $si, 12 /* clobber */, implicit-def dead early-clobber $di, 12 /* clobber */, implicit-def dead early-clobber $bx, 12 /* clobber */, implicit-def dead early-clobber $bp :: (load store (s32) on %stack.0)
    ; CHECK-NEXT: [[MOV32rm1:%[0-9]+]]:gr32 = MOV32rm %stack.0, 1, $noreg, 0, $noreg :: (load (s32) from %stack.0)
    ; CHECK-NEXT: MOV32mr %fixed-stack.0, 1, $noreg, 0, $noreg, [[MOV32rm1]] :: (store (s32) into %ir.2, align 16)
    ; CHECK-NEXT: $eax = COPY [[MOV32rm1]]
    ; CHECK-NEXT: RET 0, $eax
    %1:gr32 = MOV32rm %fixed-stack.0, 1, $noreg, 0, $noreg :: (load (s32) from %fixed-stack.0, align 16)
    INLINEASM &"# $0 $1", 0 /* attdialect */, 1076101130 /* regdef:GR32 spillable */, def %0, 2147483657 /* reguse tiedto:$0 */, %1(tied-def 3), 12 /* clobber */, implicit-def early-clobber $ax, 12 /* clobber */, implicit-def early-clobber $cx, 12 /* clobber */, implicit-def early-clobber $dx, 12 /* clobber */, implicit-def early-clobber $si, 12 /* clobber */, implicit-def early-clobber $di, 12 /* clobber */, implicit-def early-clobber $bx, 12 /* clobber */, implicit-def early-clobber $bp
    MOV32mr %fixed-stack.0, 1, $noreg, 0, $noreg, %0 :: (store (s32) into %ir.2, align 16)
    $eax = COPY %0
    RET 0, $eax

...