llvm/test/CodeGen/MIR/X86/memory-operands.mir

# RUN: llc -march=x86-64 -run-pass none -o - %s | FileCheck %s
# This test ensures that the MIR parser parses the machine memory operands
# correctly.

--- |

  define i32 @test(i32* %a) {
  entry:
    %b = load i32, i32* %a
    store i32 42, i32* %a
    ret i32 %b
  }

  define void @test2(i32* %"a value") {
  entry2:
    %b = load i32, i32* %"a value"
    %c = add i32 %b, 1
    store i32 %c, i32* %"a value"
    ret void
  }

  define void @test3(i32*) {
  entry3:
    %1 = alloca i32
    %b = load i32, i32* %0
    %c = add i32 %b, 1
    store i32 %c, i32* %1
    ret void
  }

  define i32 @volatile_inc(i32* %x) {
  entry:
    %0 = load volatile i32, i32* %x
    %1 = add i32 %0, 1
    store volatile i32 %1, i32* %x
    ret i32 %1
  }

  define void @non_temporal_store(i32* %a, i32 %b) {
  entry:
    store i32 %b, i32* %a, align 16, !nontemporal !0
    ret void
  }

  !0 = !{i32 1}

  define i32 @invariant_load(i32* %x) {
  entry:
    %v = load i32, i32* %x, !invariant.load !1
    ret i32 %v
  }

  !1 = !{}

  define void @memory_offset(<8 x float>* %vec) {
  entry:
    %v = load <8 x float>, <8 x float>* %vec
    %v2 = insertelement <8 x float> %v, float 0.0, i32 4
    store <8 x float> %v2, <8 x float>* %vec
    ret void
  }

  define void @memory_alignment(<16 x float>* %vec) {
  entry:
    %v = load <16 x float>, <16 x float>* %vec
    %v2 = insertelement <16 x float> %v, float 0.0, i32 4
    store <16 x float> %v2, <16 x float>* %vec
    ret void
  }

  define double @constant_pool_psv(double %a) {
  entry:
    %b = fadd double %a, 3.250000e+00
    ret double %b
  }

  declare x86_fp80 @cosl(x86_fp80) #0

  define x86_fp80 @stack_psv(x86_fp80 %x) {
  entry:
    %y = call x86_fp80 @cosl(x86_fp80 %x) #0
    ret x86_fp80 %y
  }

  attributes #0 = { readonly }

  @G = external global i32

  define i32 @got_psv() {
  entry:
    %a = load i32, i32* @G
    %b = add i32 %a, 1
    ret i32 %b
  }

  @0 = external global i32

  define i32 @global_value() {
  entry:
    %a = load i32, i32* @G
    %b = add i32 %a, 1
    %c = load i32, i32* @0
    %d = add i32 %b, %c
    ret i32 %d
  }

  define i32 @jumptable_psv(i32 %in) {
  entry:
    switch i32 %in, label %def [
      i32 0, label %lbl1
      i32 1, label %lbl2
      i32 2, label %lbl3
      i32 3, label %lbl4
    ]
  def:
    ret i32 0
  lbl1:
    ret i32 1
  lbl2:
    ret i32 2
  lbl3:
    ret i32 4
  lbl4:
    ret i32 8
  }

  %struct.XXH_state64_t = type { i32, i32, i64, i64, i64 }

  @a = common global i32 0, align 4

  define i32 @tbaa_metadata() {
  entry:
    %0 = load i32, i32* @a, align 4, !tbaa !2
    %1 = inttoptr i32 %0 to %struct.XXH_state64_t*
    %total_len2 = bitcast %struct.XXH_state64_t* %1 to i32*
    %2 = load i32, i32* %total_len2, align 4, !tbaa !6
    ret i32 %2
  }

  !2 = !{!3, !3, i64 0}
  !3 = !{!"int", !4, i64 0}
  !4 = !{!"omnipotent char", !5, i64 0}
  !5 = !{!"Simple C/C++ TBAA"}
  !6 = !{!7, !3, i64 0}
  !7 = !{!"XXH_state64_t", !3, i64 0, !3, i64 4, !8, i64 8, !8, i64 16, !8, i64 24}
  !8 = !{!"long long", !4, i64 0}

  define void @aa_scope(float* nocapture %a, float* nocapture readonly %c) #1 {
  entry:
    %0 = load float, float* %c, align 4, !alias.scope !9
    %arrayidx.i = getelementptr inbounds float, float* %a, i64 5
    store float %0, float* %arrayidx.i, align 4, !noalias !9
    %1 = load float, float* %c, align 4
    %arrayidx = getelementptr inbounds float, float* %a, i64 7
    store float %1, float* %arrayidx, align 4
    ret void
  }

  attributes #1 = { nounwind uwtable }

  !9 = !{!10}
  !10 = distinct !{!10, !11, !"some scope"}
  !11 = distinct !{!11, !"some domain"}

  define zeroext i1 @range_metadata(i8* %x) {
  entry:
    %0 = load i8, i8* %x, align 1, !range !12
    %tobool = trunc i8 %0 to i1
    ret i1 %tobool
  }

  !12 = !{i8 0, i8 2}

  %st = type { i32, i32 }

  @values = common global [50 x %st] zeroinitializer, align 16

  define void @gep_value(i64 %d) {
  entry:
    %conv = trunc i64 %d to i32
    store i32 %conv, i32* getelementptr inbounds ([50 x %st], [50 x %st]* @values, i64 0, i64 0, i32 0), align 16
    ret void
  }

  define i8* @undef_value() {
  entry:
    %0 = load i8*, i8** undef, align 8
    ret i8* %0
  }

  define void @dummy0() { ret void }
  define void @dummy1() { ret void }
  define void @dummy2() { ret void }
  define void @dummy3() { ret void }
...
---
name:            test
tracksRegLiveness: true
liveins:
  - { reg: '$rdi' }
body: |
  bb.0.entry:
    liveins: $rdi
  ; CHECK:      $eax = MOV32rm $rdi, 1, $noreg, 0, $noreg :: (load (s32) from %ir.a)
  ; CHECK-NEXT: MOV32mi killed $rdi, 1, $noreg, 0, $noreg, 42 :: (store (s32) into %ir.a)
    $eax = MOV32rm $rdi, 1, _, 0, _ :: (load (s32) from %ir.a)
    MOV32mi killed $rdi, 1, _, 0, _, 42 :: (store (s32) into %ir.a)
    RET64 $eax
...
---
name:            test2
tracksRegLiveness: true
liveins:
  - { reg: '$rdi' }
body: |
  bb.0.entry2:
    liveins: $rdi
  ; CHECK: INC32m killed $rdi, 1, $noreg, 0, $noreg, implicit-def dead $eflags :: (store (s32) into %ir."a value"), (load (s32) from %ir."a value")
    INC32m killed $rdi, 1, _, 0, _, implicit-def dead $eflags :: (store (s32) into %ir."a value"), (load (s32) from %ir."a value")
    RET64
...
---
name:            test3
tracksRegLiveness: true
liveins:
  - { reg: '$rdi' }
frameInfo:
  maxAlignment:    4
stack:
  - { id: 0, offset: -12, size: 4, alignment: 4 }
body: |
  bb.0.entry3:
    liveins: $rdi
  ; Verify that the unnamed local values can be serialized.
  ; CHECK-LABEL: name: test3
  ; CHECK: $eax = MOV32rm killed $rdi, 1, $noreg, 0, $noreg :: (load (s32) from %ir.0)
  ; CHECK: MOV32mr $rsp, 1, $noreg, -4, $noreg, killed $eax :: (store (s32) into %ir.1)
    $eax = MOV32rm killed $rdi, 1, _, 0, _ :: (load (s32) from %ir.0)
    $eax = INC32r killed $eax, implicit-def dead $eflags
    MOV32mr $rsp, 1, _, -4, _, killed $eax :: (store (s32) into %ir.1)
    RET64
...
---
name:            volatile_inc
tracksRegLiveness: true
liveins:
  - { reg: '$rdi' }
body: |
  bb.0.entry:
    liveins: $rdi
    ; CHECK: name: volatile_inc
    ; CHECK: $eax = MOV32rm $rdi, 1, $noreg, 0, $noreg :: (volatile load (s32) from %ir.x)
    ; CHECK: MOV32mr killed $rdi, 1, $noreg, 0, $noreg, $eax :: (volatile store (s32) into %ir.x)
    $eax = MOV32rm $rdi, 1, _, 0, _ :: (volatile load (s32) from %ir.x)
    $eax = INC32r killed $eax, implicit-def dead $eflags
    MOV32mr killed $rdi, 1, _, 0, _, $eax :: (volatile store (s32) into %ir.x)
    RET64 $eax
...
---
name:            non_temporal_store
tracksRegLiveness: true
liveins:
  - { reg: '$rdi' }
  - { reg: '$esi' }
body: |
  bb.0.entry:
    liveins: $esi, $rdi
  ; CHECK: name: non_temporal_store
  ; CHECK: MOVNTImr killed $rdi, 1, $noreg, 0, $noreg, killed $esi :: (non-temporal store (s32) into %ir.a)
    MOVNTImr killed $rdi, 1, _, 0, _, killed $esi :: (non-temporal store (s32) into %ir.a)
    RET64
...
---
name:            invariant_load
tracksRegLiveness: true
liveins:
  - { reg: '$rdi' }
body: |
  bb.0.entry:
    liveins: $rdi
  ; CHECK: name: invariant_load
  ; CHECK: $eax = MOV32rm killed $rdi, 1, $noreg, 0, $noreg :: (invariant load (s32) from %ir.x)
    $eax = MOV32rm killed $rdi, 1, _, 0, _ :: (invariant load (s32) from %ir.x)
    RET64 $eax
...
---
name:            memory_offset
tracksRegLiveness: true
liveins:
  - { reg: '$rdi' }
body: |
  bb.0.entry:
    liveins: $rdi
  ; CHECK: name: memory_offset
  ; CHECK:      $xmm0 = MOVAPSrm $rdi, 1, $noreg, 0, $noreg :: (load (s128) from %ir.vec)
  ; CHECK-NEXT: $xmm1 = MOVAPSrm $rdi, 1, $noreg, 16, $noreg :: (load (s128) from %ir.vec + 16)
  ; CHECK:      MOVAPSmr $rdi, 1, $noreg, 0, $noreg, killed $xmm0 :: (store (s128) into %ir.vec)
  ; CHECK-NEXT: MOVAPSmr killed $rdi, 1, $noreg, 16, $noreg, killed $xmm1 :: (store (s128) into %ir.vec + 16)
    $xmm0 = MOVAPSrm $rdi, 1, _, 0, _ :: (load (s128) from %ir.vec)
    $xmm1 = MOVAPSrm $rdi, 1, _, 16, _ :: (load (s128) from %ir.vec + 16)
    $xmm2 = FsFLD0SS
    $xmm1 = MOVSSrr killed $xmm1, killed $xmm2
    MOVAPSmr $rdi, 1, _, 0, _, killed $xmm0 :: (store (s128) into %ir.vec)
    MOVAPSmr killed $rdi, 1, _, 16, _, killed $xmm1 :: (store (s128) into %ir.vec + 16)
    RET64
...
---
name:            memory_alignment
tracksRegLiveness: true
liveins:
  - { reg: '$rdi' }
body: |
  bb.0.entry:
    liveins: $rdi
  ; CHECK: name: memory_alignment
  ; CHECK:      $xmm0 = MOVAPSrm $rdi, 1, $noreg, 0, $noreg :: (load (s128) from %ir.vec, align 64)
  ; CHECK-NEXT: $xmm1 = MOVAPSrm $rdi, 1, $noreg, 16, $noreg :: (load (s128) from %ir.vec + 16, basealign 64)
  ; CHECK-NEXT: $xmm2 = MOVAPSrm $rdi, 1, $noreg, 32, $noreg :: (load (s128) from %ir.vec + 32, align 32, basealign 64)
  ; CHECK-NEXT: $xmm3 = MOVAPSrm $rdi, 1, $noreg, 48, $noreg :: (load (s128) from %ir.vec + 48, basealign 64)
  ; CHECK:      MOVAPSmr $rdi, 1, $noreg, 0, $noreg, killed $xmm0 :: (store (s128) into %ir.vec, align 64)
  ; CHECK-NEXT: MOVAPSmr $rdi, 1, $noreg, 16, $noreg, killed $xmm1 :: (store (s128) into %ir.vec + 16, basealign 64)
  ; CHECK-NEXT: MOVAPSmr $rdi, 1, $noreg, 32, $noreg, killed $xmm2 :: (store (s128) into %ir.vec + 32, align 32, basealign 64)
  ; CHECK-NEXT: MOVAPSmr killed $rdi, 1, $noreg, 48, $noreg, killed $xmm3 :: (store (s128) into %ir.vec + 48, basealign 64)
    $xmm0 = MOVAPSrm $rdi, 1, _, 0, _ :: (load (s128) from %ir.vec, align 64)
    $xmm1 = MOVAPSrm $rdi, 1, _, 16, _ :: (load (s128) from %ir.vec + 16, basealign 64)
    $xmm2 = MOVAPSrm $rdi, 1, _, 32, _ :: (load (s128) from %ir.vec + 32, align 32, basealign 64)
    $xmm3 = MOVAPSrm $rdi, 1, _, 48, _ :: (load (s128) from %ir.vec + 48, basealign 64)
    $xmm4 = FsFLD0SS
    $xmm1 = MOVSSrr killed $xmm1, killed $xmm4
    MOVAPSmr $rdi, 1, _, 0, _, killed $xmm0 :: (store (s128) into %ir.vec, align 64)
    MOVAPSmr $rdi, 1, _, 16, _, killed $xmm1 :: (store (s128) into %ir.vec + 16, basealign 64)
    MOVAPSmr $rdi, 1, _, 32, _, killed $xmm2 :: (store (s128) into %ir.vec + 32, align 32, basealign 64)
    MOVAPSmr killed $rdi, 1, _, 48, _, killed $xmm3 :: (store (s128) into %ir.vec + 48, basealign 64)
    RET64
...
---
name:            constant_pool_psv
tracksRegLiveness: true
liveins:
  - { reg: '$xmm0' }
constants:
  - id:          0
    value:       'double 3.250000e+00'
body: |
  bb.0.entry:
    liveins: $xmm0
  ; CHECK: name: constant_pool_psv
  ; CHECK:      $xmm0 = ADDSDrm killed $xmm0, $rip, 1, $noreg, %const.0, $noreg, implicit $mxcsr :: (load (s64) from constant-pool)
  ; CHECK-NEXT: $xmm0 = ADDSDrm killed $xmm0, $rip, 1, $noreg, %const.0, $noreg, implicit $mxcsr :: (load (s64) from constant-pool + 8)
    $xmm0 = ADDSDrm killed $xmm0, $rip, 1, _, %const.0, _, implicit $mxcsr :: (load (s64) from constant-pool)
    $xmm0 = ADDSDrm killed $xmm0, $rip, 1, _, %const.0, _, implicit $mxcsr :: (load (s64) from constant-pool + 8)
    RET64 $xmm0
...
---
name:            stack_psv
tracksRegLiveness: true
frameInfo:
  stackSize:       24
  maxAlignment:    16
  adjustsStack:    true
  hasCalls:        true
  maxCallFrameSize: 16
fixedStack:
  - { id: 0, offset: 0, size: 10, alignment: 16, isImmutable: true, isAliased: false }
body: |
  bb.0.entry:
    $rsp = frame-setup SUB64ri8 $rsp, 24, implicit-def dead $eflags
    CFI_INSTRUCTION def_cfa_offset 32
    LD_F80m $rsp, 1, $noreg, 32, $noreg, implicit-def dead $fpsw, implicit $fpcw
  ; CHECK: name: stack_psv
  ; CHECK: ST_FP80m $rsp, 1, $noreg, 0, $noreg, implicit-def dead $fpsw, implicit $fpcw :: (store (s80) into stack, align 16)
    ST_FP80m $rsp, 1, _, 0, _, implicit-def dead $fpsw, implicit $fpcw :: (store (s80) into stack, align 16)
    CALL64pcrel32 &cosl, csr_64, implicit $rsp, implicit-def $rsp, implicit-def $fp0
    $rsp = ADD64ri8 $rsp, 24, implicit-def dead $eflags
    RET64
...
---
name:            got_psv
tracksRegLiveness: true
body: |
  bb.0.entry:
  ; CHECK: name: got_psv
  ; CHECK: $rax = MOV64rm $rip, 1, $noreg, @G, $noreg :: (load (s64) from got)
    $rax = MOV64rm $rip, 1, _, @G, _ :: (load (s64) from got)
    $eax = MOV32rm killed $rax, 1, _, 0, _
    $eax = INC32r killed $eax, implicit-def dead $eflags
    RET64 $eax
...
---
name:            global_value
tracksRegLiveness: true
body: |
  bb.0.entry:
    $rax = MOV64rm $rip, 1, _, @G, _
  ; CHECK-LABEL: name: global_value
  ; CHECK: $eax = MOV32rm killed $rax, 1, $noreg, 0, $noreg, implicit-def $rax :: (load (s32) from @G)
  ; CHECK: $ecx = MOV32rm killed $rcx, 1, $noreg, 0, $noreg, implicit-def $rcx :: (load (s32) from @0)
    $eax = MOV32rm killed $rax, 1, _, 0, _, implicit-def $rax :: (load (s32) from @G)
    $rcx = MOV64rm $rip, 1, _, @0, _
    $ecx = MOV32rm killed $rcx, 1, _, 0, _, implicit-def $rcx :: (load (s32) from @0)
    $eax = LEA64_32r killed $rax, 1, killed $rcx, 1, _
    RET64 $eax
...
---
name:            jumptable_psv
tracksRegLiveness: true
liveins:
  - { reg: '$edi' }
jumpTable:
  kind:          label-difference32
  entries:
    - id:        0
      blocks:    [ '%bb.3.lbl1', '%bb.4.lbl2', '%bb.5.lbl3', '%bb.6.lbl4' ]
body: |
  bb.0.entry:
    successors: %bb.2.def, %bb.1.entry
    liveins: $edi

    $eax = MOV32rr $edi, implicit-def $rax
    CMP32ri8 killed $edi, 3, implicit-def $eflags
    JCC_1 %bb.2.def, 7, implicit killed $eflags

  bb.1.entry:
    successors: %bb.3.lbl1, %bb.4.lbl2, %bb.5.lbl3, %bb.6.lbl4
    liveins: $rax

    $rcx = LEA64r $rip, 1, _, %jump-table.0, _
  ; CHECK: name: jumptable_psv
  ; CHECK: $rax = MOVSX64rm32 $rcx, 4, killed $rax, 0, $noreg :: (load (s32) from jump-table, align 8)
    $rax = MOVSX64rm32 $rcx, 4, killed $rax, 0, _ :: (load (s32) from jump-table, align 8)
    $rax = ADD64rr killed $rax, killed $rcx, implicit-def dead $eflags
    JMP64r killed $rax

  bb.2.def:
    $eax = MOV32r0 implicit-def dead $eflags
    RET64 $eax

  bb.3.lbl1:
    $eax = MOV32ri 1
    RET64 $eax

  bb.4.lbl2:
    $eax = MOV32ri 2
    RET64 $eax

  bb.5.lbl3:
    $eax = MOV32ri 4
    RET64 $eax

  bb.6.lbl4:
    $eax = MOV32ri 8
    RET64 $eax
...
---
name:            tbaa_metadata
tracksRegLiveness: true
body: |
  bb.0.entry:
    $rax = MOV64rm $rip, 1, _, @a, _ :: (load (s64) from got)
  ; CHECK-LABEL: name: tbaa_metadata
  ; CHECK:      $eax = MOV32rm killed $rax, 1, $noreg, 0, $noreg, implicit-def $rax :: (load (s32) from @a, !tbaa !2)
  ; CHECK-NEXT: $eax = MOV32rm killed $rax, 1, $noreg, 0, $noreg :: (load (s32) from %ir.total_len2, !tbaa !6)
    $eax = MOV32rm killed $rax, 1, _, 0, _, implicit-def $rax :: (load (s32) from @a, !tbaa !2)
    $eax = MOV32rm killed $rax, 1, _, 0, _ :: (load (s32) from %ir.total_len2, !tbaa !6)
    RET64 $eax
...
---
name:            aa_scope
tracksRegLiveness: true
liveins:
  - { reg: '$rdi' }
  - { reg: '$rsi' }
body: |
  bb.0.entry:
    liveins: $rdi, $rsi
  ; CHECK-LABEL: name: aa_scope
  ; CHECK: $xmm0 = MOVSSrm_alt $rsi, 1, $noreg, 0, $noreg :: (load (s32) from %ir.c, !alias.scope !9)
    $xmm0 = MOVSSrm_alt $rsi, 1, _, 0, _ :: (load (s32) from %ir.c, !alias.scope !9)
  ; CHECK-NEXT: MOVSSmr $rdi, 1, $noreg, 20, $noreg, killed $xmm0 :: (store (s32) into %ir.arrayidx.i, !noalias !9)
    MOVSSmr $rdi, 1, _, 20, _, killed $xmm0 :: (store (s32) into %ir.arrayidx.i, !noalias !9)
    $xmm0 = MOVSSrm_alt killed $rsi, 1, _, 0, _ :: (load (s32) from %ir.c)
    MOVSSmr killed $rdi, 1, _, 28, _, killed $xmm0 :: (store (s32) into %ir.arrayidx)
    RET64
...
---
name:            range_metadata
tracksRegLiveness: true
liveins:
  - { reg: '$rdi' }
body: |
  bb.0.entry:
    liveins: $rdi
  ; CHECK-LABEL: name: range_metadata
  ; CHECK: $al = MOV8rm killed $rdi, 1, $noreg, 0, $noreg :: (load (s8) from %ir.x, !range !11)
    $al = MOV8rm killed $rdi, 1, _, 0, _ :: (load (s8) from %ir.x, !range !11)
    RET64 $al
...
---
name:            gep_value
tracksRegLiveness: true
liveins:
  - { reg: '$rdi' }
body: |
  bb.0.entry:
    liveins: $rdi

    $rax = MOV64rm $rip, 1, _, @values, _ :: (load (s64) from got)
  ; CHECK-LABEL: gep_value
  ; CHECK: MOV32mr killed $rax, 1, $noreg, 0, $noreg, $edi, implicit killed $rdi :: (store (s32) into `i32* getelementptr inbounds ([50 x %st], [50 x %st]* @values, i64 0, i64 0, i32 0)`, align 16)
    MOV32mr killed $rax, 1, _, 0, _, $edi, implicit killed $rdi :: (store (s32) into `i32* getelementptr inbounds ([50 x %st], [50 x %st]* @values, i64 0, i64 0, i32 0)`, align 16)
    RET64
...
---
name:            undef_value
tracksRegLiveness: true
body: |
  bb.0.entry:
  ; CHECK-LABEL: name: undef_value
  ; CHECK: $rax = MOV64rm undef $rax, 1, $noreg, 0, $noreg :: (load (s64) from `i8** undef`)
    $rax = MOV64rm undef $rax, 1, _, 0, _ :: (load (s64) from `i8** undef`)
    RET64 $rax
...
---
# Test memory operand without associated value.
# CHECK-LABEL: name: dummy0
# CHECK: $rax = MOV64rm undef $rax, 1, $noreg, 0, $noreg :: (load (s64))
name: dummy0
tracksRegLiveness: true
body: |
  bb.0:
    $rax = MOV64rm undef $rax, 1, _, 0, _ :: (load (s64))
    RET64 $rax
...
---
# Test parsing of stack references in machine memory operands.
# CHECK-LABEL: name: dummy1
# CHECK: $rax = MOV64rm $rsp, 1, $noreg, 0, $noreg :: (load (s64) from %stack.0)
name: dummy1
tracksRegLiveness: true
stack:
  - { id: 0, size: 4, alignment: 4 }
body: |
  bb.0:
    $rax = MOV64rm $rsp, 1, _, 0, _ :: (load (s64) from %stack.0)
    RET64 $rax
...
---
# Test parsing of unknown size in machine memory operands without alignment.
# CHECK-LABEL: name: dummy2
# CHECK: $rax = MOV64rm $rsp, 1, $noreg, 0, $noreg :: (load unknown-size from %stack.0, align 1)
name: dummy2
tracksRegLiveness: true
stack:
  - { id: 0, size: 4, alignment: 4 }
body: |
  bb.0:
    $rax = MOV64rm $rsp, 1, _, 0, _ :: (load unknown-size from %stack.0)
    RET64 $rax
...
---
# Test parsing of unknown size in machine memory operands with alignment.
# CHECK-LABEL: name: dummy3
# CHECK: $rax = MOV64rm $rsp, 1, $noreg, 0, $noreg :: (load unknown-size from %stack.0, align 4)
name: dummy3
tracksRegLiveness: true
stack:
  - { id: 0, size: 4, alignment: 4 }
body: |
  bb.0:
    $rax = MOV64rm $rsp, 1, _, 0, _ :: (load unknown-size from %stack.0, align 4)
    RET64 $rax
...